assert failed: (l = dev->dv_detaching) == curlwp

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syzbot

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Aug 23, 2022, 8:20:31 PM8/23/22

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Hello,

syzbot found the following issue on:

HEAD commit: 4c639c3b58ad Fix eqos(4) to work on RK3588 as well.
git tree: netbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=157efdcb080000
kernel config: https://syzkaller.appspot.com/x/.config?x=fab579639ba4bf0a
dashboard link: https://syzkaller.appspot.com/bug?extid=6634ffd48997ae9b1eb0
compiler: g++ (Debian 10.2.1-6) 10.2.1 20210110
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=106c98a3080000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1044ac47080000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6634ff...@syzkaller.appspotmail.com

[ 55.4238570] panic: kernel diagnostic assertion "(l = dev->dv_detaching) == curlwp" failed: file "/syzkaller/managers/ci2-netbsd/kernel/sys/kern/subr_autoconf.c", line 2185 lwp 1237 [syz-executor2797] @ 0xffff9c0013cfa200 detaching
[ 55.4509942] cpu0: Begin traceback...
[ 55.4544718] vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:293
[ 55.4838473] _sub_D_65535_0() at netbsd:_sub_D_65535_0+-0x23d82
[ 55.5138483] config_detach_commit() at netbsd:config_detach_commit+0xe7 sys/kern/subr_autoconf.c:2185
[ 55.5438485] cdev_detached() at netbsd:cdev_detached+0x155 sys/kern/subr_devsw.c:1383
[ 55.5638486] vdevgone() at netbsd:vdevgone+0x1b8 sys/kern/vfs_subr.c:524
[ 55.5938504] audiodetach() at netbsd:audiodetach+0xaa sys/dev/audio/audio.c:1370
[ 55.6138502] config_detach() at netbsd:config_detach+0x38b sys/kern/subr_autoconf.c:2045
[ 55.6438481] config_detach_children() at netbsd:config_detach_children+0xda sys/kern/subr_autoconf.c:2206
[ 55.6738493] pad_detach() at netbsd:pad_detach+0x70 sys/dev/pad/pad.c:251
[ 55.7038494] config_detach() at netbsd:config_detach+0x38b sys/kern/subr_autoconf.c:2045
[ 55.7338487] fops_pad_close() at netbsd:fops_pad_close+0x86 pad_close sys/dev/pad/pad.c:423 [inline]
[ 55.7338487] fops_pad_close() at netbsd:fops_pad_close+0x86 sys/dev/pad/pad.c:433
[ 55.7538497] closef() at netbsd:closef+0x152 sys/kern/kern_descrip.c:832
[ 55.7838514] fd_free() at netbsd:fd_free+0x528 sys/kern/kern_descrip.c:1571
[ 55.8038529] exit1() at netbsd:exit1+0x306 sys/kern/kern_exit.c:301
[ 55.8338499] sigexit() at netbsd:sigexit+0x63b sys/kern/kern_sig.c:2315
[ 55.8638470] postsig() at netbsd:postsig+0x66b sys/kern/kern_sig.c:2166
[ 55.8938497] lwp_userret() at netbsd:lwp_userret+0x435 sys/kern/kern_lwp.c:1645
[ 55.9238489] mi_userret() at netbsd:mi_userret+0x3e2 x86_curlwp sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./machine/cpu.h:68 [inline]
[ 55.9238489] mi_userret() at netbsd:mi_userret+0x3e2 KPREEMPT_DISABLE sys/sys/lwp.h:543 [inline]
[ 55.9238489] mi_userret() at netbsd:mi_userret+0x3e2 sys/sys/userret.h:97
[ 55.9538507] syscall() at netbsd:syscall+0x323 sys/arch/x86/x86/syscall.c:92
[ 55.9639939] --- syscall (number 24) ---
[ 55.9738484] netbsd:syscall+0x323:
[ 55.9738484] cpu0: End traceback...
[ 55.9738484] fatal breakpoint trap in supervisor mode
[ 55.9853309] trap type 1 code 0 rip 0xffffffff80220a4d cs 0x8 rflags 0x282 cr2 0x71fd3863ed30 ilevel 0 rsp 0xffff9c02485cb0c0
[ 55.9962648] curlwp 0xffff9c0013cfa640 pid 448.448 lowest kstack 0xffff9c02485c42c0
Stopped in pid 448.448 (syz-executor2797) at netbsd:breakpoint+0x5: leave
?
breakpoint() at netbsd:breakpoint+0x5
db_panic() at netbsd:db_panic+0x105 sys/ddb/db_panic.c:69
vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:293
_sub_D_65535_0() at netbsd:_sub_D_65535_0+-0x23d82
config_detach_commit() at netbsd:config_detach_commit+0xe7 sys/kern/subr_autoconf.c:2185
cdev_detached() at netbsd:cdev_detached+0x155 sys/kern/subr_devsw.c:1383
vdevgone() at netbsd:vdevgone+0x1b8 sys/kern/vfs_subr.c:524
audiodetach() at netbsd:audiodetach+0xaa sys/dev/audio/audio.c:1370
config_detach() at netbsd:config_detach+0x38b sys/kern/subr_autoconf.c:2045
config_detach_children() at netbsd:config_detach_children+0xda sys/kern/subr_autoconf.c:2206
pad_detach() at netbsd:pad_detach+0x70 sys/dev/pad/pad.c:251
config_detach() at netbsd:config_detach+0x38b sys/kern/subr_autoconf.c:2045
fops_pad_close() at netbsd:fops_pad_close+0x86 pad_close sys/dev/pad/pad.c:423 [inline]
fops_pad_close() at netbsd:fops_pad_close+0x86 sys/dev/pad/pad.c:433
closef() at netbsd:closef+0x152 sys/kern/kern_descrip.c:832
fd_free() at netbsd:fd_free+0x528 sys/kern/kern_descrip.c:1571
exit1() at netbsd:exit1+0x306 sys/kern/kern_exit.c:301
sigexit() at netbsd:sigexit+0x63b sys/kern/kern_sig.c:2315
postsig() at netbsd:postsig+0x66b sys/kern/kern_sig.c:2166
lwp_userret() at netbsd:lwp_userret+0x435 sys/kern/kern_lwp.c:1645
mi_userret() at netbsd:mi_userret+0x3e2 x86_curlwp sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./machine/cpu.h:68 [inline]
mi_userret() at netbsd:mi_userret+0x3e2 KPREEMPT_DISABLE sys/sys/lwp.h:543 [inline]
mi_userret() at netbsd:mi_userret+0x3e2 sys/sys/userret.h:97
syscall() at netbsd:syscall+0x323 sys/arch/x86/x86/syscall.c:92
--- syscall (number 24) ---
netbsd:syscall+0x323:
Panic string: kernel diagnostic assertion "(l = dev->dv_detaching) == curlwp" failed: file "/syzkaller/managers/ci2-netbsd/kernel/sys/kern/subr_autoconf.c", line 2185 lwp 1237 [syz-executor2797] @ 0xffff9c0013cfa200 detaching
PID LID S CPU FLAGS STRUCT LWP * NAME WAIT
988 988 2 1 1040000 ffff9c0013cfaa80 syz-executor2797
448 > 448 7 0 1040000 ffff9c0013cfa640 syz-executor2797
1237 1237 3 1 1040180 ffff9c0013cfa200 syz-executor2797 fstcnt
1132 1132 2 1 1040000 ffff9c0013cdba40 syz-executor2797
1240 >1240 7 1 1040000 ffff9c0013cdb600 syz-executor2797
1235 1235 2 1 140 ffff9c0013cdb1c0 syz-executor2797
990 990 2 1 1040000 ffff9c0012d23b40 syz-executor2797
1128 1128 3 1 1c0 ffff9c00133dc6c0 syz-executor2797 wait
1195 1195 3 1 1c0 ffff9c00133dc280 syz-executor2797 wait
1191 1191 3 1 1c0 ffff9c00133b2a80 syz-executor2797 wait
1230 1230 3 1 1c0 ffff9c00133b2640 syz-executor2797 wait
1223 1223 3 1 1c0 ffff9c00133639c0 syz-executor2797 wait
1229 1229 3 0 180 ffff9c0012b71100 syz-executor2797 nanoslp
1221 1221 3 1 180 ffff9c0012acd500 sshd select
1081 1081 3 1 180 ffff9c00126dc480 getty nanoslp
1086 1086 3 1 180 ffff9c00134819c0 getty nanoslp
1071 1071 3 0 180 ffff9c0013481580 getty nanoslp
1079 1079 3 0 1c0 ffff9c001349a180 getty ttyraw
735 735 3 1 180 ffff9c00133a6a40 sshd select
1065 1065 3 1 180 ffff9c0012a628c0 powerd kqueue
693 693 2 0 40100 ffff9c0013423b40 syslogd
742 742 3 1 180 ffff9c0012c57b80 dhcpcd poll
547 547 3 0 180 ffff9c0012ca10c0 dhcpcd poll
465 465 3 1 180 ffff9c0012c57740 dhcpcd poll
594 594 3 1 180 ffff9c0012c57300 dhcpcd poll
292 292 3 0 180 ffff9c0012da24c0 dhcpcd poll
290 290 3 0 180 ffff9c0012da2080 dhcpcd poll
289 289 3 0 180 ffff9c0012d858c0 dhcpcd poll
1 1 3 0 180 ffff9c0012863180 init wait
0 861 3 0 200 ffff9c001298c280 physiod physiod
0 195 3 0 200 ffff9c001298e2c0 pooldrain pooldrain
0 194 3 0 200 ffff9c001298cb00 ioflush syncer
0 193 3 1 200 ffff9c001298c6c0 pgdaemon pgdaemon
0 172 3 1 200 ffff9c0012962680 usb7 usbevt
0 170 3 1 200 ffff9c0012962240 usb6 usbevt
0 168 3 1 200 ffff9c0012918a80 usb5 usbevt
0 166 3 1 200 ffff9c0012918640 usb4 usbevt
0 165 3 0 200 ffff9c0012918200 usb3 usbevt
0 31 3 0 200 ffff9c00128cca40 usb2 usbevt
0 63 3 0 200 ffff9c00128cc600 usb1 usbevt
0 126 3 0 200 ffff9c00128cc1c0 usb0 usbevt
0 125 3 0 200 ffff9c0012863a00 usbtask-dr usbtsk
0 124 3 0 200 ffff9c0010d76b00 usbtask-hc usbtsk
0 123 3 1 200 ffff9c00128635c0 npfgc0 npfgcw
0 122 3 0 200 ffff9c00128549c0 rt_free rt_free
0 121 3 0 200 ffff9c0012854580 unpgc unpgc
0 120 2 1 200 ffff9c0012854140 key_timehandler
0 119 3 1 200 ffff9c0012706980 icmp6_wqinput/1 icmp6_wqinput
0 118 3 0 200 ffff9c0012706540 icmp6_wqinput/0 icmp6_wqinput
0 117 2 0 200 ffff9c0012706100 nd6_timer
0 116 3 1 200 ffff9c00126fd940 carp6_wqinput/1 carp6_wqinput
0 115 3 0 200 ffff9c00126fd500 carp6_wqinput/0 carp6_wqinput
0 114 3 1 200 ffff9c00126fd0c0 carp_wqinput/1 carp_wqinput
0 113 3 0 200 ffff9c00126f0900 carp_wqinput/0 carp_wqinput
0 112 3 1 200 ffff9c00126f04c0 icmp_wqinput/1 icmp_wqinput
0 111 3 0 200 ffff9c00126f0080 icmp_wqinput/0 icmp_wqinput
0 110 2 0 200 ffff9c00126dc8c0 rt_timer
0 109 3 0 200 ffff9c00126dc040 vmem_rehash vmem_rehash
0 100 3 0 200 ffff9c00126d8300 entbutler entropy
0 99 3 1 200 ffff9c00120bcb40 viomb balloon
0 98 3 1 200 ffff9c00120bc700 vioif0_txrx/1 vioif0_txrx
0 97 3 0 200 ffff9c00120bc2c0 vioif0_txrx/0 vioif0_txrx
0 30 3 0 200 ffff9c0010d766c0 scsibus0 sccomp
0 29 3 0 200 ffff9c0010d76280 pms0 pmsreset
0 28 3 1 200 ffff9c0010cbcac0 xcall/1 xcall
0 27 1 1 200 ffff9c0010cbc680 softser/1
0 > 26 7 1 200 ffff9c0010cbc240 softclk/1
0 25 1 1 200 ffff9c0010cb9a80 softbio/1
0 24 1 1 200 ffff9c0010cb9640 softnet/1
0 23 1 1 201 ffff9c0010cb9200 idle/1
0 22 3 0 200 ffff9c000fb57a40 lnxsyswq lnxsyswq
0 21 3 0 200 ffff9c000fb57600 lnxubdwq lnxubdwq
0 20 3 0 200 ffff9c000fb571c0 lnxpwrwq lnxpwrwq
0 19 3 0 200 ffff9c000fb56a00 lnxlngwq lnxlngwq
0 18 3 0 200 ffff9c000fb565c0 lnxhipwq lnxhipwq
0 17 3 0 200 ffff9c000fb56180 lnxrcugc lnxrcugc
0 16 3 0 200 ffff9c000fb4f9c0 sysmon smtaskq
0 15 3 0 200 ffff9c000fb4f580 pmfsuspend pmfsuspend
0 14 3 0 200 ffff9c000fb4f140 pmfevent pmfevent
0 13 3 0 200 ffff9c000fb4a980 sopendfree sopendfr
0 12 3 0 200 ffff9c000fb4a540 ifwdog ifwdog
0 11 3 1 200 ffff9c000fb4a100 iflnkst iflnkst
0 10 3 0 200 ffff9c000fb3d940 nfssilly nfssilly
0 9 3 0 200 ffff9c000fb3d500 vdrain vdrain
0 8 3 1 200 ffff9c000fb3d0c0 modunload mod_unld
0 7 3 0 200 ffff9c000fb34900 xcall/0 xcall
0 6 1 0 200 ffff9c000fb344c0 softser/0
0 5 3 0 200 ffff9c000fb34080 softclk/0 tstile
0 4 1 0 200 ffff9c000fb328c0 softbio/0
0 3 1 0 200 ffff9c000fb32480 softnet/0
0 2 1 0 201 ffff9c000fb32040 idle/0
0 0 2 1 240 ffffffff83344000 swapper
[Locks tracked through LWPs]

****** LWP 988.988 (syz-executor2797) @ 0xffff9c0013cfaa80, l_stat=2

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at vcache_alloc)
lock address : 0xffff9c0013cc77c0 type : sleep/adaptive
initialized : 0xffffffff81cb4430
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 1
relevant cpu : 1 last held: 0
relevant lwp : 0xffff9c0013cfaa80 last held: 000000000000000000
last locked : 0xffffffff81ceaba6 unlocked*: 0xffffffff81ceac08
owner/count : 000000000000000000 flags : 000000000000000000
Turnstile: no active turnstile for this lock.

****** LWP 448.448 (syz-executor2797) @ 0xffff9c0013cfa640, l_stat=7

*** Locks held:

* Lock 0 (initialized at fork1)
lock address : 0xffff9c0013cddf50 type : sleep/adaptive
initialized : 0xffffffff81afe91b
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff9c0013cfa640 last held: 0xffff9c0013cfa640
last locked* : 0xffffffff81afab9b unlocked : 000000000000000000
owner/count : 0xffff9c0013cfa640 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

* Lock 1 (initialized at config_init)
lock address : 0xffffffff83579160 type : sleep/adaptive
initialized : 0xffffffff81b9481a
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff9c0013cfa640 last held: 0xffff9c0013cfa640
last locked* : 0xffffffff81b96ffc unlocked : 0xffffffff81b9793a
owner field : 0xffff9c0013cfa640 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 1237.1237 (syz-executor2797) @ 0xffff9c0013cfa200, l_stat=3

*** Locks held:

* Lock 0 (initialized at fork1)
lock address : 0xffff9c0013cddbd0 type : sleep/adaptive
initialized : 0xffffffff81afe91b
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 0
relevant lwp : 0xffff9c0013cfa200 last held: 0xffff9c0013cfa200
last locked* : 0xffffffff81afab9b unlocked : 000000000000000000
owner/count : 0xffff9c0013cfa200 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

* Lock 1 (initialized at fstrans_init)
lock address : 0xffffffff8348dc40 type : sleep/adaptive
initialized : 0xffffffff81caebd1
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 1
relevant lwp : 0xffff9c0013cfa200 last held: 0xffff9c0013cfa200
last locked* : 0xffffffff81cb1558 unlocked : 0xffffffff81cb8e7d
owner field : 0xffff9c0013cfa200 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 1132.1132 (syz-executor2797) @ 0xffff9c0013cdba40, l_stat=2

*** Locks held:

* Lock 0 (initialized at fork1)
lock address : 0xffff9c0013cdd850 type : sleep/adaptive
initialized : 0xffffffff81afe91b
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 1
relevant lwp : 0xffff9c0013cdba40 last held: 0xffff9c0013cdba40
last locked* : 0xffffffff81afab9b unlocked : 000000000000000000
owner/count : 0xffff9c0013cdba40 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 1240.1240 (syz-executor2797) @ 0xffff9c0013cdb600, l_stat=7

*** Locks held:

* Lock 0 (initialized at fork1)
lock address : 0xffff9c0013cdd4d0 type : sleep/adaptive
initialized : 0xffffffff81afe91b
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 0
relevant lwp : 0xffff9c0013cdb600 last held: 0xffff9c0013cdb600
last locked* : 0xffffffff81afab9b unlocked : 000000000000000000
owner/count : 0xffff9c0013cdb600 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

*** Locks wanted:

* Lock 0 (initialized at main)
lock address : 0xffffffff83483a40 type : spin
initialized : 0xffffffff81f755ae
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 1
relevant cpu : 1 last held: 0
relevant lwp : 0xffff9c0013cdb600 last held: 0xffff9c0013cfa640
last locked* : 0xffffffff81b54190 unlocked : 0xffffffff81acfed6
curcpu holds : 3 wanted by: 000000000000000000

****** LWP 990.990 (syz-executor2797) @ 0xffff9c0012d23b40, l_stat=2

*** Locks held:

* Lock 0 (initialized at fork1)
lock address : 0xffff9c0013c43b90 type : sleep/adaptive
initialized : 0xffffffff81afe91b
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 1
relevant lwp : 0xffff9c0012d23b40 last held: 0xffff9c0012d23b40
last locked* : 0xffffffff81afab9b unlocked : 000000000000000000
owner/count : 0xffff9c0012d23b40 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 547.547 (dhcpcd) @ 0xffff9c0012ca10c0, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff83483b40 type : sleep/adaptive
initialized : 0xffffffff81b1df61
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff9c0012ca10c0 last held: 000000000000000000
last locked : 000000000000000000 unlocked*: 000000000000000000
owner field : 000000000000000000 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

****** LWP 465.465 (dhcpcd) @ 0xffff9c0012c57740, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff83483b40 type : sleep/adaptive
initialized : 0xffffffff81b1df61
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 0
relevant lwp : 0xffff9c0012c57740 last held: 000000000000000000
last locked : 000000000000000000 unlocked*: 000000000000000000
owner field : 000000000000000000 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

****** LWP 290.290 (dhcpcd) @ 0xffff9c0012da2080, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff83483b40 type : sleep/adaptive
initialized : 0xffffffff81b1df61
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff9c0012da2080 last held: 000000000000000000
last locked : 000000000000000000 unlocked*: 000000000000000000
owner field : 000000000000000000 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

****** LWP 289.289 (dhcpcd) @ 0xffff9c0012d858c0, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff83483b40 type : sleep/adaptive
initialized : 0xffffffff81b1df61
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff9c0012d858c0 last held: 000000000000000000
last locked : 000000000000000000 unlocked*: 000000000000000000
owner field : 000000000000000000 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

****** LWP 0.11 (iflnkst) @ 0xffff9c000fb4a100, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff83483b40 type : sleep/adaptive
initialized : 0xffffffff81b1df61
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 0
relevant lwp : 0xffff9c000fb4a100 last held: 000000000000000000
last locked : 000000000000000000 unlocked*: 000000000000000000
owner field : 000000000000000000 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

****** LWP 0.5 (softclk/0) @ 0xffff9c000fb34080, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff83483b40 type : sleep/adaptive
initialized : 0xffffffff81b1df61
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff9c000fb34080 last held: 000000000000000000
last locked : 000000000000000000 unlocked*: 000000000000000000
owner field : 000000000000000000 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

****** LWP 0.0 (swapper) @ 0xffffffff83344000, l_stat=2

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff83483b40 type : sleep/adaptive
initialized : 0xffffffff81b1df61
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 0
relevant lwp : 0xffffffff83344000 last held: 000000000000000000
last locked : 000000000000000000 unlocked*: 000000000000000000
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 main)
lock address : 0xffffffff83483a40 type : spin
initialized : 0xffffffff81f755ae
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 1
relevant cpu : 0 last held: 0
relevant lwp : 0xffff9c0013cfa640 last held: 0xffff9c0013cfa640
last locked* : 0xffffffff81b54190 unlocked : 0xffffffff81acfed6
curcpu holds : 3 wanted by: 000000000000000000

* Lock 1 (initialized at kprintf_init)
lock address : 0xffffffff8358eea0 type : spin
initialized : 0xffffffff81bd04e5
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff9c0013cfa640 last held: 0xffff9c0013cfa640
last locked* : 0xffffffff81bd0556 unlocked : 0xffffffff81bd05b4
owner field : 0x0000000000000800 wait/spin: 0/1

PAGE FLAG PQ UOBJECT UANON
0xffff9c0000017180 0041 00000000 0x0 0x0
0xffff9c0000017200 0041 00000000 0x0 0x0
0xffff9c0000017280 0041 00000000 0x0 0x0
0xffff9c0000017300 0041 00000000 0x0 0x0
0xffff9c0000017380 0041 00000000 0x0 0x0
0xffff9c0000017400 0041 00000000 0x0 0x0
0xffff9c0000017480 0041 00000000 0x0 0x0
0xffff9c0000017500 0041 00000000 0x0 0x0
0xffff9c0000017580 0041 00000000 0x0 0x0
0xffff9c0000017600 0041 00000000 0x0 0x0
0xffff9c0000017680 0041 00000000 0x0 0x0
0xffff9c0000017700 0041 00000000 0x0 0x0
0xffff9c0000017780 0041 00000000 0x0 0x0
0xffff9c0000017800 0041 00000000 0x0 0x0
0xffff9c0000017880 0041 00000000 0x0 0x0
0xffff9c0000017900 0041 00000000 0x0 0x0
0xffff9c0000017980 0041 00000000 0x0 0x0
0xffff9c0000017a00 0041 00000000 0x0 0x0
0xffff9c0000017a80 0041 00000000 0x0 0x0
0xffff9c0000017b00 0041 00000000 0x0 0x0
0xffff9c0000017b80 0041 00000000 0x0 0x0
0xffff9c0000017c00 0041 00000000 0x0 0x0
0xffff9c0000017c80 0041 00000000 0x0 0x0
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0xffff9c0000025c80 0001 00000000 0x0 0x0
0xffff9c0000025d00 0001 00000000 0x0 0x0
0xffff9c0000025d80 0001 00000000 0x0 0x0
0xffff9c0000025e00 0001 00000000 0x0 0x0
0xffff9c0000025e80 0001 00000000 0x0 0x0
0xffff9c0000025f00 0001 00000000 0x0 0x0
0xffff9c0000025f80 0001 00000000 0x0 0x0
0xffff9c0000026000 0001 00000000 0x0 0x0
0xffff9c0000026080 0001 00000000 0x0 0x0
0xffff9c0000026100 0001 00000000 0x0 0x0
0xffff9c0000026180 0001 00000000 0x0 0x0
0xffff9c0000026200 0001 00000000 0x0 0x0
0xffff9c0000026280 0001 00000000 0x0 0x0
0xffff9c0000026300 0001 00000000 0x0 0x0
0xffff9c0000026380 0001 00000000 0x0 0x0
0xffff9c0000026400 0001 00000000 0x0 0x0
0xffff9c0000026480 0001 00000000 0x0 0x0
0xffff9c0000026500 0001 00000000 0x0 0x0
0xffff9c0000026580 0001 00000000 0x0 0x0
0xffff9c0000026600 0001 00000000 0x0 0x0
0xffff9c0000026680 0001 00000000 0x0 0x0
0xffff9c0000026700 0001 00000000 0x0 0x0
0xffff9c0000026780 0001 00000000 0x0 0x0
0xffff9c0000026800 0001 00000000 0x0 0x0
0xffff9c0000026880 0001 00000000 0x0 0x0
0xffff9c0000026900 0001 00000000 0x0 0x0
0xffff9c0000026980 0001 00000000 0x0 0x0
0xffff9c0000026a00 0001 00000000 0x0 0x0
0xffff9c0000026a80 0001 00000000 0x0 0x0
0xffff9c0000026b00 0001 00000000 0x0 0x0
0xffff9c0000026b80 0001 00000000 0x0 0x0
0xffff9c0000026c00 0001 00000000 0x0 0x0
0xffff9c0000026c80 0001 00000000 0x0 0x0
0xffff9c0000026d00 0001 00000000 0x0 0x0
0xffff9c0000026d80 0001 00000000 0x0 0x0
0xffff9c0000026e00 0001 00000000 0x0 0x0
0xffff9c0000026e80 0001 00000000 0x0 0x0
0xffff9c0000026f00 0001 00000000 0x0 0x0
0xffff9c0000026f80 0001 00000000 0x0 0x0
0xffff9c0000027000 0001 00000000 0x0 0x0
0xffff9c0000027080 0001 00000000 0x0 0x0
0xffff9c0000027100 0001 00000000 0x0 0x0
0xffff9c0000027180 0001 00000000 0x0 0x0
0xffff9c0000027200 0001 00000000 0x0 0x0
0xffff9c0000027280 0001 00000000 0x0 0x0
0xffff9c0000027300 0001 00000000 0x0 0x0
0xffff9c0000027380 0001 00000000 0x0 0x0
0xffff9c0000027400 0001 00000000 0x0 0x0
0xffff9c0000027480 0001 00000000 0x0 0x0
0xffff9c0000027500 0001 00000000 0x0 0x0
0xffff9c0000027580 0001 00000000 0x0 0x0
0xffff9c0000027600 0001 00000000 0x0 0x0
0xffff9c0000027680 0001 00000000 0x0 0x0
0xffff9c0000027700 0001 00000000 0x0 0x0
0xffff9c0000027780 0001 00000000 0x0 0x0
0xffff9c0000027800 0001 00000000 0x0 0x0
0xffff9c0000027880 0001 00000000 0x0 0x0
0xffff9c0000027900 0001 00000000 0x0 0x0
0xffff9c0000027980 0001 00000000 0x0 0x0
0xffff9c0000027a00 0001 00000000 0x0 0x0
0xffff9c0000027a80 0001 00000000 0x0 0x0
0xffff9c0000027b00 0001 00000000 0x0 0x0
0xffff9c0000027b80 0001 00000000 0x0 0x0
0xffff9c0000027c00 0001 00000000 0x0 0x0
0xffff9c0000027c80 0001 00000000 0x0 0x0
0xffff9c0000027d00 0001 00000000 0x0 0x0
0xffff9c0000027d80 0001 00000000 0x0 0x0
0xffff9c0000027e00 0001 00000000 0x0 0x0
0xffff9c0000027e80 0001 00000000 0x0 0x0
0xffff9c0000027f00 0001 00000000 0x0 0x0
0xffff9c0000027f80 0001 00000000 0x0 0x0
0xffff9c0000028000 0001 00000000 0x0 0x0
0xffff9c0000028080 0001 00000000 0x0 0x0
0xffff9c0000028100 0001 00000000 0x0 0x0
0xffff9c0000028180 0001 00000000 0x0 0x0
0xffff9c0000028200 0001 00000000 0x0 0x0
0xffff9c0000028280 0001 00000000 0x0 0x0
0xffff9c0000028300 0001 00000000 0x0 0x0
0xffff9c0000028380 0001 00000000 0x0 0x0
0xffff9c0000028400 0001 00000000 0x0 0x0
0xffff9c0000028480 0001 00000000 0x0 0x0
0xffff9c0000028500 0001 00000000 0x0 0x0
0xffff9c0000028580 0001 00000000 0x0 0x0
0xffff9c0000028600 0001 00000000 0x0 0x0
0xffff9c0000028680 0001 00000000 0x0 0x0
0xffff9c0000028700 0001 00000000 0x0 0x0
0xffff9c0000028780 0001 00000000 0x0 0x0
0xffff9c0000028800 0001 00000000 0x0 0x0
0xffff9c0000028880 0001 00000000 0x0 0x0
0xffff9c0000028900 0001 00000000 0x0 0x0
0xffff9c0000028980 0001 00000000 0x0 0x0
0xffff9c0000028a00 0001 00000000 0x0 0x0
0xffff9c0000028a80 0001 00000000 0x0 0x0
0xffff9c0000028b00 0001 00000000 0x0 0x0
0xffff9c0000028b80 0001 00000000 0x0 0x0
0xffff9c0000028c00 0001 00000000 0x0 0x0
0xffff9c0000028c80 0001 00000000 0x0 0x0
0xffff9c0000028d00 0001 00000000 0x0 0x0
0xffff9c0000028d80 0001 00000000 0x0 0x0
0xffff9c0000028e00 0001 00000000 0x0 0x0
0xffff9c0000028e80 0001 00000000 0x0 0x0
0xffff9c0000028f00 0001 00000000 0x0 0x0
0xffff9c0000028f80 0001 00000000 0x0 0x0
0xffff9c0000029000 0001 00000000 0x0 0x0
0xffff9c0000029080 0001 00000000 0x0 0x0
0xffff9c0000029100 0001 00000000 0x0 0x0
0xffff9c0000029180 0001 00000000 0x0 0x0
0xffff9c0000029200 0001 00000000 0x0 0x0
0xffff9c0000029280 0001 00000000 0x0 0x0
0xffff9c0000029300 0001 00000000 0x0 0x0
0xffff9c0000029380 0001 00000000 0x0 0x0
0xffff9c0000029400 0001 00000000 0x0 0x0
0xffff9c0000029480 0001 00000000 0x0 0x0
0xffff9c0000029500 0001 00000000 0x0 0x0
0xffff9c0000029580 0001 00000000 0x0 0x0
0xffff9c0000029600 0001 00000000 0x0 0x0
0xffff9c0000029680 0001 00000000 0x0 0x0
0xffff9c0000029700 0001 00000000 0x0 0x0
0xffff9c0000029780 0001 00000000 0x0 0x0
0xffff9c0000029800 0001 00000000 0x0 0x0
0xffff9c0000029880 0001 00000000 0x0 0x0
0xffff9c0000029900 0001 00000000 0x0 0x0
0xffff9c0000029980 0001 00000000 0x0 0x0
0xffff9c0000029a00 0001 00000000 0x0 0x0
0xffff9c0000029a80 0001 00000000 0x0 0x0
0xffff9c0000029b00 0001 00000000 0x0 0x0
0xffff9c0000029b80 0001 00000000 0x0 0x0
0xffff9c0000029c00 0001 00000000 0x0 0x0
0xffff9c0000029c80 0001 00000000 0x0 0x0
0xffff9c0000029d00 0001 00000000 0x0 0x0
0xffff9c0000029d80 0001 00000000 0x0 0x0
0xffff9c0000029e00 0001 00000000 0x0 0x0
0xffff9c0000029e80

---
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.
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches

syzbot

unread,

Aug 24, 2022, 6:17:11 AM8/24/22

to Taylor R Campbell, rias...@netbsd.org, syzkaller-...@googlegroups.com

> #syz test: https://github.com/NetBSD/src

"https://syzkaller.appspot.com/bug?id=db40a795a0b078f9b3b9fa0d3b7a9addcd2534de" does not look like a valid git branch or commit.

>
> https://syzkaller.appspot.com/bug?id=db40a795a0b078f9b3b9fa0d3b7a9addcd2534de

syzbot

unread,

Aug 24, 2022, 8:39:16 AM8/24/22

to rias...@netbsd.org, syzkaller-...@googlegroups.com

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
page fault in config_detach_commit

[ 53.1391590] fatal page fault in supervisor mode
[ 53.1391590] trap type 6 code 0 rip 0xffffffff852fdcb1 cs 0x8 rflags 0x10246 cr2 0x1a4 ilevel 0 rsp 0xffffea00c7bbd4a0
[ 53.1540002] curlwp 0xffffea0013615680 pid 1256.1256 lowest kstack 0xffffea00c7bb62c0
kernel: page fault trap, code=0
Stopped in pid 1256.1256 (syz-executor.4) at netbsd:config_detach_commit+0x141: movslq 1a4(%r12),%rax
?
config_detach_commit() at netbsd:config_detach_commit+0x141 sys/kern/subr_autoconf.c:2185
vdevgone() at netbsd:vdevgone+0x20c
audiodetach() at netbsd:audiodetach+0x22d sys/dev/audio/audio.c:1370
config_detach() at netbsd:config_detach+0xf9e sys/kern/subr_autoconf.c:2045
config_detach_children() at netbsd:config_detach_children+0x191 sys/kern/subr_autoconf.c:2206
pad_detach() at netbsd:pad_detach+0x22d sys/dev/pad/pad.c:250
config_detach() at netbsd:config_detach+0xf9e sys/kern/subr_autoconf.c:2045
fops_pad_close() at netbsd:fops_pad_close+0x160 pad_close sys/dev/pad/pad.c:418 [inline]
fops_pad_close() at netbsd:fops_pad_close+0x160 sys/dev/pad/pad.c:428
closef() at netbsd:closef+0x4e5 sys/kern/kern_descrip.c:832
fd_free() at netbsd:fd_free+0xc87
exit1() at netbsd:exit1+0xaab sys/kern/kern_exit.c:301
sys_exit() at netbsd:sys_exit+0x1d6
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 1) ---
netbsd:syscall+0x60c:
Panic string: (null)

PID LID S CPU FLAGS STRUCT LWP * NAME WAIT

1116 1353 3 1 0 ffffea00138b6700 syz-executor.5 fstchg
1116 1119 3 0 180 ffffea00138b62c0 syz-executor.5 parked
1116 1116 2 1 10040140 ffffea0013615ac0 syz-executor.5
1256 >1256 7 0 10040000 ffffea0013615680 syz-executor.4
576 1131 3 1 140000 ffffea00137396c0 syz-executor.1 fstchg
576 576 2 1 10000040 ffffea00135f7a80 syz-executor.1
1349 >1349 7 1 10000040 ffffea00135f7200 syz-executor.2
1319 1351 3 1 140000 ffffea0013739b00 syz-executor.3 fstchg
1319 1319 2 0 10040040 ffffea0013580a40 syz-executor.3
1197 1197 2 1 140 ffffea001345c5c0 syz-executor.1
1245 1245 3 0 10000180 ffffea001345c180 syz-executor.0 fstcnt
1321 1321 2 0 140 ffffea0013449580 syz-executor.2
1211 1211 2 1 140 ffffea0013449140 syz-executor.5
324 324 2 0 140 ffffea0013435980 syz-executor.4
1102 1102 2 1 140 ffffea0013435100 syz-executor.3
331 331 2 0 140 ffffea0013378940 syz-executor.0
1201 1323 3 0 1c0 ffffea00135f7640 syz-execprog parked
1201 1208 3 0 180 ffffea00135801c0 syz-execprog parked
1201 1279 3 1 180 ffffea001345ca00 syz-execprog wait
1201 1214 3 0 40180 ffffea00134499c0 syz-execprog wait
1201 335 3 0 180 ffffea0013435540 syz-execprog wait
1201 330 3 1 180 ffffea0013378500 syz-execprog kqueue
1201 1203 3 0 180 ffffea00133780c0 syz-execprog wait
1201 1207 3 1 180 ffffea00122cab00 syz-execprog parked
1201 1205 3 1 1c0 ffffea00122ca6c0 syz-execprog wait
1201 1198 3 1 180 ffffea00122ca280 syz-execprog wait
1201 1237 3 0 1c0 ffffea0012b83900 syz-execprog parked
1201 1383 3 1 180 ffffea0012b834c0 syz-execprog parked
1201 1201 3 0 180 ffffea0012b83080 syz-execprog parked
1385 1385 3 0 180 ffffea00125ef340 sshd select
1184 1184 3 0 180 ffffea0012b5d8c0 getty nanoslp
1081 1081 3 0 180 ffffea00121c0ac0 getty nanoslp
1071 1071 3 0 180 ffffea00121c0680 getty nanoslp
1074 1074 3 0 1c0 ffffea00121a4a40 getty ttyraw
950 950 3 1 180 ffffea0012b5d480 sshd select
957 957 3 0 180 ffffea0012b5d040 powerd kqueue
692 692 2 0 100 ffffea00124df740 syslogd
547 547 3 1 180 ffffea00125efbc0 dhcpcd poll
742 742 3 1 180 ffffea00124372c0 dhcpcd poll
465 465 3 1 180 ffffea0012437b40 dhcpcd poll
594 594 3 0 180 ffffea00125ef780 dhcpcd poll
292 292 3 0 180 ffffea00124dfb80 dhcpcd poll
290 290 3 1 180 ffffea0012437700 dhcpcd poll
289 289 3 1 180 ffffea00124df300 dhcpcd poll
1 1 3 0 180 ffffea0011eca100 init wait
0 734 3 0 200 ffffea00121bd200 physiod physiod
0 195 3 0 200 ffffea00121c0240 pooldrain pooldrain
0 194 3 0 200 ffffea00121bda80 ioflush syncer
0 193 3 1 200 ffffea00121bd640 pgdaemon pgdaemon
0 172 3 0 200 ffffea00121a4600 usb7 usbevt
0 170 3 0 200 ffffea00121a41c0 usb6 usbevt
0 168 3 0 200 ffffea001210ca00 usb5 usbevt
0 166 3 0 200 ffffea001210c5c0 usb4 usbevt
0 165 3 0 200 ffffea001210c180 usb3 usbevt
0 31 3 0 200 ffffea00120759c0 usb2 usbevt
0 63 3 0 200 ffffea0012075580 usb1 usbevt
0 126 3 1 200 ffffea0012075140 usb0 usbevt
0 125 3 0 200 ffffea0011eca980 usbtask-dr usbtsk
0 124 3 0 200 ffffea00103f5b00 usbtask-hc usbtsk
0 123 3 1 200 ffffea0011eca540 npfgc0 npfgcw
0 122 3 0 200 ffffea0011ebb940 rt_free rt_free
0 121 3 0 200 ffffea0011ebb500 unpgc unpgc
0 120 3 0 200 ffffea0011ebb0c0 key_timehandler key_timehandler
0 119 3 1 200 ffffea0011eb6900 icmp6_wqinput/1 icmp6_wqinput
0 118 3 0 200 ffffea0011eb64c0 icmp6_wqinput/0 icmp6_wqinput
0 117 3 0 200 ffffea0011eb6080 nd6_timer nd6_timer
0 116 3 1 200 ffffea0011e9b8c0 carp6_wqinput/1 carp6_wqinput
0 115 3 0 200 ffffea0011e9b480 carp6_wqinput/0 carp6_wqinput
0 114 3 1 200 ffffea0011cddb80 carp_wqinput/1 carp_wqinput
0 113 3 0 200 ffffea0011cdd740 carp_wqinput/0 carp_wqinput
0 112 3 1 200 ffffea0011ce0bc0 icmp_wqinput/1 icmp_wqinput
0 111 3 0 200 ffffea0011ce0780 icmp_wqinput/0 icmp_wqinput
0 110 3 0 200 ffffea0011e9b040 rt_timer rt_timer
0 109 3 1 200 ffffea0011ce0340 vmem_rehash vmem_rehash
0 100 3 0 200 ffffea0011cdd300 entbutler entropy
0 99 3 1 200 ffffea00117e0b40 viomb balloon
0 98 3 1 200 ffffea00117e0700 vioif0_txrx/1 vioif0_txrx
0 97 3 0 200 ffffea00117e02c0 vioif0_txrx/0 vioif0_txrx
0 30 3 0 200 ffffea00103f56c0 scsibus0 sccomp
0 29 3 0 200 ffffea00103f5280 pms0 pmsreset
0 28 3 1 200 ffffea00103daac0 xcall/1 xcall
0 27 1 1 200 ffffea00103da680 softser/1
0 26 1 1 200 ffffea00103da240 softclk/1
0 25 1 1 200 ffffea00103d8a80 softbio/1
0 24 1 1 200 ffffea00103d8640 softnet/1
0 23 1 1 201 ffffea00103d8200 idle/1
0 22 3 0 200 ffffea000f1f3a40 lnxsyswq lnxsyswq
0 21 3 0 200 ffffea000f1f3600 lnxubdwq lnxubdwq
0 20 3 0 200 ffffea000f1f31c0 lnxpwrwq lnxpwrwq
0 19 3 0 200 ffffea000f1f1a00 lnxlngwq lnxlngwq
0 18 3 0 200 ffffea000f1f15c0 lnxhipwq lnxhipwq
0 17 3 0 200 ffffea000f1f1180 lnxrcugc lnxrcugc
0 16 3 0 200 ffffea000f1ec9c0 sysmon smtaskq
0 15 3 0 200 ffffea000f1ec580 pmfsuspend pmfsuspend
0 14 3 0 200 ffffea000f1ec140 pmfevent pmfevent
0 13 3 0 200 ffffea000f1e8980 sopendfree sopendfr
0 12 3 0 200 ffffea000f1e8540 ifwdog ifwdog
0 11 3 1 200 ffffea000f1e8100 iflnkst iflnkst
0 10 3 1 200 ffffea000f1df940 nfssilly nfssilly
0 9 3 0 200 ffffea000f1df500 vdrain vdrain
0 8 3 1 200 ffffea000f1df0c0 modunload mod_unld
0 7 3 0 200 ffffea000ebdb900 xcall/0 xcall
0 6 1 0 200 ffffea000ebdb4c0 softser/0
0 5 1 0 200 ffffea000ebdb080 softclk/0
0 4 1 0 200 ffffea000ebd98c0 softbio/0
0 3 1 0 200 ffffea000ebd9480 softnet/0
0 2 1 0 201 ffffea000ebd9040 idle/0
0 0 3 1 200 ffffffff86868f00 swapper uvm
[Locks tracked through LWPs]

****** LWP 1256.1256 (syz-executor.4) @ 0xffffea0013615680, l_stat=7

*** Locks held:

* Lock 0 (initialized at fork1)

lock address : 0xffffea0013583e90 type : sleep/adaptive
initialized : 0xffffffff851484a8

shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0

relevant lwp : 0xffffea0013615680 last held: 0xffffea0013615680
last locked* : 0xffffffff85139d86 unlocked : 000000000000000000
owner/count : 0xffffea0013615680 flags : 0x0000000000000004

Turnstile: no active turnstile for this lock.

* Lock 1 (initialized at config_init)

lock address : 0xffffffff86875660 type : sleep/adaptive
initialized : 0xffffffff852e0209

shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0

relevant lwp : 0xffffea0013615680 last held: 0xffffea0013615680
last locked* : 0xffffffff852fdbb1 unlocked : 0xffffffff852f0843
owner field : 0xffffea0013615680 wait/spin: 0/0

Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 1349.1349 (syz-executor.2) @ 0xffffea00135f7200, l_stat=7

*** Locks held:

* Lock 0 (initialized at fork1)

lock address : 0xffffea0013583810 type : sleep/adaptive
initialized : 0xffffffff851484a8

shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 1

relevant lwp : 0xffffea00135f7200 last held: 0xffffea00135f7200
last locked* : 0xffffffff85139d86 unlocked : 000000000000000000
owner/count : 0xffffea00135f7200 flags : 0x0000000000000004

Turnstile: no active turnstile for this lock.

*** Locks wanted:

* Lock 0 (initialized at main)

lock address : 0xffffffff868f7d80 type : spin
initialized : 0xffffffff8508dee4

shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 1
relevant cpu : 1 last held: 0

relevant lwp : 0xffffea00135f7200 last held: 0xffffea0013615680
last locked* : 0xffffffff8525140b unlocked : 0xffffffff852f84b7

curcpu holds : 3 wanted by: 000000000000000000

****** LWP 1245.1245 (syz-executor.0) @ 0xffffea001345c180, l_stat=3

*** Locks held:

* Lock 0 (initialized at fork1)

lock address : 0xffffea0012b88b10 type : sleep/adaptive
initialized : 0xffffffff851484a8

shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0

relevant cpu : 0 last held: 1
relevant lwp : 0xffffea001345c180 last held: 0xffffea001345c180
last locked* : 0xffffffff85139d86 unlocked : 000000000000000000
owner/count : 0xffffea001345c180 flags : 0x0000000000000004

Turnstile: no active turnstile for this lock.

* Lock 1 (initialized at fstrans_init)

lock address : 0xffffffff86901f40 type : sleep/adaptive
initialized : 0xffffffff8567d063

shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0

relevant lwp : 0xffffea001345c180 last held: 0xffffea001345c180
last locked* : 0xffffffff85684a73 unlocked : 0xffffffff8569e3ba
owner field : 0xffffea001345c180 wait/spin: 0/0

Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 692.692 (syslogd) @ 0xffffea00124df740, l_stat=2

*** Locks held:

* Lock 0 (initialized at vcache_alloc)
lock address : 0xffffea001324e440 type : sleep/adaptive
initialized : 0xffffffff856a2c66

shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0

relevant lwp : 0xffffea00124df740 last held: 0xffffea00124df740
last locked* : 0xffffffff85730f06 unlocked : 0xffffffff857312b5
owner/count : 0xffffea00124df740 flags : 0x0000000000000004

Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 742.742 (dhcpcd) @ 0xffffea00124372c0, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)