panic: pooWAlR_NcIaNchG:e _SiPtLe mN_mOaT gLiOcW_EcRhEeDck O:N m bSuYfSpClA LcLp u1 37f r-e2e7 7li9s84t EmXodITi fi0 e9
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syzbot
May 6, 2020, 5:53:21 AM5/6/20
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 7237aa57 watch the /.profile and the /.cshrc in the root d..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=17c6e79c100000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=e592f97a9512027ae3cc
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+e592f9...@syzkaller.appspotmail.com
panic: pooWAlR_NcIaNchG:e _SiPtLe mN_mOaT gLiOcW_EcRhEeDck O:N m bSuYfSpClA LcLp u1 37f r-e2e7 7li9s84t EmXodITi fi0 e9d
:
iStopped at savectx+0xb1: movl $0,%gs:0x530
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 77767 48897 0 0x2 0 0 syz-executor.0
50457 72211 0 0x12 0 1 sshd
savectx() at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffbc210, 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
pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd807f01e200+16 0x0!=0xb5014d22ff887bee
ddb{0}> trace
savectx() at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffbc210, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800020f6bca0
rbx 0
rdx 0xffff800020e6c4e8
rcx 0
rax 0x39
r8 0xffffffff821c8b5f kprintf+0x16f
r9 0x1
r10 0x25
r11 0xd10a056e460f0e8d
r12 0
r13 0
r14 0xffff800020e6c4e8
r15 0
rip 0xffffffff818233f1 savectx+0xb1
cs 0x8
rflags 0x46
rsp 0xffff800020f6bc20
ss 0
savectx+0xb1: movl $0,%gs:0x530
ddb{0}> show proc
PROC (syz-executor.0) pid=77767 stat=onproc
flags process=2<EXEC,8ORPHAN> proc=0
pri=17, usrpri=55, nice=20
forw=0xffffffffffffffff, list=0xffff800020e6c278,0xffff800020e6d878
process=0xffff800020e807c0 user=0xffff800020f66000, vmspace=0xfffffd807efff8a0
estcpu=36, cpticks=1, pctcpu=0.5
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
50512 167209 98504 0 2 0x2 syz-executor.1
*48897 77767 98504 0 7 0x2 syz-executor.0
98504 227241 65329 0 3 0x82 kqread syz-fuzzer
98504 107387 65329 0 3 0x4000082 nanosleep syz-fuzzer
98504 122580 65329 0 2 0x4000002 syz-fuzzer
98504 11264 65329 0 3 0x4000082 thrsleep syz-fuzzer
98504 35990 65329 0 3 0x4000082 thrsleep syz-fuzzer
98504 122611 65329 0 3 0x4000082 thrsleep syz-fuzzer
98504 365520 65329 0 3 0x4000082 thrsleep syz-fuzzer
98504 72188 65329 0 3 0x4000082 thrsleep syz-fuzzer
98504 18475 65329 0 2 0x4000002 syz-fuzzer
98504 168260 65329 0 3 0x4000082 thrsleep syz-fuzzer
65329 33962 72211 0 3 0x10008a pause ksh
72211 50457 47637 0 7 0x12 sshd
61723 325157 1 0 3 0x100083 ttyin getty
47637 512749 1 0 3 0x80 select sshd
74872 16557 92117 74 3 0x100092 bpf pflogd
92117 506988 1 0 3 0x80 netio pflogd
12605 479372 34202 73 3 0x100090 kqread syslogd
34202 359198 1 0 3 0x100082 netio syslogd
59230 472847 1 77 3 0x100090 poll dhclient
14561 36172 1 0 3 0x80 poll dhclient
68219 330989 0 0 3 0x14200 bored smr
78537 406052 0 0 3 0x14200 pgzero zerothread
50124 29154 0 0 3 0x14200 aiodoned aiodoned
77634 128519 0 0 3 0x14200 syncer update
64420 501450 0 0 3 0x14200 cleaner cleaner
83249 327676 0 0 3 0x14200 reaper reaper
46078 378679 0 0 3 0x14200 pgdaemon pagedaemon
25060 180851 0 0 3 0x14200 bored crynlk
56883 281609 0 0 3 0x14200 bored crypto
19303 478646 0 0 3 0x40014200 acpi0 acpi0
7328 287339 0 0 3 0x40014200 idle1
66447 174876 0 0 3 0x14200 bored softnet
68569 127059 0 0 3 0x14200 bored systqmp
29195 258026 0 0 3 0x14200 bored systq
401 255300 0 0 3 0x40014200 bored softclock
12588 242902 0 0 3 0x40014200 idle0
1 45679 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &bq->bufq_mtx r = 0 (0xffff80000017ad68)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 bufq_peek+0x2c sys/kern/kern_bufq.c:219
#4 sdstart+0x421 sys/scsi/sd.c:734
#5 scsi_iopool_run+0x129 scsi_ioh_pending sys/scsi/scsi_base.c:404 [inline]
#5 scsi_iopool_run+0x129 sys/scsi/scsi_base.c:420
#6 scsi_xsh_runqueue+0x210 sys/scsi/scsi_base.c:596
#7 scsi_xsh_add+0xc9 sys/scsi/scsi_base.c:535
#8 sdstrategy+0x187 sys/scsi/sd.c:585
#9 spec_strategy+0x74 sys/kern/spec_vnops.c:468
#10 VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:712
#11 bwrite+0x1b9 sys/kern/vfs_bio.c:756
#12 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113
#13 ffs_truncate+0xc76
#14 ufs_rmdir+0x3af sys/ufs/ufs/ufs_vnops.c:1355
#15 VOP_RMDIR+0xf8 sys/kern/vfs_vops.c:474
#16 dounlinkat+0x14c sys/kern/vfs_syscalls.c:1886
#17 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#17 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#18 Xsyscall+0x128
Process 50512 (syz-executor.1) thread 0xffff800020e6d868 (167209)
exclusive rrwlock inode r = 0 (0xfffffd806b334a28)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140
#4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358
#5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392
#6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162
#7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450
#8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051
#9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#10 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806b3341a8)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:575
#5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419
#6 namei+0x63c sys/kern/vfs_lookup.c:249
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3036
#8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#9 Xsyscall+0x128
Process 48897 (syz-executor.0) thread 0xffff800020e6c4e8 (77767)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8266bb40)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 __mp_acquire_count+0x51 sys/kern/kern_lock.c:227
#2 mi_switch+0x392 sys/kern/sched_bsd.c:435
#3 sleep_finish+0x113 sys/kern/kern_synch.c:418
#4 sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline]
#4 sleep_finish_all+0x32 sys/kern/kern_synch.c:393
#5 tsleep+0x1cc sys/kern/kern_synch.c:155
#6 biowait+0xa6 sys/kern/vfs_bio.c:1256
#7 bwrite+0x1e4 sys/kern/vfs_bio.c:765
#8 ufs_dirremove+0x291
#9 ufs_rmdir+0x247 sys/ufs/ufs/ufs_vnops.c:1328
#10 VOP_RMDIR+0xf8 sys/kern/vfs_vops.c:474
#11 dounlinkat+0x14c sys/kern/vfs_syscalls.c:1886
#12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#13 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806b334808)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:575
#5 vget+0x1c8 sys/kern/vfs_subr.c:671
#6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1329
#8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90
#10 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568
#11 namei+0x63c sys/kern/vfs_lookup.c:249
#12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853
#13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806b3345e8)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:575
#5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419
#6 namei+0x63c sys/kern/vfs_lookup.c:249
#7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853
#8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#9 Xsyscall+0x128
exclusive mutex &bq->bufq_mtx r = 0 (0xffff80000017ad68)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 bufq_peek+0x2c sys/kern/kern_bufq.c:219
#4 sdstart+0x421 sys/scsi/sd.c:734
#5 scsi_iopool_run+0x129 scsi_ioh_pending sys/scsi/scsi_base.c:404 [inline]
#5 scsi_iopool_run+0x129 sys/scsi/scsi_base.c:420
#6 scsi_xsh_runqueue+0x210 sys/scsi/scsi_base.c:596
#7 scsi_xsh_add+0xc9 sys/scsi/scsi_base.c:535
#8 sdstrategy+0x187 sys/scsi/sd.c:585
#9 spec_strategy+0x74 sys/kern/spec_vnops.c:468
#10 VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:712
#11 bwrite+0x1b9 sys/kern/vfs_bio.c:756
#12 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113
#13 ffs_truncate+0xc76
#14 ufs_rmdir+0x3af sys/ufs/ufs/ufs_vnops.c:1355
#15 VOP_RMDIR+0xf8 sys/kern/vfs_vops.c:474
#16 dounlinkat+0x14c sys/kern/vfs_syscalls.c:1886
#17 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#17 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#18 Xsyscall+0x128
Process 72211 (sshd) thread 0xffff800020ede760 (50457)
exclusive rwlock netlock r = 0 (0xffffffff8252c6c8)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sosend+0x559 sys/kern/uipc_socket.c:537
#3 dofilewritev+0x1b6 sys/kern/sys_generic.c:365
#4 sys_write+0x83 sys/kern/sys_generic.c:285
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#6 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9489 6530K 6793K 78643K 10784 0
pcb 13 8K 8K 78643K 43 0
rtable 99 3K 3K 78643K 239 0
ifaddr 48 11K 12K 78643K 80 0
counters 43 33K 34K 78643K 53 0
ioctlops 0 0K 4K 78643K 1476 0
iov 0 0K 12K 78643K 35 0
mount 1 1K 1K 78643K 1 0
vnodes 1235 78K 78K 78643K 1291 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
VM map 2 1K 1K 78643K 2 0
sem 10 0K 0K 78643K 12 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 4 9K 25K 78643K 84 0
proc 61 63K 95K 78643K 440 0
subproc 32 2K 2K 78643K 34 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 3 0
in_multi 29 1K 2K 78643K 41 0
ether_multi 1 0K 0K 78643K 2 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 31 148K 148K 78643K 31 0
exec 0 0K 1K 78643K 211 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 125 23K 23K 78643K 1204 0
UVM aobj 2 2K 2K 78643K 2 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 8 0
NDP 7 0K 0K 78643K 17 0
temp 76 3037K 3101K 78643K 2207 0
kqueue 3 4K 7K 78643K 5 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 6 0 0 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 21 0 19 1 0 1 1 0 8 0
rtentry 112 49 0 8 2 0 2 2 0 8 0
unpcb 120 47 0 37 1 0 1 1 0 8 0
syncache 264 4 0 4 1 1 0 1 0 8 0
tcpcb 544 36 0 32 1 0 1 1 0 8 0
inpcb 280 133 0 126 2 0 2 2 0 8 1
nd6 48 7 0 3 1 0 1 1 0 8 0
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 17 0 0 1 0 1 1 0 8 0
pfstkey 112 17 0 0 1 0 1 1 0 8 0
pfstate 328 17 0 0 2 0 2 2 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 213 0 40 13 0 13 13 0 8 0
art_table 32 214 0 40 2 0 2 2 0 8 0
art_node 16 48 0 10 1 0 1 1 0 8 0
semupl 112 1 0 1 1 0 1 1 0 8 1
semapl 112 8 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1516 0 113 89 0 89 89 0 8 0
ffsino 272 1516 0 113 94 0 94 94 0 8 0
nchpl 144 1809 0 206 60 0 60 60 0 8 0
uvmvnodes 72 1617 0 0 30 0 30 30 0 8 0
vnodes 208 1617 0 0 86 0 86 86 0 8 0
namei 1024 4792 0 4791 1 0 1 1 0 8 0
percpumem 16 37 0 5 1 0 1 1 0 8 0
vcpupl 1984 1 0 0 1 0 1 1 0 8 0
vmpool 560 1 0 0 1 0 1 1 0 8 0
scxspl 192 4691 0 4691 8 1 7 7 0 8 7
plimitpl 152 17 0 9 1 0 1 1 0 8 0
sigapl 424 299 0 269 4 0 4 4 0 8 0
futexpl 56 998 0 998 1 0 1 1 0 8 1
knotepl 112 64 0 45 1 0 1 1 0 8 0
kqueuepl 144 14 0 12 1 0 1 1 0 8 0
pipelkpl 48 95 0 85 1 0 1 1 0 8 0
pipepl 120 190 0 171 1 0 1 1 0 8 0
fdescpl 496 284 0 269 3 0 3 3 0 8 0
filepl 152 1562 0 1462 5 0 5 5 0 8 1
lockfpl 104 47 0 46 1 0 1 1 0 8 0
lockfspl 48 21 0 20 1 0 1 1 0 8 0
sessionpl 112 18 0 7 1 0 1 1 0 8 0
pgrppl 48 18 0 7 1 0 1 1 0 8 0
ucredpl 96 88 0 79 1 0 1 1 0 8 0
zombiepl 144 269 0 269 1 0 1 1 0 8 1
processpl 984 299 0 269 5 0 5 5 0 8 1
procpl 624 423 0 384 4 0 4 4 0 8 1
sockpl 400 201 0 182 3 0 3 3 0 8 1
mcl12k 12288 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 1 0 0 1 0 1 1 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 141 0 0 17 0 17 17 0 8 0
mtagpl 80 5 0 0 1 0 1 1 0 8 0
mbufpl 256 167 0 0 10 0 10 10 0 8 0
bufpl 280 3353 0 133 230 0 230 230 0 8 0
anonpl 16 43457 0 29808 71 1 70 70 0 124 14
amapchunkpl 152 1427 0 1297 8 1 7 8 0 158 1
amappl16 192 1287 0 554 48 0 48 48 0 8 9
amappl15 184 28 0 26 1 0 1 1 0 8 0
amappl14 176 25 0 20 1 0 1 1 0 8 0
amappl13 168 26 0 25 1 0 1 1 0 8 0
amappl12 160 44 0 38 1 0 1 1 0 8 0
amappl11 152 55 0 38 1 0 1 1 0 8 0
amappl10 144 18 0 15 1 0 1 1 0 8 0
amappl9 136 385 0 382 1 0 1 1 0 8 0
amappl8 128 349 0 314 2 0 2 2 0 8 0
amappl7 120 126 0 115 1 0 1 1 0 8 0
amappl6 112 29 0 23 1 0 1 1 0 8 0
amappl5 104 187 0 172 1 0 1 1 0 8 0
amappl4 96 491 0 461 1 0 1 1 0 8 0
amappl3 88 104 0 97 1 0 1 1 0 8 0
amappl2 80 1301 0 1239 2 0 2 2 0 8 0
amappl1 72 16353 0 15930 23 9 14 18 0 8 4
amappl 80 670 0 628 2 0 2 2 0 84 0
dma4096 4096 1 0 1 1 1 0 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 64 1 0 0 1 0 1 1 0 8 0
uaddrrnd 24 285 0 269 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 285 0 269 1 0 1 1 0 8 0
vmmpekpl 168 6229 0 6197 2 0 2 2 0 8 0
vmmpepl 168 41556 0 39767 106 6 100 101 0 357 13
vmsppl 368 284 0 269 2 0 2 2 0 8 0
pdppl 4096 578 0 539 6 0 6 6 0 8 0
pvpl 32 147097 0 130914 170 0 170 170 0 265 37
pmappl 232 284 0 269 3 1 2 2 0 8 1
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 250 0 3 8 0 8 8 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
savectx() at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffbc210, count: -1
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020e00ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x3c sys/arch/amd64/amd64/bus_space.c:639
comcnputc(800,69) at comcnputc+0x1c8 sys/dev/ic/com.c:1260
cnputc(69) at cnputc+0x4c sys/dev/cons.c:239
kputchar(69,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343
kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700
panic(ffffffff821f88ca) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline]
panic(ffffffff821f88ca) at panic+0xf3 sys/kern/subr_prf.c:197
pool_cache_get(ffffffff82646178) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff82646178) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff82646178,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_copym(fffffd807c50b700,0,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd807c50b700,0,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
tcp_output(ffff800000a0a880) at tcp_output+0x15ba sys/netinet/tcp_output.c:673
tcp_usrreq(fffffd806eb34968,9,fffffd807c50b700,0,0,ffff800020ede760) at tcp_usrreq+0xa55
end trace frame: 0xffff800020ecfb80, count: 0
ddb{1}> trace
x86_ipi_db(ffff800020e00ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x3c sys/arch/amd64/amd64/bus_space.c:639
comcnputc(800,69) at comcnputc+0x1c8 sys/dev/ic/com.c:1260
cnputc(69) at cnputc+0x4c sys/dev/cons.c:239
kputchar(69,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343
kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700
panic(ffffffff821f88ca) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline]
panic(ffffffff821f88ca) at panic+0xf3 sys/kern/subr_prf.c:197
pool_cache_get(ffffffff82646178) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff82646178) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff82646178,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_copym(fffffd807c50b700,0,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd807c50b700,0,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
tcp_output(ffff800000a0a880) at tcp_output+0x15ba sys/netinet/tcp_output.c:673
tcp_usrreq(fffffd806eb34968,9,fffffd807c50b700,0,0,ffff800020ede760) at tcp_usrreq+0xa55
sosend(fffffd806eb34968,0,ffff800020ecfc48,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:549
dofilewritev(ffff800020ede760,4,ffff800020ecfc48,0,ffff800020ecfd30) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365
sys_write(ffff800020ede760,ffff800020ecfce0,ffff800020ecfd30) at sys_write+0x83 sys/kern/sys_generic.c:285
syscall(ffff800020ecfdb0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020ecfdb0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffcda60, count: -19
---
This bug 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 bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: 7237aa57 watch the /.profile and the /.cshrc in the root d..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=17c6e79c100000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=e592f97a9512027ae3cc
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+e592f9...@syzkaller.appspotmail.com
panic: pooWAlR_NcIaNchG:e _SiPtLe mN_mOaT gLiOcW_EcRhEeDck O:N m bSuYfSpClA LcLp u1 37f r-e2e7 7li9s84t EmXodITi fi0 e9d
:
iStopped at savectx+0xb1: movl $0,%gs:0x530
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 77767 48897 0 0x2 0 0 syz-executor.0
50457 72211 0 0x12 0 1 sshd
savectx() at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffbc210, 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
pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd807f01e200+16 0x0!=0xb5014d22ff887bee
ddb{0}> trace
savectx() at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffbc210, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800020f6bca0
rbx 0
rdx 0xffff800020e6c4e8
rcx 0
rax 0x39
r8 0xffffffff821c8b5f kprintf+0x16f
r9 0x1
r10 0x25
r11 0xd10a056e460f0e8d
r12 0
r13 0
r14 0xffff800020e6c4e8
r15 0
rip 0xffffffff818233f1 savectx+0xb1
cs 0x8
rflags 0x46
rsp 0xffff800020f6bc20
ss 0
savectx+0xb1: movl $0,%gs:0x530
ddb{0}> show proc
PROC (syz-executor.0) pid=77767 stat=onproc
flags process=2<EXEC,8ORPHAN> proc=0
pri=17, usrpri=55, nice=20
forw=0xffffffffffffffff, list=0xffff800020e6c278,0xffff800020e6d878
process=0xffff800020e807c0 user=0xffff800020f66000, vmspace=0xfffffd807efff8a0
estcpu=36, cpticks=1, pctcpu=0.5
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
50512 167209 98504 0 2 0x2 syz-executor.1
*48897 77767 98504 0 7 0x2 syz-executor.0
98504 227241 65329 0 3 0x82 kqread syz-fuzzer
98504 107387 65329 0 3 0x4000082 nanosleep syz-fuzzer
98504 122580 65329 0 2 0x4000002 syz-fuzzer
98504 11264 65329 0 3 0x4000082 thrsleep syz-fuzzer
98504 35990 65329 0 3 0x4000082 thrsleep syz-fuzzer
98504 122611 65329 0 3 0x4000082 thrsleep syz-fuzzer
98504 365520 65329 0 3 0x4000082 thrsleep syz-fuzzer
98504 72188 65329 0 3 0x4000082 thrsleep syz-fuzzer
98504 18475 65329 0 2 0x4000002 syz-fuzzer
98504 168260 65329 0 3 0x4000082 thrsleep syz-fuzzer
65329 33962 72211 0 3 0x10008a pause ksh
72211 50457 47637 0 7 0x12 sshd
61723 325157 1 0 3 0x100083 ttyin getty
47637 512749 1 0 3 0x80 select sshd
74872 16557 92117 74 3 0x100092 bpf pflogd
92117 506988 1 0 3 0x80 netio pflogd
12605 479372 34202 73 3 0x100090 kqread syslogd
34202 359198 1 0 3 0x100082 netio syslogd
59230 472847 1 77 3 0x100090 poll dhclient
14561 36172 1 0 3 0x80 poll dhclient
68219 330989 0 0 3 0x14200 bored smr
78537 406052 0 0 3 0x14200 pgzero zerothread
50124 29154 0 0 3 0x14200 aiodoned aiodoned
77634 128519 0 0 3 0x14200 syncer update
64420 501450 0 0 3 0x14200 cleaner cleaner
83249 327676 0 0 3 0x14200 reaper reaper
46078 378679 0 0 3 0x14200 pgdaemon pagedaemon
25060 180851 0 0 3 0x14200 bored crynlk
56883 281609 0 0 3 0x14200 bored crypto
19303 478646 0 0 3 0x40014200 acpi0 acpi0
7328 287339 0 0 3 0x40014200 idle1
66447 174876 0 0 3 0x14200 bored softnet
68569 127059 0 0 3 0x14200 bored systqmp
29195 258026 0 0 3 0x14200 bored systq
401 255300 0 0 3 0x40014200 bored softclock
12588 242902 0 0 3 0x40014200 idle0
1 45679 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &bq->bufq_mtx r = 0 (0xffff80000017ad68)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 bufq_peek+0x2c sys/kern/kern_bufq.c:219
#4 sdstart+0x421 sys/scsi/sd.c:734
#5 scsi_iopool_run+0x129 scsi_ioh_pending sys/scsi/scsi_base.c:404 [inline]
#5 scsi_iopool_run+0x129 sys/scsi/scsi_base.c:420
#6 scsi_xsh_runqueue+0x210 sys/scsi/scsi_base.c:596
#7 scsi_xsh_add+0xc9 sys/scsi/scsi_base.c:535
#8 sdstrategy+0x187 sys/scsi/sd.c:585
#9 spec_strategy+0x74 sys/kern/spec_vnops.c:468
#10 VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:712
#11 bwrite+0x1b9 sys/kern/vfs_bio.c:756
#12 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113
#13 ffs_truncate+0xc76
#14 ufs_rmdir+0x3af sys/ufs/ufs/ufs_vnops.c:1355
#15 VOP_RMDIR+0xf8 sys/kern/vfs_vops.c:474
#16 dounlinkat+0x14c sys/kern/vfs_syscalls.c:1886
#17 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#17 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#18 Xsyscall+0x128
Process 50512 (syz-executor.1) thread 0xffff800020e6d868 (167209)
exclusive rrwlock inode r = 0 (0xfffffd806b334a28)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140
#4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358
#5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392
#6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162
#7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450
#8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051
#9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#10 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806b3341a8)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:575
#5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419
#6 namei+0x63c sys/kern/vfs_lookup.c:249
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3036
#8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#9 Xsyscall+0x128
Process 48897 (syz-executor.0) thread 0xffff800020e6c4e8 (77767)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8266bb40)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 __mp_acquire_count+0x51 sys/kern/kern_lock.c:227
#2 mi_switch+0x392 sys/kern/sched_bsd.c:435
#3 sleep_finish+0x113 sys/kern/kern_synch.c:418
#4 sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline]
#4 sleep_finish_all+0x32 sys/kern/kern_synch.c:393
#5 tsleep+0x1cc sys/kern/kern_synch.c:155
#6 biowait+0xa6 sys/kern/vfs_bio.c:1256
#7 bwrite+0x1e4 sys/kern/vfs_bio.c:765
#8 ufs_dirremove+0x291
#9 ufs_rmdir+0x247 sys/ufs/ufs/ufs_vnops.c:1328
#10 VOP_RMDIR+0xf8 sys/kern/vfs_vops.c:474
#11 dounlinkat+0x14c sys/kern/vfs_syscalls.c:1886
#12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#13 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806b334808)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:575
#5 vget+0x1c8 sys/kern/vfs_subr.c:671
#6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1329
#8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90
#10 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568
#11 namei+0x63c sys/kern/vfs_lookup.c:249
#12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853
#13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806b3345e8)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:575
#5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419
#6 namei+0x63c sys/kern/vfs_lookup.c:249
#7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853
#8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#9 Xsyscall+0x128
exclusive mutex &bq->bufq_mtx r = 0 (0xffff80000017ad68)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 bufq_peek+0x2c sys/kern/kern_bufq.c:219
#4 sdstart+0x421 sys/scsi/sd.c:734
#5 scsi_iopool_run+0x129 scsi_ioh_pending sys/scsi/scsi_base.c:404 [inline]
#5 scsi_iopool_run+0x129 sys/scsi/scsi_base.c:420
#6 scsi_xsh_runqueue+0x210 sys/scsi/scsi_base.c:596
#7 scsi_xsh_add+0xc9 sys/scsi/scsi_base.c:535
#8 sdstrategy+0x187 sys/scsi/sd.c:585
#9 spec_strategy+0x74 sys/kern/spec_vnops.c:468
#10 VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:712
#11 bwrite+0x1b9 sys/kern/vfs_bio.c:756
#12 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113
#13 ffs_truncate+0xc76
#14 ufs_rmdir+0x3af sys/ufs/ufs/ufs_vnops.c:1355
#15 VOP_RMDIR+0xf8 sys/kern/vfs_vops.c:474
#16 dounlinkat+0x14c sys/kern/vfs_syscalls.c:1886
#17 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#17 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#18 Xsyscall+0x128
Process 72211 (sshd) thread 0xffff800020ede760 (50457)
exclusive rwlock netlock r = 0 (0xffffffff8252c6c8)
#0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sosend+0x559 sys/kern/uipc_socket.c:537
#3 dofilewritev+0x1b6 sys/kern/sys_generic.c:365
#4 sys_write+0x83 sys/kern/sys_generic.c:285
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#6 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9489 6530K 6793K 78643K 10784 0
pcb 13 8K 8K 78643K 43 0
rtable 99 3K 3K 78643K 239 0
ifaddr 48 11K 12K 78643K 80 0
counters 43 33K 34K 78643K 53 0
ioctlops 0 0K 4K 78643K 1476 0
iov 0 0K 12K 78643K 35 0
mount 1 1K 1K 78643K 1 0
vnodes 1235 78K 78K 78643K 1291 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
VM map 2 1K 1K 78643K 2 0
sem 10 0K 0K 78643K 12 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 4 9K 25K 78643K 84 0
proc 61 63K 95K 78643K 440 0
subproc 32 2K 2K 78643K 34 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 3 0
in_multi 29 1K 2K 78643K 41 0
ether_multi 1 0K 0K 78643K 2 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 31 148K 148K 78643K 31 0
exec 0 0K 1K 78643K 211 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 125 23K 23K 78643K 1204 0
UVM aobj 2 2K 2K 78643K 2 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 8 0
NDP 7 0K 0K 78643K 17 0
temp 76 3037K 3101K 78643K 2207 0
kqueue 3 4K 7K 78643K 5 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 6 0 0 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 21 0 19 1 0 1 1 0 8 0
rtentry 112 49 0 8 2 0 2 2 0 8 0
unpcb 120 47 0 37 1 0 1 1 0 8 0
syncache 264 4 0 4 1 1 0 1 0 8 0
tcpcb 544 36 0 32 1 0 1 1 0 8 0
inpcb 280 133 0 126 2 0 2 2 0 8 1
nd6 48 7 0 3 1 0 1 1 0 8 0
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 17 0 0 1 0 1 1 0 8 0
pfstkey 112 17 0 0 1 0 1 1 0 8 0
pfstate 328 17 0 0 2 0 2 2 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 213 0 40 13 0 13 13 0 8 0
art_table 32 214 0 40 2 0 2 2 0 8 0
art_node 16 48 0 10 1 0 1 1 0 8 0
semupl 112 1 0 1 1 0 1 1 0 8 1
semapl 112 8 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1516 0 113 89 0 89 89 0 8 0
ffsino 272 1516 0 113 94 0 94 94 0 8 0
nchpl 144 1809 0 206 60 0 60 60 0 8 0
uvmvnodes 72 1617 0 0 30 0 30 30 0 8 0
vnodes 208 1617 0 0 86 0 86 86 0 8 0
namei 1024 4792 0 4791 1 0 1 1 0 8 0
percpumem 16 37 0 5 1 0 1 1 0 8 0
vcpupl 1984 1 0 0 1 0 1 1 0 8 0
vmpool 560 1 0 0 1 0 1 1 0 8 0
scxspl 192 4691 0 4691 8 1 7 7 0 8 7
plimitpl 152 17 0 9 1 0 1 1 0 8 0
sigapl 424 299 0 269 4 0 4 4 0 8 0
futexpl 56 998 0 998 1 0 1 1 0 8 1
knotepl 112 64 0 45 1 0 1 1 0 8 0
kqueuepl 144 14 0 12 1 0 1 1 0 8 0
pipelkpl 48 95 0 85 1 0 1 1 0 8 0
pipepl 120 190 0 171 1 0 1 1 0 8 0
fdescpl 496 284 0 269 3 0 3 3 0 8 0
filepl 152 1562 0 1462 5 0 5 5 0 8 1
lockfpl 104 47 0 46 1 0 1 1 0 8 0
lockfspl 48 21 0 20 1 0 1 1 0 8 0
sessionpl 112 18 0 7 1 0 1 1 0 8 0
pgrppl 48 18 0 7 1 0 1 1 0 8 0
ucredpl 96 88 0 79 1 0 1 1 0 8 0
zombiepl 144 269 0 269 1 0 1 1 0 8 1
processpl 984 299 0 269 5 0 5 5 0 8 1
procpl 624 423 0 384 4 0 4 4 0 8 1
sockpl 400 201 0 182 3 0 3 3 0 8 1
mcl12k 12288 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 1 0 0 1 0 1 1 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 141 0 0 17 0 17 17 0 8 0
mtagpl 80 5 0 0 1 0 1 1 0 8 0
mbufpl 256 167 0 0 10 0 10 10 0 8 0
bufpl 280 3353 0 133 230 0 230 230 0 8 0
anonpl 16 43457 0 29808 71 1 70 70 0 124 14
amapchunkpl 152 1427 0 1297 8 1 7 8 0 158 1
amappl16 192 1287 0 554 48 0 48 48 0 8 9
amappl15 184 28 0 26 1 0 1 1 0 8 0
amappl14 176 25 0 20 1 0 1 1 0 8 0
amappl13 168 26 0 25 1 0 1 1 0 8 0
amappl12 160 44 0 38 1 0 1 1 0 8 0
amappl11 152 55 0 38 1 0 1 1 0 8 0
amappl10 144 18 0 15 1 0 1 1 0 8 0
amappl9 136 385 0 382 1 0 1 1 0 8 0
amappl8 128 349 0 314 2 0 2 2 0 8 0
amappl7 120 126 0 115 1 0 1 1 0 8 0
amappl6 112 29 0 23 1 0 1 1 0 8 0
amappl5 104 187 0 172 1 0 1 1 0 8 0
amappl4 96 491 0 461 1 0 1 1 0 8 0
amappl3 88 104 0 97 1 0 1 1 0 8 0
amappl2 80 1301 0 1239 2 0 2 2 0 8 0
amappl1 72 16353 0 15930 23 9 14 18 0 8 4
amappl 80 670 0 628 2 0 2 2 0 84 0
dma4096 4096 1 0 1 1 1 0 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 64 1 0 0 1 0 1 1 0 8 0
uaddrrnd 24 285 0 269 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 285 0 269 1 0 1 1 0 8 0
vmmpekpl 168 6229 0 6197 2 0 2 2 0 8 0
vmmpepl 168 41556 0 39767 106 6 100 101 0 357 13
vmsppl 368 284 0 269 2 0 2 2 0 8 0
pdppl 4096 578 0 539 6 0 6 6 0 8 0
pvpl 32 147097 0 130914 170 0 170 170 0 265 37
pmappl 232 284 0 269 3 1 2 2 0 8 1
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 250 0 3 8 0 8 8 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
savectx() at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffbc210, count: -1
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020e00ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x3c sys/arch/amd64/amd64/bus_space.c:639
comcnputc(800,69) at comcnputc+0x1c8 sys/dev/ic/com.c:1260
cnputc(69) at cnputc+0x4c sys/dev/cons.c:239
kputchar(69,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343
kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700
panic(ffffffff821f88ca) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline]
panic(ffffffff821f88ca) at panic+0xf3 sys/kern/subr_prf.c:197
pool_cache_get(ffffffff82646178) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff82646178) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff82646178,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_copym(fffffd807c50b700,0,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd807c50b700,0,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
tcp_output(ffff800000a0a880) at tcp_output+0x15ba sys/netinet/tcp_output.c:673
tcp_usrreq(fffffd806eb34968,9,fffffd807c50b700,0,0,ffff800020ede760) at tcp_usrreq+0xa55
end trace frame: 0xffff800020ecfb80, count: 0
ddb{1}> trace
x86_ipi_db(ffff800020e00ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x3c sys/arch/amd64/amd64/bus_space.c:639
comcnputc(800,69) at comcnputc+0x1c8 sys/dev/ic/com.c:1260
cnputc(69) at cnputc+0x4c sys/dev/cons.c:239
kputchar(69,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343
kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700
panic(ffffffff821f88ca) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline]
panic(ffffffff821f88ca) at panic+0xf3 sys/kern/subr_prf.c:197
pool_cache_get(ffffffff82646178) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff82646178) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff82646178,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_copym(fffffd807c50b700,0,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd807c50b700,0,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
tcp_output(ffff800000a0a880) at tcp_output+0x15ba sys/netinet/tcp_output.c:673
tcp_usrreq(fffffd806eb34968,9,fffffd807c50b700,0,0,ffff800020ede760) at tcp_usrreq+0xa55
sosend(fffffd806eb34968,0,ffff800020ecfc48,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:549
dofilewritev(ffff800020ede760,4,ffff800020ecfc48,0,ffff800020ecfd30) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365
sys_write(ffff800020ede760,ffff800020ecfce0,ffff800020ecfd30) at sys_write+0x83 sys/kern/sys_generic.c:285
syscall(ffff800020ecfdb0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020ecfdb0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffcda60, count: -19
---
This bug is generated by a bot. It may contain errors.
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Anton Lindqvist
May 6, 2020, 7:08:29 AM5/6/20
to syzbot, syzkaller-o...@googlegroups.com
#syz dup: pool: cpu free list modified: mbufpl
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