panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c"
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syzbot
Jun 25, 2024, 6:08:26 PMJun 25
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 00aa7573f64b asn1object: zap trailing whitespace
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=145896ae980000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=044acb4774a303715002
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/bfe757559839/disk-00aa7573.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/fdab2357f837/bsd-00aa7573.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/0db8d7b318dc/kernel-00aa7573.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+044acb...@syzkaller.appspotmail.com
panic: kWerAneRNlI NdGi:a gnSoPLs NOtT LiOcW EasRsEeDr tOioN nSY S"CduALLp e 13==7 N U-1LL2"3 28fa69il2e9d6: fEXiIle T "0/ s9y
zkaStopped at savectx+0xae: movl $0,%gs:0x680
TID PID UID PRFLAGS PFLAGS CPU COMMAND
468841 17517 0 0x8000000 0 1 syz-executor.5
*137368 48217 0 0x8000002 0 0 syz-executor.3
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7204b683e840, count: 14
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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu1: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
ddb{0}> trace
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7204b683e840, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800039e29210
rbx 0
rdx 0
rcx 0xffff80002a25a568
rax 0x3d
r8 0xffff800039e29140
r9 0xffffffffffffffff
r10 0x2556a6bf931ae79e
r11 0x2e013de206850189
r12 0
r13 0
r14 0xffff80002a25a568
r15 0
rip 0xffffffff815483ee savectx+0xae
cs 0x8
rflags 0x46
rsp 0xffff800039e29190
ss 0x10
savectx+0xae: movl $0,%gs:0x680
ddb{0}> show proc
PROC (syz-executor.3) tid=137368 pid=48217 tcnt=1 stat=onproc
flags process=8000002<EXEC> proc=0
runpri=17, usrpri=86, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a24f4a0,0xffff80002a24ef90
process=0xffff800038bcf5c8 user=0xffff800039e24000, vmspace=0xfffffd8070fd78a8
estcpu=36, cpticks=4, pctcpu=0.5, user=0, sys=2, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
27952 368593 7753 0 2 0x8000000 syz-executor.1
65070 74759 47483 0 2 0x8003000 syz-executor.0
17517 468841 72042 0 7 0x8000000 syz-executor.5
17517 131572 72042 0 3 0xc000080 netcon syz-executor.5
52917 421856 88469 0 3 0x8000080 nanoslp syz-executor.7
52917 11219 88469 0 3 0xc000080 netacc syz-executor.7
52917 34572 88469 0 3 0xc000080 fsleep syz-executor.7
61574 132650 48921 0 3 0x8000080 nanoslp syz-executor.2
61574 387628 48921 0 3 0xc000080 fsleep syz-executor.2
61574 348448 48921 0 3 0xc000080 kqread syz-executor.2
61574 33271 48921 0 3 0xc000080 fsleep syz-executor.2
93725 257643 30510 0 2 0x8000480 syz-executor.4
93725 51271 30510 0 3 0xc000080 fsleep syz-executor.4
93725 17557 30510 0 3 0xc000080 sbwait syz-executor.4
52780 129380 0 0 3 0x14200 acct acct
72042 494637 52585 0 2 0x8000482 syz-executor.5
30510 413988 52585 0 2 0x8000002 syz-executor.4
*48217 137368 52585 0 7 0x8000002 syz-executor.3
86078 297792 52585 0 3 0x8000082 wait syz-executor.6
88469 389527 52585 0 2 0x8000002 syz-executor.7
48921 313377 52585 0 3 0x8000082 nanoslp syz-executor.2
7753 450048 52585 0 3 0x8000082 nanoslp syz-executor.1
47483 335291 52585 0 3 0x8000082 nanoslp syz-executor.0
70132 76085 1 0 3 0x18100083 ttyin getty
67420 400586 0 0 3 0x14200 bored sosplice
2284 150435 46569 0 3 0x18100082 netio arp
46569 433746 1 0 3 0x810008a sigsusp sh
52585 373275 40209 0 3 0x1a000082 wait syz-fuzzer
52585 76192 40209 0 3 0x1e000082 nanoslp syz-fuzzer
52585 183915 40209 0 3 0x1e000082 thrsleep syz-fuzzer
52585 485207 40209 0 3 0x1e000082 thrsleep syz-fuzzer
52585 160167 40209 0 3 0x1e000082 wait syz-fuzzer
52585 198570 40209 0 3 0x1e000082 wait syz-fuzzer
52585 372426 40209 0 3 0x1e000082 thrsleep syz-fuzzer
52585 84114 40209 0 3 0x1e000082 thrsleep syz-fuzzer
52585 14875 40209 0 3 0x1e000082 thrsleep syz-fuzzer
52585 110114 40209 0 3 0x1e000082 wait syz-fuzzer
52585 502362 40209 0 3 0x1e000082 thrsleep syz-fuzzer
52585 426870 40209 0 3 0x1e000082 wait syz-fuzzer
52585 409474 40209 0 3 0x1e000082 wait syz-fuzzer
52585 367010 40209 0 3 0x1e000082 wait syz-fuzzer
52585 169131 40209 0 3 0x1e000082 kqread syz-fuzzer
52585 9318 40209 0 3 0x1e000082 wait syz-fuzzer
40209 405887 38732 0 3 0x810008a sigsusp ksh
38732 29974 43809 0 3 0x1800009a kqread sshd
43809 196019 1 0 3 0x18000088 kqread sshd
12234 198133 29633 73 3 0x19100090 kqread syslogd
29633 15910 1 0 3 0x18100082 sbwait syslogd
24877 412118 1 0 3 0x18100080 kqread resolvd
63133 186573 0 0 3 0x14200 bored smr
80136 50862 0 0 2 0x14200 zerothread
8592 199591 0 0 3 0x14200 aiodoned aiodoned
17728 89372 0 0 3 0x14200 syncer update
61841 421116 0 0 3 0x14200 cleaner cleaner
83646 76200 0 0 3 0x14200 reaper reaper
5690 443989 0 0 3 0x14200 pgdaemon pagedaemon
93132 498578 0 0 3 0x14200 bored viomb
73426 255201 0 0 3 0x40014200 acpi0 acpi0
19162 523016 0 0 3 0x40014200 idle1
66630 54973 0 0 3 0x14200 bored softnet3
97691 279485 0 0 3 0x14200 bored softnet2
63204 62765 0 0 3 0x14200 bored softnet1
53979 215791 0 0 3 0x14200 bored softnet0
65577 95421 0 0 3 0x14200 bored systqmp
8792 52208 0 0 3 0x14200 bored systq
86152 61029 0 0 3 0x14200 tmoslp softclockmp
25683 147498 0 0 3 0x40014200 tmoslp softclock
13850 448197 0 0 3 0x40014200 idle0
1 297045 0 0 3 0x8080082 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &iopl->mtx r = 0 (0xffff8000000a3088)
#0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x446 sys/kern/subr_witness.c:1157
#1 mtx_enter_try+0x103
#2 mtx_enter+0x4e sys/kern/kern_lock.c:266
#3 scsi_xsh_runqueue+0x90 sys/scsi/scsi_base.c:585
#4 scsi_xsh_add+0xcd sys/scsi/scsi_base.c:538
#5 sdstrategy+0x187 sys/scsi/sd.c:567
#6 spec_strategy+0x3c sys/kern/spec_vnops.c:448
#7 VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:634
#8 bwrite+0x1d3 sys/kern/vfs_bio.c:757
#9 ffs_update+0x27f sys/ufs/ffs/ffs_inode.c:111
#10 ffs_truncate+0x987
#11 ufs_rmdir+0x295 sys/ufs/ufs/ufs_vnops.c:1265
#12 VOP_RMDIR+0x12a sys/kern/vfs_vops.c:413
#13 dounlinkat+0x20e sys/kern/vfs_syscalls.c:1889
#14 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
#14 syscall+0x854 sys/arch/amd64/amd64/trap.c:577
#15 Xsyscall+0x128
CPU 1:
exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806b3e2210)
#0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x446 sys/kern/subr_witness.c:1157
#1 mtx_enter_try+0x103
#2 mtx_enter+0x4e sys/kern/kern_lock.c:266
#3 pmap_enter+0x1c6 rcr3 machine/cpufunc.h:139 [inline]
#3 pmap_enter+0x1c6 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline]
#3 pmap_enter+0x1c6 sys/arch/amd64/amd64/pmap.c:2716
#4 uvm_fault_upper_lookup+0x2b2
#5 uvm_fault+0x129 sys/uvm/uvm_fault.c:605
#6 upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
#7 usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
#8 recall_trap+0x8
Process 17517 (syz-executor.5) thread 0xffff80002a24f730 (468841)
Process 48217 (syz-executor.3) thread 0xffff80002a25a568 (137368)
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10235 6463K 7302K 166960K 37441 0
pcb 20 15K 17K 166960K 3750 0
rtable 230 19K 21K 166960K 10039 0
pf 60 13K 15K 166960K 1277 0
ifaddr 62 24K 29K 166960K 1506 0
ifgroup 111 4K 4K 166960K 2071 0
sysctl 4 1K 2K 166960K 63 0
counters 94 40K 41K 166960K 1286 0
ioctlops 0 0K 4K 166960K 2834 0
iov 1 2K 28K 166960K 1404 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1422 89K 90K 166960K 18971 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 3 156K 260K 166960K 561 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 1907 0
dirhash 12 2K 3K 166960K 678 0
ACPI 1697 195K 286K 166960K 12548 0
file desc 19 69K 109K 166960K 23509 0
sigio 0 0K 0K 166960K 446 0
proc 54 55K 128K 166960K 9132 0
subproc 117 7K 10K 166960K 3649 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 3461 0
in_multi 73 5K 7K 166960K 3590 0
ether_multi 1 0K 0K 166960K 297 0
mrt 1 0K 0K 166960K 73 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 127 572K 572K 166960K 127 0
exec 0 0K 1K 166960K 6324 0
pfkey data 0 0K 1K 166960K 29 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 308 122K 138K 166960K 196869 0
UVM aobj 820 66K 66K 166960K 906 0
pinsyscall 34 68K 100K 166960K 31374 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 1K 166960K 1484 0
NDP 26 0K 1K 166960K 1146 0
temp 78 6808K 14746K 166960K 1017524 0
kqueue 7 12K 30K 166960K 3519 0
SYN cache 2 16K 16K 166960K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 24 0 0 1 0 1 1 0 8 0
rtpcb 120 2821 0 2819 6 5 1 3 0 8 0
rtentry 112 3522 0 3441 7 3 4 4 0 8 0
unpcb 144 18717 0 18705 25 24 1 6 0 8 0
syncache 336 13 0 13 4 4 0 1 0 8 0
sackhl 24 2 79 2 2 2 0 1 0 8 0
tcpqe 32 24 0 24 1 1 0 1 0 8 0
tcpcb 808 6495 0 6486 12 10 2 2 0 8 1
arp 120 663 0 643 1 0 1 1 0 8 0
inpcb 384 24081 0 24066 39 37 2 8 0 8 0
nd6 136 963 0 943 6 5 1 2 0 8 0
pkpcb 40 168 0 168 19 18 1 1 0 8 1
kcovpl 48 280 0 271 1 0 1 1 0 8 0
ppxss 1168 230 0 230 19 18 1 1 0 8 1
pffrag 232 154 0 146 2 1 1 2 0 482 0
pffrnode 88 135 0 129 1 0 1 1 0 8 0
pffrent 40 1995 0 1987 2 1 1 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 1323 0 1155 2 0 2 2 0 8 0
pfstkey 128 1323 0 1155 7 0 7 7 0 8 0
pfstate 376 1323 0 1155 21 2 19 21 0 8 0
pfrule 1344 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 15 0 13 11 9 2 3 0 8 0
art_heap4 256 12634 0 12309 74 48 26 31 0 8 0
art_table 32 12649 0 12322 5 1 4 4 0 8 0
art_node 16 3454 0 3383 1 0 1 1 0 8 0
sysvmsgpl 40 17 0 7 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 1905 0 1895 1 0 1 1 0 8 0
shmpl 112 903 0 86 24 0 24 24 0 8 0
dirhash 1024 461 0 444 3 0 3 3 0 8 0
dino2pl 256 40110 0 38420 106 0 106 106 0 8 0
ffsino 272 40110 0 38420 115 1 114 114 0 8 0
nchpl 144 75097 0 74495 66 40 26 66 0 8 0
uvmvnodes 80 15189 0 0 310 0 310 310 0 8 0
vnodes 216 15189 0 0 844 0 844 844 0 8 0
namei 1024 276093 0 276093 9 8 1 2 0 8 1
percpumem 16 657 0 596 1 0 1 1 0 8 0
vcpupl 3904 49 0 6 6 0 6 6 0 8 0
vmpool 696 169 0 126 7 2 5 5 0 8 0
kstatmem 264 1244 0 1192 7 2 5 5 0 8 0
scsiplug 72 58 0 58 24 24 0 1 0 8 0
scxspl 216 290804 0 290804 60 56 4 8 1 8 4
plimitpl 152 4572 0 4554 1 0 1 1 0 8 0
sigapl 424 23344 0 23297 10 2 8 9 0 8 0
futexpl 64 383931 0 383927 10 9 1 1 0 8 0
knotepl 120 1103 0 0 19 0 19 19 0 8 0
kqueuepl 216 8015 0 8008 17 16 1 5 0 8 0
pipepl 320 3882 0 3851 14 11 3 4 0 8 0
fdescpl 496 23270 0 23243 9 5 4 5 0 8 0
filepl 152 170145 0 169886 39 27 12 17 0 8 0
lockfpl 104 8134 0 8133 1 0 1 1 0 8 0
lockfspl 48 3628 0 3627 1 0 1 1 0 8 0
sessionpl 144 278 0 262 1 0 1 1 0 8 0
pgrppl 48 575 0 559 1 0 1 1 0 8 0
ucredpl 104 31714 0 31686 1 0 1 1 0 8 0
zombiepl 144 23299 0 23297 2 1 1 1 0 8 0
processpl 1144 23344 0 23297 6 1 5 6 0 8 0
procpl 656 47096 0 47026 10 2 8 9 0 8 0
srpgc 96 254 0 254 21 20 1 1 0 8 1
sosppl 168 73 0 73 23 23 0 1 0 8 0
sockpl 664 46089 0 46059 69 65 4 14 0 8 1
mcl64k 65536 65 0 0 4 1 3 3 0 8 0
mcl16k 16384 27 0 0 3 0 3 3 0 8 0
mcl12k 12288 10 0 0 1 0 1 1 0 8 0
mcl9k 9216 7 0 0 1 0 1 1 0 8 0
mcl8k 8192 16 0 0 2 0 2 2 0 8 0
mcl4k 4096 7 0 0 1 0 1 1 0 8 0
mcl2k2 2112 5 0 0 1 0 1 1 0 8 0
mcl2k 2048 634 0 0 55 20 35 55 0 8 0
mtagpl 96 49 0 0 1 0 1 1 0 8 0
mbufpl 256 935 0 0 30 0 30 30 0 8 0
bufpl 280 84058 0 68869 1086 0 1086 1086 0 8 0
anonpl 24 2730964 0 2724129 162 88 74 101 0 186 0
amapchunkpl 152 618394 0 617687 112 79 33 52 0 158 0
amappl16 200 66004 0 65850 135 114 21 34 0 8 3
amappl15 192 9 0 9 2 2 0 1 0 8 0
amappl14 184 1048 0 1035 2 1 1 2 0 8 0
amappl13 176 38 0 38 3 3 0 1 0 8 0
amappl12 168 27731 0 27697 3 0 3 3 0 8 0
amappl11 160 349 0 337 1 0 1 1 0 8 0
amappl10 152 717 0 710 1 0 1 1 0 8 0
amappl9 144 282 0 281 1 0 1 1 0 8 0
amappl8 136 1947 0 1904 3 0 3 3 0 8 0
amappl7 128 178 0 162 1 0 1 1 0 8 0
amappl6 120 3274 0 3261 2 1 1 2 0 8 0
amappl5 112 1159 0 1150 1 0 1 1 0 8 0
amappl4 104 2576 0 2543 2 0 2 2 0 8 0
amappl3 96 117530 0 117439 3 0 3 3 0 8 0
amappl2 88 24507 0 24447 4 2 2 4 0 8 0
amappl1 80 96913 0 96488 23 10 13 22 0 8 0
amappl 88 192696 0 192493 6 0 6 6 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
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 72 905 0 86 15 0 15 15 0 8 0
uaddrrnd 24 23439 0 23369 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 23439 0 23369 1 0 1 1 0 8 0
vmmpekpl 168 151356 0 151293 4 0 4 4 0 8 0
vmmpepl 168 1425450 0 1423626 292 197 95 116 0 357 0
vmsppl 440 23438 0 23369 9 1 8 9 0 8 0
rwobjpl 56 326643 0 309585 268 23 245 245 0 8 1
pdppl 4096 46885 0 46781 522 417 105 115 0 8 1
pvpl 32 46545 0 0 376 0 376 376 0 265 0
pmappl 248 23438 0 23369 6 1 5 5 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 973 0 538 13 0 13 13 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7204b683e840, count: -1
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp
x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x2e sys/arch/amd64/amd64/bus_space.c:666
acpitimer_delay(1) at acpitimer_delay+0x12b acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline]
acpitimer_delay(1) at acpitimer_delay+0x12b sys/dev/acpi/acpitimer.c:125
comcnputc(800,61) at comcnputc+0x1d7 sys/dev/ic/com.c:1269
cnputc(61) at cnputc+0x4f sys/dev/cons.c:218
db_putchar(61) at db_putchar+0x3eb sys/ddb/db_output.c:155
kprintf() at kprintf+0x21c1 sys/kern/subr_prf.c:1064
db_printf(ffffffff828fec8b) at db_printf+0x89 sys/kern/subr_prf.c:498
panic(ffffffff8295f3e7) at panic+0xdb sys/kern/subr_prf.c:216
__assert(ffffffff8291343a,ffffffff828b3717,90,ffffffff82913941) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd800715e760,fffffd806b3e2250,1c89d000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd806b3e2250,1c89d000,0,3) at uvm_pagealloc+0x194 sys/uvm/uvm_page.c:912
end trace frame: 0xffff800035965b30, count: 0
ddb{1}> trace
x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x2e sys/arch/amd64/amd64/bus_space.c:666
acpitimer_delay(1) at acpitimer_delay+0x12b acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline]
acpitimer_delay(1) at acpitimer_delay+0x12b sys/dev/acpi/acpitimer.c:125
comcnputc(800,61) at comcnputc+0x1d7 sys/dev/ic/com.c:1269
cnputc(61) at cnputc+0x4f sys/dev/cons.c:218
db_putchar(61) at db_putchar+0x3eb sys/ddb/db_output.c:155
kprintf() at kprintf+0x21c1 sys/kern/subr_prf.c:1064
db_printf(ffffffff828fec8b) at db_printf+0x89 sys/kern/subr_prf.c:498
panic(ffffffff8295f3e7) at panic+0xdb sys/kern/subr_prf.c:216
__assert(ffffffff8291343a,ffffffff828b3717,90,ffffffff82913941) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd800715e760,fffffd806b3e2250,1c89d000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd806b3e2250,1c89d000,0,3) at uvm_pagealloc+0x194 sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd806b3e2200,72277d0fa000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215
pmap_enter(fffffd806b3e2200,72277d0fa000,4d717000,3,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722
uvm_fault_upper_lookup(ffff800035965de0,ffff800035965e18,ffff800035965ce0,ffff800035965d60) at uvm_fault_upper_lookup+0x2b2
uvm_fault(fffffd806acc8dd0,72277d0fb000,0,2) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605
upageflttrap(ffff800035965f60,72277d0fb5ac) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800035965f60) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x72277d0fb590, count: -21
---
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If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 00aa7573f64b asn1object: zap trailing whitespace
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=145896ae980000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=044acb4774a303715002
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/bfe757559839/disk-00aa7573.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/fdab2357f837/bsd-00aa7573.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/0db8d7b318dc/kernel-00aa7573.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+044acb...@syzkaller.appspotmail.com
panic: kWerAneRNlI NdGi:a gnSoPLs NOtT LiOcW EasRsEeDr tOioN nSY S"CduALLp e 13==7 N U-1LL2"3 28fa69il2e9d6: fEXiIle T "0/ s9y
zkaStopped at savectx+0xae: movl $0,%gs:0x680
TID PID UID PRFLAGS PFLAGS CPU COMMAND
468841 17517 0 0x8000000 0 1 syz-executor.5
*137368 48217 0 0x8000002 0 0 syz-executor.3
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7204b683e840, count: 14
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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu1: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
ddb{0}> trace
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7204b683e840, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800039e29210
rbx 0
rdx 0
rcx 0xffff80002a25a568
rax 0x3d
r8 0xffff800039e29140
r9 0xffffffffffffffff
r10 0x2556a6bf931ae79e
r11 0x2e013de206850189
r12 0
r13 0
r14 0xffff80002a25a568
r15 0
rip 0xffffffff815483ee savectx+0xae
cs 0x8
rflags 0x46
rsp 0xffff800039e29190
ss 0x10
savectx+0xae: movl $0,%gs:0x680
ddb{0}> show proc
PROC (syz-executor.3) tid=137368 pid=48217 tcnt=1 stat=onproc
flags process=8000002<EXEC> proc=0
runpri=17, usrpri=86, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a24f4a0,0xffff80002a24ef90
process=0xffff800038bcf5c8 user=0xffff800039e24000, vmspace=0xfffffd8070fd78a8
estcpu=36, cpticks=4, pctcpu=0.5, user=0, sys=2, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
27952 368593 7753 0 2 0x8000000 syz-executor.1
65070 74759 47483 0 2 0x8003000 syz-executor.0
17517 468841 72042 0 7 0x8000000 syz-executor.5
17517 131572 72042 0 3 0xc000080 netcon syz-executor.5
52917 421856 88469 0 3 0x8000080 nanoslp syz-executor.7
52917 11219 88469 0 3 0xc000080 netacc syz-executor.7
52917 34572 88469 0 3 0xc000080 fsleep syz-executor.7
61574 132650 48921 0 3 0x8000080 nanoslp syz-executor.2
61574 387628 48921 0 3 0xc000080 fsleep syz-executor.2
61574 348448 48921 0 3 0xc000080 kqread syz-executor.2
61574 33271 48921 0 3 0xc000080 fsleep syz-executor.2
93725 257643 30510 0 2 0x8000480 syz-executor.4
93725 51271 30510 0 3 0xc000080 fsleep syz-executor.4
93725 17557 30510 0 3 0xc000080 sbwait syz-executor.4
52780 129380 0 0 3 0x14200 acct acct
72042 494637 52585 0 2 0x8000482 syz-executor.5
30510 413988 52585 0 2 0x8000002 syz-executor.4
*48217 137368 52585 0 7 0x8000002 syz-executor.3
86078 297792 52585 0 3 0x8000082 wait syz-executor.6
88469 389527 52585 0 2 0x8000002 syz-executor.7
48921 313377 52585 0 3 0x8000082 nanoslp syz-executor.2
7753 450048 52585 0 3 0x8000082 nanoslp syz-executor.1
47483 335291 52585 0 3 0x8000082 nanoslp syz-executor.0
70132 76085 1 0 3 0x18100083 ttyin getty
67420 400586 0 0 3 0x14200 bored sosplice
2284 150435 46569 0 3 0x18100082 netio arp
46569 433746 1 0 3 0x810008a sigsusp sh
52585 373275 40209 0 3 0x1a000082 wait syz-fuzzer
52585 76192 40209 0 3 0x1e000082 nanoslp syz-fuzzer
52585 183915 40209 0 3 0x1e000082 thrsleep syz-fuzzer
52585 485207 40209 0 3 0x1e000082 thrsleep syz-fuzzer
52585 160167 40209 0 3 0x1e000082 wait syz-fuzzer
52585 198570 40209 0 3 0x1e000082 wait syz-fuzzer
52585 372426 40209 0 3 0x1e000082 thrsleep syz-fuzzer
52585 84114 40209 0 3 0x1e000082 thrsleep syz-fuzzer
52585 14875 40209 0 3 0x1e000082 thrsleep syz-fuzzer
52585 110114 40209 0 3 0x1e000082 wait syz-fuzzer
52585 502362 40209 0 3 0x1e000082 thrsleep syz-fuzzer
52585 426870 40209 0 3 0x1e000082 wait syz-fuzzer
52585 409474 40209 0 3 0x1e000082 wait syz-fuzzer
52585 367010 40209 0 3 0x1e000082 wait syz-fuzzer
52585 169131 40209 0 3 0x1e000082 kqread syz-fuzzer
52585 9318 40209 0 3 0x1e000082 wait syz-fuzzer
40209 405887 38732 0 3 0x810008a sigsusp ksh
38732 29974 43809 0 3 0x1800009a kqread sshd
43809 196019 1 0 3 0x18000088 kqread sshd
12234 198133 29633 73 3 0x19100090 kqread syslogd
29633 15910 1 0 3 0x18100082 sbwait syslogd
24877 412118 1 0 3 0x18100080 kqread resolvd
63133 186573 0 0 3 0x14200 bored smr
80136 50862 0 0 2 0x14200 zerothread
8592 199591 0 0 3 0x14200 aiodoned aiodoned
17728 89372 0 0 3 0x14200 syncer update
61841 421116 0 0 3 0x14200 cleaner cleaner
83646 76200 0 0 3 0x14200 reaper reaper
5690 443989 0 0 3 0x14200 pgdaemon pagedaemon
93132 498578 0 0 3 0x14200 bored viomb
73426 255201 0 0 3 0x40014200 acpi0 acpi0
19162 523016 0 0 3 0x40014200 idle1
66630 54973 0 0 3 0x14200 bored softnet3
97691 279485 0 0 3 0x14200 bored softnet2
63204 62765 0 0 3 0x14200 bored softnet1
53979 215791 0 0 3 0x14200 bored softnet0
65577 95421 0 0 3 0x14200 bored systqmp
8792 52208 0 0 3 0x14200 bored systq
86152 61029 0 0 3 0x14200 tmoslp softclockmp
25683 147498 0 0 3 0x40014200 tmoslp softclock
13850 448197 0 0 3 0x40014200 idle0
1 297045 0 0 3 0x8080082 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &iopl->mtx r = 0 (0xffff8000000a3088)
#0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x446 sys/kern/subr_witness.c:1157
#1 mtx_enter_try+0x103
#2 mtx_enter+0x4e sys/kern/kern_lock.c:266
#3 scsi_xsh_runqueue+0x90 sys/scsi/scsi_base.c:585
#4 scsi_xsh_add+0xcd sys/scsi/scsi_base.c:538
#5 sdstrategy+0x187 sys/scsi/sd.c:567
#6 spec_strategy+0x3c sys/kern/spec_vnops.c:448
#7 VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:634
#8 bwrite+0x1d3 sys/kern/vfs_bio.c:757
#9 ffs_update+0x27f sys/ufs/ffs/ffs_inode.c:111
#10 ffs_truncate+0x987
#11 ufs_rmdir+0x295 sys/ufs/ufs/ufs_vnops.c:1265
#12 VOP_RMDIR+0x12a sys/kern/vfs_vops.c:413
#13 dounlinkat+0x20e sys/kern/vfs_syscalls.c:1889
#14 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
#14 syscall+0x854 sys/arch/amd64/amd64/trap.c:577
#15 Xsyscall+0x128
CPU 1:
exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806b3e2210)
#0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x446 sys/kern/subr_witness.c:1157
#1 mtx_enter_try+0x103
#2 mtx_enter+0x4e sys/kern/kern_lock.c:266
#3 pmap_enter+0x1c6 rcr3 machine/cpufunc.h:139 [inline]
#3 pmap_enter+0x1c6 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline]
#3 pmap_enter+0x1c6 sys/arch/amd64/amd64/pmap.c:2716
#4 uvm_fault_upper_lookup+0x2b2
#5 uvm_fault+0x129 sys/uvm/uvm_fault.c:605
#6 upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
#7 usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
#8 recall_trap+0x8
Process 17517 (syz-executor.5) thread 0xffff80002a24f730 (468841)
Process 48217 (syz-executor.3) thread 0xffff80002a25a568 (137368)
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10235 6463K 7302K 166960K 37441 0
pcb 20 15K 17K 166960K 3750 0
rtable 230 19K 21K 166960K 10039 0
pf 60 13K 15K 166960K 1277 0
ifaddr 62 24K 29K 166960K 1506 0
ifgroup 111 4K 4K 166960K 2071 0
sysctl 4 1K 2K 166960K 63 0
counters 94 40K 41K 166960K 1286 0
ioctlops 0 0K 4K 166960K 2834 0
iov 1 2K 28K 166960K 1404 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1422 89K 90K 166960K 18971 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 3 156K 260K 166960K 561 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 1907 0
dirhash 12 2K 3K 166960K 678 0
ACPI 1697 195K 286K 166960K 12548 0
file desc 19 69K 109K 166960K 23509 0
sigio 0 0K 0K 166960K 446 0
proc 54 55K 128K 166960K 9132 0
subproc 117 7K 10K 166960K 3649 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 3461 0
in_multi 73 5K 7K 166960K 3590 0
ether_multi 1 0K 0K 166960K 297 0
mrt 1 0K 0K 166960K 73 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 127 572K 572K 166960K 127 0
exec 0 0K 1K 166960K 6324 0
pfkey data 0 0K 1K 166960K 29 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 308 122K 138K 166960K 196869 0
UVM aobj 820 66K 66K 166960K 906 0
pinsyscall 34 68K 100K 166960K 31374 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 1K 166960K 1484 0
NDP 26 0K 1K 166960K 1146 0
temp 78 6808K 14746K 166960K 1017524 0
kqueue 7 12K 30K 166960K 3519 0
SYN cache 2 16K 16K 166960K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 24 0 0 1 0 1 1 0 8 0
rtpcb 120 2821 0 2819 6 5 1 3 0 8 0
rtentry 112 3522 0 3441 7 3 4 4 0 8 0
unpcb 144 18717 0 18705 25 24 1 6 0 8 0
syncache 336 13 0 13 4 4 0 1 0 8 0
sackhl 24 2 79 2 2 2 0 1 0 8 0
tcpqe 32 24 0 24 1 1 0 1 0 8 0
tcpcb 808 6495 0 6486 12 10 2 2 0 8 1
arp 120 663 0 643 1 0 1 1 0 8 0
inpcb 384 24081 0 24066 39 37 2 8 0 8 0
nd6 136 963 0 943 6 5 1 2 0 8 0
pkpcb 40 168 0 168 19 18 1 1 0 8 1
kcovpl 48 280 0 271 1 0 1 1 0 8 0
ppxss 1168 230 0 230 19 18 1 1 0 8 1
pffrag 232 154 0 146 2 1 1 2 0 482 0
pffrnode 88 135 0 129 1 0 1 1 0 8 0
pffrent 40 1995 0 1987 2 1 1 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 1323 0 1155 2 0 2 2 0 8 0
pfstkey 128 1323 0 1155 7 0 7 7 0 8 0
pfstate 376 1323 0 1155 21 2 19 21 0 8 0
pfrule 1344 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 15 0 13 11 9 2 3 0 8 0
art_heap4 256 12634 0 12309 74 48 26 31 0 8 0
art_table 32 12649 0 12322 5 1 4 4 0 8 0
art_node 16 3454 0 3383 1 0 1 1 0 8 0
sysvmsgpl 40 17 0 7 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 1905 0 1895 1 0 1 1 0 8 0
shmpl 112 903 0 86 24 0 24 24 0 8 0
dirhash 1024 461 0 444 3 0 3 3 0 8 0
dino2pl 256 40110 0 38420 106 0 106 106 0 8 0
ffsino 272 40110 0 38420 115 1 114 114 0 8 0
nchpl 144 75097 0 74495 66 40 26 66 0 8 0
uvmvnodes 80 15189 0 0 310 0 310 310 0 8 0
vnodes 216 15189 0 0 844 0 844 844 0 8 0
namei 1024 276093 0 276093 9 8 1 2 0 8 1
percpumem 16 657 0 596 1 0 1 1 0 8 0
vcpupl 3904 49 0 6 6 0 6 6 0 8 0
vmpool 696 169 0 126 7 2 5 5 0 8 0
kstatmem 264 1244 0 1192 7 2 5 5 0 8 0
scsiplug 72 58 0 58 24 24 0 1 0 8 0
scxspl 216 290804 0 290804 60 56 4 8 1 8 4
plimitpl 152 4572 0 4554 1 0 1 1 0 8 0
sigapl 424 23344 0 23297 10 2 8 9 0 8 0
futexpl 64 383931 0 383927 10 9 1 1 0 8 0
knotepl 120 1103 0 0 19 0 19 19 0 8 0
kqueuepl 216 8015 0 8008 17 16 1 5 0 8 0
pipepl 320 3882 0 3851 14 11 3 4 0 8 0
fdescpl 496 23270 0 23243 9 5 4 5 0 8 0
filepl 152 170145 0 169886 39 27 12 17 0 8 0
lockfpl 104 8134 0 8133 1 0 1 1 0 8 0
lockfspl 48 3628 0 3627 1 0 1 1 0 8 0
sessionpl 144 278 0 262 1 0 1 1 0 8 0
pgrppl 48 575 0 559 1 0 1 1 0 8 0
ucredpl 104 31714 0 31686 1 0 1 1 0 8 0
zombiepl 144 23299 0 23297 2 1 1 1 0 8 0
processpl 1144 23344 0 23297 6 1 5 6 0 8 0
procpl 656 47096 0 47026 10 2 8 9 0 8 0
srpgc 96 254 0 254 21 20 1 1 0 8 1
sosppl 168 73 0 73 23 23 0 1 0 8 0
sockpl 664 46089 0 46059 69 65 4 14 0 8 1
mcl64k 65536 65 0 0 4 1 3 3 0 8 0
mcl16k 16384 27 0 0 3 0 3 3 0 8 0
mcl12k 12288 10 0 0 1 0 1 1 0 8 0
mcl9k 9216 7 0 0 1 0 1 1 0 8 0
mcl8k 8192 16 0 0 2 0 2 2 0 8 0
mcl4k 4096 7 0 0 1 0 1 1 0 8 0
mcl2k2 2112 5 0 0 1 0 1 1 0 8 0
mcl2k 2048 634 0 0 55 20 35 55 0 8 0
mtagpl 96 49 0 0 1 0 1 1 0 8 0
mbufpl 256 935 0 0 30 0 30 30 0 8 0
bufpl 280 84058 0 68869 1086 0 1086 1086 0 8 0
anonpl 24 2730964 0 2724129 162 88 74 101 0 186 0
amapchunkpl 152 618394 0 617687 112 79 33 52 0 158 0
amappl16 200 66004 0 65850 135 114 21 34 0 8 3
amappl15 192 9 0 9 2 2 0 1 0 8 0
amappl14 184 1048 0 1035 2 1 1 2 0 8 0
amappl13 176 38 0 38 3 3 0 1 0 8 0
amappl12 168 27731 0 27697 3 0 3 3 0 8 0
amappl11 160 349 0 337 1 0 1 1 0 8 0
amappl10 152 717 0 710 1 0 1 1 0 8 0
amappl9 144 282 0 281 1 0 1 1 0 8 0
amappl8 136 1947 0 1904 3 0 3 3 0 8 0
amappl7 128 178 0 162 1 0 1 1 0 8 0
amappl6 120 3274 0 3261 2 1 1 2 0 8 0
amappl5 112 1159 0 1150 1 0 1 1 0 8 0
amappl4 104 2576 0 2543 2 0 2 2 0 8 0
amappl3 96 117530 0 117439 3 0 3 3 0 8 0
amappl2 88 24507 0 24447 4 2 2 4 0 8 0
amappl1 80 96913 0 96488 23 10 13 22 0 8 0
amappl 88 192696 0 192493 6 0 6 6 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
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 72 905 0 86 15 0 15 15 0 8 0
uaddrrnd 24 23439 0 23369 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 23439 0 23369 1 0 1 1 0 8 0
vmmpekpl 168 151356 0 151293 4 0 4 4 0 8 0
vmmpepl 168 1425450 0 1423626 292 197 95 116 0 357 0
vmsppl 440 23438 0 23369 9 1 8 9 0 8 0
rwobjpl 56 326643 0 309585 268 23 245 245 0 8 1
pdppl 4096 46885 0 46781 522 417 105 115 0 8 1
pvpl 32 46545 0 0 376 0 376 376 0 265 0
pmappl 248 23438 0 23369 6 1 5 5 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 973 0 538 13 0 13 13 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7204b683e840, count: -1
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp
x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x2e sys/arch/amd64/amd64/bus_space.c:666
acpitimer_delay(1) at acpitimer_delay+0x12b acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline]
acpitimer_delay(1) at acpitimer_delay+0x12b sys/dev/acpi/acpitimer.c:125
comcnputc(800,61) at comcnputc+0x1d7 sys/dev/ic/com.c:1269
cnputc(61) at cnputc+0x4f sys/dev/cons.c:218
db_putchar(61) at db_putchar+0x3eb sys/ddb/db_output.c:155
kprintf() at kprintf+0x21c1 sys/kern/subr_prf.c:1064
db_printf(ffffffff828fec8b) at db_printf+0x89 sys/kern/subr_prf.c:498
panic(ffffffff8295f3e7) at panic+0xdb sys/kern/subr_prf.c:216
__assert(ffffffff8291343a,ffffffff828b3717,90,ffffffff82913941) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd800715e760,fffffd806b3e2250,1c89d000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd806b3e2250,1c89d000,0,3) at uvm_pagealloc+0x194 sys/uvm/uvm_page.c:912
end trace frame: 0xffff800035965b30, count: 0
ddb{1}> trace
x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x2e sys/arch/amd64/amd64/bus_space.c:666
acpitimer_delay(1) at acpitimer_delay+0x12b acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline]
acpitimer_delay(1) at acpitimer_delay+0x12b sys/dev/acpi/acpitimer.c:125
comcnputc(800,61) at comcnputc+0x1d7 sys/dev/ic/com.c:1269
cnputc(61) at cnputc+0x4f sys/dev/cons.c:218
db_putchar(61) at db_putchar+0x3eb sys/ddb/db_output.c:155
kprintf() at kprintf+0x21c1 sys/kern/subr_prf.c:1064
db_printf(ffffffff828fec8b) at db_printf+0x89 sys/kern/subr_prf.c:498
panic(ffffffff8295f3e7) at panic+0xdb sys/kern/subr_prf.c:216
__assert(ffffffff8291343a,ffffffff828b3717,90,ffffffff82913941) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd800715e760,fffffd806b3e2250,1c89d000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd806b3e2250,1c89d000,0,3) at uvm_pagealloc+0x194 sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd806b3e2200,72277d0fa000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215
pmap_enter(fffffd806b3e2200,72277d0fa000,4d717000,3,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722
uvm_fault_upper_lookup(ffff800035965de0,ffff800035965e18,ffff800035965ce0,ffff800035965d60) at uvm_fault_upper_lookup+0x2b2
uvm_fault(fffffd806acc8dd0,72277d0fb000,0,2) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605
upageflttrap(ffff800035965f60,72277d0fb5ac) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800035965f60) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x72277d0fb590, count: -21
---
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If the report is already addressed, let syzbot know by replying with:
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If you want to overwrite report's subsystems, reply with:
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If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
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