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panic: kmem_free(ADDR, NUM) != allocated size ADDR; overwrote?



Hello,

syzbot found the following issue on:

HEAD commit:    2864ddb2e91d make: clean up API for iterating over hash ta..
git tree:       netbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=16e9b514980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1420f906d33d9f1f
dashboard link: https://syzkaller.appspot.com/bug?extid=1d4b4a56bb0413d1885d
compiler:       g++ (Debian 12.2.0-14) 12.2.0

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f21868ae3255/disk-2864ddb2.raw.xz
netbsd.gdb: https://storage.googleapis.com/syzbot-assets/887057fc963d/netbsd-2864ddb2.gdb.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1d4b4a56bb0413d1885d%syzkaller.appspotmail.com@localhost

[  45.2075080] .: failed to start extattr, error = 0panic: kmem_free(0xffffb38909a89e40, 264) != allocated size 18446744073709551615; overwrote?
[  45.2175233] cpu1: Begin traceback...
[  45.2574954] vpanic() at netbsd:vpanic+0x2f0 sys/kern/subr_prf.c:288
[  45.3975114] panic() at netbsd:panic+0x49 sys/kern/subr_prf.c:1116
[  45.5074942] kmem_intr_free() at netbsd:kmem_intr_free+0x578 kmem_size_check sys/kern/subr_kmem.c:647 [inline]
[  45.5074942] kmem_intr_free() at netbsd:kmem_intr_free+0x578 sys/kern/subr_kmem.c:395
[  45.5974909] kern_free() at netbsd:kern_free+0x86 sys/kern/kern_malloc.c:172
[  45.7074927] netexport_clear() at netbsd:netexport_clear+0x37a setpublicfs sys/nfs/nfs_export.c:748 [inline]
[  45.7074927] netexport_clear() at netbsd:netexport_clear+0x37a sys/nfs/nfs_export.c:673
[  45.8174899] netexport_unmount() at netbsd:netexport_unmount+0xa5 netexport_remove sys/nfs/nfs_export.c:340 [inline]
[  45.8174899] netexport_unmount() at netbsd:netexport_unmount+0xa5 sys/nfs/nfs_export.c:191
[  45.9274905] vfs_hooks_unmount() at netbsd:vfs_hooks_unmount+0x66 sys/kern/vfs_hooks.c:137
[  46.0274925] dounmount() at netbsd:dounmount+0x306 vfs_set_lowermount sys/kern/vfs_mount.c:429 [inline]
[  46.0274925] dounmount() at netbsd:dounmount+0x306 vfs_set_lowermount sys/kern/vfs_mount.c:401 [inline]
[  46.0274925] dounmount() at netbsd:dounmount+0x306 sys/kern/vfs_mount.c:1015
[  46.1274897] sys_unmount() at netbsd:sys_unmount+0x224 sys/kern/vfs_syscalls.c:701
[  46.2274890] sys___syscall() at netbsd:sys___syscall+0x1e4 sy_call sys/sys/syscallvar.h:65 [inline]
[  46.2274890] sys___syscall() at netbsd:sys___syscall+0x1e4 sys/kern/sys_syscall.c:90
[  46.3374884] syscall() at netbsd:syscall+0x28b sy_call sys/sys/syscallvar.h:65 [inline]
[  46.3374884] syscall() at netbsd:syscall+0x28b sy_invoke sys/sys/syscallvar.h:94 [inline]
[  46.3374884] syscall() at netbsd:syscall+0x28b sys/arch/x86/x86/syscall.c:137
[  46.3574917] --- syscall (number 22 via SYS_syscall) ---
[  46.3874996] netbsd:syscall+0x28b:
[  46.3874996] cpu1: End traceback...
[  46.3974920] fatal breakpoint trap in supervisor mode
[  46.3974920] trap type 1 code 0 rip 0xffffffff80235475 cs 0x8 rflags 0x246 cr2 0x630000 ilevel 0 rsp 0xffffc80250c66c20
[  46.4075056] curlwp 0xffffb38908fd2b80 pid 1369.1248 lowest kstack 0xffffc80250c622c0
Stopped in pid 1369.1248 (syz-executor.5) at    netbsd:breakpoint+0x5:  leave
?
breakpoint() at netbsd:breakpoint+0x5
db_panic() at netbsd:db_panic+0xec sys/ddb/db_panic.c:71
vpanic() at netbsd:vpanic+0x2f0 sys/kern/subr_prf.c:288
panic() at netbsd:panic+0x49 sys/kern/subr_prf.c:1116
kmem_intr_free() at netbsd:kmem_intr_free+0x578 kmem_size_check sys/kern/subr_kmem.c:647 [inline]
kmem_intr_free() at netbsd:kmem_intr_free+0x578 sys/kern/subr_kmem.c:395
kern_free() at netbsd:kern_free+0x86 sys/kern/kern_malloc.c:172
netexport_clear() at netbsd:netexport_clear+0x37a setpublicfs sys/nfs/nfs_export.c:748 [inline]
netexport_clear() at netbsd:netexport_clear+0x37a sys/nfs/nfs_export.c:673
netexport_unmount() at netbsd:netexport_unmount+0xa5 netexport_remove sys/nfs/nfs_export.c:340 [inline]
netexport_unmount() at netbsd:netexport_unmount+0xa5 sys/nfs/nfs_export.c:191
vfs_hooks_unmount() at netbsd:vfs_hooks_unmount+0x66 sys/kern/vfs_hooks.c:137
dounmount() at netbsd:dounmount+0x306 vfs_set_lowermount sys/kern/vfs_mount.c:429 [inline]
dounmount() at netbsd:dounmount+0x306 vfs_set_lowermount sys/kern/vfs_mount.c:401 [inline]
dounmount() at netbsd:dounmount+0x306 sys/kern/vfs_mount.c:1015
sys_unmount() at netbsd:sys_unmount+0x224 sys/kern/vfs_syscalls.c:701
sys___syscall() at netbsd:sys___syscall+0x1e4 sy_call sys/sys/syscallvar.h:65 [inline]
sys___syscall() at netbsd:sys___syscall+0x1e4 sys/kern/sys_syscall.c:90
syscall() at netbsd:syscall+0x28b sy_call sys/sys/syscallvar.h:65 [inline]
syscall() at netbsd:syscall+0x28b sy_invoke sys/sys/syscallvar.h:94 [inline]
syscall() at netbsd:syscall+0x28b sys/arch/x86/x86/syscall.c:137
--- syscall (number 22 via SYS_syscall) ---
netbsd:syscall+0x28b:
Panic string: kmem_free(0xffffb38909a89e40, 264) != allocated size 18446744073709551615; overwrote?
PID     LID S CPU     FLAGS       STRUCT LWP *               NAME WAIT
1482   1329 2   1         0   ffffb388fce17200     syz-executor.3
1482   1482 2   1  10000000   ffffb388fce17640     syz-executor.3
1334   1459 3   0       180   ffffb38909b3f780     syz-executor.2 parked
1334   1246 3   0       180   ffffb38909b3f340     syz-executor.2 parked
1334   1485 3   0       180   ffffb38908fd2300     syz-executor.2 parked
1334   1375 2   1         0   ffffb388fcc13080     syz-executor.2
1334   1334 2   0  10000000   ffffb388fcb06a40     syz-executor.2
1369   1337 2   1    100100   ffffb388fdfecb40     syz-executor.5
1369 > 1248 7   1    100000   ffffb38908fd2b80     syz-executor.5
1369   1369 2   0  10000040   ffffb388fce17a80     syz-executor.5
1205   1205 2   1       140   ffffb388fcb06600     syz-executor.3
1244   1244 2   1         0   ffffb388fdfec700     syz-executor.1
1383   1383 2   1         0   ffffb388fd0310c0     syz-executor.4
1236   1236 2   1       140   ffffb388fcc13900     syz-executor.2
1245   1245 2   1         0   ffffb388fd4a8540     syz-executor.0
929     929 2   1       140   ffffb388fbf0f2c0     syz-executor.5
1237   1076 2   1         0   ffffb388fcc134c0         syz-fuzzer
1237   1128 3   0       180   ffffb388fcb061c0         syz-fuzzer parked
1237   1199 3   0       180   ffffb388fd031500         syz-fuzzer wait
1237    944 3   0       180   ffffb388fd031940         syz-fuzzer parked
1237   1240 3   0       180   ffffb388fbde3280         syz-fuzzer wait
1237    829 3   0       180   ffffb388fc31d8c0         syz-fuzzer wait
1237   1239 3   0       180   ffffb388fd4a8100         syz-fuzzer wait
1237    942 3   0       180   ffffb388fbf0fb40         syz-fuzzer parked
1237    449 3   0       180   ffffb388fbde3b00         syz-fuzzer parked
1237   1224 3   0       180   ffffb388fc150bc0         syz-fuzzer wait
1237   1231 3   1       180   ffffb388fccad5c0         syz-fuzzer wait
1237   1235 2   1       140   ffffb388fca4c9c0         syz-fuzzer
1237   1237 3   0       180   ffffb388fbf0f700         syz-fuzzer parked
1080   1080 3   0       180   ffffb388fba9f200               sshd select
1222   1222 3   1       180   ffffb388fdfec2c0              getty nanoslp
1082   1082 3   1       180   ffffb388fc18f300              getty nanoslp
1184   1184 3   1       180   ffffb388fbde36c0              getty nanoslp
1195   1195 3   1       180   ffffb388fbac4ac0              getty ttyraw
1102   1102 3   0       180   ffffb388fccad180               sshd select
1088   1088 3   0       180   ffffb388fc18fb80             powerd kqueue
700     700 3   0       180   ffffb388fccada00            syslogd kqueue
746     746 3   0       180   ffffb388fc18f740             dhcpcd poll
747     747 3   1       180   ffffb388fd4a8980             dhcpcd poll
742     742 2   0         0   ffffb388fca4c140             dhcpcd
602     602 3   1       180   ffffb388fc31d040             dhcpcd poll
292     292 3   0       180   ffffb388fc150340             dhcpcd poll
485     485 3   1       180   ffffb388fc150780             dhcpcd poll
291     291 2   0         0   ffffb388fc31d480             dhcpcd
1         1 3   0       180   ffffb388f389c140               init wait
0      1371 5   1       200   ffffb38908fd2740           (zombie)
0       557 3   0       200   ffffb388fba9f640            physiod physiod
0       196 3   1       200   ffffb388fbac4680          pooldrain pooldrain
0       195 2   0       240   ffffb388fbac4240            ioflush
0       194 3   0       200   ffffb388fba9fa80           pgdaemon pgdaemon
0       170 3   0       200   ffffb388f99bea40               usb7 usbevt
0       169 3   0       200   ffffb388f99be600               usb6 usbevt
0       168 3   0       200   ffffb388f99be1c0               usb5 usbevt
0       167 3   0       200   ffffb388f6949a00               usb4 usbevt
0       166 3   0       240   ffffb388f69495c0               usb3 usbxfer
0       165 3   0       200   ffffb388f6949180               usb2 usbevt
0        31 3   0       200   ffffb388f389c9c0               usb1 usbevt
0        63 3   0       200   ffffb388f36ff740               usb0 usbevt
0       126 3   1       200   ffffb388f36ffb80         usbtask-dr usbtsk
0       125 3   1       200   ffffb388f37de340         usbtask-hc usbtsk
0       124 3   0       200   ffffb388f1c95b00          swwreboot swwreboot
0       123 3   0       200   ffffb388f389c580             npfgc0 npfgcw
0       122 3   1       200   ffffb388f3872980            rt_free rt_free
0       121 3   1       200   ffffb388f3872540              unpgc unpgc
0       120 3   0       200   ffffb388f3872100    key_timehandler key_timehandler
0       119 3   1       200   ffffb388f3845940    icmp6_wqinput/1 icmp6_wqinput
0       118 3   0       200   ffffb388f3845500    icmp6_wqinput/0 icmp6_wqinput
0       117 3   0       200   ffffb388f38450c0          nd6_timer nd6_timer
0       116 3   1       200   ffffb388f3840900    carp6_wqinput/1 carp6_wqinput
0       115 3   0       200   ffffb388f38404c0    carp6_wqinput/0 carp6_wqinput
0       114 3   1       200   ffffb388f3840080     carp_wqinput/1 carp_wqinput
0       113 3   0       200   ffffb388f381b8c0     carp_wqinput/0 carp_wqinput
0       112 3   1       200   ffffb388f381b480     icmp_wqinput/1 icmp_wqinput
0       111 3   0       200   ffffb388f381b040     icmp_wqinput/0 icmp_wqinput
0       110 3   0       200   ffffb388f37debc0           rt_timer rt_timer
0       109 3   0       200   ffffb388f37de780        vmem_rehash vmem_rehash
0       100 3   0       200   ffffb388f36ff300          entbutler entropy
0        99 3   0       200   ffffb388f313eb40              viomb balloon
0        98 3   1       200   ffffb388f313e700      vioif0_txrx/1 vioif0_txrx
0        97 3   0       200   ffffb388f313e2c0      vioif0_txrx/0 vioif0_txrx
0        30 3   1       200   ffffb388f1c956c0           scsibus0 sccomp
0        29 3   0       200   ffffb388f1c95280               pms0 pmsreset
0        28 3   1       200   ffffb388f1bb5ac0            xcall/1 xcall
0        27 1   1       200   ffffb388f1bb5680          softser/1
0        26 1   1       200   ffffb388f1bb5240          softclk/1
0        25 1   1       200   ffffb388f1b98a80          softbio/1
0        24 1   1       200   ffffb388f1b98640          softnet/1
0        23 1   1       201   ffffb388f1b98200             idle/1
0        22 3   1       200   ffffb38a1ff33a40           lnxsyswq lnxsyswq
0        21 3   1       200   ffffb38a1ff33600           lnxubdwq lnxubdwq
0        20 3   0       200   ffffb38a1ff331c0           lnxpwrwq lnxpwrwq
0        19 3   1       200   ffffb38a1ff42a00           lnxlngwq lnxlngwq
0        18 3   1       200   ffffb38a1ff425c0           lnxhipwq lnxhipwq
0        17 3   1       200   ffffb38a1ff42180           lnxrcugc lnxrcugc
0        16 3   0       200   ffffb38a1ff599c0             sysmon smtaskq
0        15 3   1       200   ffffb38a1ff59580         pmfsuspend pmfsuspend
0        14 3   1       200   ffffb38a1ff59140           pmfevent pmfevent
0        13 3   0       200   ffffb38a1ff6c980         sopendfree sopendfr
0        12 3   0       200   ffffb38a1ff6c540             ifwdog ifwdog
0        11 3   1       200   ffffb38a1ff6c100            iflnkst iflnkst
0        10 3   1       200   ffffb38a20f97940           nfssilly nfssilly
0         9 3   1       200   ffffb38a20f97500           pooldisp pooldisp
0         8 3   1       200   ffffb38a20f970c0          modunload mod_unld
0         7 3   0       200   ffffb38a20fc2900            xcall/0 xcall
0         6 1   0       200   ffffb38a20fc24c0          softser/0
0         5 1   0       200   ffffb38a20fc2080          softclk/0
0         4 1   0       200   ffffb38a20fed8c0          softbio/0
0         3 1   0       200   ffffb38a20fed480          softnet/0
0         2 1   0       201   ffffb38a20fed040             idle/0
0    >    0 7   0       240   ffffffff86795c80            swapper
[Locks tracked through LWPs]

****** LWP 1334.1334 (syz-executor.2) @ 0xffffb388fcb06a40, l_stat=2

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:uvmspace_alloc+0x335 uvm_map_setup sys/uvm/uvm_map.c:4786 [inline])
* Lock 0 (initialized at netbsd:uvmspace_alloc+0x335 uvmspace_init sys/uvm/uvm_map.c:4129 [inline])
* Lock 0 (initialized at netbsd:uvmspace_alloc+0x335 sys/uvm/uvm_map.c:4108)
lock address : ffffb388fc2ab048
type         : sleep/adaptive
initialized  : netbsd:uvmspace_alloc+0x335
shared holds :                  0 exclusive:                  0
shares wanted:                  1 exclusive:                  0
relevant cpu :                  0 last held:              65535
relevant lwp : 0xffffb388fcb06a40 last held: 000000000000000000
last locked  : netbsd:uvm_fault_internal+0x20b
unlocked*    : netbsd:uvm_fault_lower_enter+0x889
owner/count  : 000000000000000000 flags    : 000000000000000000
Turnstile: no active turnstile for this lock.

****** LWP 1369.1248 (syz-executor.5) @ 0xffffb38908fd2b80, l_stat=7

*** Locks held:

* Lock 0 (initialized at netbsd:vfsinit+0x303 sys/kern/vfs_init.c:440)
lock address : netbsd:vfs_hooks_lock
type         : sleep/adaptive
initialized  : netbsd:vfsinit+0x303
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xffffb38908fd2b80 last held: 0xffffb38908fd2b80
last locked* : netbsd:vfs_hooks_unmount+0x21
unlocked     : netbsd:vfs_hooks_reexport+0xcb
owner field  : 0xffffb38908fd2b80 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

* Lock 1 (initialized at netbsd:nfsserver_modcmd+0xd5 sys/nfs/nfs_serv.c:125)
lock address : netbsd:netexport_lock
type         : sleep/adaptive
initialized  : netbsd:nfsserver_modcmd+0xd5
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xffffb38908fd2b80 last held: 0xffffb38908fd2b80
last locked* : netbsd:netexport_unmount+0x34
unlocked     : netbsd:mountd_set_exports_list.part.0+0x32b
owner/count  : 0xffffb38908fd2b80 flags    : 0x0000000000000004
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 747.747 (dhcpcd) @ 0xffffb388fd4a8980, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x1c sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x1c
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  0
relevant lwp : 0xffffb388fd4a8980 last held: 000000000000000000
last locked  : 0
unlocked*    : 0
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 742.742 (dhcpcd) @ 0xffffb388fca4c140, l_stat=2

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x1c sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x1c
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  0 last held:                  0
relevant lwp : 0xffffb388fca4c140 last held: 000000000000000000
last locked  : 0
unlocked*    : 0
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 485.485 (dhcpcd) @ 0xffffb388fc150780, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x1c sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x1c
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  0
relevant lwp : 0xffffb388fc150780 last held: 000000000000000000
last locked  : 0
unlocked*    : 0
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 291.291 (dhcpcd) @ 0xffffb388fc31d480, l_stat=2

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x1c sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x1c
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  0 last held:                  0
relevant lwp : 0xffffb388fc31d480 last held: 000000000000000000
last locked  : 0
unlocked*    : 0
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 0.26 (softclk/1) @ 0xffffb388f1bb5240, l_stat=1

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x1c sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x1c
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  0
relevant lwp : 0xffffb388f1bb5240 last held: 000000000000000000
last locked  : 0
unlocked*    : 0
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 0.11 (iflnkst) @ 0xffffb38a1ff6c100, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x1c sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x1c
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  0
relevant lwp : 0xffffb38a1ff6c100 last held: 000000000000000000
last locked  : 0
unlocked*    : 0
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 0.5 (softclk/0) @ 0xffffb38a20fc2080, l_stat=1

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x1c sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x1c
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  0 last held:                  0
relevant lwp : 0xffffb38a20fc2080 last held: 000000000000000000
last locked  : 0
unlocked*    : 0
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 0.0 (swapper) @ 0xffffffff86795c80, l_stat=7

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x1c sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x1c
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  0 last held:                  0
relevant lwp : 0xffffffff86795c80 last held: 000000000000000000
last locked  : 0
unlocked*    : 0
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

[Locks tracked through CPUs]

******* Locks held on cpu1:

* Lock 0 (initialized at netbsd:kprintf_init+0x72 sys/kern/subr_prf.c:156)
lock address : netbsd:kprintf_mtx
type         : spin
initialized  : netbsd:kprintf_init+0x72
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xffffb38908fd2b80 last held: 0xffffb38908fd2b80
last locked* : netbsd:kprintf_lock+0x50
unlocked     : netbsd:kprintf_unlock+0x70
owner field  : 0x0000000000000800 wait/spin:                0/1

              PAGE FLAG   PQ            UOBJECT              UANON
0xffffc80000007180 0045 00000000                0x0                0x0
0xffffc80000007200 0045 00000000                0x0                0x0
0xffffc80000007280 0045 00000000                0x0                0x0
0xffffc80000007300 0045 00000000                0x0                0x0
0xffffc80000007380 0045 00000000                0x0                0x0
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0xffffc80000013e00 0001 00000000                0x0                0x0
0xffffc80000013e80 0001 00000000                0x0                0x0
0xffffc80000013f00 0001 00000000                0x0                0x0
0xffffc80000013f80 0001 00000000                0x0                0x0
0xffffc80000014000 0001 00000000                0x0                0x0
0xffffc80000014080 0001 00000000                0x0                0x0
0xffffc80000014100 0001 00000000                0x0                0x0
0xffffc80000014180 0001 00000000                0x0                0x0
0xffffc80000014200 0041 00000000                0x0                0x0
0xffffc80000014280 0041 00000000                0x0                0x0
0xffffc80000014300 0041 00000000                0x0                0x0
0xffffc80000014380 0041 00000000                0x0                0x0
0xffffc80000014400 0041 00000000                0x0                0x0
0xffffc80000014480 0041 00000000                0x0                0x0
0xffffc80000014500 0041 00000000                0x0                0x0
0xffffc80000014580 0041 00000000                0x0                0x0
0xffffc80000014600 0041 00000000                0x0                0x0
0xffffc80000014680 0041 00000000                0x0                0x0
0xffffc80000014700 0041 00000000                0x0                0x0
0xffffc80000014780 0041 00000000                0x0                0x0
0xffffc80000014800 0041 00000000                0x0                0x0
0xffffc80000014880 0041 00000000                0x0                0x0
0xffffc80000014900 0041 00000000                0x0                0x0
0xffffc80000014980 0041 00000000                0x0                0x0
0xffffc80000014a00 0041 00000000                0x0                0x0
0xffffc80000014a80 0041 00000000                0x0                0x0
0xffffc80000014b00 0041 00000000                0x0                0x0
0xffffc80000014b80 0041 00000000                0x0                0x0
0xffffc80000014c00 0041 00000000                0x0                0x0
0xffffc80000014c80 0041 00000000                0x0                0x0
0xffffc80000014d00 0041 00000000                0x0                0x0
0xffffc80000014d80 0041 00000000                0x0                0x0
0xffffc80000014e00 0041 00000000                0x0                0x0
0xffffc80000014e80 0041 00000000                0x0                0x0
0xffffc80000014f00 0041 00000000                0x0                0x0
0xffffc80000014f80 0041 00000000                0x0                0x0
0xffffc80000015000 0041 00000000                0x0                0x0
0xffffc80000015080 0041 00000000                0x0                0x0
0xffffc80000015100 0041 00000000                0x0                0x0
0xffffc80000015180 0041 00000000                0x0                0x0
0xffffc80000015200 0041 00000000                0x0                0x0
0xffffc80000015280 0041 00000000                0x0                0x0
0xffffc80000015300 0041 00000000                0x0                0x0
0xffffc80000015380 0041 00000000                0x0                0x0
0xffffc80000015400 0041 00000000                0x0                0x0
0xffffc80000015480 0041 00000000                0x0                0x0
0xffffc80000015500 0041 00000000                0x0                0x0
0xffffc80000015580 0041 00000000                0x0                0x0
0xffffc80000015600 0041 00000000                0x0                0x0
0xffffc80000015680 0041 00000000                0x0                0x0
0xffffc80000015700 0041 00000000                0x0                0x0
0xffffc80000015780 0041 00000000                0x0                0x0
0xffffc80000015800 0041 00000000                0x0                0x0
0xffffc80000015880 0041 00000000                0x0                0x0
0xffffc80000015900 0041 00000000                0x0                0x0
0xffffc80000015980 0001 00000000                0x0                0x0
0xffffc80000015a00 0001 00000000                0x0                0x0
0xffffc80000015a80 0001 00000000                0x0                0x0
0xffffc80000015b00 0001 00000000                0x0                0x0
0xffffc80000015b80 0001 00000000                0x0                0x0
0xffffc80000015c00 0001 00000000                0x0                0x0
0xffffc80000015c80 0001 00000000                0x0                0x0
0xffffc80000015d00 0001 00000000                0x0                0x0
0xffffc80000015d80 0001 00000000                0x0                0x0
0xffffc80000015e00 0001 00000000                0x0                0x0
0xffffc80000015e80 0001 00000000                0x0                0x0
0xffffc80000015f00 0001 00000000                0x0                0x0
0xffffc80000015f80 0001 00000000                0x0                0x0
0xffffc80000016000 0001 00000000                0x0                0x0
0xffffc80000016080 0001 00000000                0x0                0x0
0xffffc80000016100 0001 00000000                0x0                0x0
0xffffc80000016180 0001 00000000                0x0                0x0
0xffffc80000016200 0001 00000000                0x0                0x0
0xffffc80000016280 0001 00000000                0x0                0x0
0xffffc80000016300 0001 00000000                0x0                0x0
0xffffc80000016380 0001 00000000                0x0                0x0
0xffffc80000016400 0001 00000000                0x0                0x0
0xffffc80000016480 0001 00000000                0x0                0x0
0xffffc80000016500 0001 00000000                0x0                0x0
0xffffc80000016580 0001 00000000                0x0                0x0
0xffffc80000016600 0001 00000000                0x0                0x0
0xffffc80000016680 0001 00000000                0x0                0x0
0xffffc80000016700 0001 00000000                0x0                0x0
0xffffc80000016780 0001 00000000                0x0                0x0
0xffffc80000016800 0001 00000000                0x0                0x0
0xffffc80000016880 0001 00000000                0x0                0x0
0xffffc80000016900 0001 00000000                0x0                0x0
0xffffc80000016980 0001 00000000                0x0                0x0
0xffffc80000016a00 0001 00000000                0x0                0x0
0xffffc80000016a80 0001 00000000                0x0                0x0
0xffffc80000016b00 0001 00000000                0x0                0x0
0xffffc80000016b80 0001 00000000                0x0                0x0
0xffffc80000016c00 0001 00000000                0x0                0x0
0xffffc80000016c80 0001 00000000                0x0                0x0
0xffffc80000016d00 0001 00000000                0x0                0x0
0xffffc80000016d80 0001 00000000                0x0                0x0
0xffffc80000016e00 0001 00000000                0x0                0x0
0xffffc80000016e80 0001 00000000                0x0                0x0
0xffffc80000016f00 0001 00000000                0x0                0x0
0xffffc80000016f80 0001 00000000                0x0                0x0
0xffffc80000017000 0001 00000000                0x0                0x0
0xffffc80000017080 0001 00000000                0x0                0x0
0xffffc80000017100 0001 00000000                0x0                0x0
0xffffc80000017180 0001 00000000                0x0                0x0
0xffffc80000017200 0001 00000000                0x0                0x0
0xffffc80000017280 0001 00000000                0x0                0x0
0xffffc80000017300 0001 00000000                0x0                0x0
0xffffc80000017380 0001 00000000                0x0                0x0
0xffffc80000017400 0001 00000000                0x0                0x0
0xffffc80000017480 0041 00000000                0x0                0x0
0xffffc80000017500 0041 00000000                0x0                0x0
0xffffc80000017580 0041 00000000                0x0                0x0
0xffffc80000017600 0041 00000000                0x0                0x0
0xffffc80000017680 0041 00000000                0x0                0x0
0xffffc80000017700 0041 00000000                0x0                0x0
0xffffc80000017780 0041 00000000                0x0                0x0
0xffffc80000017800 0041 00000000                0x0                0x0
0xffffc80000017880 0041 00000000                0x0                0x0
0xffffc80000017900 0041 00000000                0x0                0x0
0xffffc80000017980 0041 00000000                0x0                0x0
0xffffc80000017a00 0041 00000000                0x0                0x0
0xffffc80000017a80 0041 00000000                0x0                0x0
0xffffc80000017b00 0041 00000000                0x0                0x0
0xffffc80000017b80 0041 00000000                0x0                0x0
0xffffc80000017c00 0041 00000000                0x0                0x0
0xffffc80000017c80 0041 00000000                0x0                0x0
0xffffc80000017d00 0041 00000000                0x0                0x0
0xffffc80000017d80 0041 00000000                0x0                0x0
0xffffc80000017e00 0041 00000000                0x0                0x0
0xffffc80000017e80 0041 00000000                0x0                0x0
0xffffc80000017f00 0041 00000000                0x0                0x0
0xffffc80000017f80 0041 00000000                0x0                0x0
0xffffc80000018000 0041 00000000                0x0                0x0
0xffffc80000018080 0041 00000000                0x0                0x0
0xffffc80000018100 0041 00000000                0x0                0x0
0xffffc80000018180 0041 00000000                0x0                0x0
0xffffc80000018200 0041 00000000                0x0                0x0
0xffffc80000018280 0041 00000000                0x0                0x0
0xffffc80000018300 0041 00000000                0x0                0x0
0xffffc80000018380 0041 00000000                0x0                0x0
0xffffc80000018400 0041 00000000                0x0                0x0
0xffffc80000018480 0041 00000000                0x0                0x0
0xffffc80000018500 0041 00000000                0x0                0x0
0xffffc80000018580 0041 00000000                0x0                0x0
0xffffc80000018600 0041 00000000                0x0                0x0
0xffffc80000018680 0041 00000000                0x0                0x0
0xffffc80000018700 0041 00000000                0x0                0x0
0xffffc80000018780 0041 00000000                0x0                0x0
0xffffc80000018800 0041 00000000                0x0                0x0
0xffffc80000018880 0041 00000000                0x0                0x0
0xffffc80000018900 0041 00000000                0x0                0x0
0xffffc80000018980 0041 00000000                0x0                0x0
0xffffc80000018a00 0041 00000000                0x0                0x0
0xffffc80000018a80 0041 00000000                0x0                0x0
0xffffc80000018b00 0001 00000000                0x0                0x0
0xffffc80000018b80 0001 00000000                0x0                0x0
0xffffc80000018c00 0001 00000000                0x0                0x0
0xffffc80000018c80 0001 00000000                0x0                0x0
0xffffc80000018d00 0001 00000000                0x0                0x0
0xffffc80000018d80 0001 00000000                0x0                0x0
0xffffc80000018e00 0001 00000000                0x0                0x0
0xffffc80000018e80 0001 00000000                0x0                0x0
0xffffc80000018f00 0001 00000000                0x0                0x0
0xffffc80000018f80 0001 00000000                0x0                0x0
0xffffc80000019000 0001 00000000                0x0                0x0
0xffffc80000019080 0001 00000000                0x0                0x0
0xffffc80000019100 0001 00000000                0x0                0x0
0xffffc80000019180 0001 00000000                0x0                0x0
0xffffc80000019200 0001 00000000                0x0                0x0
0xffffc80000019280 0001 00000000                0x0                0x0
0xffffc80000019300 0001 00000000                0x0                0x0
0xffffc80000019380 0001 00000000                0x0                0x0
0xffffc80000019400 0001 00000000                0x0                0x0
0xffffc80000019480 0001 00000000                0x0                0x0
0xffffc80000019500 0001 00000000                0x0                0x0
0xffffc80000019580 0001 00000000                0x0                0x0
0xffffc80000019600 0001 00000000                0x0                0x0
0xffffc80000019680 0001 00000000                0x0                0x0
0xffffc80000019700 0001 00000000                0x0                0x0
0xffffc80000019780 0001 00000000                0x0                0x0
0xffffc80000019800 0001 00000000                0x0                0x0
0xffffc80000019880 0001 00000000                0x0                0x0
0xffffc80000019900 0001 00000000                0x0                0x0
0xffffc80000019980 0001 00000000                0x0                0x0
0xffffc80000019a00 0001 00000000                0x0                0x0
0xffffc80000019a80 0001 00000000                0x0                0x0
0xffffc80000019b00 0001 00000000                0x0                0x0
0xffffc80000019b80 0001 00000000                0x0                0x0
0xffffc80000019c00 0001 00000000                0x0                0x0
0xffffc80000019c80 0001 00000000                0x0                0x0
0xffffc80000019d00 0001 00000000                0x0                0x0
0xffffc80000019d80 0001 00000000                0x0                0x0
0xffffc80000019e00 0001 00000000                0x0                0x0
0xffffc80000019e80 0001 00000000                0x0                0x0
0xffffc80000019f00 0001 00000000                0x0                0x0
0xffffc80000019f80 0001 00000000                0x0                0x0
0xffffc8000001a000 0001 00000000                0x0                0x0
0xffffc8000001a080 0001 00000000                0x0                0x0
0xffffc8000001a100 0001 00000000                0x0                0x0
0xffffc8000001a180 0001 00000000                0x0                0x0
0xffffc8000001a200 0001 00000000                0x0                0x0
0xffffc8000001a280 0001 00000000                0x0                0x0
0xffffc8000001a300 0001 00000000                0x0                0x0
0xffffc8000001a380 0001 00000000                0x0                0x0
0xffffc8000001a400 0001 00000000                0x0                0x0
0xffffc8000001a480 0001 00000000                0x0                0x0
0xffffc8000001a500 0001 00000000                0x0                0x0
0xffffc8000001a580 0001 00000000                0x0                0x0
0xffffc8000001a600 0041 00000000                0x0                0x0
0xffffc8000001a680 0041 00000000                0x0                0x0
0xffffc8000001a700 0041 00000000                0x0                0x0
0xffffc8000001a780 0041 00000000                0x0                0x0
0xffffc8000001a800 0041 00000000                0x0                0x0
0xffffc8000001a880 0041 00000000                0x0                0x0
0xffffc8000001a900 0041 00000000                0x0                0x0
0xffffc8000001a980 0041 00000000                0x0                0x0
0xffffc8000001aa00 0041 00000000                0x0                0x0
0xffffc8000001aa80 0041 00000000                0x0                0x0
0xffffc8000001ab00 0041 00000000                0x0                0x0
0xffffc8000001ab80 0041 00000000                0x0                0x0
0xffffc8000001ac00 0041 00000000                0x0                0x0
0xffffc800

---
This report is generated by a bot. It may contain errors.
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syzbot will keep track of this issue. See:
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If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

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(See the list of subsystem names on the web dashboard)

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#syz dup: exact-subject-of-another-report

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#syz undup

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