kernel: page fault trap, code=0 (2)
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syzbot
Mar 14, 2019, 9:41:06 PM3/14/19
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: fee69528 Fix the balancing of work queue interrupts.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=15af92d7200000
kernel config: https://syzkaller.appspot.com/x/.config?x=fa145722143cbd64
dashboard link: https://syzkaller.appspot.com/bug?extid=0bc97a4c43558c5ec628
userspace arch: amd64
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+0bc97a...@syzkaller.appspotmail.com
kernel: page fault trap, code=0
Stopped at rtable_satoplen+0x150: movzbl
0xffffffffffffffff(%r13),%r12d
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
kernel page fault
uvm_fault(0xffffffff82239270, 0xffff800003fd2002, 0, 1) -> e
rtable_satoplen(21,ffff800003fd1f59) at rtable_satoplen+0x150
sys/net/rtable.c:888
end trace frame: 0xffff800020c2ac10, count: 0
ddb{1}> trace
rtable_satoplen(21,ffff800003fd1f59) at rtable_satoplen+0x150
sys/net/rtable.c:888
rtable_lookup(0,ffff800003fd1f09,ffff800003fd1f59,ffff800003fd1f11,21) at
rtable_lookup+0xfd sys/net/rtable.c:391
rtm_output(ffff800003fd1f00,ffff800020c2ad00,ffff800020c2ad08,21,0) at
rtm_output+0x1a7 sys/net/rtsock.c:952
route_output(fffffd806420e400,fffffd806f726780,0,0) at route_output+0x79b
sys/net/rtsock.c:806
route_usrreq(fffffd806f726780,9,fffffd806420e400,0,0,ffff800020b39080) at
route_usrreq+0x35d sys/net/rtsock.c:271
sosend(fffffd806f726780,0,ffff800020c2afc8,0,0,0) at sosend+0x6eb
sys/kern/uipc_socket.c:513
sendit(ffff800020b39080,3,ffff800020c2b088,0,ffff800020c2b150) at
sendit+0x590 sys/kern/uipc_syscalls.c:662
sys_sendto(ffff800020b39080,ffff800020c2b168,ffff800020c2b150) at
sys_sendto+0x92
syscall(ffff800020c2b200) at syscall+0x5b8 mi_syscall
sys/sys/syscall_mi.h:99 [inline]
syscall(ffff800020c2b200) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574
Xsyscall(6,0,ffffffffffffffd8,0,6,7ef18fab010) at Xsyscall+0x128
end of kernel
end trace frame: 0x7f149f70c90, count: -10
ddb{1}> show registers
rdi 0
rsi 0xaa
rbp 0xffff800020c2ab70
rbx 0xffffffffffffff5a
rdx 0xffff800003fd1f5d
rcx 0xffff800003fd2003
rax 0xffff800003fd2003
r8 0x21
r9 0x1
r10 0x4
r11 0x89c88da4ffc7763b
r12 0
r13 0xffff800003fd2003
r14 0xffffffff8221f1f0 mplsdomain
r15 0x4
rip 0xffffffff817f4cd0 rtable_satoplen+0x150
cs 0x8
rflags 0x10287 __ALIGN_SIZE+0xf287
rsp 0xffff800020c2ab20
ss 0x10
rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d
ddb{1}> show proc
PROC (syz-executor.1) pid=266177 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=77, usrpri=77, nice=20
forw=0xffffffffffffffff, list=0xffff800020b392d8,0xffffffff8233d1e8
process=0xffff800020b8d710 user=0xffff800020c26000,
vmspace=0xfffffd807effd000
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
61214 389975 52126 0 2 0 syz-executor.1
*61214 266177 52126 0 7 0x4000000 syz-executor.1
71951 58372 1 0 3 0x100083 ttyin getty
52126 144204 17086 0 3 0x82 nanosleep syz-executor.1
71619 125603 0 0 3 0x14200 bored sosplice
90111 476648 17086 0 3 0x2 biowait syz-executor.0
17086 112857 16985 0 3 0x82 thrsleep syz-fuzzer
17086 157380 16985 0 3 0x4000082 nanosleep syz-fuzzer
17086 360089 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 426933 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 513573 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 146340 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 466100 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 129204 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 333808 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 297212 16985 0 3 0x4000082 kqread syz-fuzzer
16985 429407 17352 0 3 0x10008a pause ksh
17352 221833 41938 0 3 0x92 select sshd
41938 235908 1 0 3 0x80 select sshd
36925 483423 10788 74 3 0x100092 bpf pflogd
10788 404632 1 0 3 0x80 netio pflogd
49597 463025 52510 73 7 0x100090 syslogd
52510 459257 1 0 3 0x100082 netio syslogd
32010 303126 1 77 3 0x100090 poll dhclient
72495 432951 1 0 3 0x80 poll dhclient
15073 403496 0 0 2 0x14200 zerothread
26131 460039 0 0 3 0x14200 aiodoned aiodoned
51015 355403 0 0 3 0x14200 syncer update
7832 505109 0 0 3 0x14200 cleaner cleaner
87452 506642 0 0 3 0x14200 reaper reaper
39669 331684 0 0 3 0x14200 pgdaemon pagedaemon
59109 95094 0 0 3 0x14200 bored crynlk
36851 104720 0 0 3 0x14200 bored crypto
77240 42057 0 0 3 0x40014200 acpi0 acpi0
70345 413261 0 0 3 0x40014200 idle1
29366 303049 0 0 3 0x14200 bored softnet
41695 468435 0 0 3 0x14200 bored systqmp
32858 281662 0 0 3 0x14200 bored systq
87799 421556 0 0 3 0x40014200 bored softclock
97272 32541 0 0 3 0x40014200 idle0
40487 262223 0 0 3 0x14200 bored smr
1 48762 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 61214 (syz-executor.1) thread 0xffff800020b39080 (266177)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823542d8) locked @
/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/trap.c:161
#0 witness_lock+0x594 sys/kern/subr_witness.c:1205
#1 solock+0x7e sys/kern/uipc_socket2.c:292
#2 sosend+0x586 sys/kern/uipc_socket.c:501
#3 sendit+0x590 sys/kern/uipc_syscalls.c:662
#4 sys_sendto+0x92
#5 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline]
#5 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574
#6 Xsyscall+0x128
Process 90111 (syz-executor.0) thread 0xffff800020b15520 (476648)
exclusive rrwlock inode r = 0 (0xfffffd8068b192c0) locked @
/syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547
#0 witness_lock+0x594 sys/kern/subr_witness.c:1205
#1 _rw_enter+0x45d sys/kern/kern_rwlock.c:280
#2 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410
#3 VOP_LOCK+0x57 sys/kern/vfs_vops.c:602
#4 vn_lock+0x6e sys/kern/vfs_vnops.c:549
#5 vget+0x1c3 sys/kern/vfs_subr.c:672
#6 ufs_ihashget+0x151 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x84 sys/ufs/ffs/ffs_vfsops.c:1323
#8 ufs_lookup+0x15d3 sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x67 sys/kern/vfs_vops.c:90
#10 vfs_lookup+0x556 sys/kern/vfs_lookup.c:523
#11 namei+0x4b2 sys/kern/vfs_lookup.c:224
#12 dounlinkat+0xa5 sys/kern/vfs_syscalls.c:1673
#13 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline]
#13 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8068b19b40) locked @
/syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547
#0 witness_lock+0x594 sys/kern/subr_witness.c:1205
#1 _rw_enter+0x45d sys/kern/kern_rwlock.c:280
#2 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410
#3 VOP_LOCK+0x57 sys/kern/vfs_vops.c:602
#4 vn_lock+0x6e sys/kern/vfs_vnops.c:549
#5 vfs_lookup+0xf5 sys/kern/vfs_lookup.c:387
#6 namei+0x4b2 sys/kern/vfs_lookup.c:224
#7 dounlinkat+0xa5 sys/kern/vfs_syscalls.c:1673
#8 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline]
#8 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9561 6446K 6464K 78643K 11640 0 0
pcb 26 9K 11K 78643K 1519 0 0
rtable 104 4K 4K 78643K 921 0 0
ifaddr 71 16K 16K 78643K 460 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1499 0 0
iov 0 0K 24K 78643K 467 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1196 75K 76K 78643K 2832 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 5K 78643K 53 0 0
VM map 2 1K 1K 78643K 2 0 0
sem 12 0K 1K 78643K 530 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12628 0 0
file desc 5 13K 25K 78643K 2960 0 0
sigio 0 0K 0K 78643K 29 0 0
proc 54 51K 83K 78643K 838 0 0
subproc 64 65538K 67586K 78643K 112 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 405 0 0
in_multi 33 2K 2K 78643K 141 0 0
ether_multi 1 0K 0K 78643K 14 0 0
mrt 0 0K 0K 78643K 17 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 84 371K 371K 78643K 84 0 0
exec 0 0K 1K 78643K 467 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 96 21K 30K 78643K 10841 0 0
UVM aobj 130 4K 4K 78643K 146 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 129 0 0
NDP 16 0K 0K 78643K 123 0 0
temp 204 2380K 2453K 78643K 11218 0 0
kqueue 0 0K 0K 78643K 43 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg
Idle
arp 64 5 0 1 1 0 1 1 0
8 0
inpcbpl 280 1686 0 1679 1 0 1 1 0
8 0
plimitpl 152 118 0 110 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtentry 112 62 0 22 2 0 2 2 0
8 0
syncache 264 4 0 4 1 1 0 1 0
8 0
tcpqe 32 8 0 8 1 1 0 1 0
8 0
tcpcb 544 587 0 583 1 0 1 1 0
8 0
rttmr 72 6 0 6 5 5 0 1 0
8 0
nd6 48 6 0 2 1 0 1 1 0
8 0
ppxss 1128 89 0 89 14 13 1 1 0
8 1
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 50 0 43 1 0 1 1 0
8 0
pfstkey 112 50 0 43 1 0 1 1 0
8 0
pfstate 328 50 0 43 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 256 228 0 41 12 0 12 12 0
8 0
art_table 32 229 0 41 2 0 2 2 0
8 0
art_node 16 55 0 21 1 0 1 1 0
8 0
sysvmsgpl 40 21 0 3 1 0 1 1 0
8 0
semupl 112 2 0 2 1 1 0 1 0
8 0
semapl 112 528 0 518 1 0 1 1 0
8 0
shmpl 112 144 0 16 5 1 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 6952 0 5502 47 0 47 47 0
8 0
ffsino 272 6952 0 5502 97 0 97 97 0
8 0
nchpl 144 11536 0 9921 61 0 61 61 0
8 0
uvmvnodes 72 5926 0 0 108 0 108 108 0
8 0
vnodes 200 5926 0 0 312 0 312 312 0
8 0
namei 1024 36068 0 36068 3 2 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
scsiplug 64 4 0 4 4 4 0 1 0
8 0
scxspl 192 37314 0 37313 21 20 1 6 0
8 0
sigapl 432 3156 0 3141 3 1 2 3 0
8 0
futexpl 56 37115 0 37115 2 1 1 1 0
8 1
knotepl 112 792 0 765 9 8 1 2 0
8 0
kqueuepl 104 877 0 875 1 0 1 1 0
8 0
pipepl 112 2302 0 2283 7 6 1 2 0
8 0
fdescpl 488 3157 0 3141 4 1 3 3 0
8 0
filepl 152 20121 0 20021 11 6 5 6 0
8 0
lockfpl 104 1079 0 1079 6 5 1 1 0
8 1
lockfspl 32 1412 0 1412 6 5 1 1 0
8 1
sessionpl 112 22 0 11 1 0 1 1 0
8 0
pgrppl 48 83 0 72 1 0 1 1 0
8 0
ucredpl 96 5169 0 5160 1 0 1 1 0
8 0
zombiepl 144 3141 0 3141 2 1 1 1 0
8 1
processpl 840 3173 0 3141 4 0 4 4 0
8 0
procpl 600 10009 0 9967 5 1 4 5 0
8 0
srpgc 64 12 0 12 6 6 0 1 0
8 0
sosppl 128 48 0 48 15 14 1 1 0
8 1
sockpl 384 2975 0 2955 6 3 3 4 0
8 1
mcl64k 65536 229 0 0 29 16 13 29 0
8 1
mcl16k 16384 6 0 0 1 0 1 1 0
8 0
mcl12k 12288 17 0 0 2 0 2 2 0
8 0
mcl9k 9216 13 0 0 1 0 1 1 0
8 0
mcl8k 8192 8 0 0 1 0 1 1 0
8 0
mcl4k 4096 17 0 0 3 0 3 3 0
8 0
mcl2k2 2112 4 0 0 1 0 1 1 0
8 0
mcl2k 2048 126 0 0 15 0 15 15 0
8 0
mtagpl 80 2 0 0 1 0 1 1 0
8 0
mbufpl 256 392 0 0 17 0 17 17 0
8 0
bufpl 256 13101 0 6112 438 1 437 438 0
8 0
anonpl 16 331744 0 322738 151 98 53 54 0 125
11
amapchunkpl 152 19750 0 19663 30 24 6 11 0
158 0
amappl16 192 16435 0 15955 149 112 37 37 0 8
12
amappl15 184 1174 0 1171 1 0 1 1 0
8 0
amappl14 176 340 0 336 1 0 1 1 0
8 0
amappl13 168 32 0 29 1 0 1 1 0
8 0
amappl12 160 6 0 6 1 1 0 1 0
8 0
amappl11 152 1386 0 1371 1 0 1 1 0
8 0
amappl10 144 70 0 65 1 0 1 1 0
8 0
amappl9 136 372 0 369 1 0 1 1 0
8 0
amappl8 128 176 0 151 1 0 1 1 0
8 0
amappl7 120 1474 0 1468 1 0 1 1 0
8 0
amappl6 112 376 0 366 1 0 1 1 0
8 0
amappl5 104 1327 0 1310 1 0 1 1 0
8 0
amappl4 96 350 0 323 2 1 1 2 0
8 0
amappl3 88 242 0 237 1 0 1 1 0
8 0
amappl2 80 30193 0 30134 2 0 2 2 0
8 0
amappl1 72 79202 0 78762 25 16 9 19 0
8 0
amappl 72 10262 0 10227 1 0 1 1 0
75 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
dma64 64 259 0 259 1 1 0 1 0
8 0
dma32 32 7 0 7 1 1 0 1 0
8 0
dma16 16 17 0 17 1 1 0 1 0
8 0
aobjpl 64 145 0 16 3 0 3 3 0
8 0
uaddrrnd 24 3157 0 3141 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 3157 0 3141 1 0 1 1 0
8 0
vmmpekpl 168 30299 0 30275 2 0 2 2 0
8 0
vmmpepl 168 344510 0 343012 180 99 81 81 0 357
11
vmsppl 360 3156 0 3141 2 0 2 2 0
8 0
pdppl 4096 6322 0 6282 7 1 6 6 0
8 0
pvpl 32 939267 0 927043 316 179 137 145 0 265
27
pmappl 224 3156 0 3141 2 1 1 2 0
8 0
extentpl 40 39 0 25 1 0 1 1 0
8 0
phpool 112 632 0 23 18 0 18 18 0
8 0
---
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#bug-status-tracking for how to communicate with
syzbot.
syzbot found the following crash on:
HEAD commit: fee69528 Fix the balancing of work queue interrupts.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=15af92d7200000
kernel config: https://syzkaller.appspot.com/x/.config?x=fa145722143cbd64
dashboard link: https://syzkaller.appspot.com/bug?extid=0bc97a4c43558c5ec628
userspace arch: amd64
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+0bc97a...@syzkaller.appspotmail.com
kernel: page fault trap, code=0
Stopped at rtable_satoplen+0x150: movzbl
0xffffffffffffffff(%r13),%r12d
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
kernel page fault
uvm_fault(0xffffffff82239270, 0xffff800003fd2002, 0, 1) -> e
rtable_satoplen(21,ffff800003fd1f59) at rtable_satoplen+0x150
sys/net/rtable.c:888
end trace frame: 0xffff800020c2ac10, count: 0
ddb{1}> trace
rtable_satoplen(21,ffff800003fd1f59) at rtable_satoplen+0x150
sys/net/rtable.c:888
rtable_lookup(0,ffff800003fd1f09,ffff800003fd1f59,ffff800003fd1f11,21) at
rtable_lookup+0xfd sys/net/rtable.c:391
rtm_output(ffff800003fd1f00,ffff800020c2ad00,ffff800020c2ad08,21,0) at
rtm_output+0x1a7 sys/net/rtsock.c:952
route_output(fffffd806420e400,fffffd806f726780,0,0) at route_output+0x79b
sys/net/rtsock.c:806
route_usrreq(fffffd806f726780,9,fffffd806420e400,0,0,ffff800020b39080) at
route_usrreq+0x35d sys/net/rtsock.c:271
sosend(fffffd806f726780,0,ffff800020c2afc8,0,0,0) at sosend+0x6eb
sys/kern/uipc_socket.c:513
sendit(ffff800020b39080,3,ffff800020c2b088,0,ffff800020c2b150) at
sendit+0x590 sys/kern/uipc_syscalls.c:662
sys_sendto(ffff800020b39080,ffff800020c2b168,ffff800020c2b150) at
sys_sendto+0x92
syscall(ffff800020c2b200) at syscall+0x5b8 mi_syscall
sys/sys/syscall_mi.h:99 [inline]
syscall(ffff800020c2b200) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574
Xsyscall(6,0,ffffffffffffffd8,0,6,7ef18fab010) at Xsyscall+0x128
end of kernel
end trace frame: 0x7f149f70c90, count: -10
ddb{1}> show registers
rdi 0
rsi 0xaa
rbp 0xffff800020c2ab70
rbx 0xffffffffffffff5a
rdx 0xffff800003fd1f5d
rcx 0xffff800003fd2003
rax 0xffff800003fd2003
r8 0x21
r9 0x1
r10 0x4
r11 0x89c88da4ffc7763b
r12 0
r13 0xffff800003fd2003
r14 0xffffffff8221f1f0 mplsdomain
r15 0x4
rip 0xffffffff817f4cd0 rtable_satoplen+0x150
cs 0x8
rflags 0x10287 __ALIGN_SIZE+0xf287
rsp 0xffff800020c2ab20
ss 0x10
rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d
ddb{1}> show proc
PROC (syz-executor.1) pid=266177 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=77, usrpri=77, nice=20
forw=0xffffffffffffffff, list=0xffff800020b392d8,0xffffffff8233d1e8
process=0xffff800020b8d710 user=0xffff800020c26000,
vmspace=0xfffffd807effd000
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
61214 389975 52126 0 2 0 syz-executor.1
*61214 266177 52126 0 7 0x4000000 syz-executor.1
71951 58372 1 0 3 0x100083 ttyin getty
52126 144204 17086 0 3 0x82 nanosleep syz-executor.1
71619 125603 0 0 3 0x14200 bored sosplice
90111 476648 17086 0 3 0x2 biowait syz-executor.0
17086 112857 16985 0 3 0x82 thrsleep syz-fuzzer
17086 157380 16985 0 3 0x4000082 nanosleep syz-fuzzer
17086 360089 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 426933 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 513573 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 146340 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 466100 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 129204 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 333808 16985 0 3 0x4000082 thrsleep syz-fuzzer
17086 297212 16985 0 3 0x4000082 kqread syz-fuzzer
16985 429407 17352 0 3 0x10008a pause ksh
17352 221833 41938 0 3 0x92 select sshd
41938 235908 1 0 3 0x80 select sshd
36925 483423 10788 74 3 0x100092 bpf pflogd
10788 404632 1 0 3 0x80 netio pflogd
49597 463025 52510 73 7 0x100090 syslogd
52510 459257 1 0 3 0x100082 netio syslogd
32010 303126 1 77 3 0x100090 poll dhclient
72495 432951 1 0 3 0x80 poll dhclient
15073 403496 0 0 2 0x14200 zerothread
26131 460039 0 0 3 0x14200 aiodoned aiodoned
51015 355403 0 0 3 0x14200 syncer update
7832 505109 0 0 3 0x14200 cleaner cleaner
87452 506642 0 0 3 0x14200 reaper reaper
39669 331684 0 0 3 0x14200 pgdaemon pagedaemon
59109 95094 0 0 3 0x14200 bored crynlk
36851 104720 0 0 3 0x14200 bored crypto
77240 42057 0 0 3 0x40014200 acpi0 acpi0
70345 413261 0 0 3 0x40014200 idle1
29366 303049 0 0 3 0x14200 bored softnet
41695 468435 0 0 3 0x14200 bored systqmp
32858 281662 0 0 3 0x14200 bored systq
87799 421556 0 0 3 0x40014200 bored softclock
97272 32541 0 0 3 0x40014200 idle0
40487 262223 0 0 3 0x14200 bored smr
1 48762 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 61214 (syz-executor.1) thread 0xffff800020b39080 (266177)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823542d8) locked @
/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/trap.c:161
#0 witness_lock+0x594 sys/kern/subr_witness.c:1205
#1 solock+0x7e sys/kern/uipc_socket2.c:292
#2 sosend+0x586 sys/kern/uipc_socket.c:501
#3 sendit+0x590 sys/kern/uipc_syscalls.c:662
#4 sys_sendto+0x92
#5 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline]
#5 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574
#6 Xsyscall+0x128
Process 90111 (syz-executor.0) thread 0xffff800020b15520 (476648)
exclusive rrwlock inode r = 0 (0xfffffd8068b192c0) locked @
/syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547
#0 witness_lock+0x594 sys/kern/subr_witness.c:1205
#1 _rw_enter+0x45d sys/kern/kern_rwlock.c:280
#2 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410
#3 VOP_LOCK+0x57 sys/kern/vfs_vops.c:602
#4 vn_lock+0x6e sys/kern/vfs_vnops.c:549
#5 vget+0x1c3 sys/kern/vfs_subr.c:672
#6 ufs_ihashget+0x151 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x84 sys/ufs/ffs/ffs_vfsops.c:1323
#8 ufs_lookup+0x15d3 sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x67 sys/kern/vfs_vops.c:90
#10 vfs_lookup+0x556 sys/kern/vfs_lookup.c:523
#11 namei+0x4b2 sys/kern/vfs_lookup.c:224
#12 dounlinkat+0xa5 sys/kern/vfs_syscalls.c:1673
#13 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline]
#13 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8068b19b40) locked @
/syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547
#0 witness_lock+0x594 sys/kern/subr_witness.c:1205
#1 _rw_enter+0x45d sys/kern/kern_rwlock.c:280
#2 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410
#3 VOP_LOCK+0x57 sys/kern/vfs_vops.c:602
#4 vn_lock+0x6e sys/kern/vfs_vnops.c:549
#5 vfs_lookup+0xf5 sys/kern/vfs_lookup.c:387
#6 namei+0x4b2 sys/kern/vfs_lookup.c:224
#7 dounlinkat+0xa5 sys/kern/vfs_syscalls.c:1673
#8 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline]
#8 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9561 6446K 6464K 78643K 11640 0 0
pcb 26 9K 11K 78643K 1519 0 0
rtable 104 4K 4K 78643K 921 0 0
ifaddr 71 16K 16K 78643K 460 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1499 0 0
iov 0 0K 24K 78643K 467 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1196 75K 76K 78643K 2832 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 5K 78643K 53 0 0
VM map 2 1K 1K 78643K 2 0 0
sem 12 0K 1K 78643K 530 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12628 0 0
file desc 5 13K 25K 78643K 2960 0 0
sigio 0 0K 0K 78643K 29 0 0
proc 54 51K 83K 78643K 838 0 0
subproc 64 65538K 67586K 78643K 112 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 405 0 0
in_multi 33 2K 2K 78643K 141 0 0
ether_multi 1 0K 0K 78643K 14 0 0
mrt 0 0K 0K 78643K 17 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 84 371K 371K 78643K 84 0 0
exec 0 0K 1K 78643K 467 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 96 21K 30K 78643K 10841 0 0
UVM aobj 130 4K 4K 78643K 146 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 129 0 0
NDP 16 0K 0K 78643K 123 0 0
temp 204 2380K 2453K 78643K 11218 0 0
kqueue 0 0K 0K 78643K 43 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg
Idle
arp 64 5 0 1 1 0 1 1 0
8 0
inpcbpl 280 1686 0 1679 1 0 1 1 0
8 0
plimitpl 152 118 0 110 1 0 1 1 0
8 0
plcache 128 20 0 0 1 0 1 1 0
8 0
rtentry 112 62 0 22 2 0 2 2 0
8 0
syncache 264 4 0 4 1 1 0 1 0
8 0
tcpqe 32 8 0 8 1 1 0 1 0
8 0
tcpcb 544 587 0 583 1 0 1 1 0
8 0
rttmr 72 6 0 6 5 5 0 1 0
8 0
nd6 48 6 0 2 1 0 1 1 0
8 0
ppxss 1128 89 0 89 14 13 1 1 0
8 1
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 50 0 43 1 0 1 1 0
8 0
pfstkey 112 50 0 43 1 0 1 1 0
8 0
pfstate 328 50 0 43 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 256 228 0 41 12 0 12 12 0
8 0
art_table 32 229 0 41 2 0 2 2 0
8 0
art_node 16 55 0 21 1 0 1 1 0
8 0
sysvmsgpl 40 21 0 3 1 0 1 1 0
8 0
semupl 112 2 0 2 1 1 0 1 0
8 0
semapl 112 528 0 518 1 0 1 1 0
8 0
shmpl 112 144 0 16 5 1 4 4 0
8 0
dirhash 1024 17 0 0 3 0 3 3 0
8 0
dino1pl 128 6952 0 5502 47 0 47 47 0
8 0
ffsino 272 6952 0 5502 97 0 97 97 0
8 0
nchpl 144 11536 0 9921 61 0 61 61 0
8 0
uvmvnodes 72 5926 0 0 108 0 108 108 0
8 0
vnodes 200 5926 0 0 312 0 312 312 0
8 0
namei 1024 36068 0 36068 3 2 1 1 0
8 1
percpumem 16 30 0 0 1 0 1 1 0
8 0
scsiplug 64 4 0 4 4 4 0 1 0
8 0
scxspl 192 37314 0 37313 21 20 1 6 0
8 0
sigapl 432 3156 0 3141 3 1 2 3 0
8 0
futexpl 56 37115 0 37115 2 1 1 1 0
8 1
knotepl 112 792 0 765 9 8 1 2 0
8 0
kqueuepl 104 877 0 875 1 0 1 1 0
8 0
pipepl 112 2302 0 2283 7 6 1 2 0
8 0
fdescpl 488 3157 0 3141 4 1 3 3 0
8 0
filepl 152 20121 0 20021 11 6 5 6 0
8 0
lockfpl 104 1079 0 1079 6 5 1 1 0
8 1
lockfspl 32 1412 0 1412 6 5 1 1 0
8 1
sessionpl 112 22 0 11 1 0 1 1 0
8 0
pgrppl 48 83 0 72 1 0 1 1 0
8 0
ucredpl 96 5169 0 5160 1 0 1 1 0
8 0
zombiepl 144 3141 0 3141 2 1 1 1 0
8 1
processpl 840 3173 0 3141 4 0 4 4 0
8 0
procpl 600 10009 0 9967 5 1 4 5 0
8 0
srpgc 64 12 0 12 6 6 0 1 0
8 0
sosppl 128 48 0 48 15 14 1 1 0
8 1
sockpl 384 2975 0 2955 6 3 3 4 0
8 1
mcl64k 65536 229 0 0 29 16 13 29 0
8 1
mcl16k 16384 6 0 0 1 0 1 1 0
8 0
mcl12k 12288 17 0 0 2 0 2 2 0
8 0
mcl9k 9216 13 0 0 1 0 1 1 0
8 0
mcl8k 8192 8 0 0 1 0 1 1 0
8 0
mcl4k 4096 17 0 0 3 0 3 3 0
8 0
mcl2k2 2112 4 0 0 1 0 1 1 0
8 0
mcl2k 2048 126 0 0 15 0 15 15 0
8 0
mtagpl 80 2 0 0 1 0 1 1 0
8 0
mbufpl 256 392 0 0 17 0 17 17 0
8 0
bufpl 256 13101 0 6112 438 1 437 438 0
8 0
anonpl 16 331744 0 322738 151 98 53 54 0 125
11
amapchunkpl 152 19750 0 19663 30 24 6 11 0
158 0
amappl16 192 16435 0 15955 149 112 37 37 0 8
12
amappl15 184 1174 0 1171 1 0 1 1 0
8 0
amappl14 176 340 0 336 1 0 1 1 0
8 0
amappl13 168 32 0 29 1 0 1 1 0
8 0
amappl12 160 6 0 6 1 1 0 1 0
8 0
amappl11 152 1386 0 1371 1 0 1 1 0
8 0
amappl10 144 70 0 65 1 0 1 1 0
8 0
amappl9 136 372 0 369 1 0 1 1 0
8 0
amappl8 128 176 0 151 1 0 1 1 0
8 0
amappl7 120 1474 0 1468 1 0 1 1 0
8 0
amappl6 112 376 0 366 1 0 1 1 0
8 0
amappl5 104 1327 0 1310 1 0 1 1 0
8 0
amappl4 96 350 0 323 2 1 1 2 0
8 0
amappl3 88 242 0 237 1 0 1 1 0
8 0
amappl2 80 30193 0 30134 2 0 2 2 0
8 0
amappl1 72 79202 0 78762 25 16 9 19 0
8 0
amappl 72 10262 0 10227 1 0 1 1 0
75 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
dma64 64 259 0 259 1 1 0 1 0
8 0
dma32 32 7 0 7 1 1 0 1 0
8 0
dma16 16 17 0 17 1 1 0 1 0
8 0
aobjpl 64 145 0 16 3 0 3 3 0
8 0
uaddrrnd 24 3157 0 3141 1 0 1 1 0
8 0
uaddrbest 32 2 0 0 1 0 1 1 0
8 0
uaddr 24 3157 0 3141 1 0 1 1 0
8 0
vmmpekpl 168 30299 0 30275 2 0 2 2 0
8 0
vmmpepl 168 344510 0 343012 180 99 81 81 0 357
11
vmsppl 360 3156 0 3141 2 0 2 2 0
8 0
pdppl 4096 6322 0 6282 7 1 6 6 0
8 0
pvpl 32 939267 0 927043 316 179 137 145 0 265
27
pmappl 224 3156 0 3141 2 1 1 2 0
8 0
extentpl 40 39 0 25 1 0 1 1 0
8 0
phpool 112 632 0 23 18 0 18 18 0
8 0
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with
syzbot.
Anton Lindqvist
Mar 15, 2019, 6:11:21 PM3/15/19
to syzbot, syzkaller-o...@googlegroups.com
#syz dup: uvm_fault: rtable_satoplen
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