panic: l diagnostic assertion "sn->sn_opencnt" failed: file "/syzkaller/managers/ci2-netbsd/kernel/sys/miscfs/specfs/spe

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syzbot

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May 25, 2024, 12:28:21 AMMay 25
to syzkaller-...@googlegroups.com
Hello,

syzbot found the following issue on:

HEAD commit: c4cfd333d39f Move __UCONTEXT_SIZE inside _KERNEL like before
git tree: netbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=11017cb2980000
kernel config: https://syzkaller.appspot.com/x/.config?x=fab579639ba4bf0a
dashboard link: https://syzkaller.appspot.com/bug?extid=e8b928d344b0a79ab420
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/2f28684a1394/disk-c4cfd333.raw.xz
netbsd.gdb: https://storage.googleapis.com/syzbot-assets/cd968723be7a/netbsd-c4cfd333.gdb.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e8b928...@syzkaller.appspotmail.com

[ 208.404kerne1093] panic: l diagnostic assertion "sn->sn_opencnt" failed: file "/syzkaller/managers/ci2-netbsd/kernel/sys/miscfs/specfs/spec_vnops.c", line 1705
[ 208.4440626] cpu1: Begin traceback...
[ 208.4840660] vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:288
[ 208.5640664] _sub_D_65535_0() at netbsd:_sub_D_65535_0+-0xc91c
[ 208.6540666] spec_close() at netbsd:spec_close+0x73c sys/miscfs/specfs/spec_vnops.c:1705
[ 208.7440652] VOP_CLOSE() at netbsd:VOP_CLOSE+0xfc sys/kern/vnode_if.c:605
[ 208.8340678] vn_close() at netbsd:vn_close+0x52 sys/kern/vfs_vnops.c:493
[ 208.9240666] closef() at netbsd:closef+0x1d7 sys/kern/kern_descrip.c:861
[ 209.0140634] fd_free() at netbsd:fd_free+0x532 sys/kern/kern_descrip.c:1597
[ 209.0940663] exit1() at netbsd:exit1+0x306 sys/kern/kern_exit.c:302
[ 209.1840688] sys_exit() at netbsd:sys_exit+0x92 sys/kern/kern_exit.c:181
[ 209.2740663] syscall() at netbsd:syscall+0x246 sy_call sys/sys/syscallvar.h:65 [inline]
[ 209.2740663] syscall() at netbsd:syscall+0x246 sy_invoke sys/sys/syscallvar.h:94 [inline]
[ 209.2740663] syscall() at netbsd:syscall+0x246 sys/arch/x86/x86/syscall.c:137
[ 209.3040682] --- syscall (number 1) ---
[ 209.3340761] netbsd:syscall+0x246:
[ 209.3440729] cpu1: End traceback...
[ 209.3540660] fatal breakpoint trap in supervisor mode
[ 209.3640671] trap type 1 code 0 rip 0xffffffff8023240d cs 0x8 rflags 0x286 cr2 0x624078 ilevel 0 rsp 0xffffc402488bd840
[ 209.3940625] curlwp 0xffffc40013f4d300 pid 505.505 lowest kstack 0xffffc402488b62c0
Stopped in pid 505.505 (syz-executor.5) at netbsd:breakpoint+0x5: leave
?
breakpoint() at netbsd:breakpoint+0x5
db_panic() at netbsd:db_panic+0x105 sys/ddb/db_panic.c:71
vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:288
_sub_D_65535_0() at netbsd:_sub_D_65535_0+-0xc91c
spec_close() at netbsd:spec_close+0x73c sys/miscfs/specfs/spec_vnops.c:1705
VOP_CLOSE() at netbsd:VOP_CLOSE+0xfc sys/kern/vnode_if.c:605
vn_close() at netbsd:vn_close+0x52 sys/kern/vfs_vnops.c:493
closef() at netbsd:closef+0x1d7 sys/kern/kern_descrip.c:861
fd_free() at netbsd:fd_free+0x532 sys/kern/kern_descrip.c:1597
exit1() at netbsd:exit1+0x306 sys/kern/kern_exit.c:302
sys_exit() at netbsd:sys_exit+0x92 sys/kern/kern_exit.c:181
syscall() at netbsd:syscall+0x246 sy_call sys/sys/syscallvar.h:65 [inline]
syscall() at netbsd:syscall+0x246 sy_invoke sys/sys/syscallvar.h:94 [inline]
syscall() at netbsd:syscall+0x246 sys/arch/x86/x86/syscall.c:137
--- syscall (number 1) ---
netbsd:syscall+0x246:
Panic string: kernel diagnostic assertion "sn->sn_opencnt" failed: file "/syzkaller/managers/ci2-netbsd/kernel/sys/miscfs/specfs/spec_vnops.c", line 1705
PID LID S CPU FLAGS STRUCT LWP * NAME WAIT
509 509 2 0 0 ffffc40013e216c0 syz-executor.1
508 508 2 0 0 ffffc40013f9c040 sh
505 > 505 7 1 10000000 ffffc40013f4d300 syz-executor.5
498 498 2 1 0 ffffc40013e63b40 syz-executor.2
988 988 3 1 180 ffffc40013462540 syz-executor.4 wait
2380 2380 3 1 180 ffffc400129c6b40 syz-executor.1 wait
928 928 2 1 140 ffffc40012d192c0 syz-executor.5
408 408 2 0 0 ffffc40012c07a80 syz-executor.3
406 406 2 0 1000000 ffffc40012cf7200 syz-executor.0
2155 2155 3 1 180 ffffc40012c07640 syz-executor.5 parked
2250 1971 2 0 1000040 ffffc40012d658c0 syz-executor.5
2250 1737 3 1 1100000 ffffc40012d65040 syz-executor.5 vfork
1755 1755 3 1 180 ffffc40014034900 syz-executor.1 parked
1736 1736 3 0 180 ffffc40012cd9a00 syz-executor.2 parked
930 2773 2 1 0 ffffc40012b80100 syz-fuzzer
930 581 3 1 180 ffffc40012c4bb40 syz-fuzzer wait
930 1210 2 1 0 ffffc40013e63700 syz-fuzzer
930 1386 3 1 180 ffffc40013e21b00 syz-fuzzer wait
930 1239 3 1 180 ffffc40012beb600 syz-fuzzer parked
930 1207 3 1 180 ffffc40012beb1c0 syz-fuzzer wait
930 1078 3 0 180 ffffc40013dfc240 syz-fuzzer wait
930 1246 3 0 180 ffffc40013de0640 syz-fuzzer wait
930 1242 3 0 180 ffffc40013dbe600 syz-fuzzer parked
930 1247 3 0 180 ffffc40013dbe1c0 syz-fuzzer parked
930 1185 3 0 180 ffffc40012c87bc0 syz-fuzzer parked
930 1070 3 0 180 ffffc40013426b80 syz-fuzzer wait
930 449 3 0 180 ffffc40013426740 syz-fuzzer parked
930 1073 2 1 0 ffffc4001344f900 syz-fuzzer
930 930 3 1 180 ffffc400134560c0 syz-fuzzer parked
1241 1241 3 0 180 ffffc40012b9e580 sshd select
1229 1229 3 1 180 ffffc40012a25300 getty nanoslp
1233 1233 3 1 180 ffffc400126d9bc0 getty nanoslp
1235 1235 3 1 180 ffffc40013462100 getty nanoslp
803 803 3 0 180 ffffc40012a78480 getty ttyraw
1108 1108 3 0 180 ffffc400133ac240 sshd select
952 952 3 0 180 ffffc40012cb7500 powerd kqueue
701 701 3 0 180 ffffc400134458c0 syslogd kqueue
544 544 3 1 180 ffffc40012c2ab00 dhcpcd poll
562 562 3 0 180 ffffc40012cce580 dhcpcd poll
437 437 3 1 180 ffffc40012c908c0 dhcpcd poll
604 604 3 0 180 ffffc40012c90040 dhcpcd poll
487 487 3 0 180 ffffc40012da3500 dhcpcd poll
338 338 3 0 180 ffffc40012da30c0 dhcpcd poll
292 292 3 0 180 ffffc40012d85900 dhcpcd poll
1 1 3 0 180 ffffc4001286f180 init wait
0 1254 5 0 240 ffffc400133b9b00 (zombie)
0 574 3 0 200 ffffc400129c46c0 physiod physiod
0 196 3 0 200 ffffc400129c6700 pooldrain pooldrain
0 195 2 0 240 ffffc400129c62c0 ioflush
0 194 3 1 200 ffffc400129c4b00 pgdaemon pgdaemon
0 167 3 1 200 ffffc40012976ac0 usb7 usbevt
0 172 3 1 200 ffffc40012976680 usb6 usbevt
0 170 3 0 200 ffffc40012976240 usb5 usbevt
0 168 3 1 200 ffffc4001291ea80 usb4 usbevt
0 166 3 0 200 ffffc4001291e640 usb3 usbevt
0 165 3 0 200 ffffc4001291e200 usb2 usbevt
0 31 3 1 200 ffffc400128caa40 usb1 usbevt
0 63 3 0 200 ffffc400128ca600 usb0 usbevt
0 126 3 0 200 ffffc400128ca1c0 usbtask-dr usbtsk
0 125 3 0 200 ffffc4001286fa00 usbtask-hc usbtsk
0 124 3 0 200 ffffc40010d66b00 swwreboot swwreboot
0 123 2 1 240 ffffc4001286f5c0 npfgc0
0 122 3 0 200 ffffc400128669c0 rt_free rt_free
0 121 3 0 200 ffffc40012866580 unpgc unpgc
0 120 3 0 200 ffffc40012866140 key_timehandler key_timehandler
0 119 3 1 200 ffffc40012703980 icmp6_wqinput/1 icmp6_wqinput
0 118 3 0 200 ffffc40012703540 icmp6_wqinput/0 icmp6_wqinput
0 117 2 1 200 ffffc40012703100 nd6_timer
0 116 3 1 200 ffffc400126fc940 carp6_wqinput/1 carp6_wqinput
0 115 3 0 200 ffffc400126fc500 carp6_wqinput/0 carp6_wqinput
0 114 3 1 200 ffffc400126fc0c0 carp_wqinput/1 carp_wqinput
0 113 3 0 200 ffffc400126ed900 carp_wqinput/0 carp_wqinput
0 112 3 1 200 ffffc400126ed4c0 icmp_wqinput/1 icmp_wqinput
0 111 3 0 200 ffffc400126ed080 icmp_wqinput/0 icmp_wqinput
0 110 3 0 200 ffffc400126db040 rt_timer rt_timer
0 109 3 0 200 ffffc400126db8c0 vmem_rehash vmem_rehash
0 100 3 0 200 ffffc400126d7300 entbutler entropy
0 99 3 0 200 ffffc400120bdb40 viomb balloon
0 98 3 1 200 ffffc400120bd700 vioif0_txrx/1 vioif0_txrx
0 97 3 0 200 ffffc400120bd2c0 vioif0_txrx/0 vioif0_txrx
0 30 3 0 200 ffffc40010d666c0 scsibus0 sccomp
0 29 3 0 200 ffffc40010d66280 pms0 pmsreset
0 28 3 1 200 ffffc40010cacac0 xcall/1 xcall
0 27 1 1 200 ffffc40010cac680 softser/1
0 26 1 1 200 ffffc40010cac240 softclk/1
0 25 1 1 200 ffffc40010ca9a80 softbio/1
0 24 1 1 200 ffffc40010ca9640 softnet/1
0 23 1 1 201 ffffc40010ca9200 idle/1
0 22 3 0 200 ffffc4000fb55a40 lnxsyswq lnxsyswq
0 21 3 0 200 ffffc4000fb55600 lnxubdwq lnxubdwq
0 20 3 0 200 ffffc4000fb551c0 lnxpwrwq lnxpwrwq
0 19 3 0 200 ffffc4000fb54a00 lnxlngwq lnxlngwq
0 18 3 0 200 ffffc4000fb545c0 lnxhipwq lnxhipwq
0 17 3 0 200 ffffc4000fb54180 lnxrcugc lnxrcugc
0 16 3 0 200 ffffc4000fb4d9c0 sysmon smtaskq
0 15 3 0 200 ffffc4000fb4d580 pmfsuspend pmfsuspend
0 14 3 0 200 ffffc4000fb4d140 pmfevent pmfevent
0 13 3 0 200 ffffc4000fb4a980 sopendfree sopendfr
0 12 3 0 200 ffffc4000fb4a540 ifwdog ifwdog
0 11 3 1 200 ffffc4000fb4a100 iflnkst iflnkst
0 10 3 0 200 ffffc4000fb3b940 nfssilly nfssilly
0 9 3 1 200 ffffc4000fb3b500 pooldisp pooldisp
0 8 3 1 200 ffffc4000fb3b0c0 modunload mod_unld
0 7 3 0 200 ffffc4000fb32900 xcall/0 xcall
0 6 1 0 200 ffffc4000fb324c0 softser/0
0 5 1 0 200 ffffc4000fb32080 softclk/0
0 4 1 0 200 ffffc4000fb308c0 softbio/0
0 3 1 0 200 ffffc4000fb30480 softnet/0
0 2 1 0 201 ffffc4000fb30040 idle/0
0 > 0 7 0 240 ffffffff83350140 swapper
[Locks tracked through LWPs]

****** LWP 509.509 (syz-executor.1) @ 0xffffc40013e216c0, l_stat=2

*** Locks held:

* Lock 0 (initialized at netbsd:fork1+0x365 sys/kern/kern_fork.c:366)
lock address : ffffc40012a71ad0
type : sleep/adaptive
initialized : netbsd:fork1+0x365
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 1
relevant lwp : 0xffffc40013e216c0 last held: 0xffffc40013e216c0
last locked* : netbsd:execve_loadvm+0x308
unlocked : 0
owner/count : 0xffffc40013e216c0 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 508.508 (sh) @ 0xffffc40013f9c040, l_stat=2

*** Locks held:

* Lock 0 (initialized at netbsd:fork1+0x365 sys/kern/kern_fork.c:366)
lock address : ffffc40012ab7e90
type : sleep/adaptive
initialized : netbsd:fork1+0x365
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 1
relevant lwp : 0xffffc40013f9c040 last held: 0xffffc40013f9c040
last locked* : netbsd:execve_loadvm+0x308
unlocked : 0
owner/count : 000000000000000000 flags : 000000000000000000
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 505.505 (syz-executor.5) @ 0xffffc40013f4d300, l_stat=7

*** Locks held:

* Lock 0 (initialized at netbsd:fork1+0x365 sys/kern/kern_fork.c:366)
lock address : ffffc4001286add0
type : sleep/adaptive
initialized : netbsd:fork1+0x365
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 1
relevant lwp : 0xffffc40013f4d300 last held: 0xffffc40013f4d300
last locked* : netbsd:exit1+0x2f2
unlocked : 0
owner/count : 0xffffc40013f4d300 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

* Lock 1 (initialized at netbsd:vcache_alloc+0x3e sys/kern/vfs_vnode.c:1438)
lock address : ffffc400141eecc0
type : sleep/adaptive
initialized : netbsd:vcache_alloc+0x3e
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 1
relevant lwp : 0xffffc40013f4d300 last held: 0xffffc40013f4d300
last locked* : netbsd:genfs_lock+0x160
unlocked : 0
owner/count : 0xffffc40013f4d300 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

* Lock 2 (initialized at netbsd:devsw_init+0x77 sys/kern/subr_devsw.c:378)
lock address : netbsd:device_lock
type : sleep/adaptive
initialized : netbsd:devsw_init+0x77
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 1
relevant lwp : 0xffffc40013f4d300 last held: 0xffffc40013f4d300
last locked* : netbsd:spec_close+0x1e7
unlocked : netbsd:spec_io_exit.isra.0+0x17a
owner field : 0xffffc40013f4d300 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 406.406 (syz-executor.0) @ 0xffffc40012cf7200, l_stat=2

*** Locks held:

* Lock 0 (initialized at netbsd:fork1+0x365 sys/kern/kern_fork.c:366)
lock address : ffffc40012d04ad0
type : sleep/adaptive
initialized : netbsd:fork1+0x365
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 1
relevant lwp : 0xffffc40012cf7200 last held: 0xffffc40012cf7200
last locked* : netbsd:exit1+0x2f2
unlocked : netbsd:do_ptrace+0x920
owner/count : 0xffffc40012cf7200 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

*** Locks wanted:

* Lock 0 (initialized at netbsd:uvm_obj_init+0x9a sys/uvm/uvm_object.c:70)
lock address : ffffc4001418df40
type : sleep/adaptive
initialized : netbsd:uvm_obj_init+0x9a
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 1
relevant cpu : 0 last held: 1
relevant lwp : 0xffffc40012cf7200 last held: 000000000000000000
last locked : netbsd:uvm_unmap_remove+0x698
unlocked* : netbsd:uvm_unmap_remove+0x99d
owner/count : 000000000000000000 flags : 000000000000000000
Turnstile: no active turnstile for this lock.

****** LWP 562.562 (dhcpcd) @ 0xffffc40012cce580, 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 : 0 last held: 0
relevant lwp : 0xffffc40012cce580 last held: 000000000000000000
last locked : 0
unlocked* : 0
owner field : 000000000000000000 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

****** LWP 437.437 (dhcpcd) @ 0xffffc40012c908c0, 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 : 0xffffc40012c908c0 last held: 000000000000000000
last locked : 0
unlocked* : 0
owner field : 000000000000000000 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

****** LWP 338.338 (dhcpcd) @ 0xffffc40012da30c0, 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 : 0 last held: 0
relevant lwp : 0xffffc40012da30c0 last held: 000000000000000000
last locked : 0
unlocked* : 0
owner field : 000000000000000000 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

****** LWP 292.292 (dhcpcd) @ 0xffffc40012d85900, 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 : 0 last held: 0
relevant lwp : 0xffffc40012d85900 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) @ 0xffffc40010cac240, 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 : 0xffffc40010cac240 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) @ 0xffffc4000fb4a100, 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 : 0xffffc4000fb4a100 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) @ 0xffffc4000fb32080, 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 : 0xffffc4000fb32080 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) @ 0xffffffff83350140, 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 : 0xffffffff83350140 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 cpu0:

* Lock 0 (initialized at netbsd:main+0x11e sys/kern/init_main.c:304)
lock address : netbsd:kernel_lock
type : spin
initialized : netbsd:main+0x11e
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffffffff83350140 last held: 0xffffc4000fb324c0
last locked* : netbsd:softint_dispatch+0x8ae
unlocked : netbsd:tcp_send_wrapper+0xc0
curcpu holds : 0 wanted by: 000000000000000000

* Lock 1 (initialized at netbsd:vioif_attach+0x7f1 vioif_netqueue_init sys/dev/pci/if_vioif.c:1478 [inline])
* Lock 1 (initialized at netbsd:vioif_attach+0x7f1 sys/dev/pci/if_vioif.c:586)
lock address : ffffc40010d6c4c0
type : spin
initialized : netbsd:vioif_attach+0x7f1
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffffffff83350140 last held: 0xffffc4000fb324c0
last locked* : netbsd:vioif_rx_intr+0x4f
unlocked : netbsd:softint_dispatch+0x8d3
owner field : 0x0000000000000600 wait/spin: 0/1

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

* Lock 0 (initialized at netbsd:kprintf_init+0x61 sys/kern/subr_prf.c:156)
lock address : netbsd:kprintf_mtx
type : spin
initialized : netbsd:kprintf_init+0x61
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 1
relevant lwp : 0xffffc40013f4d300 last held: 0xffffc40013f4d300
last locked* : netbsd:kprintf_lock+0x33
unlocked : netbsd:kprintf_unlock+0x53
owner field : 0x0000000000000800 wait/spin: 0/1

PAGE FLAG PQ UOBJECT UANON
0xffffc40000017180 0041 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
0xffffc40000017900 0041 00000000 0x0 0x0
0xffffc40000017980 0041 00000000 0x0 0x0
0xffffc40000017a00 0041 00000000 0x0 0x0
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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 0000000

---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup
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