page fault in raidioctl

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syzbot

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Aug 27, 2022, 7:50:27 AM8/27/22
to syzkaller-...@googlegroups.com
Hello,

syzbot found the following issue on:

HEAD commit: 45a5153ad81e adding initial support for ECDSA (19) to netp..
git tree: netbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=15e42b0b080000
kernel config: https://syzkaller.appspot.com/x/.config?x=1420f906d33d9f1f
dashboard link: https://syzkaller.appspot.com/bug?extid=1c20fcbe34d72cd7fbda
compiler: g++ (Debian 10.2.1-6) 10.2.1 20210110

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/a6e1cd312fa3/disk-45a5153a.raw.xz
netbsd.gdb: https://storage.googleapis.com/syzbot-assets/050eabf373e0/netbsd-45a5153a.gdb.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1c20fc...@syzkaller.appspotmail.com

[ 241.1729894] fatal page fault in supervisor mode
[ 241.1855677] trap type 6 code 0x2 rip 0xffffffff82d109cc cs 0x8 rflags 0x10283 cr2 0xffff90801109e0e0 ilevel 0 rsp 0xffff90825148fb40
[ 241.1990566] curlwp 0xffff8c4b65c984c0 pid 11664.11514 lowest kstack 0xffff90825148b2c0
kernel: page fault trap, code=0
Stopped in pid 11664.11514 (syz-executor.4) at netbsd:raidioctl+0x3236:panic: UBSan: Undefined Behavior in /syzkaller/managers/ci2-netbsd-kubsan/kernel/sys/arch/x86/x86/db_memrw.c:108:20, load of misaligned address 0xffffffff82d109ce for type 'int' which requires 4 byte alignment

[ 241.2069191] cpu0: Begin traceback...
[ 241.2069191] vpanic() at netbsd:vpanic+0x2f2 sys/kern/subr_prf.c:293
[ 241.2069191] Report() at netbsd:Report+0x3b sys/../common/lib/libc/misc/ubsan.c:1352
[ 241.2069191] HandleTypeMismatch() at netbsd:HandleTypeMismatch+0xfc sys/../common/lib/libc/misc/ubsan.c:432
[ 241.2069191] db_read_bytes() at netbsd:db_read_bytes+0x27d sys/arch/x86/x86/db_memrw.c:108
[ 241.2069191] db_get_value() at netbsd:db_get_value+0x3e sys/ddb/db_access.c:70
[ 241.2069191] db_read_address() at netbsd:db_read_address+0x2e8 sys/arch/amd64/amd64/db_disasm.c:1047
[ 241.2069191] db_disasm() at netbsd:db_disasm+0x5d0 sys/arch/amd64/amd64/db_disasm.c:1278
[ 241.2069191] db_trap() at netbsd:db_trap+0x25c sys/ddb/db_trap.c:91
[ 241.2069191] kdb_trap() at netbsd:kdb_trap+0x1aa sys/arch/amd64/amd64/db_interface.c:251
[ 241.2069191] trap() at netbsd:trap+0x5b2 sys/arch/amd64/amd64/trap.c:315
[ 241.2069191] --- trap (number 6) ---
[ 241.2069191] raidioctl() at netbsd:raidioctl+0x3236 sys/dev/raidframe/rf_netbsdkintf.c:1746
[ 241.2069191] cdev_ioctl() at netbsd:cdev_ioctl+0x18d sys/kern/subr_devsw.c:1248
[ 241.2069191] spec_ioctl() at netbsd:spec_ioctl+0xf2 sys/miscfs/specfs/spec_vnops.c:1320
[ 241.2069191] VOP_IOCTL() at netbsd:VOP_IOCTL+0x149 sys/kern/vnode_if.c:934
[ 241.2069191] vn_ioctl() at netbsd:vn_ioctl+0x195 sys/kern/vfs_vnops.c:868
[ 241.2069191] sys_ioctl() at netbsd:sys_ioctl+0xd88 sys/kern/sys_generic.c:675
[ 241.2069191] sys___syscall() at netbsd:sys___syscall+0x1e4 sy_call sys/sys/syscallvar.h:65 [inline]
[ 241.2069191] sys___syscall() at netbsd:sys___syscall+0x1e4 sys/kern/sys_syscall.c:90
[ 241.2069191] syscall() at netbsd:syscall+0x2da sy_call sys/sys/syscallvar.h:65 [inline]
[ 241.2069191] syscall() at netbsd:syscall+0x2da sy_invoke sys/sys/syscallvar.h:94 [inline]
[ 241.2069191] syscall() at netbsd:syscall+0x2da sys/arch/x86/x86/syscall.c:138
[ 241.2069191] --- syscall (number 54 via SYS_syscall) ---
[ 241.2069191] netbsd:syscall+0x2da:
[ 241.2069191] cpu0: End traceback...
[ 241.2069191] fatal breakpoint trap in supervisor mode
[ 241.2069191] trap type 1 code 0 rip 0xffffffff80221ab5 cs 0x8 rflags 0x246 cr2 0xffff90801109e0e0 ilevel 0x8 rsp 0xffff90825148eff0
[ 241.2069191] curlwp 0xffff8c4b65c984c0 pid 11664.11514 lowest kstack 0xffff90825148b2c0
Stopped in pid 11664.11514 (syz-executor.4) at netbsd:breakpoint+0x5: leave
?
breakpoint() at netbsd:breakpoint+0x5
db_panic() at netbsd:db_panic+0xec sys/ddb/db_panic.c:69
vpanic() at netbsd:vpanic+0x2f2 sys/kern/subr_prf.c:293
Report() at netbsd:Report+0x3b sys/../common/lib/libc/misc/ubsan.c:1352
HandleTypeMismatch() at netbsd:HandleTypeMismatch+0xfc sys/../common/lib/libc/misc/ubsan.c:432
db_read_bytes() at netbsd:db_read_bytes+0x27d sys/arch/x86/x86/db_memrw.c:108
db_get_value() at netbsd:db_get_value+0x3e sys/ddb/db_access.c:70
db_read_address() at netbsd:db_read_address+0x2e8 sys/arch/amd64/amd64/db_disasm.c:1047
db_disasm() at netbsd:db_disasm+0x5d0 sys/arch/amd64/amd64/db_disasm.c:1278
db_trap() at netbsd:db_trap+0x25c sys/ddb/db_trap.c:91
kdb_trap() at netbsd:kdb_trap+0x1aa sys/arch/amd64/amd64/db_interface.c:251
trap() at netbsd:trap+0x5b2 sys/arch/amd64/amd64/trap.c:315
--- trap (number 6) ---
raidioctl() at netbsd:raidioctl+0x3236 sys/dev/raidframe/rf_netbsdkintf.c:1746
cdev_ioctl() at netbsd:cdev_ioctl+0x18d sys/kern/subr_devsw.c:1248
spec_ioctl() at netbsd:spec_ioctl+0xf2 sys/miscfs/specfs/spec_vnops.c:1320
VOP_IOCTL() at netbsd:VOP_IOCTL+0x149 sys/kern/vnode_if.c:934
vn_ioctl() at netbsd:vn_ioctl+0x195 sys/kern/vfs_vnops.c:868
sys_ioctl() at netbsd:sys_ioctl+0xd88 sys/kern/sys_generic.c:675
sys___syscall() at netbsd:sys___syscall+0x1e4 sy_call sys/sys/syscallvar.h:65 [inline]
sys___syscall() at netbsd:sys___syscall+0x1e4 sys/kern/sys_syscall.c:90
syscall() at netbsd:syscall+0x2da sy_call sys/sys/syscallvar.h:65 [inline]
syscall() at netbsd:syscall+0x2da sy_invoke sys/sys/syscallvar.h:94 [inline]
syscall() at netbsd:syscall+0x2da sys/arch/x86/x86/syscall.c:138
--- syscall (number 54 via SYS_syscall) ---
netbsd:syscall+0x2da:
Panic string: UBSan: Undefined Behavior in /syzkaller/managers/ci2-netbsd-kubsan/kernel/sys/arch/x86/x86/db_memrw.c:108:20, load of misaligned address 0xffffffff82d109ce for type 'int' which requires 4 byte alignment

PID LID S CPU FLAGS STRUCT LWP * NAME WAIT
11664>11514 7 0 0 ffff8c4b65c984c0 syz-executor.4
11664 11511 3 0 180 ffff8c4b5af5e640 syz-executor.4 parked
11664 11664 2 0 10000000 ffff8c4b65ed7ac0 syz-executor.4
15666 12220 2 0 0 ffff8c4b62ce9a80 syz-executor.5
15666 16938 3 0 180 ffff8c4b65ed7680 syz-executor.5 parked
15666 15666 2 0 10000000 ffff8c4b62ce9200 syz-executor.5
16687 16821 4 0 1000000 ffff8c4b65280040 syz-executor.2
16687 16698 4 0 1000000 ffff8c4b64522ac0 syz-executor.2
16687 10992 4 1 1000180 ffff8c4b68eb7280 syz-executor.2 parked
16687 11236 4 1 1000180 ffff8c4b69a28740 syz-executor.2 parked
16687 16687 4 1 11000000 ffff8c4b64b772c0 syz-executor.2
16697>16697 7 1 40 ffff8c4b5d45e5c0 syz-executor.0
7135 7135 2 1 140 ffff8c4b6511a140 syz-executor.4
8018 8018 2 0 40 ffff8c4b65043bc0 syz-executor.2
1700 1700 2 0 140 ffff8c4b6511a580 syz-executor.1
5195 5195 3 0 180 ffff8c4b64522240 syz-executor.1 parked
6443 6443 3 0 180 ffff8c4b6481eb00 syz-executor.1 parked
1368 1368 3 1 180 ffff8c4b64b77700 syz-executor.4 parked
447 447 3 0 180 ffff8c4b60178a40 syz-executor.4 parked
1385 1385 2 0 140 ffff8c4b5d45ea00 syz-executor.5
448 448 2 0 40 ffff8c4b5c455580 syz-executor.3
823 648 3 0 180 ffff8c4b6561f5c0 syz-fuzzer wait
823 1245 3 1 180 ffff8c4b60178600 syz-fuzzer parked
823 1238 3 0 1c0 ffff8c4b5d45e180 syz-fuzzer wait
823 828 3 1 180 ffff8c4b5c4559c0 syz-fuzzer kqueue
823 1003 3 1 1c0 ffff8c4b5c455140 syz-fuzzer wait
823 1237 3 1 180 ffff8c4b59aa5540 syz-fuzzer wait
823 990 3 1 180 ffff8c4b57cae900 syz-fuzzer wait
823 1221 3 1 1c0 ffff8c4b57c3d500 syz-fuzzer wait
823 1184 3 0 180 ffff8c4b57c3d940 syz-fuzzer parked
823 1228 3 1 180 ffff8c4b56d8d6c0 syz-fuzzer parked
823 1078 3 0 180 ffff8c4b56d8d280 syz-fuzzer parked
823 814 3 1 1c0 ffff8c4b56a84680 syz-fuzzer parked
823 1229 3 0 180 ffff8c4b559cfa40 syz-fuzzer parked
823 823 3 0 180 ffff8c4b5755abc0 syz-fuzzer parked
1224 1224 3 1 180 ffff8c4b56a84ac0 sshd select
1085 1085 3 0 180 ffff8c4b57cae4c0 getty nanoslp
1223 1223 3 0 180 ffff8c4b57c3d0c0 getty nanoslp
1083 1083 3 0 180 ffff8c4b57066700 getty nanoslp
976 976 3 0 1c0 ffff8c4b57cae080 getty ttyraw
1102 1102 3 1 180 ffff8c4b5755a780 sshd select
1023 1023 3 0 180 ffff8c4b57a8f480 powerd kqueue
702 702 3 0 180 ffff8c4b57066b40 syslogd kqueue
741 741 3 1 180 ffff8c4b5755a340 dhcpcd poll
547 547 3 0 180 ffff8c4b57a8f8c0 dhcpcd poll
742 742 3 1 180 ffff8c4b57245300 dhcpcd poll
595 595 3 1 180 ffff8c4b57245740 dhcpcd poll
292 292 3 0 180 ffff8c4b570662c0 dhcpcd poll
290 290 3 1 180 ffff8c4b56d8db00 dhcpcd poll
289 289 3 0 180 ffff8c4b57245b80 dhcpcd poll
1 1 3 0 180 ffff8c4b4e84b980 init wait
0 12360 5 1 200 ffff8c4b65594600 (zombie)
0 12108 3 0 200 ffff8c4b6481e6c0 ktrace ktrwait
0 7989 3 1 200 ffff8c4b6561fa00 ktrace ktrwait
0 1317 3 1 200 ffff8c4b65043340 acctwatch actwat
0 876 3 0 200 ffff8c4b56a77200 physiod physiod
0 195 3 0 200 ffff8c4b56a84240 pooldrain pooldrain
0 194 3 0 200 ffff8c4b56a77a80 ioflush syncer
0 193 3 1 200 ffff8c4b56a77640 pgdaemon pgdaemon
0 169 3 1 200 ffff8c4b559cf600 usb7 usbevt
0 168 3 1 200 ffff8c4b559cf1c0 usb6 usbevt
0 167 3 1 200 ffff8c4b52952a00 usb5 usbevt
0 166 3 0 200 ffff8c4b529525c0 usb4 usbevt
0 165 3 0 200 ffff8c4b52952180 usb3 usbevt
0 31 3 0 200 ffff8c4b4e8959c0 usb2 usbevt
0 63 3 1 200 ffff8c4b4e895580 usb1 usbevt
0 126 3 1 200 ffff8c4b4e6e0740 usb0 usbevt
0 125 3 1 200 ffff8c4b4e6e0b80 usbtask-dr usbtsk
0 124 3 1 200 ffff8c4b4cca9b00 usbtask-hc usbtsk
0 123 3 0 200 ffff8c4b4e895140 npfgc0 npfgcw
0 122 3 1 200 ffff8c4b4e84b540 rt_free rt_free
0 121 3 1 200 ffff8c4b4e84b100 unpgc unpgc
0 120 3 0 200 ffff8c4b4e83e940 key_timehandler key_timehandler
0 119 3 1 200 ffff8c4b4e83e500 icmp6_wqinput/1 icmp6_wqinput
0 118 3 0 200 ffff8c4b4e83e0c0 icmp6_wqinput/0 icmp6_wqinput
0 117 3 0 200 ffff8c4b4e839900 nd6_timer nd6_timer
0 116 3 1 200 ffff8c4b4e8394c0 carp6_wqinput/1 carp6_wqinput
0 115 3 0 200 ffff8c4b4e839080 carp6_wqinput/0 carp6_wqinput
0 114 3 1 200 ffff8c4b4e8148c0 carp_wqinput/1 carp_wqinput
0 113 3 0 200 ffff8c4b4e814480 carp_wqinput/0 carp_wqinput
0 112 3 1 200 ffff8c4b4e814040 icmp_wqinput/1 icmp_wqinput
0 111 3 0 200 ffff8c4b4e7d7bc0 icmp_wqinput/0 icmp_wqinput
0 110 3 1 200 ffff8c4b4e7d7340 rt_timer rt_timer
0 109 3 0 200 ffff8c4b4e7d7780 vmem_rehash vmem_rehash
0 100 3 0 200 ffff8c4b4e6e0300 entbutler entropy
0 99 3 1 200 ffff8c4b4e148b40 viomb balloon
0 98 3 1 200 ffff8c4b4e148700 vioif0_txrx/1 vioif0_txrx
0 97 3 0 200 ffff8c4b4e1482c0 vioif0_txrx/0 vioif0_txrx
0 30 3 1 200 ffff8c4b4cca96c0 scsibus0 sccomp
0 29 3 0 200 ffff8c4b4cca9280 pms0 pmsreset
0 28 3 1 200 ffff8c4b4cbacac0 xcall/1 xcall
0 27 1 1 200 ffff8c4b4cbac680 softser/1
0 26 1 1 200 ffff8c4b4cbac240 softclk/1
0 25 1 1 200 ffff8c4b4cb87a80 softbio/1
0 24 1 1 200 ffff8c4b4cb87640 softnet/1
0 23 1 1 201 ffff8c4b4cb87200 idle/1
0 22 3 1 200 ffff8c4c7af2da40 lnxsyswq lnxsyswq
0 21 3 1 200 ffff8c4c7af2d600 lnxubdwq lnxubdwq
0 20 3 1 200 ffff8c4c7af2d1c0 lnxpwrwq lnxpwrwq
0 19 3 1 200 ffff8c4c7af34a00 lnxlngwq lnxlngwq
0 18 3 1 200 ffff8c4c7af345c0 lnxhipwq lnxhipwq
0 17 3 1 200 ffff8c4c7af34180 lnxrcugc lnxrcugc
0 16 3 0 200 ffff8c4c7af539c0 sysmon smtaskq
0 15 3 1 200 ffff8c4c7af53580 pmfsuspend pmfsuspend
0 14 3 0 200 ffff8c4c7af53140 pmfevent pmfevent
0 13 3 1 200 ffff8c4c7af5e980 sopendfree sopendfr
0 12 3 0 200 ffff8c4c7af5e540 ifwdog ifwdog
0 11 3 0 200 ffff8c4c7af5e100 iflnkst iflnkst
0 10 3 1 200 ffff8c4c7bf95940 nfssilly nfssilly
0 9 3 0 200 ffff8c4c7bf95500 vdrain vdrain
0 8 3 1 200 ffff8c4c7bf950c0 modunload mod_unld
0 7 3 0 200 ffff8c4c7bfba900 xcall/0 xcall
0 6 1 0 200 ffff8c4c7bfba4c0 softser/0
0 5 1 0 200 ffff8c4c7bfba080 softclk/0
0 4 1 0 200 ffff8c4c7bfeb8c0 softbio/0
0 3 1 0 200 ffff8c4c7bfeb480 softnet/0
0 2 1 0 201 ffff8c4c7bfeb040 idle/0
0 0 3 1 200 ffffffff86741080 swapper uvm
[Locks tracked through LWPs]

****** LWP 16697.16697 (syz-executor.0) @ 0xffff8c4b5d45e5c0, l_stat=7

*** Locks held:

* Lock 0 (initialized at vcache_alloc)
lock address : 0xffff8c4b692ab700 type : sleep/adaptive
initialized : 0xffffffff839e72e1
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 1
relevant lwp : 0xffff8c4b5d45e5c0 last held: 0xffff8c4b5d45e5c0
last locked* : 0xffffffff83a47b50 unlocked : 0xffffffff83a47cd4
owner/count : 0xffff8c4b5d45e5c0 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

* Lock 1 (initialized at vcache_alloc)
lock address : 0xffff8c4b696a9540 type : sleep/adaptive
initialized : 0xffffffff839e72e1
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 1
relevant lwp : 0xffff8c4b5d45e5c0 last held: 0xffff8c4b5d45e5c0
last locked* : 0xffffffff83a47b50 unlocked : 000000000000000000
owner/count : 0xffff8c4b5d45e5c0 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

*** Locks wanted:

* Lock 0 (initialized at main)
lock address : 0xffffffff86bd79c0 type : spin
initialized : 0xffffffff83ff4666
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 1
relevant cpu : 1 last held: 0
relevant lwp : 0xffff8c4b5d45e5c0 last held: 0xffff8c4b65c984c0
last locked* : 0xffffffff837f7a60 unlocked : 0xffffffff802ae905
curcpu holds : 1 wanted by: 000000000000000000

****** LWP 8018.8018 (syz-executor.2) @ 0xffff8c4b65043bc0, l_stat=2

*** Locks held:

* Lock 0 (initialized at vcache_alloc)
lock address : 0xffff8c4b5bd4d280 type : sleep/adaptive
initialized : 0xffffffff839e72e1
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff8c4b65043bc0 last held: 0xffff8c4b65043bc0
last locked* : 0xffffffff83a47b50 unlocked : 0xffffffff83a47cd4
owner/count : 0xffff8c4b65043bc0 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

* Lock 1 (initialized at vcache_alloc)
lock address : 0xffff8c4b694c1ec0 type : sleep/adaptive
initialized : 0xffffffff839e72e1
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff8c4b65043bc0 last held: 0xffff8c4b65043bc0
last locked* : 0xffffffff83a47b50 unlocked : 000000000000000000
owner/count : 0xffff8c4b65043bc0 flags : 0x0000000000000004
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 547.547 (dhcpcd) @ 0xffff8c4b57a8f8c0, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff86bd7ac0 type : sleep/adaptive
initialized : 0xffffffff83705787
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff8c4b57a8f8c0 last held: 000000000000000000
last locked : 000000000000000000 unlocked*: 000000000000000000
owner field : 000000000000000000 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

****** LWP 742.742 (dhcpcd) @ 0xffff8c4b57245300, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff86bd7ac0 type : sleep/adaptive
initialized : 0xffffffff83705787
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 0
relevant lwp : 0xffff8c4b57245300 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) @ 0xffff8c4b56d8db00, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff86bd7ac0 type : sleep/adaptive
initialized : 0xffffffff83705787
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 0
relevant lwp : 0xffff8c4b56d8db00 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) @ 0xffff8c4b57245b80, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff86bd7ac0 type : sleep/adaptive
initialized : 0xffffffff83705787
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff8c4b57245b80 last held: 000000000000000000
last locked : 000000000000000000 unlocked*: 000000000000000000
owner field : 000000000000000000 wait/spin: 0/0
Turnstile: no active turnstile for this lock.

****** LWP 0.26 (softclk/1) @ 0xffff8c4b4cbac240, l_stat=1

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff86bd7ac0 type : sleep/adaptive
initialized : 0xffffffff83705787
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 0
relevant lwp : 0xffff8c4b4cbac240 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) @ 0xffff8c4c7af5e100, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff86bd7ac0 type : sleep/adaptive
initialized : 0xffffffff83705787
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff8c4c7af5e100 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) @ 0xffffffff86741080, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff86bd7ac0 type : sleep/adaptive
initialized : 0xffffffff83705787
shared holds : 0 exclusive: 0
shares wanted: 0 exclusive: 0
relevant cpu : 1 last held: 0
relevant lwp : 0xffffffff86741080 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 : 0xffffffff86bd79c0 type : spin
initialized : 0xffffffff83ff4666
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 1
relevant cpu : 0 last held: 0
relevant lwp : 0xffff8c4b65c984c0 last held: 0xffff8c4b65c984c0
last locked* : 0xffffffff837f7a60 unlocked : 0xffffffff802ae905
curcpu holds : 1 wanted by: 000000000000000000

* Lock 1 (initialized at kprintf_init)
lock address : 0xffffffff86cbb6e8 type : spin
initialized : 0xffffffff8384ffd3
shared holds : 0 exclusive: 1
shares wanted: 0 exclusive: 0
relevant cpu : 0 last held: 0
relevant lwp : 0xffff8c4b65c984c0 last held: 0xffff8c4b65c984c0
last locked* : 0xffffffff83850061 unlocked : 0xffffffff838500dc
owner field : 0x0000000000000800 wait/spin: 0/1

PAGE FLAG PQ UOBJECT UANON
0xffff908000007180 0045 00000000 0x0 0x0
0xffff908000007200 0045 00000000 0x0 0x0
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0xffff908000015f00 0001 00000000 0x0 0x0
0xffff908000015f80 0001 00000000 0x0 0x0
0xffff908000016000 0001 00000000 0x0 0x0
0xffff908000016080 0001 00000000 0x0 0x0
0xffff908000016100 0001 00000000 0x0 0x0
0xffff908000016180 0001 00000000 0x0 0x0
0xffff908000016200 0001 00000000 0x0 0x0
0xffff908000016280 0001 00000000 0x0 0x0
0xffff908000016300 0001 00000000 0x0 0x0
0xffff908000016380 0001 00000000 0x0 0x0
0xffff908000016400 0001 00000000 0x0 0x0
0xffff908000016480 0001 00000000 0x0 0x0
0xffff908000016500 0001 00000000 0x0 0x0
0xffff908000016580 0001 00000000 0x0 0x0
0xffff908000016600 0001 00000000 0x0 0x0
0xffff908000016680 0001 00000000 0x0 0x0
0xffff908000016700 0001 00000000 0x0 0x0
0xffff908000016780 0001 00000000 0x0 0x0
0xffff908000016800 0001 00000000 0x0 0x0
0xffff908000016880 0001 00000000 0x0 0x0
0xffff908000016900 0001 00000000 0x0 0x0
0xffff908000016980 0001 00000000 0x0 0x0
0xffff908000016a00 0001 00000000 0x0 0x0
0xffff908000016a80 0001 00000000 0x0 0x0
0xffff908000016b00 0001 00000000 0x0 0x0
0xffff908000016b80 0001 00000000 0x0 0x0
0xffff908000016c00 0001 00000000 0x0 0x0
0xffff908000016c80 0001 00000000 0x0 0x0
0xffff908000016d00 0001 00000000 0x0 0x0
0xffff908000016d80 0001 00000000 0x0 0x0
0xffff908000016e00 0001 00000000 0x0 0x0
0xffff908000016e80 0001 00000000 0x0 0x0
0xffff908000016f00 0001 00000000 0x0 0x0
0xffff908000016f80 0001 00000000 0x0 0x0
0xffff908000017000 0001 00000000 0x0 0x0
0xffff908000017080 0001 00000000 0x0 0x0
0xffff908000017100 0001 00000000 0x0 0x0
0xffff908000017180 0001 00000000 0x0 0x0
0xffff908000017200 0001 00000000 0x0 0x0
0xffff908000017280 0001 00000000 0x0 0x0
0xffff908000017300 0001 00000000 0x0 0x0
0xffff908000017380 0001 00000000 0x0 0x0
0xffff908000017400 0001 00000000 0x0 0x0
0xffff908000017480 0001 00000000 0x0 0x0
0xffff908000017500 0001 00000000 0x0 0x0
0xffff908000017580 0001 00000000 0x0 0x0
0xffff908000017600 0001 00000000 0x0 0x0
0xffff908000017680 0001 00000000 0x0 0x0
0xffff908000017700 0001 00000000 0x0 0x0
0xffff908000017780 0001 00000000 0x0 0x0
0xffff908000017800 0041 00000000 0x0 0x0
0xffff908000017880 0041 00000000 0x0 0x0
0xffff908000017900 0041 00000000 0x0 0x0
0xffff908000017980 0041 00000000 0x0 0x0
0xffff908000017a00 0041 00000000 0x0 0x0
0xffff908000017a80 0041 00000000 0x0 0x0
0xffff908000017b00 0041 00000000 0x0 0x0
0xffff908000017b80 0041 00000000 0x0 0x0
0xffff908000017c00 0041 00000000 0x0 0x0
0xffff908000017c80 0041 00000000 0x0 0x0
0xffff908000017d00 0041 00000000 0x0 0x0
0xffff908000017d80 0041 00000000 0x0 0x0
0xffff908000017e00 0041 00000000 0x0 0x0
0xffff908000017e80 0041 00000000 0x0 0x0
0xffff908000017f00 0041 00000000 0x0 0x0
0xffff908000017f80 0041 00000000 0x0 0x0
0xffff908000018000 0041 00000000 0x0 0x0
0xffff908000018080 0041 00000000 0x0 0x0
0xffff908000018100 0041 00000000 0x0 0x0
0xffff908000018180 0041 00000000 0x0 0x0
0xffff908000018200 0041 00000000 0x0 0x0
0xffff908000018280 0041 00000000 0x0 0x0
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0xffff908000018500 0041 00000000 0x0 0x0
0xffff908000018580 0041 00000000 0x0 0x0
0xffff908000018600 0041 00000000 0x0 0x0
0xffff908000018680 0041 00000000 0x0 0x0
0xffff908000018700 0041 00000000 0x0 0x0
0xffff908000018780 0041 00000000 0x0 0x0
0xffff908000018800 0041 00000000 0x0 0x0
0xffff908000018880 0041 00000000 0x0 0x0
0xffff908000018900 0041 00000000 0x0 0x0
0xffff908000018980 0041 00000000 0x0 0x0
0xffff908000018a00 0041 00000000 0x0 0x0
0xffff908000018a80 0041 00000000 0x0 0x0
0xffff908000018b00 0041 00000000 0x0 0x0
0xffff908000018b80 0041 00000000 0x0 0x0
0xffff908000018c00 0041 00000000 0x0 0x0
0xffff908000018c80 0041 00000000 0x0 0x0
0xffff908000018d00 0041 00000000 0x0 0x0
0xffff908000018d80 0001 00000000 0x0 0x0
0xffff908000018e00 0001 00000000 0x0 0x0
0xffff908000018e80 0001 00000000 0x0 0x0
0xffff908000018f00 0001 00000000 0x0 0x0
0xffff908000018f80 0001 00000000 0x0 0x0
0xffff908000019000 0001 00000000 0x0 0x0
0xffff908000019080 0001 00000000 0x0 0x0
0xffff908000019100 0001 00000000 0x0 0x0
0xffff908000019180 0001 00000000 0x0 0x0
0xffff908000019200 0001 00000000 0x0 0x0
0xffff908000019280 0001 00000000 0x0 0x0
0xffff908000019300 0001 00000000 0x0 0x0
0xffff908000019380 0001 00000000 0x0 0x0
0xffff908000019400 0001 00000000 0x0 0x0
0xffff908000019480 0001 00000000 0x0 0x0
0xffff908000019500 0001 00000000 0x0 0x0
0xffff908000019580 0001 00000000 0x0 0x0
0xffff908000019600 0001 00000000 0x0 0x0
0xffff908000019680 0001 00000000 0x0 0x0
0xffff908000019700 0001 00000000 0x0 0x0
0xffff908000019780 0001 00000000 0x0 0x0
0xffff908000019800 0001 00000000 0x0 0x0
0xffff908000019880 0001 00000000 0x0 0x0
0xffff908000019900 0001 00000000 0x0 0x0
0xffff908000019980 0001 00000000 0x0 0x0
0xffff908000019a00 0001 00000000 0x0 0x0
0xffff908000019a80 0001 00000000 0x0 0x0
0xffff908000019b00 0001 00000000 0x0 0x0
0xffff908000019b80 0001 00000000 0x0 0x0
0xffff908000019c00 0001 00000000 0x0 0x0
0xffff908000019c80 0001 00000000 0x0 0x0
0xffff908000019d00 0001 00000000 0x0 0x0
0xffff908000019d80 0001 00000000 0x0 0x0
0xffff908000019e00 0001 00000000 0x0 0x0
0xffff908000019e80 0001 00000000 0x0 0x0
0xffff908000019f00 0001 00000000 0x0 0x0
0xffff908000019f80 0001 00000000 0x0 0x0
0xffff90800001a000 0001 00000000 0x0 0x0
0xffff90800001a080 0001 00000000 0x0 0x0
0xffff90800001a100 0001 00000000 0x0 0x0
0xffff90800001a180 0001 00000000 0x0

---
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.

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Aug 27, 2022, 4:42:21 PM8/27/22
to Taylor R Campbell, rias...@netbsd.org, syzkaller-...@googlegroups.com
> #syz test: https://github.com/NetBSD/src trunk

This crash does not have a reproducer. I cannot test it.

>
> https://syzkaller.appspot.com/bug?id=acc5cee190fc1b6ce9ca203fd3837261e69cf289
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