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Re: assert failed: sc->sc_parent->dk_rawopens > NUM



Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
assert failed: sc->sc_parent->dk_rawopens > NUM

[  58.7321969] panic: kernel diagnostic assertion "sc->sc_parent->dk_rawopens > 0" failed: file "/syzkaller/jobs/netbsd/kernel/sys/dev/dkwedge/dk.c", line 1224 
[  58.7467173] cpu1: Begin traceback...
[  58.7667166] vpanic() at netbsd:vpanic+0xc9d
[  58.8067181] kern_assert() at netbsd:kern_assert+0x228
[  58.8567182] dklastclose() at netbsd:dklastclose+0x553 sys/dev/dkwedge/dk.c:1223
[  58.9067147] dkwedge_detach() at netbsd:dkwedge_detach+0x497 dkwedge_cleanup_parent sys/dev/dkwedge/dk.c:585 [inline]
[  58.9067147] dkwedge_detach() at netbsd:dkwedge_detach+0x497 sys/dev/dkwedge/dk.c:618
[  58.9567167] config_detach() at netbsd:config_detach+0xf9e sys/kern/subr_autoconf.c:2045
[  59.0067149] dkwedge_del1() at netbsd:dkwedge_del1+0x54b sys/dev/dkwedge/dk.c:574
[  59.0567166] dkwedge_delall1() at netbsd:dkwedge_delall1+0x2b0
[  59.0967144] disk_ioctl() at netbsd:disk_ioctl+0xc96
[  59.1467174] dk_ioctl() at netbsd:dk_ioctl+0x6d5 sys/dev/dksubr.c:642
[  59.1967187] sdioctl() at netbsd:sdioctl+0x4b5 sys/dev/scsipi/sd.c:1005
[  59.2467175] cdev_ioctl() at netbsd:cdev_ioctl+0x43a sys/kern/subr_devsw.c:1250
[  59.2867200] spec_ioctl() at netbsd:spec_ioctl+0x2c6
[  59.3367166] VOP_IOCTL() at netbsd:VOP_IOCTL+0x2f0
[  59.3867176] vn_ioctl() at netbsd:vn_ioctl+0x337 sys/kern/vfs_vnops.c:868
[  59.4367164] sys_ioctl() at netbsd:sys_ioctl+0xd84 sys/kern/sys_generic.c:675
[  59.4767158] sys___syscall() at netbsd:sys___syscall+0x2c6 sys/kern/sys_syscall.c:90
[  59.5267214] syscall() at netbsd:syscall+0x60c sy_invoke sys/sys/syscallvar.h:94 [inline]
[  59.5267214] syscall() at netbsd:syscall+0x60c sys/arch/x86/x86/syscall.c:138
[  59.5367139] --- syscall (number 54 via SYS_syscall) ---
[  59.5567174] netbsd:syscall+0x60c:
[  59.5567174] cpu1: End traceback...
[  59.5667179] fatal breakpoint trap in supervisor mode
[  59.5667179] trap type 1 code 0 rip 0xffffffff802228ad cs 0x8 rflags 0x282 cr2 0x7f7f76a0ff00 ilevel 0 rsp 0xffffc400c7b3af30
[  59.5767052] curlwp 0xffffc4001353c180 pid 1253.1197 lowest kstack 0xffffc400c7b342c0
Stopped in pid 1253.1197 (syz-executor.0) at    netbsd:breakpoint+0x5:  leave
?
breakpoint() at netbsd:breakpoint+0x5
vpanic() at netbsd:vpanic+0xc9d
kern_assert() at netbsd:kern_assert+0x228
dklastclose() at netbsd:dklastclose+0x553 sys/dev/dkwedge/dk.c:1223
dkwedge_detach() at netbsd:dkwedge_detach+0x497 dkwedge_cleanup_parent sys/dev/dkwedge/dk.c:585 [inline]
dkwedge_detach() at netbsd:dkwedge_detach+0x497 sys/dev/dkwedge/dk.c:618
config_detach() at netbsd:config_detach+0xf9e sys/kern/subr_autoconf.c:2045
dkwedge_del1() at netbsd:dkwedge_del1+0x54b sys/dev/dkwedge/dk.c:574
dkwedge_delall1() at netbsd:dkwedge_delall1+0x2b0
disk_ioctl() at netbsd:disk_ioctl+0xc96
dk_ioctl() at netbsd:dk_ioctl+0x6d5 sys/dev/dksubr.c:642
sdioctl() at netbsd:sdioctl+0x4b5 sys/dev/scsipi/sd.c:1005
cdev_ioctl() at netbsd:cdev_ioctl+0x43a sys/kern/subr_devsw.c:1250
spec_ioctl() at netbsd:spec_ioctl+0x2c6
VOP_IOCTL() at netbsd:VOP_IOCTL+0x2f0
vn_ioctl() at netbsd:vn_ioctl+0x337 sys/kern/vfs_vnops.c:868
sys_ioctl() at netbsd:sys_ioctl+0xd84 sys/kern/sys_generic.c:675
sys___syscall() at netbsd:sys___syscall+0x2c6 sys/kern/sys_syscall.c:90
syscall() at netbsd:syscall+0x60c sy_invoke sys/sys/syscallvar.h:94 [inline]
syscall() at netbsd:syscall+0x60c sys/arch/x86/x86/syscall.c:138
--- syscall (number 54 via SYS_syscall) ---
netbsd:syscall+0x60c:
Panic string: kernel diagnostic assertion "sc->sc_parent->dk_rawopens > 0" failed: file "/syzkaller/jobs/netbsd/kernel/sys/dev/dkwedge/dk.c", line 1224
PID    LID S CPU     FLAGS       STRUCT LWP *               NAME WAIT
1207  1207 2   0         0   ffffc4001353c5c0       syz-execprog
324    324 2   0         0   ffffc4001340d9c0     syz-executor.4
335    335 2   1         0   ffffc4001340d580     syz-executor.3
1253 >1197 7   1         0   ffffc4001353c180     syz-executor.0
1253  1253 2   0  10000000   ffffc4001340d140     syz-executor.0
1115  1115 2   1         0   ffffc400133f9980     syz-executor.5
1213 >1213 7   0     40140   ffffc400133f9540     syz-executor.0
1201  1201 2   0     40000   ffffc400133f9100     syz-executor.1
1198   330 3   1       180   ffffc400122ceb00       syz-execprog wait
1198   331 3   1       180   ffffc400122ce6c0       syz-execprog parked
1198  1202 2   1       100   ffffc400122ce280       syz-execprog
1198  1203 3   1       180   ffffc40012b874c0       syz-execprog parked
1198  1206 3   0       1c0   ffffc40012b87900       syz-execprog wait
1198  1199 3   1       180   ffffc40012b87080       syz-execprog wait
1198  1130 3   0       1c0   ffffc400133d9940       syz-execprog parked
1198  1230 2   0       140   ffffc400133d9500       syz-execprog
1198  1198 3   0     40180   ffffc400133d90c0       syz-execprog parked
1384  1384 3   1       180   ffffc40012b618c0               sshd select
1080  1080 3   0       180   ffffc400125f3340              getty nanoslp
1081  1081 3   0       180   ffffc400121c4ac0              getty nanoslp
1151  1151 3   1       180   ffffc400121c4680              getty nanoslp
1127  1127 3   1       1c0   ffffc400121a9a40              getty ttyraw
1104  1104 3   1       180   ffffc40012b61480               sshd select
958    958 3   0       180   ffffc4001243cb40             powerd kqueue
693    693 3   0       180   ffffc40012b61040            syslogd kqueue
547    547 3   0       180   ffffc400125f3bc0             dhcpcd poll
742    742 3   0       180   ffffc400124e6740             dhcpcd poll
465    465 3   0       180   ffffc400125f3780             dhcpcd poll
594    594 3   0       180   ffffc4001243c2c0             dhcpcd poll
292    292 3   0       180   ffffc400124e6b80             dhcpcd poll
290    290 3   0       180   ffffc4001243c700             dhcpcd poll
289    289 3   0       180   ffffc400124e6300             dhcpcd poll
1        1 3   0       180   ffffc40011ece100               init wait
0      973 3   0       200   ffffc400121c1200            physiod physiod
0      195 3   0       200   ffffc400121c4240          pooldrain pooldrain
0      194 3   1       200   ffffc400121c1a80            ioflush syncer
0      193 3   1       200   ffffc400121c1640           pgdaemon pgdaemon
0      172 3   1       200   ffffc400121a9600               usb7 usbevt
0      170 3   0       200   ffffc400121a91c0               usb6 usbevt
0      168 3   0       200   ffffc40012111a00               usb5 usbevt
0      166 3   0       200   ffffc400121115c0               usb4 usbevt
0      165 3   0       200   ffffc40012111180               usb3 usbevt
0       31 3   0       200   ffffc4001207a9c0               usb2 usbevt
0       63 3   0       200   ffffc4001207a580               usb1 usbevt
0      126 3   1       200   ffffc4001207a140               usb0 usbevt
0      125 3   1       200   ffffc40011ece980         usbtask-dr usbtsk
0      124 3   1       200   ffffc400103f5b00         usbtask-hc usbtsk
0      123 3   0       200   ffffc40011ece540             npfgc0 npfgcw
0      122 3   1       200   ffffc40011ec1940            rt_free rt_free
0      121 3   1       200   ffffc40011ec1500              unpgc unpgc
0      120 3   0       200   ffffc40011ec10c0    key_timehandler key_timehandler
0      119 3   1       200   ffffc40011ebc900    icmp6_wqinput/1 icmp6_wqinput
0      118 3   0       200   ffffc40011ebc4c0    icmp6_wqinput/0 icmp6_wqinput
0      117 3   0       200   ffffc40011ebc080          nd6_timer nd6_timer
0      116 3   1       200   ffffc40011ce0bc0    carp6_wqinput/1 carp6_wqinput
0      115 3   0       200   ffffc40011ce0780    carp6_wqinput/0 carp6_wqinput
0      114 3   1       200   ffffc40011ce0340     carp_wqinput/1 carp_wqinput
0      113 3   0       200   ffffc40011e9b8c0     carp_wqinput/0 carp_wqinput
0      112 3   1       200   ffffc40011e9b480     icmp_wqinput/1 icmp_wqinput
0      111 3   0       200   ffffc40011cddb80     icmp_wqinput/0 icmp_wqinput
0      110 3   0       200   ffffc40011cdd740           rt_timer rt_timer
0      109 3   0       200   ffffc40011e9b040        vmem_rehash vmem_rehash
0      100 3   0       200   ffffc40011cdd300          entbutler entropy
0       99 3   1       200   ffffc400117e0b40              viomb balloon
0       98 3   1       200   ffffc400117e0700      vioif0_txrx/1 vioif0_txrx
0       97 3   0       200   ffffc400117e02c0      vioif0_txrx/0 vioif0_txrx
0       30 3   0       200   ffffc400103f56c0           scsibus0 sccomp
0       29 3   0       200   ffffc400103f5280               pms0 pmsreset
0       28 3   1       200   ffffc400103daac0            xcall/1 xcall
0       27 1   1       200   ffffc400103da680          softser/1
0       26 1   1       200   ffffc400103da240          softclk/1
0       25 1   1       200   ffffc400103d8a80          softbio/1
0       24 1   1       200   ffffc400103d8640          softnet/1
0       23 1   1       201   ffffc400103d8200             idle/1
0       22 3   1       200   ffffc4000f1f3a40           lnxsyswq lnxsyswq
0       21 3   0       200   ffffc4000f1f3600           lnxubdwq lnxubdwq
0       20 3   0       200   ffffc4000f1f31c0           lnxpwrwq lnxpwrwq
0       19 3   0       200   ffffc4000f1f1a00           lnxlngwq lnxlngwq
0       18 3   0       200   ffffc4000f1f15c0           lnxhipwq lnxhipwq
0       17 3   0       200   ffffc4000f1f1180           lnxrcugc lnxrcugc
0       16 3   0       200   ffffc4000f1ec9c0             sysmon smtaskq
0       15 3   0       200   ffffc4000f1ec580         pmfsuspend pmfsuspend
0       14 3   0       200   ffffc4000f1ec140           pmfevent pmfevent
0       13 3   0       200   ffffc4000f1e8980         sopendfree sopendfr
0       12 3   0       200   ffffc4000f1e8540             ifwdog ifwdog
0       11 3   0       200   ffffc4000f1e8100            iflnkst iflnkst
0       10 3   0       200   ffffc4000f1df940           nfssilly nfssilly
0        9 3   0       200   ffffc4000f1df500             vdrain vdrain
0        8 3   1       200   ffffc4000f1df0c0          modunload mod_unld
0        7 3   0       200   ffffc4000ebdb900            xcall/0 xcall
0        6 1   0       200   ffffc4000ebdb4c0          softser/0
0    >   5 7   0       200   ffffc4000ebdb080          softclk/0
0        4 1   0       200   ffffc4000ebd98c0          softbio/0
0        3 1   0       200   ffffc4000ebd9480          softnet/0
0        2 1   0       201   ffffc4000ebd9040             idle/0
0        0 3   0       200   ffffffff86868e00            swapper uvm
[Locks tracked through LWPs]

****** LWP 335.335 (syz-executor.3) @ 0xffffc4001340d580, l_stat=2

*** Locks held:

* Lock 0 (initialized at netbsd:pmap_ctor+0xc0 sys/arch/x86/x86/pmap.c:2857)
lock address : ffffc40012b7e700
type         : sleep/adaptive
initialized  : netbsd:pmap_ctor+0xc0
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xffffc4001340d580 last held: 0xffffc4001340d580
last locked* : netbsd:pmap_enter_ma+0xd5d
unlocked     : netbsd:pmap_extract+0x72d
owner field  : 0xffffc4001340d580 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 1253.1197 (syz-executor.0) @ 0xffffc4001353c180, l_stat=7

*** Locks held:

* Lock 0 (initialized at netbsd:dkwedge_init+0x31 sys/dev/dkwedge/dk.c:857)
lock address : netbsd:dkwedges_lock
type         : sleep/adaptive
initialized  : netbsd:dkwedge_init+0x31
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xffffc4001353c180 last held: 0xffffc4001353c180
last locked* : netbsd:dkwedge_detach+0x66
unlocked     : netbsd:dkwedge_del1+0x40c
owner/count  : 0xffffc4001353c180 flags    : 0x0000000000000004
Turnstile: no active turnstile for this lock.

* Lock 1 (initialized at netbsd:disk_init+0xa8 sys/kern/subr_disk.c:169)
lock address : ffffc40011ed51e8
type         : sleep/adaptive
initialized  : netbsd:disk_init+0xa8
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xffffc4001353c180 last held: 0xffffc4001353c180
last locked* : netbsd:dkwedge_detach+0x303
unlocked     : netbsd:dkclose+0x656
owner field  : 0xffffc4001353c180 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

* Lock 2 (initialized at netbsd:disk_init+0x79 sys/kern/subr_disk.c:168)
lock address : ffffc40011cdcd10
type         : sleep/adaptive
initialized  : netbsd:disk_init+0x79
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xffffc4001353c180 last held: 0xffffc4001353c180
last locked* : netbsd:dkwedge_detach+0x480
unlocked     : netbsd:dkwedge_detach+0x885
owner field  : 0xffffc4001353c180 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 1115.1115 (syz-executor.5) @ 0xffffc400133f9980, l_stat=2

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:uvm_obj_init+0x88 sys/uvm/uvm_object.c:70)
lock address : ffffc400121ae440
type         : sleep/adaptive
initialized  : netbsd:uvm_obj_init+0x88
shared holds :                  0 exclusive:                  0
shares wanted:                  1 exclusive:                  0
relevant cpu :                  1 last held:              65535
relevant lwp : 0xffffc400133f9980 last held: 000000000000000000
last locked  : netbsd:uvm_fault_internal+0x4ccf
unlocked*    : netbsd:uvm_fault_lower_enter+0x1b49
owner/count  : 000000000000000000 flags    : 000000000000000000
Turnstile: no active turnstile for this lock.

****** LWP 1198.1202 (syz-execprog) @ 0xffffc400122ce280, l_stat=2

*** Locks held:

* Lock 0 (initialized at netbsd:amap_ctor+0xdf sys/uvm/uvm_amap.c:265)
lock address : ffffc40013379ac0
type         : sleep/adaptive
initialized  : netbsd:amap_ctor+0xdf
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xffffc400122ce280 last held: 0xffffc400122ce280
last locked* : netbsd:uvm_fault_internal+0x1d28
unlocked     : netbsd:uvm_fault_upper_enter+0x12e9
owner/count  : 0xffffc400122ce280 flags    : 0x0000000000000004
Turnstile: no active turnstile for this lock.

* Lock 1 (initialized at netbsd:pmap_ctor+0xc0 sys/arch/x86/x86/pmap.c:2857)
lock address : ffffc400124e01c0
type         : sleep/adaptive
initialized  : netbsd:pmap_ctor+0xc0
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xffffc400122ce280 last held: 0xffffc400122ce280
last locked* : netbsd:pmap_enter_ma+0xd5d
unlocked     : netbsd:pmap_extract+0x72d
owner field  : 0xffffc400122ce280 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 742.742 (dhcpcd) @ 0xffffc400124e6740, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x43 sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x43
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  0 last held:                  0
relevant lwp : 0xffffc400124e6740 last held: 000000000000000000
last locked  : 0
unlocked*    : 0
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 465.465 (dhcpcd) @ 0xffffc400125f3780, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x43 sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x43
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  0 last held:                  0
relevant lwp : 0xffffc400125f3780 last held: 000000000000000000
last locked  : 0
unlocked*    : 0
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 290.290 (dhcpcd) @ 0xffffc4001243c700, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x43 sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x43
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  0 last held:                  0
relevant lwp : 0xffffc4001243c700 last held: 000000000000000000
last locked  : 0
unlocked*    : 0
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 289.289 (dhcpcd) @ 0xffffc400124e6300, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x43 sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x43
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  0 last held:                  0
relevant lwp : 0xffffc400124e6300 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) @ 0xffffc4000f1e8100, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x43 sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x43
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  0 last held:                  0
relevant lwp : 0xffffc4000f1e8100 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) @ 0xffffc4000ebdb080, l_stat=7

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x43 sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x43
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  0 last held:                  0
relevant lwp : 0xffffc4000ebdb080 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) @ 0xffffffff86868e00, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at netbsd:module_hook_init+0x43 sys/kern/kern_module_hook.c:132)
lock address : netbsd:module_hook
type         : sleep/adaptive
initialized  : netbsd:module_hook_init+0x43
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  0 last held:                  0
relevant lwp : 0xffffffff86868e00 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:main+0x354 sys/kern/init_main.c:303)
lock address : netbsd:kernel_lock
type         : spin
initialized  : netbsd:main+0x354
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xffffc4001353c180 last held: 0xffffc4001353c180
last locked* : netbsd:config_detach+0x74
unlocked     : netbsd:config_detach+0x12b5
curcpu holds :                  1 wanted by: 000000000000000000

* Lock 1 (initialized at netbsd:kprintf_init+0xdc sys/kern/subr_prf.c:157)
lock address : netbsd:kprintf_mtx
type         : spin
initialized  : netbsd:kprintf_init+0xdc
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xffffc4001353c180 last held: 0xffffc4001353c180
last locked* : netbsd:vpanic+0x624
unlocked     : netbsd:aprint_normal+0x3bb
owner field  : 0x0000000000000800 wait/spin:                0/1

              PAGE FLAG   PQ            UOBJECT              UANON
0xffffc40000017180 0001 00000000                0x0                0x0
0xffffc40000017200 0041 00000000                0x0                0x0
0xffffc40000017280 0041 00000000                0x0                0x0
0xffffc40000017300 0041 00000000                0x0                0x0
0xffffc40000017380 0041 00000000                0x0                0x0
0xffffc40000017400 0041 00000000                0x0                0x0
0xffffc40000017480 0041 00000000                0x0                0x0
0xffffc40000017500 0041 00000000                0x0                0x0
0xffffc40000017580 0041 00000000                0x0                0x0
0xffffc40000017600 0041 00000000                0x0                0x0
0xffffc40000017680 0041 00000000                0x0                0x0
0xffffc40000017700 0041 00000000                0x0                0x0
0xffffc40000017780 0041 00000000                0x0                0x0
0xffffc40000017800 0041 00000000                0x0                0x0
0xffffc40000017880 0041 00000000                0x0                0x0
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0xffffc40000024180 0001 00000000                0x0                0x0
0xffffc40000024200 0001 00000000                0x0                0x0
0xffffc40000024280 0001 00000000                0x0                0x0
0xffffc40000024300 0001 00000000                0x0                0x0
0xffffc40000024380 0001 00000000                0x0                0x0
0xffffc40000024400 0001 00000000                0x0                0x0
0xffffc40000024480 0001 00000000                0x0                0x0
0xffffc40000024500 0001 00000000                0x0                0x0
0xffffc40000024580 0001 00000000                0x0                0x0
0xffffc40000024600 0001 00000000                0x0                0x0
0xffffc40000024680 0001 00000000                0x0                0x0
0xffffc40000024700 0001 00000000                0x0                0x0
0xffffc40000024780 0001 00000000                0x0                0x0
0xffffc40000024800 0001 00000000                0x0                0x0
0xffffc40000024880 0001 00000000                0x0                0x0
0xffffc40000024900 0001 00000000                0x0                0x0
0xffffc40000024980 0001 00000000                0x0                0x0
0xffffc40000024a00 0001 00000000                0x0                0x0
0xffffc40000024a80 0001 00000000                0x0                0x0
0xffffc40000024b00 0001 00000000                0x0                0x0
0xffffc40000024b80 0001 00000000                0x0                0x0
0xffffc40000024c00 0001 00000000                0x0                0x0
0xffffc40000024c80 0001 00000000                0x0                0x0
0xffffc40000024d00 0001 00000000                0x0                0x0
0xffffc40000024d80 0001 00000000                0x0                0x0
0xffffc40000024e00 0001 00000000                0x0                0x0
0xffffc40000024e80 0001 00000000                0x0                0x0
0xffffc40000024f00 0001 00000000                0x0                0x0
0xffffc40000024f80 0001 00000000                0x0                0x0
0xffffc40000025000 0001 00000000                0x0                0x0
0xffffc40000025080 0001 00000000                0x0                0x0
0xffffc40000025100 0001 00000000                0x0                0x0
0xffffc40000025180 0001 00000000                0x0                0x0
0xffffc40000025200 0001 00000000                0x0                0x0
0xffffc40000025280 0001 00000000                0x0                0x0
0xffffc40000025300 0001 00000000                0x0                0x0
0xffffc40000025380 0001 00000000                0x0                0x0
0xffffc40000025400 0001 00000000                0x0                0x0
0xffffc40000025480 0001 00000000                0x0                0x0
0xffffc40000025500 0001 00000000                0x0                0x0
0xffffc40000025580 0001 00000000                0x0                0x0
0xffffc40000025600 0001 00000000                0x0                0x0
0xffffc40000025680 0001 00000000                0x0                0x0
0xffffc40000025700 0001 00000000                0x0                0x0
0xffffc40000025780 0001 00000000                0x0                0x0
0xffffc40000025800 0001 00000000                0x0                0x0
0xffffc40000025880 0001 00000000                0x0                0x0
0xffffc40000025900 0001 00000000                0x0                0x0
0xffffc40000025980 0001 00000000                0x0                0x0
0xffffc40000025a00 0001 00000000                0x0                0x0
0xffffc40000025a80 0001 00000000                0x0                0x0
0xffffc40000025b00 0001 00000000                0x0                0x0
0xffffc40000025b80 0001 00000000                0x0                0x0
0xffffc40000025c00 0001 00000000                0x0                0x0
0xffffc40000025c80 0001 00000000                0x0                0x0
0xffffc40000025d00 0001 00000000                0x0                0x0
0xffffc40000025d80 0001 00000000                0x0                0x0
0xffffc40000025e00 0001 00000000                0x0                0x0
0xffffc40000025e80 0001 00000000                0x0                0x0
0xffffc40000025f00 0001 00000000                0x0                0x0
0xffffc40000025f80 0001 00000000                0x0                0x0
0xffffc40000026000 0001 00000000                0x0                0x0
0xffffc40000026080 0001 00000000                0x0                0x0
0xffffc40000026100 0001 00000000                0x0                0x0
0xffffc40000026180 0001 00000000                0x0                0x0
0xffffc40000026200 0001 00000000                0x0                0x0
0xffffc40000026280 0001 00000000                0x0                0x0
0xffffc40000026300 0001 00000000                0x0                0x0
0xffffc40000026380 0001 00000000                0x0                0x0
0xffffc40000026400 0001 00000000                0x0                0x0
0xffffc40000026480 0001 00000000                0x0                0x0
0xffffc40000026500 0001 00000000                0x0                0x0
0xffffc40000026580 0001 00000000                0x0                0x0
0xffffc40000026600 0001 00000000                0x0                0x0
0xffffc40000026680 0001 00000000                0x0                0x0
0xffffc40000026700 0001 00000000                0x0                0x0
0xffffc40000026780 0001 00000000                0x0                0x0
0xffffc40000026800 0001 00000000                0x0                0x0
0xffffc40000026880 0001 00000000                0x0                0x0
0xffffc40000026900 0001 00000000                0x0                0x0
0xffffc40000026980 0001 00000000                0x0                0x0
0xffffc40000026a00 0001 00000000                0x0                0x0
0xffffc40000026a80 0001 00000000                0x0                0x0
0xffffc40000026b00 0001 00000000                0x0                0x0
0xffffc40000026b80 0001 00000000                0x0                0x0
0xffffc40000026c00 0001 00000000                0x0                0x0
0xffffc40000026c80 0001 00000000                0x0                0x0
0xffffc40000026d00 0001 00000000                0x0                0x0
0xffffc40000026d80 0001 00000000                0x0                0x0
0xffffc40000026e00 0001 00000000                0x0                0x0
0xffffc40000026e80 0001 00000000                0x0                0x0
0xffffc40000026f00 0001 00000000                0x0                0x0
0xffffc40000026f80 0001 00000000                0x0                0x0
0xffffc40000027000 0001 00000000                0x0                0x0
0xffffc40000027080 0001 00000000                0x0                0x0
0xffffc40000027100 0001 00000000                0x0                0x0
0xffffc40000027180 0001 00000000                0x0                0x0
0xffffc40000027200 0001 00000000                0x0                0x0
0xffffc40000027280 0001 00000000                0x0                0x0
0xffffc40000027300 0001 00000000                0x0                0x0
0xffffc40000027380 0001 00000000                0x0                0x0
0xffffc40000027400 0001 00000000                0x0                0x0
0xffffc40000027480 0001 00000000                0x0                0x0
0xffffc40000027500 0001 00000000                0x0                0x0
0xffffc40000027580 0001 00000000                0x0                0x0
0xffffc40000027600 0001 00000000                0x0                0x0
0xffffc40000027680 0001 00000000                0x0                0x0
0xffffc40000027700 0001 00000000                0x0                0x0
0xffffc40000027780 0001 00000000                0x0                0x0
0xffffc40000027800 0001 00000000                0x0                0x0
0xffffc40000027880 0001 00000000                0x0                0x0
0xffffc40000027900 0001 00000000                0x0                0x0
0xffffc40000027980 0001 00000000                0x0                0x0
0xffffc40000027a00 0001 00000000                0x0                0x0
0xffffc40000027a80 0001 00000000                0x0                0x0
0xffffc40000027b00 0001 00000000                0x0                0x0
0xffffc40000027b80 0001 00000000                0x0                0x0
0xffffc40000027c00 0001 00000000                0x0                0x0
0xffffc40000027c80 0001 00000000                0x0                0x0
0xffffc40000027d00 0001 00000000                0x0                0x0
0xffffc40000027d80 0001 00000000                0x0                0x0
0xffffc40000027e00 0001 00000000                0x0                0x0
0xffffc40000027e80 0001 00000000                0x0                0x0
0xffffc40000027f00 0001 00000000                0x0                0x0
0xffffc40000027f80 0001 00000000                0x0                0x0
0xffffc40000028000 0001 00000000                0x0                0x0
0xffffc40000028080 0001 00000000                0x0                0x0
0xffffc40000028100 0001 00000000                0x0                0x0
0xffffc40000028180 0001 00000000                0x0                0x0
0xffffc40000028200 0001 00000000                0x0                0x0
0xffffc40000028280 0001 00000000                0x0                0x0
0xffffc40000028300 0001 00000000                0x0                0x0
0xffffc40000028380 0001 00000000                0x0                0x0
0xffffc40000028400 0001 00000000                0x0                0x0
0xffffc40000028480 0001 00000000                0x0                0x0
0xffffc40000028500 0001 00000000                0x0                0x0
0xffffc40000028580 0001 00000000                0x0                0x0
0xffffc40000028600 0001 00000000                0x0                0x0
0xffffc40000028680 0001 00000000                0x0                0x0
0xffffc40000028700 0001 00000000                0x0                0x0
0xffffc40000028780 0001 00000000                0x0                0x0
0xffffc40000028800 0001 00000000                0x0                0x0
0xffffc40000028880 0001 00000000                0x0                0x0
0xffffc40000028900 0001 00000000                0x0                0x0
0xffffc40000028980 0001 00000000                0x0                0x0
0xffffc40000028a00 0001 00000000                0x0                0x0
0xffffc40000028a80 0001 00000000                0x0                0x0
0xffffc40000028b00 0001 00000000                0x0                0x0
0xffffc40000028b80 0001 00000000                0x0                0x0
0xffffc40000028c00 0001 00000000                0x0                0x0
0xffffc40000028c80 0001 00000000                0x0                0x0
0xffffc40000028d00 0001 00000000                0x0                0x0
0xffffc40000028d80 0001 00000000                0x0                0x0
0xffffc40000028e00 0001 00000000                0x0                0x0
0xffffc40000028e80 0001 00000000                0x0                0x0
0xffffc40000028f00 0001 00000000                0x0                0x0
0xffffc40000028f80 0001 00000000                0x0                0x0
0xffffc40000029000 0001 00000000                0x0                0x0
0xffffc40000029080 0001 00000000                0x0                0x0
0xffffc40000029100 0001 00000000                0x0                0x0
0xffffc40000029180 0001 00000000                0x0                0x0
0xffffc40000029200 0001 00000000                0x0                0x0
0xffffc40000029280 0001 00000000                0x0                0x0
0xffffc40000029300 0001 00000000                0x0                0x0
0xffffc40000029380 0001 00000000                0x0                0x0
0xffffc40000029400 0001 00000000                0x0                0x0
0xffffc40000029480 0001 00000000                0x0                0x0
0xffffc40000029500 0001 00000000                0x0                0x0
0xffffc40000029580 0001 00000000                0x0                0x0
0xffffc40000029600 0001 00000000                0x0                0x0
0xffffc40000029680 0001 00000000                0x0                0x0
0xffffc40000029700 0001 00000000                0x0                0x0
0xffffc40000029780 0001 00000000                0x0                0x0
0xffffc40000029800 0001 00000000                0x0                0x0
0xffffc40000029880 0001 00000000                0x0                0x0
0xffffc40000029900 0001 00000000                0x0                0x0
0xffffc40000029980 0001 00000000                0x0                0x0
0xffffc40000029a00 0001 00000000                0x0                0x0
0xffffc40000029a80 0001 00000000                0x0                0x0
0xffffc40000029b00 0001 00000000                0x0                0x0
0xffffc40000029b80 0001 00000000                0x0                0x0
0xffffc40000029c00 0001 00000000                0x0                0x0
0xffffc40000029c80 0001 00000000                0x0                0x0
0xffffc40000029d00 0001 00000000                0x0                0x0
0xffffc40000029d80 0001 00000000                0x0                0x0
0xffffc40000029e00 0001 00000000                0x0                0x0
0xffffc40000029e80 0001 00000000                0x0                0x0
0xffffc40000029f00 0001 00000000                0x0                0x0
0xffffc40000029f80 0001 00000000                0x0                0x0
0xffffc4000002a000 0001 00000000                0x0                0x0
0xffffc4000002a080 0001 00000000                0x0                0x0
0xffffc4000002a100 0001 00000000                0x0                0x0
0xffffc4000002a180 0001 00000000                0x0                0x0
0xffffc4000002a200 0001 00000000                0x0                0x0
0xffffc4000002a280 0001 00000000                0x0                0x0
0xffffc4000002a300 0001 00000000                0x0                0x0
0xffffc4000002a380 0001 00000000                0x0                0x0
0xffffc4000002a400 0001 00000000                0x0                0x0
0xffffc4000002a480 0001 00000000                0x0                0x0
0xffffc4000002a500 0001 00000000                0x0                0x0
0xffffc4000002a580 0001 00000000                0x0                0x0
0xffffc4000002a600 0001 00000000                0x0                0x0
0xffffc4000002a680 0001 00000000                0x0                0x0
0xffffc4000002a700 0001 00000000                0x0                0x0
0xffffc4000002a780 0001 00000000      

Tested on:

commit:         6ac77be6 Localize addr and buf. NFC.
git tree:       https://github.com/NetBSD/src trunk
console output: https://syzkaller.appspot.com/x/log.txt?x=17b04b8b080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=739e57438eb9ed9e
dashboard link: https://syzkaller.appspot.com/bug?extid=4076654b4f6ab4c97c19
compiler:       Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63

Note: no patches were applied.

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