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Re: kern/54818: 9.0_RC1 pagedaemon spins



The following reply was made to PR kern/54818; it has been noted by GNATS.

From: Havard Eidnes <he%uninett.no@localhost>
To: lars%paradoxon.info@localhost
Cc: gnats-bugs%netbsd.org@localhost, ad%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
 netbsd-bugs%netbsd.org@localhost, tsutsui%ceres.dti.ne.jp@localhost
Subject: Re: kern/54818: 9.0_RC1 pagedaemon spins
Date: Wed, 11 Mar 2020 09:47:06 +0100 (CET)

 Hi,
 
 and thanks for the dtrace script!  Via hints, I managed to get it
 to run using "-x nolib", and it has now traced a number of 64k
 allocations and free operations -- it seems these are all audio
 related.  Counting the "alloc"s vs. the "free"s, it seems I have
 81 allocs but only 45 frees.  Somewhat correspondingly, I appear
 to have 72 'audioopen' but only 9 'audioclose'.  The only audio-
 using application I use is firefox, but it's not collecting audio
 file descriptors -- I only find one open at the moment (and I
 don't use pulseaudio):
 
 : {16} ; fstat -n -p 1412 | grep audio
 he       firefox     1412  179* audio 0xfffffe805f1f3240
 : {17} ; 
 
 The dtrace script I got is
 
 ---
 #pragma D option flowindent
 
 fbt::uvm_km_kmem_alloc:entry
 /arg1 > 49152 && arg1 <= 65536 /
 {
         printf("size: %d", arg1);
         stack();
 }
 
 fbt::uvm_km_kmem_free:entry
 /arg2 > 49152 && arg2 <= 65536/
 {
         printf("size: %d", arg2);
         stack();
 }
 ---
 
 and the trace collected so far is shown below.
 
 Inspecting the code of audiosetinfo() doesn't reveal a
 kmem_intr_zalloc anywhere in sight, but dissassembling finds
 there is a call to kmem_zalloc() on the expected location:
 
    0xffffffff80791195 <audiosetinfo+4334>:      
     callq  0xffffffff8098c3be <kmem_zalloc>
 
 There is one in audio_stream_ctor(), though, called from
 audio_setup_rfilters(), which are both static functions, so both
 may have been hoisted up into audiosetinfo() (?)
 
 Anyway, the collected info so far is:
 
 
 CPU FUNCTION                                 
   7  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7          -> uvm_km_kmem_alloc             size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7              -> uvm_km_kmem_free          size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_free                      size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audio_destroy_pfilters+0x51
               netbsd`audio_close.part.31+0xc9
               netbsd`audioclose+0x116
               netbsd`closef+0x63
               netbsd`fd_close+0x108
               netbsd`sys_close+0x1f
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0          -> uvm_km_kmem_alloc             size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0              -> uvm_km_kmem_free          size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   3  -> uvm_km_kmem_free                      size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audio_destroy_pfilters+0x51
               netbsd`audio_close.part.31+0xc9
               netbsd`audioclose+0x116
               netbsd`closef+0x63
               netbsd`fd_close+0x108
               netbsd`sys_close+0x1f
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7          -> uvm_km_kmem_free              size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1          -> uvm_km_kmem_free              size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1          -> uvm_km_kmem_alloc             size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   1              -> uvm_km_kmem_free          size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_free                      size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audio_destroy_pfilters+0x51
               netbsd`audio_close.part.31+0xc9
               netbsd`audioclose+0x116
               netbsd`closef+0x63
               netbsd`fd_close+0x108
               netbsd`sys_close+0x1f
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_free                      size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audio_destroy_pfilters+0x51
               netbsd`audio_close.part.31+0xc9
               netbsd`audioclose+0x116
               netbsd`closef+0x63
               netbsd`fd_close+0x108
               netbsd`sys_close+0x1f
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6          -> uvm_km_kmem_alloc             size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6              -> uvm_km_kmem_free          size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6          -> uvm_km_kmem_free              size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0          -> uvm_km_kmem_free              size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   3  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   3    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   3      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   3        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   3          -> uvm_km_kmem_alloc             size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   3            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   3              -> uvm_km_kmem_free          size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7  -> uvm_km_kmem_free                      size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audio_destroy_pfilters+0x51
               netbsd`audio_close.part.31+0xc9
               netbsd`audioclose+0x116
               netbsd`closef+0x63
               netbsd`fd_close+0x108
               netbsd`sys_close+0x1f
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   5  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   5    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   5      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   5        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   5          -> uvm_km_kmem_alloc             size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   5            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   5              -> uvm_km_kmem_free          size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_free                      size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audio_destroy_pfilters+0x51
               netbsd`audio_close.part.31+0xc9
               netbsd`audioclose+0x116
               netbsd`closef+0x63
               netbsd`fd_close+0x108
               netbsd`sys_close+0x1f
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0          -> uvm_km_kmem_alloc             size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0              -> uvm_km_kmem_free          size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_free                      size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audio_destroy_pfilters+0x51
               netbsd`audio_close.part.31+0xc9
               netbsd`audioclose+0x116
               netbsd`closef+0x63
               netbsd`fd_close+0x108
               netbsd`sys_close+0x1f
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   2  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   2    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   2      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   2        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   2          -> uvm_km_kmem_free              size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   2            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0          -> uvm_km_kmem_alloc             size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0              -> uvm_km_kmem_free          size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_free                      size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audio_destroy_pfilters+0x51
               netbsd`audio_close.part.31+0xc9
               netbsd`audioclose+0x116
               netbsd`closef+0x63
               netbsd`fd_close+0x108
               netbsd`sys_close+0x1f
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6          -> uvm_km_kmem_free              size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   6            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0          -> uvm_km_kmem_free              size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0          -> uvm_km_kmem_free              size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0          -> uvm_km_kmem_free              size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7  -> uvm_km_kmem_alloc                     size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7    -> uvm_km_kmem_alloc                   size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7      -> uvm_km_kmem_alloc                 size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7        -> uvm_km_kmem_alloc               size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x10f3
               netbsd`audio_set_defaults+0xeb
               netbsd`audio_open.part.33+0x44c
               netbsd`audioopen+0xf5
               netbsd`spec_open+0x276
               netbsd`VOP_OPEN+0x4c
               netbsd`vn_open+0x1ed
               netbsd`do_open+0x112
               netbsd`do_sys_openat+0x68
               netbsd`sys_open+0x24
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7          -> uvm_km_kmem_alloc             size: 65536
               netbsd`kmem_intr_alloc+0x6d
               netbsd`kmem_intr_zalloc+0xf
               netbsd`audiosetinfo+0x645
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7            -> uvm_km_kmem_free            size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   7              -> uvm_km_kmem_free          size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audiosetinfo+0x1579
               netbsd`audio_ioctl+0x21c
               netbsd`audioioctl+0xe6
               netbsd`sys_ioctl+0x11a
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 
   0  -> uvm_km_kmem_free                      size: 65536
               netbsd`audio_stream_dtor+0x1d
               netbsd`audio_destroy_pfilters+0x51
               netbsd`audio_close.part.31+0xc9
               netbsd`audioclose+0x116
               netbsd`closef+0x63
               netbsd`fd_close+0x108
               netbsd`sys_close+0x1f
               netbsd`syscall+0x1ec
               netbsd`handle_syscall+0x2d
 


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