panic: poWoARlN_IcNaGc:h eS_iPtL eNmO_Tm aLOgWiEcR_cEDh eOcNk : SYmSbCufApLlL c1p0u -f2r0ee58 2li4s EtX ImTo di0 fi9
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syzbot
Jul 16, 2020, 6:46:24 AM7/16/20
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: c4e156dd Userland timecounter implementation for arm64.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1260d6b3100000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=6069bccee4f8b4caa7b3
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6069bc...@syzkaller.appspotmail.com
" "" "" "" "panic: poWoARlN_IcNaGc:h eS_iPtL eNmO_Tm aLOgWiEcR_cEDh eOcNk : SYmSbCufApLlL c1p0u -f2r0ee58 2li4s EtX ImTo di0 fi9
e
d:Stopped at savectx+0xb1: movl $0,%gs:0x530
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 74615 13810 0 0x2 0 0 syz-executor.1
60337 20185 0 0x12 0 1 sshd
savectx() at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffce0b0, 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 0xfffffd8067295200+16 0x0!=0x13924ee2958ede84
ddb{0}> trace
savectx() at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffce0b0, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800023104550
rbx 0
rdx 0x8b
rcx 0x2
rax 0x38
r8 0xffffffff817fa50f kprintf+0x16f
r9 0x1
r10 0x2
r11 0xfce5d92460e99143
r12 0
r13 0
r14 0xffff800020e0aae8
r15 0
rip 0xffffffff81f323f1 savectx+0xb1
cs 0x8
rflags 0x46
rsp 0xffff8000231044d0
ss 0x10
savectx+0xb1: movl $0,%gs:0x530
ddb{0}> show proc
PROC (syz-executor.1) pid=74615 stat=onproc
flags process=2<EXEC,8ORPHAN> proc=0
pri=17, usrpri=80, nice=20
forw=0xffffffffffffffff, list=0xffff800020ddc278,0xffff800020e0a888
process=0xffff800020df07d0 user=0xffff8000230ff000, vmspace=0xfffffd807f000000
estcpu=36, cpticks=4, pctcpu=0.25
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
56210 226072 5367 0 3 0x80 nanosleep syz-executor.0
56210 393473 5367 0 3 0x4000080 ttyout syz-executor.0
56210 42616 5367 0 3 0x4000080 fsleep syz-executor.0
69464 107382 0 0 3 0x14200 acct acct
5367 356066 98987 0 3 0x82 nanosleep syz-executor.0
60423 184149 0 0 3 0x14280 nfsidl nfsio
60542 318860 0 0 3 0x14280 nfsidl nfsio
13262 427657 0 0 3 0x14280 nfsidl nfsio
76120 504321 0 0 3 0x14280 nfsidl nfsio
18316 241369 0 0 3 0x14280 nfsidl nfsio
9162 22358 0 0 3 0x14280 nfsidl nfsio
89848 458314 0 0 3 0x14280 nfsidl nfsio
30878 252797 0 0 3 0x14280 nfsidl nfsio
16106 481402 0 0 3 0x14280 nfsidl nfsio
55947 169977 0 0 3 0x14280 nfsidl nfsio
51887 302684 0 0 3 0x14280 nfsidl nfsio
41880 220345 0 0 3 0x14280 nfsidl nfsio
36124 167343 0 0 3 0x14280 nfsidl nfsio
23099 418108 0 0 3 0x14280 nfsidl nfsio
60841 5484 0 0 3 0x14280 nfsidl nfsio
72805 167009 0 0 3 0x14280 nfsidl nfsio
81763 153548 0 0 3 0x14280 nfsidl nfsio
86015 276993 0 0 3 0x14280 nfsidl nfsio
51782 407404 0 0 3 0x14280 nfsidl nfsio
4039 30431 0 0 3 0x14280 nfsidl nfsio
78946 309215 0 0 3 0x14200 bored sosplice
*13810 74615 98987 0 7 0x2 syz-executor.1
98987 281831 99423 0 3 0x82 thrsleep syz-fuzzer
98987 517283 99423 0 3 0x4000082 nanosleep syz-fuzzer
98987 74552 99423 0 3 0x4000082 thrsleep syz-fuzzer
98987 201469 99423 0 3 0x4000082 thrsleep syz-fuzzer
98987 82154 99423 0 3 0x4000082 thrsleep syz-fuzzer
98987 474256 99423 0 3 0x4000082 nanosleep syz-fuzzer
98987 154714 99423 0 3 0x4000082 thrsleep syz-fuzzer
98987 90349 99423 0 3 0x4000082 thrsleep syz-fuzzer
98987 67641 99423 0 3 0x4000082 thrsleep syz-fuzzer
98987 424717 99423 0 3 0x4000082 kqread syz-fuzzer
99423 71498 20185 0 3 0x10008a pause ksh
20185 60337 15064 0 7 0x12 sshd
60428 311583 1 0 3 0x100083 ttyin getty
15064 148048 1 0 3 0x80 select sshd
42130 162316 24567 74 3 0x100092 bpf pflogd
24567 249171 1 0 3 0x80 netio pflogd
23225 236203 84894 73 3 0x100090 kqread syslogd
84894 21244 1 0 3 0x100082 netio syslogd
59680 252009 1 77 3 0x100090 poll dhclient
28989 399095 1 0 3 0x80 poll dhclient
32830 151249 0 0 3 0x14200 bored smr
97655 460636 0 0 3 0x14200 pgzero zerothread
58441 477340 0 0 3 0x14200 aiodoned aiodoned
78231 179328 0 0 3 0x14200 syncer update
92842 114813 0 0 3 0x14200 cleaner cleaner
60050 225907 0 0 3 0x14200 reaper reaper
10596 56263 0 0 3 0x14200 pgdaemon pagedaemon
75569 4191 0 0 3 0x14200 bored crynlk
56644 106488 0 0 3 0x14200 bored crypto
86208 441215 0 0 3 0x40014200 acpi0 acpi0
1540 332242 0 0 3 0x40014200 idle1
24916 64036 0 0 3 0x14200 bored softnet
18453 256353 0 0 3 0x14200 bored systqmp
94582 509996 0 0 3 0x14200 bored systq
85786 164508 0 0 3 0x40014200 bored softclock
52297 394881 0 0 3 0x40014200 idle0
1 464570 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &iopl->mtx r = 0 (0xffff800000038168)
#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 scsi_iopool_run+0xcf scsi_ioh_deq sys/scsi/scsi_base.c:389 [inline]
#3 scsi_iopool_run+0xcf sys/scsi/scsi_base.c:425
#4 scsi_xsh_runqueue+0x210 sys/scsi/scsi_base.c:596
#5 scsi_xsh_add+0xc9 sys/scsi/scsi_base.c:535
#6 sdstrategy+0x187 sys/scsi/sd.c:585
#7 spec_strategy+0x74 sys/kern/spec_vnops.c:473
#8 VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:712
#9 bwrite+0x1ea sys/kern/vfs_bio.c:762
#10 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113
#11 ffs_truncate+0xc76
#12 ufs_inactive+0x155 sys/ufs/ufs/ufs_inode.c:84
#13 VOP_INACTIVE+0xaa sys/kern/vfs_vops.c:573
#14 vput+0xb6 sys/kern/vfs_subr.c:771
#15 ufs_remove+0x137 sys/ufs/ufs/ufs_vnops.c:618
#16 VOP_REMOVE+0x11f sys/kern/vfs_vops.c:379
#17 dounlinkat+0x195 sys/kern/vfs_syscalls.c:1889
#18 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#18 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Process 13810 (syz-executor.1) thread 0xffff800020e0aae8 (74615)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828b55a0)
#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:1262
#7 bwrite+0x215 sys/kern/vfs_bio.c:771
#8 ufs_dirremove+0x291
#9 ufs_remove+0x154 sys/ufs/ufs/ufs_vnops.c:611
#10 VOP_REMOVE+0x11f sys/kern/vfs_vops.c:379
#11 dounlinkat+0x195 sys/kern/vfs_syscalls.c:1889
#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 (0xfffffd807b8e10a0)
#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 (0xfffffd806b202e68)
#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 cache_lookup+0x2bb sys/kern/vfs_cache.c:224
#7 ufs_lookup+0x1bc sys/ufs/ufs/ufs_lookup.c:162
#8 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90
#9 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568
#10 namei+0x63c sys/kern/vfs_lookup.c:249
#11 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853
#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 mutex &iopl->mtx r = 0 (0xffff800000038168)
#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 scsi_iopool_run+0xcf scsi_ioh_deq sys/scsi/scsi_base.c:389 [inline]
#3 scsi_iopool_run+0xcf sys/scsi/scsi_base.c:425
#4 scsi_xsh_runqueue+0x210 sys/scsi/scsi_base.c:596
#5 scsi_xsh_add+0xc9 sys/scsi/scsi_base.c:535
#6 sdstrategy+0x187 sys/scsi/sd.c:585
#7 spec_strategy+0x74 sys/kern/spec_vnops.c:473
#8 VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:712
#9 bwrite+0x1ea sys/kern/vfs_bio.c:762
#10 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113
#11 ffs_truncate+0xc76
#12 ufs_inactive+0x155 sys/ufs/ufs/ufs_inode.c:84
#13 VOP_INACTIVE+0xaa sys/kern/vfs_vops.c:573
#14 vput+0xb6 sys/kern/vfs_subr.c:771
#15 ufs_remove+0x137 sys/ufs/ufs/ufs_vnops.c:618
#16 VOP_REMOVE+0x11f sys/kern/vfs_vops.c:379
#17 dounlinkat+0x195 sys/kern/vfs_syscalls.c:1889
#18 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#18 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Process 20185 (sshd) thread 0xffff800020e40600 (60337)
exclusive rwlock netlock r = 0 (0xffffffff8278f3d8)
#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:543
#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 9538 6438K 6819K 78643K 11729 0
pcb 13 8K 8K 78643K 91 0
rtable 105 4K 6K 78643K 516 0
ifaddr 84 16K 16K 78643K 198 0
sysctl 2 0K 0K 78643K 2 0
counters 43 33K 34K 78643K 61 0
ioctlops 0 0K 4K 78643K 1526 0
iov 0 0K 16K 78643K 317 0
mount 1 1K 1K 78643K 1 0
vnodes 1223 77K 77K 78643K 1680 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 19 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 176 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 5 13K 25K 78643K 1101 0
sigio 0 0K 0K 78643K 4 0
proc 61 63K 83K 78643K 642 0
subproc 32 2K 2K 78643K 85 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 43 0
in_multi 54 2K 3K 78643K 219 0
ether_multi 1 0K 0K 78643K 15 0
mrt 0 0K 0K 78643K 4 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 61 281K 281K 78643K 61 0
exec 0 0K 1K 78643K 301 0
pfkey data 0 0K 1K 78643K 1 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 123 39K 41K 78643K 4348 0
UVM aobj 47 6K 6K 78643K 54 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 80 0
NDP 14 0K 0K 78643K 52 0
temp 140 3866K 3943K 78643K 23543 0
kqueue 3 4K 8K 78643K 18 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 12 0 6 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 57 0 55 1 0 1 1 0 8 0
rtentry 112 125 0 84 2 0 2 2 0 8 0
unpcb 120 303 0 293 1 0 1 1 0 8 0
syncache 264 13 0 13 3 3 0 1 0 8 0
tcpqe 32 68 0 68 1 1 0 1 0 8 0
tcpcb 544 244 0 240 2 1 1 2 0 8 0
inpcb 296 758 0 751 5 3 2 2 0 8 1
rttmr 72 2 0 2 1 1 0 1 0 8 0
nd6 48 38 0 34 1 0 1 1 0 8 0
pkpcb 40 6 0 6 3 2 1 1 0 8 1
pffrag 232 3 0 2 2 1 1 1 0 482 0
pffrnode 88 3 0 2 2 1 1 1 0 8 0
pffrent 40 7 0 6 3 2 1 1 0 8 0
pfosfp 40 848 0 423 5 0 5 5 0 8 0
pfosfpen 112 1431 0 714 21 0 21 21 0 8 0
pfrktable 1344 7 0 6 1 0 1 1 0 8 0
pfstitem 24 18 0 16 1 0 1 1 0 8 0
pfstkey 112 18 0 16 1 0 1 1 0 8 0
pfstate 328 18 0 16 2 1 1 2 0 8 0
pfrule 1360 24 0 18 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 480 0 304 14 1 13 13 0 8 0
art_table 32 481 0 304 2 0 2 2 0 8 0
art_node 16 124 0 86 1 0 1 1 0 8 0
sysvmsgpl 40 60 0 29 1 0 1 1 0 8 0
semapl 112 174 0 164 1 0 1 1 0 8 0
shmpl 112 51 0 8 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 3100 0 1686 89 0 89 89 0 8 0
ffsino 272 3100 0 1686 95 0 95 95 0 8 0
nchpl 144 5511 0 3908 60 0 60 60 0 8 0
uvmvnodes 72 3383 0 0 62 0 62 62 0 8 0
vnodes 208 3383 0 0 179 0 179 179 0 8 0
namei 1024 14835 0 14835 4 3 1 1 0 8 1
percpumem 16 41 0 9 1 0 1 1 0 8 0
vcpupl 1984 1 0 0 1 0 1 1 0 8 0
vmpool 560 8 0 7 1 0 1 1 0 8 0
pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0
scxspl 192 14643 0 14643 12 11 1 7 0 8 1
plimitpl 152 62 0 54 1 0 1 1 0 8 0
sigapl 424 1329 0 1276 7 0 7 7 0 8 0
futexpl 56 13561 0 13560 3 2 1 1 0 8 0
knotepl 112 121 0 102 1 0 1 1 0 8 0
kqueuepl 144 80 0 77 1 0 1 1 0 8 0
pipepl 304 190 0 180 3 2 1 2 0 8 0
fdescpl 496 1292 0 1276 3 0 3 3 0 8 0
filepl 152 7108 0 7005 7 2 5 5 0 8 0
lockfpl 104 197 0 196 1 0 1 1 0 8 0
lockfspl 48 59 0 58 1 0 1 1 0 8 0
sessionpl 112 21 0 10 1 0 1 1 0 8 0
pgrppl 48 31 0 20 1 0 1 1 0 8 0
ucredpl 96 581 0 572 1 0 1 1 0 8 0
zombiepl 144 1276 0 1276 2 1 1 1 0 8 1
processpl 992 1329 0 1276 7 0 7 7 0 8 0
procpl 624 3445 0 3381 6 0 6 6 0 8 0
sosppl 128 6 0 6 2 2 0 1 0 8 0
sockpl 400 1125 0 1106 6 3 3 4 0 8 1
mcl64k 65536 18 0 0 3 0 3 3 0 8 0
mcl16k 16384 5 0 0 1 0 1 1 0 8 0
mcl12k 12288 9 0 0 1 0 1 1 0 8 0
mcl9k 9216 15 0 0 2 0 2 2 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 9 0 0 2 0 2 2 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 167 0 0 20 0 20 20 0 8 0
mtagpl 96 35 0 0 1 0 1 1 0 8 0
mbufpl 256 367 0 0 16 0 16 16 0 8 0
bufpl 280 6012 0 141 420 0 420 420 0 8 0
anonpl 16 146872 0 129826 93 18 75 85 0 124 0
amapchunkpl 152 7072 0 6919 15 8 7 14 0 158 0
amappl16 192 5846 0 4912 63 10 53 59 0 8 0
amappl15 184 188 0 187 2 1 1 1 0 8 0
amappl14 176 726 0 718 1 0 1 1 0 8 0
amappl13 168 143 0 140 1 0 1 1 0 8 0
amappl12 160 7 0 5 2 1 1 1 0 8 0
amappl11 152 562 0 546 1 0 1 1 0 8 0
amappl10 144 28 0 24 1 0 1 1 0 8 0
amappl9 136 389 0 387 1 0 1 1 0 8 0
amappl8 128 428 0 394 2 0 2 2 0 8 0
amappl7 120 145 0 131 1 0 1 1 0 8 0
amappl6 112 25 0 19 2 1 1 1 0 8 0
amappl5 104 698 0 682 1 0 1 1 0 8 0
amappl4 96 1141 0 1109 1 0 1 1 0 8 0
amappl3 88 853 0 846 1 0 1 1 0 8 0
amappl2 80 9390 0 9317 2 0 2 2 0 8 0
amappl1 72 46247 0 45784 23 13 10 18 0 8 0
amappl 80 3729 0 3683 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 53 0 7 1 0 1 1 0 8 0
uaddrrnd 24 1300 0 1283 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1300 0 1283 1 0 1 1 0 8 0
vmmpekpl 168 13034 0 12991 2 0 2 2 0 8 0
vmmpepl 168 173054 0 170925 174 63 111 129 0 357 13
vmsppl 368 1299 0 1283 2 0 2 2 0 8 0
pdppl 4096 2607 0 2567 6 0 6 6 0 8 0
pvpl 32 449888 0 429458 227 36 191 201 0 265 15
pmappl 232 1299 0 1283 4 2 2 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 275 0 11 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: 0x7f7ffffce0b0, count: -1
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020d70ff0) 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_write_1(3f8,0,3a) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759
comcnputc(800,3a) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline]
comcnputc(800,3a) at comcnputc+0x131 sys/dev/ic/com.c:1254
cnputc(3a) at cnputc+0x4c sys/dev/cons.c:239
kputchar(3a,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343
kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700
panic(ffffffff823fe066) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline]
panic(ffffffff823fe066) at panic+0xf3 sys/kern/subr_prf.c:197
pool_cache_get(ffffffff828b5e40) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff828b5e40) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff828b5e40,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283
tcp_output(ffff800000ad9ee0) at tcp_output+0x14e6
tcp_usrreq(fffffd806eaddaf8,9,fffffd807f01f900,0,0,ffff800020e40600) at tcp_usrreq+0xa55
end trace frame: 0xffff800020e04790, count: 0
ddb{1}> trace
x86_ipi_db(ffff800020d70ff0) 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_write_1(3f8,0,3a) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759
comcnputc(800,3a) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline]
comcnputc(800,3a) at comcnputc+0x131 sys/dev/ic/com.c:1254
cnputc(3a) at cnputc+0x4c sys/dev/cons.c:239
kputchar(3a,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343
kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700
panic(ffffffff823fe066) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline]
panic(ffffffff823fe066) at panic+0xf3 sys/kern/subr_prf.c:197
pool_cache_get(ffffffff828b5e40) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff828b5e40) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff828b5e40,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283
tcp_output(ffff800000ad9ee0) at tcp_output+0x14e6
tcp_usrreq(fffffd806eaddaf8,9,fffffd807f01f900,0,0,ffff800020e40600) at tcp_usrreq+0xa55
sosend(fffffd806eaddaf8,0,ffff800020e04858,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555
dofilewritev(ffff800020e40600,4,ffff800020e04858,0,ffff800020e04940) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365
sys_write(ffff800020e40600,ffff800020e048f0,ffff800020e04940) at sys_write+0x83 sys/kern/sys_generic.c:285
syscall(ffff800020e049c0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020e049c0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe6400, count: -19
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: c4e156dd Userland timecounter implementation for arm64.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1260d6b3100000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=6069bccee4f8b4caa7b3
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6069bc...@syzkaller.appspotmail.com
" "" "" "" "panic: poWoARlN_IcNaGc:h eS_iPtL eNmO_Tm aLOgWiEcR_cEDh eOcNk : SYmSbCufApLlL c1p0u -f2r0ee58 2li4s EtX ImTo di0 fi9
e
d:Stopped at savectx+0xb1: movl $0,%gs:0x530
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 74615 13810 0 0x2 0 0 syz-executor.1
60337 20185 0 0x12 0 1 sshd
savectx() at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffce0b0, 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 0xfffffd8067295200+16 0x0!=0x13924ee2958ede84
ddb{0}> trace
savectx() at savectx+0xb1
end of kernel
end trace frame: 0x7f7ffffce0b0, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800023104550
rbx 0
rdx 0x8b
rcx 0x2
rax 0x38
r8 0xffffffff817fa50f kprintf+0x16f
r9 0x1
r10 0x2
r11 0xfce5d92460e99143
r12 0
r13 0
r14 0xffff800020e0aae8
r15 0
rip 0xffffffff81f323f1 savectx+0xb1
cs 0x8
rflags 0x46
rsp 0xffff8000231044d0
ss 0x10
savectx+0xb1: movl $0,%gs:0x530
ddb{0}> show proc
PROC (syz-executor.1) pid=74615 stat=onproc
flags process=2<EXEC,8ORPHAN> proc=0
pri=17, usrpri=80, nice=20
forw=0xffffffffffffffff, list=0xffff800020ddc278,0xffff800020e0a888
process=0xffff800020df07d0 user=0xffff8000230ff000, vmspace=0xfffffd807f000000
estcpu=36, cpticks=4, pctcpu=0.25
user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
56210 226072 5367 0 3 0x80 nanosleep syz-executor.0
56210 393473 5367 0 3 0x4000080 ttyout syz-executor.0
56210 42616 5367 0 3 0x4000080 fsleep syz-executor.0
69464 107382 0 0 3 0x14200 acct acct
5367 356066 98987 0 3 0x82 nanosleep syz-executor.0
60423 184149 0 0 3 0x14280 nfsidl nfsio
60542 318860 0 0 3 0x14280 nfsidl nfsio
13262 427657 0 0 3 0x14280 nfsidl nfsio
76120 504321 0 0 3 0x14280 nfsidl nfsio
18316 241369 0 0 3 0x14280 nfsidl nfsio
9162 22358 0 0 3 0x14280 nfsidl nfsio
89848 458314 0 0 3 0x14280 nfsidl nfsio
30878 252797 0 0 3 0x14280 nfsidl nfsio
16106 481402 0 0 3 0x14280 nfsidl nfsio
55947 169977 0 0 3 0x14280 nfsidl nfsio
51887 302684 0 0 3 0x14280 nfsidl nfsio
41880 220345 0 0 3 0x14280 nfsidl nfsio
36124 167343 0 0 3 0x14280 nfsidl nfsio
23099 418108 0 0 3 0x14280 nfsidl nfsio
60841 5484 0 0 3 0x14280 nfsidl nfsio
72805 167009 0 0 3 0x14280 nfsidl nfsio
81763 153548 0 0 3 0x14280 nfsidl nfsio
86015 276993 0 0 3 0x14280 nfsidl nfsio
51782 407404 0 0 3 0x14280 nfsidl nfsio
4039 30431 0 0 3 0x14280 nfsidl nfsio
78946 309215 0 0 3 0x14200 bored sosplice
*13810 74615 98987 0 7 0x2 syz-executor.1
98987 281831 99423 0 3 0x82 thrsleep syz-fuzzer
98987 517283 99423 0 3 0x4000082 nanosleep syz-fuzzer
98987 74552 99423 0 3 0x4000082 thrsleep syz-fuzzer
98987 201469 99423 0 3 0x4000082 thrsleep syz-fuzzer
98987 82154 99423 0 3 0x4000082 thrsleep syz-fuzzer
98987 474256 99423 0 3 0x4000082 nanosleep syz-fuzzer
98987 154714 99423 0 3 0x4000082 thrsleep syz-fuzzer
98987 90349 99423 0 3 0x4000082 thrsleep syz-fuzzer
98987 67641 99423 0 3 0x4000082 thrsleep syz-fuzzer
98987 424717 99423 0 3 0x4000082 kqread syz-fuzzer
99423 71498 20185 0 3 0x10008a pause ksh
20185 60337 15064 0 7 0x12 sshd
60428 311583 1 0 3 0x100083 ttyin getty
15064 148048 1 0 3 0x80 select sshd
42130 162316 24567 74 3 0x100092 bpf pflogd
24567 249171 1 0 3 0x80 netio pflogd
23225 236203 84894 73 3 0x100090 kqread syslogd
84894 21244 1 0 3 0x100082 netio syslogd
59680 252009 1 77 3 0x100090 poll dhclient
28989 399095 1 0 3 0x80 poll dhclient
32830 151249 0 0 3 0x14200 bored smr
97655 460636 0 0 3 0x14200 pgzero zerothread
58441 477340 0 0 3 0x14200 aiodoned aiodoned
78231 179328 0 0 3 0x14200 syncer update
92842 114813 0 0 3 0x14200 cleaner cleaner
60050 225907 0 0 3 0x14200 reaper reaper
10596 56263 0 0 3 0x14200 pgdaemon pagedaemon
75569 4191 0 0 3 0x14200 bored crynlk
56644 106488 0 0 3 0x14200 bored crypto
86208 441215 0 0 3 0x40014200 acpi0 acpi0
1540 332242 0 0 3 0x40014200 idle1
24916 64036 0 0 3 0x14200 bored softnet
18453 256353 0 0 3 0x14200 bored systqmp
94582 509996 0 0 3 0x14200 bored systq
85786 164508 0 0 3 0x40014200 bored softclock
52297 394881 0 0 3 0x40014200 idle0
1 464570 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &iopl->mtx r = 0 (0xffff800000038168)
#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 scsi_iopool_run+0xcf scsi_ioh_deq sys/scsi/scsi_base.c:389 [inline]
#3 scsi_iopool_run+0xcf sys/scsi/scsi_base.c:425
#4 scsi_xsh_runqueue+0x210 sys/scsi/scsi_base.c:596
#5 scsi_xsh_add+0xc9 sys/scsi/scsi_base.c:535
#6 sdstrategy+0x187 sys/scsi/sd.c:585
#7 spec_strategy+0x74 sys/kern/spec_vnops.c:473
#8 VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:712
#9 bwrite+0x1ea sys/kern/vfs_bio.c:762
#10 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113
#11 ffs_truncate+0xc76
#12 ufs_inactive+0x155 sys/ufs/ufs/ufs_inode.c:84
#13 VOP_INACTIVE+0xaa sys/kern/vfs_vops.c:573
#14 vput+0xb6 sys/kern/vfs_subr.c:771
#15 ufs_remove+0x137 sys/ufs/ufs/ufs_vnops.c:618
#16 VOP_REMOVE+0x11f sys/kern/vfs_vops.c:379
#17 dounlinkat+0x195 sys/kern/vfs_syscalls.c:1889
#18 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#18 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Process 13810 (syz-executor.1) thread 0xffff800020e0aae8 (74615)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828b55a0)
#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:1262
#7 bwrite+0x215 sys/kern/vfs_bio.c:771
#8 ufs_dirremove+0x291
#9 ufs_remove+0x154 sys/ufs/ufs/ufs_vnops.c:611
#10 VOP_REMOVE+0x11f sys/kern/vfs_vops.c:379
#11 dounlinkat+0x195 sys/kern/vfs_syscalls.c:1889
#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 (0xfffffd807b8e10a0)
#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 (0xfffffd806b202e68)
#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 cache_lookup+0x2bb sys/kern/vfs_cache.c:224
#7 ufs_lookup+0x1bc sys/ufs/ufs/ufs_lookup.c:162
#8 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90
#9 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568
#10 namei+0x63c sys/kern/vfs_lookup.c:249
#11 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853
#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 mutex &iopl->mtx r = 0 (0xffff800000038168)
#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 scsi_iopool_run+0xcf scsi_ioh_deq sys/scsi/scsi_base.c:389 [inline]
#3 scsi_iopool_run+0xcf sys/scsi/scsi_base.c:425
#4 scsi_xsh_runqueue+0x210 sys/scsi/scsi_base.c:596
#5 scsi_xsh_add+0xc9 sys/scsi/scsi_base.c:535
#6 sdstrategy+0x187 sys/scsi/sd.c:585
#7 spec_strategy+0x74 sys/kern/spec_vnops.c:473
#8 VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:712
#9 bwrite+0x1ea sys/kern/vfs_bio.c:762
#10 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113
#11 ffs_truncate+0xc76
#12 ufs_inactive+0x155 sys/ufs/ufs/ufs_inode.c:84
#13 VOP_INACTIVE+0xaa sys/kern/vfs_vops.c:573
#14 vput+0xb6 sys/kern/vfs_subr.c:771
#15 ufs_remove+0x137 sys/ufs/ufs/ufs_vnops.c:618
#16 VOP_REMOVE+0x11f sys/kern/vfs_vops.c:379
#17 dounlinkat+0x195 sys/kern/vfs_syscalls.c:1889
#18 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#18 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Process 20185 (sshd) thread 0xffff800020e40600 (60337)
exclusive rwlock netlock r = 0 (0xffffffff8278f3d8)
#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:543
#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 9538 6438K 6819K 78643K 11729 0
pcb 13 8K 8K 78643K 91 0
rtable 105 4K 6K 78643K 516 0
ifaddr 84 16K 16K 78643K 198 0
sysctl 2 0K 0K 78643K 2 0
counters 43 33K 34K 78643K 61 0
ioctlops 0 0K 4K 78643K 1526 0
iov 0 0K 16K 78643K 317 0
mount 1 1K 1K 78643K 1 0
vnodes 1223 77K 77K 78643K 1680 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 19 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 176 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 5 13K 25K 78643K 1101 0
sigio 0 0K 0K 78643K 4 0
proc 61 63K 83K 78643K 642 0
subproc 32 2K 2K 78643K 85 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 43 0
in_multi 54 2K 3K 78643K 219 0
ether_multi 1 0K 0K 78643K 15 0
mrt 0 0K 0K 78643K 4 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 61 281K 281K 78643K 61 0
exec 0 0K 1K 78643K 301 0
pfkey data 0 0K 1K 78643K 1 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 123 39K 41K 78643K 4348 0
UVM aobj 47 6K 6K 78643K 54 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 80 0
NDP 14 0K 0K 78643K 52 0
temp 140 3866K 3943K 78643K 23543 0
kqueue 3 4K 8K 78643K 18 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 12 0 6 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 57 0 55 1 0 1 1 0 8 0
rtentry 112 125 0 84 2 0 2 2 0 8 0
unpcb 120 303 0 293 1 0 1 1 0 8 0
syncache 264 13 0 13 3 3 0 1 0 8 0
tcpqe 32 68 0 68 1 1 0 1 0 8 0
tcpcb 544 244 0 240 2 1 1 2 0 8 0
inpcb 296 758 0 751 5 3 2 2 0 8 1
rttmr 72 2 0 2 1 1 0 1 0 8 0
nd6 48 38 0 34 1 0 1 1 0 8 0
pkpcb 40 6 0 6 3 2 1 1 0 8 1
pffrag 232 3 0 2 2 1 1 1 0 482 0
pffrnode 88 3 0 2 2 1 1 1 0 8 0
pffrent 40 7 0 6 3 2 1 1 0 8 0
pfosfp 40 848 0 423 5 0 5 5 0 8 0
pfosfpen 112 1431 0 714 21 0 21 21 0 8 0
pfrktable 1344 7 0 6 1 0 1 1 0 8 0
pfstitem 24 18 0 16 1 0 1 1 0 8 0
pfstkey 112 18 0 16 1 0 1 1 0 8 0
pfstate 328 18 0 16 2 1 1 2 0 8 0
pfrule 1360 24 0 18 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 480 0 304 14 1 13 13 0 8 0
art_table 32 481 0 304 2 0 2 2 0 8 0
art_node 16 124 0 86 1 0 1 1 0 8 0
sysvmsgpl 40 60 0 29 1 0 1 1 0 8 0
semapl 112 174 0 164 1 0 1 1 0 8 0
shmpl 112 51 0 8 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 3100 0 1686 89 0 89 89 0 8 0
ffsino 272 3100 0 1686 95 0 95 95 0 8 0
nchpl 144 5511 0 3908 60 0 60 60 0 8 0
uvmvnodes 72 3383 0 0 62 0 62 62 0 8 0
vnodes 208 3383 0 0 179 0 179 179 0 8 0
namei 1024 14835 0 14835 4 3 1 1 0 8 1
percpumem 16 41 0 9 1 0 1 1 0 8 0
vcpupl 1984 1 0 0 1 0 1 1 0 8 0
vmpool 560 8 0 7 1 0 1 1 0 8 0
pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0
scxspl 192 14643 0 14643 12 11 1 7 0 8 1
plimitpl 152 62 0 54 1 0 1 1 0 8 0
sigapl 424 1329 0 1276 7 0 7 7 0 8 0
futexpl 56 13561 0 13560 3 2 1 1 0 8 0
knotepl 112 121 0 102 1 0 1 1 0 8 0
kqueuepl 144 80 0 77 1 0 1 1 0 8 0
pipepl 304 190 0 180 3 2 1 2 0 8 0
fdescpl 496 1292 0 1276 3 0 3 3 0 8 0
filepl 152 7108 0 7005 7 2 5 5 0 8 0
lockfpl 104 197 0 196 1 0 1 1 0 8 0
lockfspl 48 59 0 58 1 0 1 1 0 8 0
sessionpl 112 21 0 10 1 0 1 1 0 8 0
pgrppl 48 31 0 20 1 0 1 1 0 8 0
ucredpl 96 581 0 572 1 0 1 1 0 8 0
zombiepl 144 1276 0 1276 2 1 1 1 0 8 1
processpl 992 1329 0 1276 7 0 7 7 0 8 0
procpl 624 3445 0 3381 6 0 6 6 0 8 0
sosppl 128 6 0 6 2 2 0 1 0 8 0
sockpl 400 1125 0 1106 6 3 3 4 0 8 1
mcl64k 65536 18 0 0 3 0 3 3 0 8 0
mcl16k 16384 5 0 0 1 0 1 1 0 8 0
mcl12k 12288 9 0 0 1 0 1 1 0 8 0
mcl9k 9216 15 0 0 2 0 2 2 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 9 0 0 2 0 2 2 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 167 0 0 20 0 20 20 0 8 0
mtagpl 96 35 0 0 1 0 1 1 0 8 0
mbufpl 256 367 0 0 16 0 16 16 0 8 0
bufpl 280 6012 0 141 420 0 420 420 0 8 0
anonpl 16 146872 0 129826 93 18 75 85 0 124 0
amapchunkpl 152 7072 0 6919 15 8 7 14 0 158 0
amappl16 192 5846 0 4912 63 10 53 59 0 8 0
amappl15 184 188 0 187 2 1 1 1 0 8 0
amappl14 176 726 0 718 1 0 1 1 0 8 0
amappl13 168 143 0 140 1 0 1 1 0 8 0
amappl12 160 7 0 5 2 1 1 1 0 8 0
amappl11 152 562 0 546 1 0 1 1 0 8 0
amappl10 144 28 0 24 1 0 1 1 0 8 0
amappl9 136 389 0 387 1 0 1 1 0 8 0
amappl8 128 428 0 394 2 0 2 2 0 8 0
amappl7 120 145 0 131 1 0 1 1 0 8 0
amappl6 112 25 0 19 2 1 1 1 0 8 0
amappl5 104 698 0 682 1 0 1 1 0 8 0
amappl4 96 1141 0 1109 1 0 1 1 0 8 0
amappl3 88 853 0 846 1 0 1 1 0 8 0
amappl2 80 9390 0 9317 2 0 2 2 0 8 0
amappl1 72 46247 0 45784 23 13 10 18 0 8 0
amappl 80 3729 0 3683 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 53 0 7 1 0 1 1 0 8 0
uaddrrnd 24 1300 0 1283 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1300 0 1283 1 0 1 1 0 8 0
vmmpekpl 168 13034 0 12991 2 0 2 2 0 8 0
vmmpepl 168 173054 0 170925 174 63 111 129 0 357 13
vmsppl 368 1299 0 1283 2 0 2 2 0 8 0
pdppl 4096 2607 0 2567 6 0 6 6 0 8 0
pvpl 32 449888 0 429458 227 36 191 201 0 265 15
pmappl 232 1299 0 1283 4 2 2 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 275 0 11 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: 0x7f7ffffce0b0, count: -1
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020d70ff0) 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_write_1(3f8,0,3a) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759
comcnputc(800,3a) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline]
comcnputc(800,3a) at comcnputc+0x131 sys/dev/ic/com.c:1254
cnputc(3a) at cnputc+0x4c sys/dev/cons.c:239
kputchar(3a,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343
kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700
panic(ffffffff823fe066) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline]
panic(ffffffff823fe066) at panic+0xf3 sys/kern/subr_prf.c:197
pool_cache_get(ffffffff828b5e40) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff828b5e40) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff828b5e40,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283
tcp_output(ffff800000ad9ee0) at tcp_output+0x14e6
tcp_usrreq(fffffd806eaddaf8,9,fffffd807f01f900,0,0,ffff800020e40600) at tcp_usrreq+0xa55
end trace frame: 0xffff800020e04790, count: 0
ddb{1}> trace
x86_ipi_db(ffff800020d70ff0) 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_write_1(3f8,0,3a) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759
comcnputc(800,3a) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline]
comcnputc(800,3a) at comcnputc+0x131 sys/dev/ic/com.c:1254
cnputc(3a) at cnputc+0x4c sys/dev/cons.c:239
kputchar(3a,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343
kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700
panic(ffffffff823fe066) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline]
panic(ffffffff823fe066) at panic+0xf3 sys/kern/subr_prf.c:197
pool_cache_get(ffffffff828b5e40) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline]
pool_cache_get(ffffffff828b5e40) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884
pool_get(ffffffff828b5e40,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283
tcp_output(ffff800000ad9ee0) at tcp_output+0x14e6
tcp_usrreq(fffffd806eaddaf8,9,fffffd807f01f900,0,0,ffff800020e40600) at tcp_usrreq+0xa55
sosend(fffffd806eaddaf8,0,ffff800020e04858,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555
dofilewritev(ffff800020e40600,4,ffff800020e04858,0,ffff800020e04940) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365
sys_write(ffff800020e40600,ffff800020e048f0,ffff800020e04940) at sys_write+0x83 sys/kern/sys_generic.c:285
syscall(ffff800020e049c0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020e049c0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe6400, count: -19
---
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Anton Lindqvist
Jul 17, 2020, 3:31:06 AM7/17/20
to syzbot, syzkaller-o...@googlegroups.com
#syz dup: pool: cpu free list modified: mbufpl
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