uvm_fault: checkalias (2)
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syzbot
Jan 24, 2026, 8:20:34 PM (5 days ago) Jan 24
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 12762e433761 The Qualcomm QCS6490/SC7280 SoC needs the SMM..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=17527d22580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=8cc1e70cfa72da226f48
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/fb0ae76ce5a7/disk-12762e43.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/94c65e783eb0/bsd-12762e43.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/bab4af1cef77/kernel-12762e43.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8cc1e7...@syzkaller.appspotmail.com
uvm_fault(0xfffffd806c9a8d00, 0x18, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at checkalias+0xb7: movl 0x18(%r13),%ebx
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*483045 67526 0 0 0x4000000 0 syz-executor
checkalias(fffffd806b3350f0,21700,0) at checkalias+0xb7 sys/kern/vfs_subr.c:574
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 getdevvp sys/kern/vfs_subr.c:-1 [inline]
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 sys/kern/vfs_subr.c:517
spec_open_clone(ffff80003c13f0b8) at spec_open_clone+0x1e2 sys/kern/spec_vnops.c:713
spec_open(ffff80003c13f0b8) at spec_open+0x316 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd806f4b8030,9,fffffd8007bfd750,ffff80002a7762a0) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138
vn_open(ffff80003c13f300,9,0) at vn_open+0x6a0 sys/kern/vfs_vnops.c:177
doopenat(ffff80002a7762a0,ffffff9c,200000000080,8,0,ffff80003c13f4a0) at doopenat+0x34d sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c13f550) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c13f550) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x689c533c320, count: 6
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: uvm_fault(0xfffffd806c9a8d00, 0x18, 0, 1) -> e
ddb> trace
checkalias(fffffd806b3350f0,21700,0) at checkalias+0xb7 sys/kern/vfs_subr.c:574
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 getdevvp sys/kern/vfs_subr.c:-1 [inline]
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 sys/kern/vfs_subr.c:517
spec_open_clone(ffff80003c13f0b8) at spec_open_clone+0x1e2 sys/kern/spec_vnops.c:713
spec_open(ffff80003c13f0b8) at spec_open+0x316 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd806f4b8030,9,fffffd8007bfd750,ffff80002a7762a0) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138
vn_open(ffff80003c13f300,9,0) at vn_open+0x6a0 sys/kern/vfs_vnops.c:177
doopenat(ffff80002a7762a0,ffffff9c,200000000080,8,0,ffff80003c13f4a0) at doopenat+0x34d sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c13f550) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c13f550) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x689c533c320, count: -9
ddb> show registers
rdi 0x131700 acpi_pdirpa+0x11d571
rsi 0x21700 acpi_pdirpa+0xd571
rbp 0xffff80003c13ef60
rbx 0x131700 acpi_pdirpa+0x11d571
rdx 0
rcx 0xfffffd806b335a88
rax 0xffff80002a7762a0
r8 0
r9 0xffffffffffffffff
r10 0x770cd8ef8e37f133
r11 0x9f2d59022466b861
r12 0
r13 0
r14 0x21700 acpi_pdirpa+0xd571
r15 0xfffffd806b952e98
rip 0xffffffff81d90357 checkalias+0xb7
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80003c13eef0
ss 0
checkalias+0xb7: movl 0x18(%r13),%ebx
ddb> show proc
PROC (syz-executor) tid=483045 pid=67526 tcnt=4 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=82, usrpri=82, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff800033cf8800,0xffff80003c96b790
process=0xffff8000ffff8018 user=0xffff80003c13a000, vmspace=0xfffffd806c9a8d00
estcpu=32, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
92654 257047 35311 0 2 0 syz-executor
92654 361974 35311 0 2 0x4000000 syz-executor
88542 171981 10131 0 2 0 syz-executor
88542 44055 10131 0 2 0x4000000 syz-executor
60975 430805 15409 0 2 0 syz-executor
60975 412014 15409 0 2 0x4000000 syz-executor
60975 288502 15409 0 2 0x4000000 syz-executor
38602 514815 92394 0 2 0 syz-executor
38602 59500 92394 0 3 0x4000080 fsleep syz-executor
91458 80886 94095 0 2 0 syz-executor
91458 186700 94095 0 3 0x4000080 dtread syz-executor
91458 102237 94095 0 2 0x4000000 syz-executor
67526 329265 43860 0 2 0 syz-executor
*67526 483045 43860 0 7 0x4000000 syz-executor
67526 244225 43860 0 3 0x4000080 fsleep syz-executor
67526 120181 43860 0 3 0x4000080 fsleep syz-executor
97265 47808 0 0 3 0x14200 acct acct
94095 488820 20829 0 3 0x82 nanoslp syz-executor
43860 458576 20829 0 3 0x82 nanoslp syz-executor
39505 210500 0 0 3 0x14280 nfsidl nfsio
30757 479625 0 0 3 0x14280 nfsidl nfsio
64767 353777 0 0 3 0x14280 nfsidl nfsio
16914 281616 0 0 3 0x14280 nfsidl nfsio
25223 247479 0 0 3 0x14280 nfsidl nfsio
35882 68383 0 0 3 0x14280 nfsidl nfsio
11731 131687 0 0 3 0x14280 nfsidl nfsio
10508 335128 0 0 3 0x14280 nfsidl nfsio
19618 116501 0 0 3 0x14280 nfsidl nfsio
77629 39878 0 0 3 0x14280 nfsidl nfsio
83831 521565 0 0 3 0x14280 nfsidl nfsio
31908 513087 0 0 3 0x14280 nfsidl nfsio
39536 465560 0 0 3 0x14280 nfsidl nfsio
90477 371430 0 0 3 0x14280 nfsidl nfsio
86129 487776 0 0 3 0x14280 nfsidl nfsio
55008 27307 0 0 3 0x14280 nfsidl nfsio
40971 63226 0 0 3 0x14280 nfsidl nfsio
97840 311445 0 0 3 0x14280 nfsidl nfsio
50743 440420 0 0 3 0x14280 nfsidl nfsio
7273 463267 0 0 3 0x14280 nfsidl nfsio
35311 51555 20829 0 3 0x82 nanoslp syz-executor
15409 300995 20829 0 3 0x82 nanoslp syz-executor
12312 373542 20829 0 2 0x2 syz-executor
92394 217313 20829 0 3 0x82 nanoslp syz-executor
10131 238433 20829 0 3 0x82 nanoslp syz-executor
66650 208374 20829 0 2 0x2 syz-executor
20829 26986 6716 0 3 0x82 kqread syz-executor
6716 288351 31939 0 3 0x10008a sigsusp ksh
31939 36332 47309 0 3 0x98 kqread sshd-session
47309 73072 80245 0 3 0x92 kqread sshd-session
92863 174675 1 0 3 0x100083 ttyopn getty
80245 335252 1 0 3 0x88 kqread sshd
12575 11532 87942 73 3 0x1100090 kqread syslogd
87942 407723 1 0 3 0x100082 sbwait syslogd
74653 87820 1 0 3 0x100080 kqread resolvd
76876 125205 48388 77 3 0x100092 kqread dhcpleased
94643 176573 48388 77 3 0x100092 kqread dhcpleased
48388 75616 1 0 3 0x80 kqread dhcpleased
72438 60371 0 0 3 0x14200 bored smr
32062 214438 0 0 2 0x14200 zerothread
46916 287279 0 0 3 0x14200 aiodoned aiodoned
61752 247499 0 0 3 0x14200 syncer update
67181 8451 0 0 3 0x14200 cleaner cleaner
30286 519371 0 0 3 0x14200 reaper reaper
18621 379845 0 0 3 0x14200 pgdaemon pagedaemon
68486 288661 0 0 3 0x14200 bored viomb
66867 395892 0 0 3 0x40014200 acpi0 acpi0
85458 382611 0 0 2 0x14200 softnet0
3236 353594 0 0 3 0x14200 bored systqmp
42610 51851 0 0 3 0x14200 bored systq
68514 332362 0 0 3 0x40014200 tmoslp softclock
90940 236375 0 0 3 0x40014200 idle0
1 260551 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11041 12118K 12361K 166960K 13622 0
pcb 17 16K 18K 166960K 202 0
rtable 201 8K 9K 166960K 549 0
pf 29 12K 15K 166960K 137 0
ifaddr 35 6K 7K 166960K 104 0
ifgroup 46 2K 2K 166960K 176 0
sysctl 4 1K 9K 166960K 16 0
counters 32 17K 18K 166960K 101 0
ioctlops 0 0K 4K 166960K 146 0
iov 0 0K 16K 166960K 51 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1424 90K 90K 166960K 2341 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 2K 6K 166960K 21 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 64 0
dirhash 12 2K 2K 166960K 27 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 16 57K 110K 166960K 1076 0
sigio 0 0K 0K 166960K 16 0
proc 60 59K 91K 166960K 641 0
subproc 72 4K 4K 166960K 90 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 225 0
in_multi 74 5K 7K 166960K 164 0
ether_multi 1 0K 0K 166960K 11 0
mrt 1 0K 0K 166960K 3 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 91 413K 413K 166960K 91 0
exec 0 0K 1K 166960K 523 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 5 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 217 135K 159K 166960K 12352 0
UVM aobj 19 6K 8K 166960K 22 0
pinsyscall 38 76K 90K 166960K 2235 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 47 0
NDP 10 0K 2K 166960K 77 0
temp 76 8676K 8756K 166960K 36329 0
kqueue 14 22K 32K 166960K 243 0
SYN cache 2 8K 16K 166960K 3 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 140 0 137 2 0 2 2 0 8 1
rtentry 136 162 0 83 4 0 4 4 0 8 0
unpcb 144 869 0 854 6 0 6 6 0 8 5
syncache 336 11 0 11 2 1 1 1 0 8 1
tcpqe 32 2 0 2 1 0 1 1 0 8 1
tcpcb 736 391 0 386 4 0 4 4 0 8 3
arp 96 31 0 13 1 0 1 1 0 8 0
ipq 40 9 0 8 1 0 1 1 0 8 0
ipqe 40 14 0 13 1 0 1 1 0 8 0
inpcb 328 1180 0 1171 10 0 10 10 0 8 8
ip6q 72 1 0 1 1 0 1 1 0 8 1
ip6af 40 1 0 1 1 0 1 1 0 8 1
nd6 112 35 0 18 1 0 1 1 0 8 0
pkpcb 40 12 0 12 1 0 1 1 0 8 1
kcovpl 48 10 0 2 1 0 1 1 0 8 0
ppxss 1072 56 0 56 1 0 1 1 0 8 1
pppxif 1384 3 0 3 1 0 1 1 0 8 1
pfstscr 40 1 0 1 1 0 1 1 0 8 1
pfstkey 128 1 0 1 1 0 1 1 0 8 1
pfstate 384 1 0 1 1 0 1 1 0 8 1
pfrule 1360 1 0 1 1 0 1 1 0 8 1
art_heap8 4096 3 0 0 3 0 3 3 0 8 0
art_heap4 256 624 0 275 29 0 29 29 0 8 4
art_table 40 627 0 275 5 0 5 5 0 8 0
art_node 32 161 0 89 1 0 1 1 0 8 0
sysvmsgpl 40 8 0 7 1 0 1 1 0 8 0
semupl 112 1 0 1 1 0 1 1 0 8 1
semapl 112 61 0 51 1 0 1 1 0 8 0
shmpl 112 15 0 1 1 0 1 1 0 8 0
dirhash 1024 27 0 10 3 0 3 3 0 8 0
dino2pl 256 3363 0 1870 95 0 95 95 0 8 0
ffsino 256 3363 0 1870 95 0 95 95 0 8 0
nchpl 144 4830 0 3137 64 0 64 64 0 8 0
rtmask 32 10 0 10 1 0 1 1 0 8 1
vnodes 216 4042 0 0 225 0 225 225 0 8 0
vnodes: pool(0xffffffff839671e0:vnodes): page inconsistency: page 0x0; at page head addr 0xfffffd806b952f90 (p 0xfffffd806b952000)
namei 1024 16695 0 16695 2 1 1 2 0 8 1
vcpupl 3904 3 0 1 1 0 1 1 0 8 0
vmpool 808 4 0 2 1 0 1 1 0 8 0
kstatmem 264 114 0 94 2 0 2 2 0 8 0
scsiplug 72 4 0 4 1 0 1 1 0 8 1
scxspl 216 15307 0 15307 9 1 8 8 1 8 8
plimitpl 152 236 0 220 1 0 1 1 0 8 0
sigapl 424 1386 0 1324 8 0 8 8 0 8 0
knotepl 120 41587 0 41539 20 9 11 16 0 8 8
kqueuepl 184 325 0 314 1 0 1 1 0 8 0
pipepl 304 184 0 157 3 0 3 3 0 8 0
fdescpl 448 1349 0 1320 4 0 4 4 0 8 0
filepl 120 8441 0 8232 13 0 13 13 0 8 5
lockfpl 104 258 0 256 1 0 1 1 0 8 0
lockfspl 48 113 0 111 1 0 1 1 0 8 0
sessionpl 144 28 0 20 1 0 1 1 0 8 0
pgrppl 48 80 0 64 1 0 1 1 0 8 0
ucredpl 104 1165 0 1153 1 0 1 1 0 8 0
zombiepl 144 2147 0 2147 2 1 1 1 0 8 1
processpl 1152 1387 0 1324 5 0 5 5 0 8 0
procpl 664 3199 0 3126 8 0 8 8 0 8 0
sosppl 176 10 0 9 1 0 1 1 0 8 0
sockpl 552 2235 0 2208 21 10 11 15 0 8 8
mcl64k 65536 80 0 80 1 0 1 1 0 8 1
mcl16k 16384 5 0 5 1 0 1 1 0 8 1
mcl12k 12288 2 0 2 1 0 1 1 0 8 1
mcl9k 9216 1 0 1 1 0 1 1 0 8 1
mcl8k 8192 13 0 13 2 1 1 1 0 8 1
mcl4k 4096 3827 0 3772 15 7 8 15 0 8 0
mcl2k 2048 1518 0 1515 9 0 9 9 0 8 8
mtagpl 96 18 0 13 2 1 1 1 0 8 0
mbufpl 256 16833 0 16679 25 2 23 24 0 8 8
bufpl 280 4546 0 137 315 0 315 315 0 8 0
anonpl 24 193769 0 190778 47 2 45 45 0 187 17
amapchunkpl 152 41173 0 40741 34 0 34 34 0 158 14
amappl16 200 2875 0 2844 17 6 11 14 0 8 8
amappl15 192 8 0 8 1 1 0 1 0 8 0
amappl14 184 11 0 11 1 1 0 1 0 8 0
amappl13 176 455 0 454 1 0 1 1 0 8 0
amappl12 168 1718 0 1681 2 0 2 2 0 8 0
amappl11 160 2 0 2 1 1 0 1 0 8 0
amappl10 152 69 0 59 1 0 1 1 0 8 0
amappl9 144 260 0 259 1 0 1 1 0 8 0
amappl8 136 22 0 21 1 0 1 1 0 8 0
amappl7 128 85 0 84 1 0 1 1 0 8 0
amappl6 120 290 0 278 1 0 1 1 0 8 0
amappl5 112 88 0 80 1 0 1 1 0 8 0
amappl4 104 415 0 392 1 0 1 1 0 8 0
amappl3 96 6961 0 6880 3 0 3 3 0 8 0
amappl2 88 1514 0 1445 2 0 2 2 0 8 0
amappl1 80 14566 0 14034 15 0 15 15 0 8 2
amappl 88 11395 0 11245 5 0 5 5 0 92 0
uvmvnodes 80 117 0 0 3 0 3 3 0 8 0
dma32768 32768 1 0 1 1 0 1 1 0 8 1
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 2 0 1 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 254 0 254 2 1 1 1 0 8 1
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 21 0 3 1 0 1 1 0 8 0
uaddrrnd 24 1348 0 1320 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1348 0 1320 1 0 1 1 0 8 0
vmmpekpl 168 13058 0 13005 3 0 3 3 0 8 0
vmmpepl 168 93009 0 91284 93 0 93 93 0 357 8
vmsppl 368 1347 0 1320 4 0 4 4 0 8 1
rwobjpl 40 26766 0 25810 13 0 13 13 0 8 1
pdppl 4096 2711 0 2646 116 47 69 75 0 8 4
pvpl 32 576266 0 568362 113 0 113 113 0 265 28
pmappl 216 1351 0 1322 2 0 2 2 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 416 0 61 11 0 11 11 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
checkalias(fffffd806b3350f0,21700,0) at checkalias+0xb7 sys/kern/vfs_subr.c:574
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 getdevvp sys/kern/vfs_subr.c:-1 [inline]
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 sys/kern/vfs_subr.c:517
spec_open_clone(ffff80003c13f0b8) at spec_open_clone+0x1e2 sys/kern/spec_vnops.c:713
spec_open(ffff80003c13f0b8) at spec_open+0x316 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd806f4b8030,9,fffffd8007bfd750,ffff80002a7762a0) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138
vn_open(ffff80003c13f300,9,0) at vn_open+0x6a0 sys/kern/vfs_vnops.c:177
doopenat(ffff80002a7762a0,ffffff9c,200000000080,8,0,ffff80003c13f4a0) at doopenat+0x34d sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c13f550) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c13f550) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x689c533c320, count: -9
ddb> machine ddbcpu 1
No such command
ddb> trace
checkalias(fffffd806b3350f0,21700,0) at checkalias+0xb7 sys/kern/vfs_subr.c:574
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 getdevvp sys/kern/vfs_subr.c:-1 [inline]
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 sys/kern/vfs_subr.c:517
spec_open_clone(ffff80003c13f0b8) at spec_open_clone+0x1e2 sys/kern/spec_vnops.c:713
spec_open(ffff80003c13f0b8) at spec_open+0x316 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd806f4b8030,9,fffffd8007bfd750,ffff80002a7762a0) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138
vn_open(ffff80003c13f300,9,0) at vn_open+0x6a0 sys/kern/vfs_vnops.c:177
doopenat(ffff80002a7762a0,ffffff9c,200000000080,8,0,ffff80003c13f4a0) at doopenat+0x34d sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c13f550) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c13f550) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x689c533c320, count: -9
---
This report is generated by a bot. It may contain errors.
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syzbot found the following issue on:
HEAD commit: 12762e433761 The Qualcomm QCS6490/SC7280 SoC needs the SMM..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=17527d22580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=8cc1e70cfa72da226f48
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/fb0ae76ce5a7/disk-12762e43.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/94c65e783eb0/bsd-12762e43.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/bab4af1cef77/kernel-12762e43.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8cc1e7...@syzkaller.appspotmail.com
uvm_fault(0xfffffd806c9a8d00, 0x18, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at checkalias+0xb7: movl 0x18(%r13),%ebx
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*483045 67526 0 0 0x4000000 0 syz-executor
checkalias(fffffd806b3350f0,21700,0) at checkalias+0xb7 sys/kern/vfs_subr.c:574
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 getdevvp sys/kern/vfs_subr.c:-1 [inline]
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 sys/kern/vfs_subr.c:517
spec_open_clone(ffff80003c13f0b8) at spec_open_clone+0x1e2 sys/kern/spec_vnops.c:713
spec_open(ffff80003c13f0b8) at spec_open+0x316 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd806f4b8030,9,fffffd8007bfd750,ffff80002a7762a0) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138
vn_open(ffff80003c13f300,9,0) at vn_open+0x6a0 sys/kern/vfs_vnops.c:177
doopenat(ffff80002a7762a0,ffffff9c,200000000080,8,0,ffff80003c13f4a0) at doopenat+0x34d sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c13f550) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c13f550) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x689c533c320, count: 6
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: uvm_fault(0xfffffd806c9a8d00, 0x18, 0, 1) -> e
ddb> trace
checkalias(fffffd806b3350f0,21700,0) at checkalias+0xb7 sys/kern/vfs_subr.c:574
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 getdevvp sys/kern/vfs_subr.c:-1 [inline]
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 sys/kern/vfs_subr.c:517
spec_open_clone(ffff80003c13f0b8) at spec_open_clone+0x1e2 sys/kern/spec_vnops.c:713
spec_open(ffff80003c13f0b8) at spec_open+0x316 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd806f4b8030,9,fffffd8007bfd750,ffff80002a7762a0) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138
vn_open(ffff80003c13f300,9,0) at vn_open+0x6a0 sys/kern/vfs_vnops.c:177
doopenat(ffff80002a7762a0,ffffff9c,200000000080,8,0,ffff80003c13f4a0) at doopenat+0x34d sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c13f550) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c13f550) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x689c533c320, count: -9
ddb> show registers
rdi 0x131700 acpi_pdirpa+0x11d571
rsi 0x21700 acpi_pdirpa+0xd571
rbp 0xffff80003c13ef60
rbx 0x131700 acpi_pdirpa+0x11d571
rdx 0
rcx 0xfffffd806b335a88
rax 0xffff80002a7762a0
r8 0
r9 0xffffffffffffffff
r10 0x770cd8ef8e37f133
r11 0x9f2d59022466b861
r12 0
r13 0
r14 0x21700 acpi_pdirpa+0xd571
r15 0xfffffd806b952e98
rip 0xffffffff81d90357 checkalias+0xb7
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80003c13eef0
ss 0
checkalias+0xb7: movl 0x18(%r13),%ebx
ddb> show proc
PROC (syz-executor) tid=483045 pid=67526 tcnt=4 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=82, usrpri=82, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff800033cf8800,0xffff80003c96b790
process=0xffff8000ffff8018 user=0xffff80003c13a000, vmspace=0xfffffd806c9a8d00
estcpu=32, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
92654 257047 35311 0 2 0 syz-executor
92654 361974 35311 0 2 0x4000000 syz-executor
88542 171981 10131 0 2 0 syz-executor
88542 44055 10131 0 2 0x4000000 syz-executor
60975 430805 15409 0 2 0 syz-executor
60975 412014 15409 0 2 0x4000000 syz-executor
60975 288502 15409 0 2 0x4000000 syz-executor
38602 514815 92394 0 2 0 syz-executor
38602 59500 92394 0 3 0x4000080 fsleep syz-executor
91458 80886 94095 0 2 0 syz-executor
91458 186700 94095 0 3 0x4000080 dtread syz-executor
91458 102237 94095 0 2 0x4000000 syz-executor
67526 329265 43860 0 2 0 syz-executor
*67526 483045 43860 0 7 0x4000000 syz-executor
67526 244225 43860 0 3 0x4000080 fsleep syz-executor
67526 120181 43860 0 3 0x4000080 fsleep syz-executor
97265 47808 0 0 3 0x14200 acct acct
94095 488820 20829 0 3 0x82 nanoslp syz-executor
43860 458576 20829 0 3 0x82 nanoslp syz-executor
39505 210500 0 0 3 0x14280 nfsidl nfsio
30757 479625 0 0 3 0x14280 nfsidl nfsio
64767 353777 0 0 3 0x14280 nfsidl nfsio
16914 281616 0 0 3 0x14280 nfsidl nfsio
25223 247479 0 0 3 0x14280 nfsidl nfsio
35882 68383 0 0 3 0x14280 nfsidl nfsio
11731 131687 0 0 3 0x14280 nfsidl nfsio
10508 335128 0 0 3 0x14280 nfsidl nfsio
19618 116501 0 0 3 0x14280 nfsidl nfsio
77629 39878 0 0 3 0x14280 nfsidl nfsio
83831 521565 0 0 3 0x14280 nfsidl nfsio
31908 513087 0 0 3 0x14280 nfsidl nfsio
39536 465560 0 0 3 0x14280 nfsidl nfsio
90477 371430 0 0 3 0x14280 nfsidl nfsio
86129 487776 0 0 3 0x14280 nfsidl nfsio
55008 27307 0 0 3 0x14280 nfsidl nfsio
40971 63226 0 0 3 0x14280 nfsidl nfsio
97840 311445 0 0 3 0x14280 nfsidl nfsio
50743 440420 0 0 3 0x14280 nfsidl nfsio
7273 463267 0 0 3 0x14280 nfsidl nfsio
35311 51555 20829 0 3 0x82 nanoslp syz-executor
15409 300995 20829 0 3 0x82 nanoslp syz-executor
12312 373542 20829 0 2 0x2 syz-executor
92394 217313 20829 0 3 0x82 nanoslp syz-executor
10131 238433 20829 0 3 0x82 nanoslp syz-executor
66650 208374 20829 0 2 0x2 syz-executor
20829 26986 6716 0 3 0x82 kqread syz-executor
6716 288351 31939 0 3 0x10008a sigsusp ksh
31939 36332 47309 0 3 0x98 kqread sshd-session
47309 73072 80245 0 3 0x92 kqread sshd-session
92863 174675 1 0 3 0x100083 ttyopn getty
80245 335252 1 0 3 0x88 kqread sshd
12575 11532 87942 73 3 0x1100090 kqread syslogd
87942 407723 1 0 3 0x100082 sbwait syslogd
74653 87820 1 0 3 0x100080 kqread resolvd
76876 125205 48388 77 3 0x100092 kqread dhcpleased
94643 176573 48388 77 3 0x100092 kqread dhcpleased
48388 75616 1 0 3 0x80 kqread dhcpleased
72438 60371 0 0 3 0x14200 bored smr
32062 214438 0 0 2 0x14200 zerothread
46916 287279 0 0 3 0x14200 aiodoned aiodoned
61752 247499 0 0 3 0x14200 syncer update
67181 8451 0 0 3 0x14200 cleaner cleaner
30286 519371 0 0 3 0x14200 reaper reaper
18621 379845 0 0 3 0x14200 pgdaemon pagedaemon
68486 288661 0 0 3 0x14200 bored viomb
66867 395892 0 0 3 0x40014200 acpi0 acpi0
85458 382611 0 0 2 0x14200 softnet0
3236 353594 0 0 3 0x14200 bored systqmp
42610 51851 0 0 3 0x14200 bored systq
68514 332362 0 0 3 0x40014200 tmoslp softclock
90940 236375 0 0 3 0x40014200 idle0
1 260551 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11041 12118K 12361K 166960K 13622 0
pcb 17 16K 18K 166960K 202 0
rtable 201 8K 9K 166960K 549 0
pf 29 12K 15K 166960K 137 0
ifaddr 35 6K 7K 166960K 104 0
ifgroup 46 2K 2K 166960K 176 0
sysctl 4 1K 9K 166960K 16 0
counters 32 17K 18K 166960K 101 0
ioctlops 0 0K 4K 166960K 146 0
iov 0 0K 16K 166960K 51 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1424 90K 90K 166960K 2341 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 2K 6K 166960K 21 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 64 0
dirhash 12 2K 2K 166960K 27 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 16 57K 110K 166960K 1076 0
sigio 0 0K 0K 166960K 16 0
proc 60 59K 91K 166960K 641 0
subproc 72 4K 4K 166960K 90 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 225 0
in_multi 74 5K 7K 166960K 164 0
ether_multi 1 0K 0K 166960K 11 0
mrt 1 0K 0K 166960K 3 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 91 413K 413K 166960K 91 0
exec 0 0K 1K 166960K 523 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 5 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 217 135K 159K 166960K 12352 0
UVM aobj 19 6K 8K 166960K 22 0
pinsyscall 38 76K 90K 166960K 2235 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 47 0
NDP 10 0K 2K 166960K 77 0
temp 76 8676K 8756K 166960K 36329 0
kqueue 14 22K 32K 166960K 243 0
SYN cache 2 8K 16K 166960K 3 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 140 0 137 2 0 2 2 0 8 1
rtentry 136 162 0 83 4 0 4 4 0 8 0
unpcb 144 869 0 854 6 0 6 6 0 8 5
syncache 336 11 0 11 2 1 1 1 0 8 1
tcpqe 32 2 0 2 1 0 1 1 0 8 1
tcpcb 736 391 0 386 4 0 4 4 0 8 3
arp 96 31 0 13 1 0 1 1 0 8 0
ipq 40 9 0 8 1 0 1 1 0 8 0
ipqe 40 14 0 13 1 0 1 1 0 8 0
inpcb 328 1180 0 1171 10 0 10 10 0 8 8
ip6q 72 1 0 1 1 0 1 1 0 8 1
ip6af 40 1 0 1 1 0 1 1 0 8 1
nd6 112 35 0 18 1 0 1 1 0 8 0
pkpcb 40 12 0 12 1 0 1 1 0 8 1
kcovpl 48 10 0 2 1 0 1 1 0 8 0
ppxss 1072 56 0 56 1 0 1 1 0 8 1
pppxif 1384 3 0 3 1 0 1 1 0 8 1
pfstscr 40 1 0 1 1 0 1 1 0 8 1
pfstkey 128 1 0 1 1 0 1 1 0 8 1
pfstate 384 1 0 1 1 0 1 1 0 8 1
pfrule 1360 1 0 1 1 0 1 1 0 8 1
art_heap8 4096 3 0 0 3 0 3 3 0 8 0
art_heap4 256 624 0 275 29 0 29 29 0 8 4
art_table 40 627 0 275 5 0 5 5 0 8 0
art_node 32 161 0 89 1 0 1 1 0 8 0
sysvmsgpl 40 8 0 7 1 0 1 1 0 8 0
semupl 112 1 0 1 1 0 1 1 0 8 1
semapl 112 61 0 51 1 0 1 1 0 8 0
shmpl 112 15 0 1 1 0 1 1 0 8 0
dirhash 1024 27 0 10 3 0 3 3 0 8 0
dino2pl 256 3363 0 1870 95 0 95 95 0 8 0
ffsino 256 3363 0 1870 95 0 95 95 0 8 0
nchpl 144 4830 0 3137 64 0 64 64 0 8 0
rtmask 32 10 0 10 1 0 1 1 0 8 1
vnodes 216 4042 0 0 225 0 225 225 0 8 0
vnodes: pool(0xffffffff839671e0:vnodes): page inconsistency: page 0x0; at page head addr 0xfffffd806b952f90 (p 0xfffffd806b952000)
namei 1024 16695 0 16695 2 1 1 2 0 8 1
vcpupl 3904 3 0 1 1 0 1 1 0 8 0
vmpool 808 4 0 2 1 0 1 1 0 8 0
kstatmem 264 114 0 94 2 0 2 2 0 8 0
scsiplug 72 4 0 4 1 0 1 1 0 8 1
scxspl 216 15307 0 15307 9 1 8 8 1 8 8
plimitpl 152 236 0 220 1 0 1 1 0 8 0
sigapl 424 1386 0 1324 8 0 8 8 0 8 0
knotepl 120 41587 0 41539 20 9 11 16 0 8 8
kqueuepl 184 325 0 314 1 0 1 1 0 8 0
pipepl 304 184 0 157 3 0 3 3 0 8 0
fdescpl 448 1349 0 1320 4 0 4 4 0 8 0
filepl 120 8441 0 8232 13 0 13 13 0 8 5
lockfpl 104 258 0 256 1 0 1 1 0 8 0
lockfspl 48 113 0 111 1 0 1 1 0 8 0
sessionpl 144 28 0 20 1 0 1 1 0 8 0
pgrppl 48 80 0 64 1 0 1 1 0 8 0
ucredpl 104 1165 0 1153 1 0 1 1 0 8 0
zombiepl 144 2147 0 2147 2 1 1 1 0 8 1
processpl 1152 1387 0 1324 5 0 5 5 0 8 0
procpl 664 3199 0 3126 8 0 8 8 0 8 0
sosppl 176 10 0 9 1 0 1 1 0 8 0
sockpl 552 2235 0 2208 21 10 11 15 0 8 8
mcl64k 65536 80 0 80 1 0 1 1 0 8 1
mcl16k 16384 5 0 5 1 0 1 1 0 8 1
mcl12k 12288 2 0 2 1 0 1 1 0 8 1
mcl9k 9216 1 0 1 1 0 1 1 0 8 1
mcl8k 8192 13 0 13 2 1 1 1 0 8 1
mcl4k 4096 3827 0 3772 15 7 8 15 0 8 0
mcl2k 2048 1518 0 1515 9 0 9 9 0 8 8
mtagpl 96 18 0 13 2 1 1 1 0 8 0
mbufpl 256 16833 0 16679 25 2 23 24 0 8 8
bufpl 280 4546 0 137 315 0 315 315 0 8 0
anonpl 24 193769 0 190778 47 2 45 45 0 187 17
amapchunkpl 152 41173 0 40741 34 0 34 34 0 158 14
amappl16 200 2875 0 2844 17 6 11 14 0 8 8
amappl15 192 8 0 8 1 1 0 1 0 8 0
amappl14 184 11 0 11 1 1 0 1 0 8 0
amappl13 176 455 0 454 1 0 1 1 0 8 0
amappl12 168 1718 0 1681 2 0 2 2 0 8 0
amappl11 160 2 0 2 1 1 0 1 0 8 0
amappl10 152 69 0 59 1 0 1 1 0 8 0
amappl9 144 260 0 259 1 0 1 1 0 8 0
amappl8 136 22 0 21 1 0 1 1 0 8 0
amappl7 128 85 0 84 1 0 1 1 0 8 0
amappl6 120 290 0 278 1 0 1 1 0 8 0
amappl5 112 88 0 80 1 0 1 1 0 8 0
amappl4 104 415 0 392 1 0 1 1 0 8 0
amappl3 96 6961 0 6880 3 0 3 3 0 8 0
amappl2 88 1514 0 1445 2 0 2 2 0 8 0
amappl1 80 14566 0 14034 15 0 15 15 0 8 2
amappl 88 11395 0 11245 5 0 5 5 0 92 0
uvmvnodes 80 117 0 0 3 0 3 3 0 8 0
dma32768 32768 1 0 1 1 0 1 1 0 8 1
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 2 0 1 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 254 0 254 2 1 1 1 0 8 1
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 21 0 3 1 0 1 1 0 8 0
uaddrrnd 24 1348 0 1320 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1348 0 1320 1 0 1 1 0 8 0
vmmpekpl 168 13058 0 13005 3 0 3 3 0 8 0
vmmpepl 168 93009 0 91284 93 0 93 93 0 357 8
vmsppl 368 1347 0 1320 4 0 4 4 0 8 1
rwobjpl 40 26766 0 25810 13 0 13 13 0 8 1
pdppl 4096 2711 0 2646 116 47 69 75 0 8 4
pvpl 32 576266 0 568362 113 0 113 113 0 265 28
pmappl 216 1351 0 1322 2 0 2 2 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 416 0 61 11 0 11 11 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
checkalias(fffffd806b3350f0,21700,0) at checkalias+0xb7 sys/kern/vfs_subr.c:574
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 getdevvp sys/kern/vfs_subr.c:-1 [inline]
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 sys/kern/vfs_subr.c:517
spec_open_clone(ffff80003c13f0b8) at spec_open_clone+0x1e2 sys/kern/spec_vnops.c:713
spec_open(ffff80003c13f0b8) at spec_open+0x316 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd806f4b8030,9,fffffd8007bfd750,ffff80002a7762a0) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138
vn_open(ffff80003c13f300,9,0) at vn_open+0x6a0 sys/kern/vfs_vnops.c:177
doopenat(ffff80002a7762a0,ffffff9c,200000000080,8,0,ffff80003c13f4a0) at doopenat+0x34d sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c13f550) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c13f550) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x689c533c320, count: -9
ddb> machine ddbcpu 1
No such command
ddb> trace
checkalias(fffffd806b3350f0,21700,0) at checkalias+0xb7 sys/kern/vfs_subr.c:574
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 getdevvp sys/kern/vfs_subr.c:-1 [inline]
cdevvp(21700,ffff80003c13efe0) at cdevvp+0xd2 sys/kern/vfs_subr.c:517
spec_open_clone(ffff80003c13f0b8) at spec_open_clone+0x1e2 sys/kern/spec_vnops.c:713
spec_open(ffff80003c13f0b8) at spec_open+0x316 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd806f4b8030,9,fffffd8007bfd750,ffff80002a7762a0) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138
vn_open(ffff80003c13f300,9,0) at vn_open+0x6a0 sys/kern/vfs_vnops.c:177
doopenat(ffff80002a7762a0,ffffff9c,200000000080,8,0,ffff80003c13f4a0) at doopenat+0x34d sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c13f550) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c13f550) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x689c533c320, count: -9
---
This report is generated by a bot. It may contain errors.
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