panic: spl assertion failure in yield
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syzbot
May 29, 2020, 6:02:28 PM5/29/20
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 151ba632 Pass a NULL instead of zeroed out va_list from do..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=163edb26100000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe55924c11e64b0a
dashboard link: https://syzkaller.appspot.com/bug?extid=342fbc4f1750e87c72f6
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+342fbc...@syzkaller.appspotmail.com
panic: spl assertion failure in yield
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*440821 69202 0 0 0x4000000 0 syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822509f7) at panic+0x15c sys/kern/subr_prf.c:207
splassert_fail(0,1,ffffffff82225416) at splassert_fail+0x102 sys/kern/subr_prf.c:237
yield() at yield+0x6f sys/kern/sched_bsd.c:304
pool_get(ffffffff825ee3f8,1) at pool_get+0x166 sys/kern/subr_pool.c:588
m_get(1,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250
sockargs(ffff80001fa0e920,20000040,a,3) at sockargs+0x8d sys/kern/uipc_syscalls.c:1115
sys_connect(ffff80001d789ed0,ffff80001fa0e9a8,ffff80001fa0e9f0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:360
syscall(ffff80001fa0ea70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3c4a6718fb0, count: 5
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
spl assertion failure in yield
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822509f7) at panic+0x15c sys/kern/subr_prf.c:207
splassert_fail(0,1,ffffffff82225416) at splassert_fail+0x102 sys/kern/subr_prf.c:237
yield() at yield+0x6f sys/kern/sched_bsd.c:304
pool_get(ffffffff825ee3f8,1) at pool_get+0x166 sys/kern/subr_pool.c:588
m_get(1,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250
sockargs(ffff80001fa0e920,20000040,a,3) at sockargs+0x8d sys/kern/uipc_syscalls.c:1115
sys_connect(ffff80001d789ed0,ffff80001fa0e9a8,ffff80001fa0e9f0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:360
syscall(ffff80001fa0ea70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3c4a6718fb0, count: -10
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80001fa0e680
rbx 0xffff80001fa0e730
rdx 0x2
rcx 0
rax 0x1
r8 0xffffffff8200075f kprintf+0x15f
r9 0x1
r10 0x2
r11 0x54433b31225c1286
r12 0x3000000008
r13 0xffff80001fa0e690
r14 0x100
r15 0x1
rip 0xffffffff811a6e98 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80001fa0e670
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.0) pid=440821 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff80001d789780,0xffff80001d789040
process=0xffff8000208a6af8 user=0xffff80001fa09000, vmspace=0xfffffd806bc09330
estcpu=1, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
14564 500249 73015 0 2 0 syz-executor.1
14564 178149 73015 0 3 0x4000080 fsleep syz-executor.1
69202 103806 42670 0 2 0 syz-executor.0
*69202 440821 42670 0 7 0x4000000 syz-executor.0
96760 369430 0 0 3 0x14200 bored sosplice
6705 515921 0 0 3 0x14280 nfsidl nfsio
45307 42742 0 0 3 0x14280 nfsidl nfsio
94614 393141 0 0 3 0x14280 nfsidl nfsio
14299 279379 0 0 3 0x14280 nfsidl nfsio
71470 92649 0 0 3 0x14280 nfsidl nfsio
6377 453380 0 0 3 0x14280 nfsidl nfsio
90180 318212 0 0 3 0x14280 nfsidl nfsio
15684 118409 0 0 3 0x14280 nfsidl nfsio
6395 336045 0 0 3 0x14280 nfsidl nfsio
95713 20590 0 0 3 0x14280 nfsidl nfsio
28576 454450 0 0 3 0x14280 nfsidl nfsio
88229 40934 0 0 3 0x14280 nfsidl nfsio
48209 435522 0 0 3 0x14280 nfsidl nfsio
61069 246533 0 0 3 0x14280 nfsidl nfsio
90412 303858 0 0 3 0x14280 nfsidl nfsio
3070 230281 0 0 3 0x14280 nfsidl nfsio
74098 63671 0 0 3 0x14280 nfsidl nfsio
54919 150563 0 0 3 0x14280 nfsidl nfsio
4890 519497 0 0 3 0x14280 nfsidl nfsio
40303 466317 0 0 3 0x14280 nfsidl nfsio
73015 331789 22040 0 3 0x82 nanosleep syz-executor.1
42670 272032 22040 0 3 0x82 nanosleep syz-executor.0
22040 116949 22664 0 3 0x82 thrsleep syz-fuzzer
22040 362958 22664 0 3 0x4000082 nanosleep syz-fuzzer
22040 123196 22664 0 3 0x4000082 thrsleep syz-fuzzer
22040 486470 22664 0 3 0x4000082 thrsleep syz-fuzzer
22040 134077 22664 0 3 0x4000082 thrsleep syz-fuzzer
22040 504070 22664 0 3 0x4000082 thrsleep syz-fuzzer
22040 513779 22664 0 3 0x4000082 thrsleep syz-fuzzer
22040 434639 22664 0 3 0x4000082 kqread syz-fuzzer
22664 218531 49141 0 3 0x10008a pause ksh
49141 485066 66906 0 3 0x92 select sshd
88980 519612 1 0 3 0x100083 ttyin getty
66906 127609 1 0 3 0x80 select sshd
95011 272431 31163 73 3 0x100090 kqread syslogd
31163 489802 1 0 3 0x100082 netio syslogd
72182 224699 1 77 3 0x100090 poll dhclient
26310 366527 1 0 3 0x80 poll dhclient
48788 484708 0 0 3 0x14200 bored smr
7492 84731 0 0 2 0x14200 zerothread
96800 60164 0 0 3 0x14200 aiodoned aiodoned
73316 412369 0 0 3 0x14200 syncer update
53523 422075 0 0 3 0x14200 cleaner cleaner
69277 219404 0 0 3 0x14200 reaper reaper
45621 85403 0 0 3 0x14200 pgdaemon pagedaemon
61441 22382 0 0 3 0x14200 bored crynlk
49873 267264 0 0 3 0x14200 bored crypto
93605 117920 0 0 3 0x40014200 acpi0 acpi0
97603 273540 0 0 3 0x14200 bored softnet
49555 40974 0 0 3 0x14200 bored systqmp
733 303876 0 0 3 0x14200 bored systq
62621 476188 0 0 3 0x40014200 bored softclock
63078 98987 0 0 3 0x40014200 idle0
1 254023 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9500 6350K 6596K 78643K 11050 0
pcb 13 8K 8K 78643K 61 0
rtable 110 3K 5K 78643K 258 0
ifaddr 78 16K 16K 78643K 103 0
sysctl 2 0K 0K 78643K 2 0
counters 21 16K 16K 78643K 24 0
ioctlops 0 0K 4K 78643K 32 0
iov 0 0K 12K 78643K 112 0
mount 1 1K 1K 78643K 1 0
vnodes 1220 77K 77K 78643K 1380 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 4 0
VM map 2 0K 0K 78643K 2 0
sem 12 1K 1K 78643K 26 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 195K 288K 78643K 12938 0
file desc 6 17K 25K 78643K 263 0
sigio 0 0K 0K 78643K 6 0
proc 51 38K 63K 78643K 394 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 24 0
in_multi 71 3K 3K 78643K 101 0
ether_multi 1 0K 0K 78643K 11 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 197 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 22K 38K 78643K 1572 0
UVM aobj 9 2K 2K 78643K 9 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 70 0
NDP 11 0K 0K 78643K 18 0
temp 92 3033K 3097K 78643K 12904 0
kqueue 3 4K 8K 78643K 9 0
SYN cache 2 16K 16K 78643K 2 0
ddb> 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
rtpcb 80 37 0 35 1 0 1 1 0 8 0
rtentry 112 46 0 1 2 0 2 2 0 8 0
unpcb 120 147 0 139 1 0 1 1 0 8 0
syncache 264 9 0 9 4 4 0 1 0 8 0
tcpqe 32 248 0 248 1 1 0 1 0 8 0
tcpcb 544 178 0 171 1 0 1 1 0 8 0
ipq 40 2 0 2 1 1 0 1 0 8 0
ipqe 40 90 0 90 1 1 0 1 0 8 0
inpcb 280 369 0 360 2 1 1 2 0 8 0
nd6 48 6 0 0 1 0 1 1 0 8 0
pfstscr 40 1 0 0 1 0 1 1 0 8 0
pfosfp 40 1 0 0 1 0 1 1 0 8 0
pfosfpen 112 2 0 0 1 0 1 1 0 8 0
pfrktable 1344 13 0 12 2 1 1 1 0 8 0
pftag 88 2 0 0 1 0 1 1 0 8 0
pfstitem 24 1 0 0 1 0 1 1 0 8 0
pfstkey 112 1 0 0 1 0 1 1 0 8 0
pfstate 328 1 0 0 1 0 1 1 0 8 0
pfrule 1360 5 0 3 3 2 1 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 194 0 0 13 0 13 13 0 8 0
art_table 32 196 0 0 2 0 2 2 0 8 0
art_node 16 45 0 4 1 0 1 1 0 8 0
sysvmsgpl 40 4 0 0 1 0 1 1 0 8 0
semupl 112 2 0 2 2 2 0 1 0 8 0
semapl 112 20 0 10 1 0 1 1 0 8 0
shmpl 112 7 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1826 0 432 88 0 88 88 0 8 0
ffsino 240 1826 0 432 83 0 83 83 0 8 0
nchpl 144 2417 0 815 60 0 60 60 0 8 0
uvmvnodes 72 1947 0 0 36 0 36 36 0 8 0
vnodes 208 1947 0 0 103 0 103 103 0 8 0
namei 1024 6770 0 6770 27 26 1 1 0 8 1
vmpool 528 2 0 2 1 1 0 1 0 8 0
pfiaddrpl 120 4 0 4 1 1 0 1 0 8 0
scxspl 192 6459 0 6459 14 13 1 1 0 8 1
plimitpl 152 26 0 19 1 0 1 1 0 8 0
sigapl 424 470 0 420 6 0 6 6 0 8 0
futexpl 56 4923 0 4922 28 27 1 1 0 8 0
knotepl 112 69 0 50 1 0 1 1 0 8 0
kqueuepl 144 25 0 22 1 0 1 1 0 8 0
pipelkpl 16 101 0 90 1 0 1 1 0 8 0
pipepl 120 202 0 181 1 0 1 1 0 8 0
fdescpl 432 435 0 420 2 0 2 2 0 8 0
filepl 120 2970 0 2868 5 1 4 4 0 8 0
lockfpl 104 199 0 198 1 0 1 1 0 8 0
lockfspl 48 51 0 50 1 0 1 1 0 8 0
sessionpl 112 17 0 7 1 0 1 1 0 8 0
pgrppl 48 19 0 9 1 0 1 1 0 8 0
ucredpl 96 797 0 789 1 0 1 1 0 8 0
zombiepl 144 421 0 421 2 1 1 1 0 8 1
processpl 920 470 0 420 7 0 7 7 0 8 0
procpl 624 899 0 840 12 7 5 6 0 8 0
sosppl 128 6 0 6 3 3 0 1 0 8 0
sockpl 400 553 0 534 25 23 2 3 0 8 0
mcl64k 65536 20 0 20 6 6 0 1 0 8 0
mcl16k 16384 3 0 3 3 3 0 1 0 8 0
mcl12k 12288 9 0 9 7 7 0 1 0 8 0
mcl9k 9216 7 0 7 5 5 0 1 0 8 0
mcl8k 8192 9 0 9 5 5 0 1 0 8 0
mcl4k 4096 26 0 26 12 12 0 1 0 8 0
mcl2k2 2112 3 0 3 3 3 0 1 0 8 0
mcl2k 2048 73383 0 73323 25 17 8 18 0 8 0
mtagpl 80 20 0 2 2 1 1 1 0 8 0
mbufpl 256 119081 0 118939 48 38 10 31 0 8 0
bufpl 280 3891 0 130 269 0 269 269 0 8 0
anonpl 16 52351 0 36761 71 8 63 64 0 107 0
amapchunkpl 152 2450 0 2324 21 15 6 19 0 158 0
amappl16 192 1912 0 1029 52 7 45 45 0 8 0
amappl15 184 1 0 0 1 0 1 1 0 8 0
amappl14 176 139 0 131 1 0 1 1 0 8 0
amappl13 168 27 0 24 1 0 1 1 0 8 0
amappl12 160 122 0 120 1 0 1 1 0 8 0
amappl11 152 47 0 37 1 0 1 1 0 8 0
amappl10 144 131 0 124 1 0 1 1 0 8 0
amappl9 136 369 0 367 1 0 1 1 0 8 0
amappl8 128 318 0 280 2 0 2 2 0 8 0
amappl7 120 109 0 96 1 0 1 1 0 8 0
amappl6 112 27 0 21 2 1 1 1 0 8 0
amappl5 104 267 0 257 1 0 1 1 0 8 0
amappl4 96 539 0 509 1 0 1 1 0 8 0
amappl3 88 226 0 217 1 0 1 1 0 8 0
amappl2 80 2649 0 2576 2 0 2 2 0 8 0
amappl1 72 17828 0 17408 23 13 10 17 0 8 0
amappl 80 1095 0 1054 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 8 0 0 1 0 1 1 0 8 0
uaddrrnd 24 437 0 422 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 437 0 422 1 0 1 1 0 8 0
vmmpekpl 168 7130 0 7099 2 0 2 2 0 8 0
vmmpepl 168 58534 0 56476 151 61 90 108 0 357 0
vmsppl 272 436 0 422 3 2 1 2 0 8 0
pdppl 4096 880 0 844 6 1 5 6 0 8 0
pvpl 32 170563 0 151829 185 33 152 156 0 265 0
pmappl 200 436 0 422 1 0 1 1 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 367 0 144 8 1 7 8 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822509f7) at panic+0x15c sys/kern/subr_prf.c:207
splassert_fail(0,1,ffffffff82225416) at splassert_fail+0x102 sys/kern/subr_prf.c:237
yield() at yield+0x6f sys/kern/sched_bsd.c:304
pool_get(ffffffff825ee3f8,1) at pool_get+0x166 sys/kern/subr_pool.c:588
m_get(1,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250
sockargs(ffff80001fa0e920,20000040,a,3) at sockargs+0x8d sys/kern/uipc_syscalls.c:1115
sys_connect(ffff80001d789ed0,ffff80001fa0e9a8,ffff80001fa0e9f0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:360
syscall(ffff80001fa0ea70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3c4a6718fb0, count: -10
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822509f7) at panic+0x15c sys/kern/subr_prf.c:207
splassert_fail(0,1,ffffffff82225416) at splassert_fail+0x102 sys/kern/subr_prf.c:237
yield() at yield+0x6f sys/kern/sched_bsd.c:304
pool_get(ffffffff825ee3f8,1) at pool_get+0x166 sys/kern/subr_pool.c:588
m_get(1,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250
sockargs(ffff80001fa0e920,20000040,a,3) at sockargs+0x8d sys/kern/uipc_syscalls.c:1115
sys_connect(ffff80001d789ed0,ffff80001fa0e9a8,ffff80001fa0e9f0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:360
syscall(ffff80001fa0ea70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3c4a6718fb0, count: -10
---
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: 151ba632 Pass a NULL instead of zeroed out va_list from do..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=163edb26100000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe55924c11e64b0a
dashboard link: https://syzkaller.appspot.com/bug?extid=342fbc4f1750e87c72f6
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+342fbc...@syzkaller.appspotmail.com
panic: spl assertion failure in yield
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*440821 69202 0 0 0x4000000 0 syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822509f7) at panic+0x15c sys/kern/subr_prf.c:207
splassert_fail(0,1,ffffffff82225416) at splassert_fail+0x102 sys/kern/subr_prf.c:237
yield() at yield+0x6f sys/kern/sched_bsd.c:304
pool_get(ffffffff825ee3f8,1) at pool_get+0x166 sys/kern/subr_pool.c:588
m_get(1,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250
sockargs(ffff80001fa0e920,20000040,a,3) at sockargs+0x8d sys/kern/uipc_syscalls.c:1115
sys_connect(ffff80001d789ed0,ffff80001fa0e9a8,ffff80001fa0e9f0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:360
syscall(ffff80001fa0ea70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3c4a6718fb0, count: 5
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
spl assertion failure in yield
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822509f7) at panic+0x15c sys/kern/subr_prf.c:207
splassert_fail(0,1,ffffffff82225416) at splassert_fail+0x102 sys/kern/subr_prf.c:237
yield() at yield+0x6f sys/kern/sched_bsd.c:304
pool_get(ffffffff825ee3f8,1) at pool_get+0x166 sys/kern/subr_pool.c:588
m_get(1,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250
sockargs(ffff80001fa0e920,20000040,a,3) at sockargs+0x8d sys/kern/uipc_syscalls.c:1115
sys_connect(ffff80001d789ed0,ffff80001fa0e9a8,ffff80001fa0e9f0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:360
syscall(ffff80001fa0ea70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3c4a6718fb0, count: -10
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80001fa0e680
rbx 0xffff80001fa0e730
rdx 0x2
rcx 0
rax 0x1
r8 0xffffffff8200075f kprintf+0x15f
r9 0x1
r10 0x2
r11 0x54433b31225c1286
r12 0x3000000008
r13 0xffff80001fa0e690
r14 0x100
r15 0x1
rip 0xffffffff811a6e98 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80001fa0e670
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.0) pid=440821 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff80001d789780,0xffff80001d789040
process=0xffff8000208a6af8 user=0xffff80001fa09000, vmspace=0xfffffd806bc09330
estcpu=1, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
14564 500249 73015 0 2 0 syz-executor.1
14564 178149 73015 0 3 0x4000080 fsleep syz-executor.1
69202 103806 42670 0 2 0 syz-executor.0
*69202 440821 42670 0 7 0x4000000 syz-executor.0
96760 369430 0 0 3 0x14200 bored sosplice
6705 515921 0 0 3 0x14280 nfsidl nfsio
45307 42742 0 0 3 0x14280 nfsidl nfsio
94614 393141 0 0 3 0x14280 nfsidl nfsio
14299 279379 0 0 3 0x14280 nfsidl nfsio
71470 92649 0 0 3 0x14280 nfsidl nfsio
6377 453380 0 0 3 0x14280 nfsidl nfsio
90180 318212 0 0 3 0x14280 nfsidl nfsio
15684 118409 0 0 3 0x14280 nfsidl nfsio
6395 336045 0 0 3 0x14280 nfsidl nfsio
95713 20590 0 0 3 0x14280 nfsidl nfsio
28576 454450 0 0 3 0x14280 nfsidl nfsio
88229 40934 0 0 3 0x14280 nfsidl nfsio
48209 435522 0 0 3 0x14280 nfsidl nfsio
61069 246533 0 0 3 0x14280 nfsidl nfsio
90412 303858 0 0 3 0x14280 nfsidl nfsio
3070 230281 0 0 3 0x14280 nfsidl nfsio
74098 63671 0 0 3 0x14280 nfsidl nfsio
54919 150563 0 0 3 0x14280 nfsidl nfsio
4890 519497 0 0 3 0x14280 nfsidl nfsio
40303 466317 0 0 3 0x14280 nfsidl nfsio
73015 331789 22040 0 3 0x82 nanosleep syz-executor.1
42670 272032 22040 0 3 0x82 nanosleep syz-executor.0
22040 116949 22664 0 3 0x82 thrsleep syz-fuzzer
22040 362958 22664 0 3 0x4000082 nanosleep syz-fuzzer
22040 123196 22664 0 3 0x4000082 thrsleep syz-fuzzer
22040 486470 22664 0 3 0x4000082 thrsleep syz-fuzzer
22040 134077 22664 0 3 0x4000082 thrsleep syz-fuzzer
22040 504070 22664 0 3 0x4000082 thrsleep syz-fuzzer
22040 513779 22664 0 3 0x4000082 thrsleep syz-fuzzer
22040 434639 22664 0 3 0x4000082 kqread syz-fuzzer
22664 218531 49141 0 3 0x10008a pause ksh
49141 485066 66906 0 3 0x92 select sshd
88980 519612 1 0 3 0x100083 ttyin getty
66906 127609 1 0 3 0x80 select sshd
95011 272431 31163 73 3 0x100090 kqread syslogd
31163 489802 1 0 3 0x100082 netio syslogd
72182 224699 1 77 3 0x100090 poll dhclient
26310 366527 1 0 3 0x80 poll dhclient
48788 484708 0 0 3 0x14200 bored smr
7492 84731 0 0 2 0x14200 zerothread
96800 60164 0 0 3 0x14200 aiodoned aiodoned
73316 412369 0 0 3 0x14200 syncer update
53523 422075 0 0 3 0x14200 cleaner cleaner
69277 219404 0 0 3 0x14200 reaper reaper
45621 85403 0 0 3 0x14200 pgdaemon pagedaemon
61441 22382 0 0 3 0x14200 bored crynlk
49873 267264 0 0 3 0x14200 bored crypto
93605 117920 0 0 3 0x40014200 acpi0 acpi0
97603 273540 0 0 3 0x14200 bored softnet
49555 40974 0 0 3 0x14200 bored systqmp
733 303876 0 0 3 0x14200 bored systq
62621 476188 0 0 3 0x40014200 bored softclock
63078 98987 0 0 3 0x40014200 idle0
1 254023 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9500 6350K 6596K 78643K 11050 0
pcb 13 8K 8K 78643K 61 0
rtable 110 3K 5K 78643K 258 0
ifaddr 78 16K 16K 78643K 103 0
sysctl 2 0K 0K 78643K 2 0
counters 21 16K 16K 78643K 24 0
ioctlops 0 0K 4K 78643K 32 0
iov 0 0K 12K 78643K 112 0
mount 1 1K 1K 78643K 1 0
vnodes 1220 77K 77K 78643K 1380 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 4 0
VM map 2 0K 0K 78643K 2 0
sem 12 1K 1K 78643K 26 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 195K 288K 78643K 12938 0
file desc 6 17K 25K 78643K 263 0
sigio 0 0K 0K 78643K 6 0
proc 51 38K 63K 78643K 394 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 24 0
in_multi 71 3K 3K 78643K 101 0
ether_multi 1 0K 0K 78643K 11 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 197 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 22K 38K 78643K 1572 0
UVM aobj 9 2K 2K 78643K 9 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 70 0
NDP 11 0K 0K 78643K 18 0
temp 92 3033K 3097K 78643K 12904 0
kqueue 3 4K 8K 78643K 9 0
SYN cache 2 16K 16K 78643K 2 0
ddb> 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
rtpcb 80 37 0 35 1 0 1 1 0 8 0
rtentry 112 46 0 1 2 0 2 2 0 8 0
unpcb 120 147 0 139 1 0 1 1 0 8 0
syncache 264 9 0 9 4 4 0 1 0 8 0
tcpqe 32 248 0 248 1 1 0 1 0 8 0
tcpcb 544 178 0 171 1 0 1 1 0 8 0
ipq 40 2 0 2 1 1 0 1 0 8 0
ipqe 40 90 0 90 1 1 0 1 0 8 0
inpcb 280 369 0 360 2 1 1 2 0 8 0
nd6 48 6 0 0 1 0 1 1 0 8 0
pfstscr 40 1 0 0 1 0 1 1 0 8 0
pfosfp 40 1 0 0 1 0 1 1 0 8 0
pfosfpen 112 2 0 0 1 0 1 1 0 8 0
pfrktable 1344 13 0 12 2 1 1 1 0 8 0
pftag 88 2 0 0 1 0 1 1 0 8 0
pfstitem 24 1 0 0 1 0 1 1 0 8 0
pfstkey 112 1 0 0 1 0 1 1 0 8 0
pfstate 328 1 0 0 1 0 1 1 0 8 0
pfrule 1360 5 0 3 3 2 1 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 194 0 0 13 0 13 13 0 8 0
art_table 32 196 0 0 2 0 2 2 0 8 0
art_node 16 45 0 4 1 0 1 1 0 8 0
sysvmsgpl 40 4 0 0 1 0 1 1 0 8 0
semupl 112 2 0 2 2 2 0 1 0 8 0
semapl 112 20 0 10 1 0 1 1 0 8 0
shmpl 112 7 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1826 0 432 88 0 88 88 0 8 0
ffsino 240 1826 0 432 83 0 83 83 0 8 0
nchpl 144 2417 0 815 60 0 60 60 0 8 0
uvmvnodes 72 1947 0 0 36 0 36 36 0 8 0
vnodes 208 1947 0 0 103 0 103 103 0 8 0
namei 1024 6770 0 6770 27 26 1 1 0 8 1
vmpool 528 2 0 2 1 1 0 1 0 8 0
pfiaddrpl 120 4 0 4 1 1 0 1 0 8 0
scxspl 192 6459 0 6459 14 13 1 1 0 8 1
plimitpl 152 26 0 19 1 0 1 1 0 8 0
sigapl 424 470 0 420 6 0 6 6 0 8 0
futexpl 56 4923 0 4922 28 27 1 1 0 8 0
knotepl 112 69 0 50 1 0 1 1 0 8 0
kqueuepl 144 25 0 22 1 0 1 1 0 8 0
pipelkpl 16 101 0 90 1 0 1 1 0 8 0
pipepl 120 202 0 181 1 0 1 1 0 8 0
fdescpl 432 435 0 420 2 0 2 2 0 8 0
filepl 120 2970 0 2868 5 1 4 4 0 8 0
lockfpl 104 199 0 198 1 0 1 1 0 8 0
lockfspl 48 51 0 50 1 0 1 1 0 8 0
sessionpl 112 17 0 7 1 0 1 1 0 8 0
pgrppl 48 19 0 9 1 0 1 1 0 8 0
ucredpl 96 797 0 789 1 0 1 1 0 8 0
zombiepl 144 421 0 421 2 1 1 1 0 8 1
processpl 920 470 0 420 7 0 7 7 0 8 0
procpl 624 899 0 840 12 7 5 6 0 8 0
sosppl 128 6 0 6 3 3 0 1 0 8 0
sockpl 400 553 0 534 25 23 2 3 0 8 0
mcl64k 65536 20 0 20 6 6 0 1 0 8 0
mcl16k 16384 3 0 3 3 3 0 1 0 8 0
mcl12k 12288 9 0 9 7 7 0 1 0 8 0
mcl9k 9216 7 0 7 5 5 0 1 0 8 0
mcl8k 8192 9 0 9 5 5 0 1 0 8 0
mcl4k 4096 26 0 26 12 12 0 1 0 8 0
mcl2k2 2112 3 0 3 3 3 0 1 0 8 0
mcl2k 2048 73383 0 73323 25 17 8 18 0 8 0
mtagpl 80 20 0 2 2 1 1 1 0 8 0
mbufpl 256 119081 0 118939 48 38 10 31 0 8 0
bufpl 280 3891 0 130 269 0 269 269 0 8 0
anonpl 16 52351 0 36761 71 8 63 64 0 107 0
amapchunkpl 152 2450 0 2324 21 15 6 19 0 158 0
amappl16 192 1912 0 1029 52 7 45 45 0 8 0
amappl15 184 1 0 0 1 0 1 1 0 8 0
amappl14 176 139 0 131 1 0 1 1 0 8 0
amappl13 168 27 0 24 1 0 1 1 0 8 0
amappl12 160 122 0 120 1 0 1 1 0 8 0
amappl11 152 47 0 37 1 0 1 1 0 8 0
amappl10 144 131 0 124 1 0 1 1 0 8 0
amappl9 136 369 0 367 1 0 1 1 0 8 0
amappl8 128 318 0 280 2 0 2 2 0 8 0
amappl7 120 109 0 96 1 0 1 1 0 8 0
amappl6 112 27 0 21 2 1 1 1 0 8 0
amappl5 104 267 0 257 1 0 1 1 0 8 0
amappl4 96 539 0 509 1 0 1 1 0 8 0
amappl3 88 226 0 217 1 0 1 1 0 8 0
amappl2 80 2649 0 2576 2 0 2 2 0 8 0
amappl1 72 17828 0 17408 23 13 10 17 0 8 0
amappl 80 1095 0 1054 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 8 0 0 1 0 1 1 0 8 0
uaddrrnd 24 437 0 422 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 437 0 422 1 0 1 1 0 8 0
vmmpekpl 168 7130 0 7099 2 0 2 2 0 8 0
vmmpepl 168 58534 0 56476 151 61 90 108 0 357 0
vmsppl 272 436 0 422 3 2 1 2 0 8 0
pdppl 4096 880 0 844 6 1 5 6 0 8 0
pvpl 32 170563 0 151829 185 33 152 156 0 265 0
pmappl 200 436 0 422 1 0 1 1 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 367 0 144 8 1 7 8 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822509f7) at panic+0x15c sys/kern/subr_prf.c:207
splassert_fail(0,1,ffffffff82225416) at splassert_fail+0x102 sys/kern/subr_prf.c:237
yield() at yield+0x6f sys/kern/sched_bsd.c:304
pool_get(ffffffff825ee3f8,1) at pool_get+0x166 sys/kern/subr_pool.c:588
m_get(1,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250
sockargs(ffff80001fa0e920,20000040,a,3) at sockargs+0x8d sys/kern/uipc_syscalls.c:1115
sys_connect(ffff80001d789ed0,ffff80001fa0e9a8,ffff80001fa0e9f0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:360
syscall(ffff80001fa0ea70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3c4a6718fb0, count: -10
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822509f7) at panic+0x15c sys/kern/subr_prf.c:207
splassert_fail(0,1,ffffffff82225416) at splassert_fail+0x102 sys/kern/subr_prf.c:237
yield() at yield+0x6f sys/kern/sched_bsd.c:304
pool_get(ffffffff825ee3f8,1) at pool_get+0x166 sys/kern/subr_pool.c:588
m_get(1,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250
sockargs(ffff80001fa0e920,20000040,a,3) at sockargs+0x8d sys/kern/uipc_syscalls.c:1115
sys_connect(ffff80001d789ed0,ffff80001fa0e9a8,ffff80001fa0e9f0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:360
syscall(ffff80001fa0ea70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3c4a6718fb0, count: -10
---
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
May 30, 2020, 7:53:13 AM5/30/20
to syzkaller-o...@googlegroups.com
syzbot has found a reproducer for the following crash on:
HEAD commit: d0e5c0ea Add a fix from ncurses 20200523 via Hiltjo Posthu..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1665b00e100000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13a0fff6100000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+342fbc...@syzkaller.appspotmail.com
panic: spl assertion failure in yield
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*248729 18514 0 0x2 0x4000000 0 syz-executor7465
splassert_fail(0,1,ffffffff8222174a) at splassert_fail+0x102 sys/kern/subr_prf.c:237
pfioctl(4900,cd604404,ffff8000006bf000,3,ffff80001d7a8390) at pfioctl+0x305e sys/net/pf_ioctl.c:1216
VOP_IOCTL(fffffd805dc40270,cd604404,ffff8000006bf000,3,fffffd806c3bfd20,ffff80001d7a8390) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd805d8cd4b8,cd604404,ffff8000006bf000,ffff80001d7a8390) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80001d7a8390,ffff80001d7ca668,ffff80001d7ca6b0) at sys_ioctl+0x4a1
syscall(ffff80001d7ca730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
splassert_fail(0,1,ffffffff8222174a) at splassert_fail+0x102 sys/kern/subr_prf.c:237
pfioctl(4900,cd604404,ffff8000006bf000,3,ffff80001d7a8390) at pfioctl+0x305e sys/net/pf_ioctl.c:1216
VOP_IOCTL(fffffd805dc40270,cd604404,ffff8000006bf000,3,fffffd806c3bfd20,ffff80001d7a8390) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd805d8cd4b8,cd604404,ffff8000006bf000,ffff80001d7a8390) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80001d7a8390,ffff80001d7ca668,ffff80001d7ca6b0) at sys_ioctl+0x4a1
syscall(ffff80001d7ca730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
rbx 0xffff80001d7ca100
r9 0x1
r10 0x2
r11 0xd20f713237f58bcc
r12 0x3000000008
r13 0xffff80001d7ca060
r14 0x100
r15 0x1
rip 0xffffffff81294578 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80001d7ca040
flags process=2<EXEC,8ORPHAN> proc=4000000<THREAD>
pri=54, usrpri=54, nice=20
forw=0xffffffffffffffff, list=0xffff80001d7a8600,0xffffffff825ec610
process=0xffff8000ffff9210 user=0xffff80001d7c5000, vmspace=0xfffffd806bc09660
estcpu=4, cpticks=0, pctcpu=0.0
*18514 248729 7834 0 7 0x4000002 syz-executor7465
7834 327965 50174 0 3 0x10008a pause ksh
50174 127670 88922 0 3 0x92 select sshd
24463 388494 1 0 3 0x100083 ttyin getty
88922 200262 1 0 3 0x80 select sshd
47592 212659 49766 73 3 0x100090 kqread syslogd
49766 486763 1 0 3 0x100082 netio syslogd
36180 205403 1 77 3 0x100090 poll dhclient
23480 175064 1 0 3 0x80 poll dhclient
76411 120503 0 0 3 0x14200 bored smr
78952 132584 0 0 3 0x14200 pgzero zerothread
92208 97701 0 0 3 0x14200 aiodoned aiodoned
73149 24946 0 0 3 0x14200 syncer update
14046 209907 0 0 3 0x14200 cleaner cleaner
38172 517899 0 0 3 0x14200 reaper reaper
46570 323948 0 0 3 0x14200 pgdaemon pagedaemon
10908 169556 0 0 3 0x14200 bored crynlk
7262 4801 0 0 3 0x14200 bored crypto
26334 261102 0 0 3 0x40014200 acpi0 acpi0
55731 24277 0 0 3 0x14200 bored softnet
76728 98254 0 0 3 0x14200 bored systqmp
88990 70580 0 0 3 0x14200 bored systq
54317 352746 0 0 3 0x40014200 bored softclock
67666 367841 0 0 3 0x40014200 idle0
1 229656 0 0 3 0x82 wait init
pcb 13 8K 8K 78643K 13 0
rtable 61 1K 2K 78643K 117 0
ifaddr 24 7K 7K 78643K 24 0
counters 19 16K 16K 78643K 19 0
ioctlops 1 4K 4K 78643K 15 0
proc 47 38K 46K 78643K 278 0
ether_multi 1 0K 0K 78643K 1 0
exec 0 0K 1K 78643K 151 0
UVM aobj 2 2K 2K 78643K 2 0
temp 18 3025K 3089K 78643K 1425 0
kqueue 2 2K 2K 78643K 2 0
rtpcb 80 15 0 13 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 120 27 0 19 1 0 1 1 0 8 0
syncache 264 5 0 5 2 2 0 1 0 8 0
tcpcb 544 8 0 5 1 0 1 1 0 8 0
inpcb 280 22 0 16 1 0 1 1 0 8 0
pfrule 1360 2 0 0 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 96 0 0 6 0 6 6 0 8 0
art_table 32 97 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
ffsino 240 1391 0 15 81 0 81 81 0 8 0
nchpl 144 1565 0 30 57 0 57 57 0 8 0
uvmvnodes 72 1400 0 0 26 0 26 26 0 8 0
vnodes 208 1400 0 0 74 0 74 74 0 8 0
namei 1024 3488 0 3488 3 2 1 1 0 8 1
scxspl 192 2816 0 2816 3 3 0 1 0 8 0
plimitpl 152 13 0 8 1 0 1 1 0 8 0
sigapl 424 191 0 166 4 0 4 4 0 8 0
futexpl 56 8 0 8 2 1 1 1 0 8 1
knotepl 112 5 0 0 1 0 1 1 0 8 0
kqueuepl 144 1 0 0 1 0 1 1 0 8 0
pipelkpl 16 57 0 53 2 1 1 1 0 8 0
pipepl 120 114 0 107 2 1 1 1 0 8 0
fdescpl 432 177 0 166 2 0 2 2 0 8 0
filepl 120 826 0 781 2 0 2 2 0 8 0
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 112 17 0 9 1 0 1 1 0 8 0
pgrppl 48 17 0 9 1 0 1 1 0 8 0
ucredpl 96 57 0 50 1 0 1 1 0 8 0
zombiepl 144 166 0 166 2 2 0 1 0 8 0
processpl 920 191 0 166 4 0 4 4 0 8 0
procpl 624 192 0 166 3 0 3 3 0 8 0
sockpl 400 64 0 48 2 0 2 2 0 8 0
mcl4k 4096 10 0 10 2 2 0 1 0 8 0
mcl2k 2048 5944 0 5912 9 4 5 8 0 8 0
mtagpl 80 2 0 2 1 1 0 1 0 8 0
mbufpl 256 10169 0 10125 5 1 4 5 0 8 0
bufpl 280 1812 0 84 124 0 124 124 0 8 0
anonpl 16 17283 0 16137 7 2 5 7 0 107 0
amapchunkpl 152 468 0 430 2 0 2 2 0 158 0
amappl16 192 68 0 64 1 0 1 1 0 8 0
amappl13 168 12 0 11 2 1 1 1 0 8 0
amappl12 160 6 0 6 1 1 0 1 0 8 0
amappl11 152 38 0 29 1 0 1 1 0 8 0
amappl10 144 5 0 3 1 0 1 1 0 8 0
amappl9 136 198 0 197 1 0 1 1 0 8 0
amappl8 128 202 0 200 1 0 1 1 0 8 0
amappl7 120 81 0 72 1 0 1 1 0 8 0
amappl6 112 11 0 11 2 2 0 1 0 8 0
amappl5 104 190 0 181 1 0 1 1 0 8 0
amappl4 96 399 0 376 1 0 1 1 0 8 0
amappl3 88 97 0 91 1 0 1 1 0 8 0
amappl2 80 664 0 609 3 1 2 2 0 8 0
amappl1 72 12205 0 11810 16 7 9 16 0 8 0
amappl 80 355 0 335 1 0 1 1 0 84 0
uaddrrnd 24 177 0 166 1 0 1 1 0 8 0
vmmpekpl 168 5285 0 5268 1 0 1 1 0 8 0
vmmpepl 168 25723 0 24933 54 19 35 48 0 357 0
vmsppl 272 176 0 166 1 0 1 1 0 8 0
pdppl 4096 360 0 332 5 0 5 5 0 8 0
pvpl 32 70572 0 67814 31 8 23 26 0 265 0
pmappl 200 176 0 166 1 0 1 1 0 8 0
splassert_fail(0,1,ffffffff8222174a) at splassert_fail+0x102 sys/kern/subr_prf.c:237
pfioctl(4900,cd604404,ffff8000006bf000,3,ffff80001d7a8390) at pfioctl+0x305e sys/net/pf_ioctl.c:1216
VOP_IOCTL(fffffd805dc40270,cd604404,ffff8000006bf000,3,fffffd806c3bfd20,ffff80001d7a8390) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd805d8cd4b8,cd604404,ffff8000006bf000,ffff80001d7a8390) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80001d7a8390,ffff80001d7ca668,ffff80001d7ca6b0) at sys_ioctl+0x4a1
syscall(ffff80001d7ca730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
splassert_fail(0,1,ffffffff8222174a) at splassert_fail+0x102 sys/kern/subr_prf.c:237
pfioctl(4900,cd604404,ffff8000006bf000,3,ffff80001d7a8390) at pfioctl+0x305e sys/net/pf_ioctl.c:1216
VOP_IOCTL(fffffd805dc40270,cd604404,ffff8000006bf000,3,fffffd806c3bfd20,ffff80001d7a8390) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd805d8cd4b8,cd604404,ffff8000006bf000,ffff80001d7a8390) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80001d7a8390,ffff80001d7ca668,ffff80001d7ca6b0) at sys_ioctl+0x4a1
syscall(ffff80001d7ca730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
HEAD commit: d0e5c0ea Add a fix from ncurses 20200523 via Hiltjo Posthu..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1665b00e100000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe55924c11e64b0a
dashboard link: https://syzkaller.appspot.com/bug?extid=342fbc4f1750e87c72f6
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=140904bc100000
dashboard link: https://syzkaller.appspot.com/bug?extid=342fbc4f1750e87c72f6
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13a0fff6100000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+342fbc...@syzkaller.appspotmail.com
panic: spl assertion failure in yield
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff82248b59) at panic+0x15c sys/kern/subr_prf.c:207
splassert_fail(0,1,ffffffff8222174a) at splassert_fail+0x102 sys/kern/subr_prf.c:237
yield() at yield+0x6f sys/kern/sched_bsd.c:304
pool_get(ffffffff82584428,d) at pool_get+0x166 sys/kern/subr_pool.c:588
pfioctl(4900,cd604404,ffff8000006bf000,3,ffff80001d7a8390) at pfioctl+0x305e sys/net/pf_ioctl.c:1216
VOP_IOCTL(fffffd805dc40270,cd604404,ffff8000006bf000,3,fffffd806c3bfd20,ffff80001d7a8390) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd805d8cd4b8,cd604404,ffff8000006bf000,ffff80001d7a8390) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80001d7a8390,ffff80001d7ca668,ffff80001d7ca6b0) at sys_ioctl+0x4a1
syscall(ffff80001d7ca730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6ab108933d0, count: 4
end of kernel
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
spl assertion failure in yield
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff82248b59) at panic+0x15c sys/kern/subr_prf.c:207
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
spl assertion failure in yield
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
splassert_fail(0,1,ffffffff8222174a) at splassert_fail+0x102 sys/kern/subr_prf.c:237
yield() at yield+0x6f sys/kern/sched_bsd.c:304
pool_get(ffffffff82584428,d) at pool_get+0x166 sys/kern/subr_pool.c:588
pfioctl(4900,cd604404,ffff8000006bf000,3,ffff80001d7a8390) at pfioctl+0x305e sys/net/pf_ioctl.c:1216
VOP_IOCTL(fffffd805dc40270,cd604404,ffff8000006bf000,3,fffffd806c3bfd20,ffff80001d7a8390) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd805d8cd4b8,cd604404,ffff8000006bf000,ffff80001d7a8390) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80001d7a8390,ffff80001d7ca668,ffff80001d7ca6b0) at sys_ioctl+0x4a1
syscall(ffff80001d7ca730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6ab108933d0, count: -11
end of kernel
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80001d7ca050
rdi 0
rsi 0x1
rbx 0xffff80001d7ca100
rdx 0x2
rcx 0
rax 0x1
r8 0xffffffff8101c2ef kprintf+0x15f
rcx 0
rax 0x1
r9 0x1
r10 0x2
r11 0xd20f713237f58bcc
r12 0x3000000008
r13 0xffff80001d7ca060
r14 0x100
r15 0x1
rip 0xffffffff81294578 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80001d7ca040
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor7465) pid=248729 stat=onproc
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
flags process=2<EXEC,8ORPHAN> proc=4000000<THREAD>
pri=54, usrpri=54, nice=20
forw=0xffffffffffffffff, list=0xffff80001d7a8600,0xffffffff825ec610
process=0xffff8000ffff9210 user=0xffff80001d7c5000, vmspace=0xfffffd806bc09660
estcpu=4, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
18514 133009 7834 0 2 0x2 syz-executor7465
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*18514 248729 7834 0 7 0x4000002 syz-executor7465
7834 327965 50174 0 3 0x10008a pause ksh
50174 127670 88922 0 3 0x92 select sshd
24463 388494 1 0 3 0x100083 ttyin getty
88922 200262 1 0 3 0x80 select sshd
47592 212659 49766 73 3 0x100090 kqread syslogd
49766 486763 1 0 3 0x100082 netio syslogd
36180 205403 1 77 3 0x100090 poll dhclient
23480 175064 1 0 3 0x80 poll dhclient
76411 120503 0 0 3 0x14200 bored smr
78952 132584 0 0 3 0x14200 pgzero zerothread
92208 97701 0 0 3 0x14200 aiodoned aiodoned
73149 24946 0 0 3 0x14200 syncer update
14046 209907 0 0 3 0x14200 cleaner cleaner
38172 517899 0 0 3 0x14200 reaper reaper
46570 323948 0 0 3 0x14200 pgdaemon pagedaemon
10908 169556 0 0 3 0x14200 bored crynlk
7262 4801 0 0 3 0x14200 bored crypto
26334 261102 0 0 3 0x40014200 acpi0 acpi0
55731 24277 0 0 3 0x14200 bored softnet
76728 98254 0 0 3 0x14200 bored systqmp
88990 70580 0 0 3 0x14200 bored systq
54317 352746 0 0 3 0x40014200 bored softclock
67666 367841 0 0 3 0x40014200 idle0
1 229656 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9440 6319K 6320K 78643K 10539 0
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
pcb 13 8K 8K 78643K 13 0
rtable 61 1K 2K 78643K 117 0
ifaddr 24 7K 7K 78643K 24 0
counters 19 16K 16K 78643K 19 0
ioctlops 1 4K 4K 78643K 15 0
mount 1 1K 1K 78643K 1 0
vnodes 1182 74K 74K 78643K 1187 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
UFS mount 5 36K 36K 78643K 5 0
VM map 2 0K 0K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 195K 288K 78643K 12938 0
file desc 1 0K 0K 78643K 1 0
ACPI 1809 195K 288K 78643K 12938 0
proc 47 38K 46K 78643K 278 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 11 0K 0K 78643K 11 0
NFS daemon 1 16K 16K 78643K 1 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 19 95K 95K 78643K 19 0
MSDOSFS mount 1 16K 16K 78643K 1 0
exec 0 0K 1K 78643K 151 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 56 2K 3K 78643K 690 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM aobj 2 2K 2K 78643K 2 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 3 0K 0K 78643K 3 0
crypto data 1 1K 1K 78643K 1 0
temp 18 3025K 3089K 78643K 1425 0
kqueue 2 2K 2K 78643K 2 0
SYN cache 2 16K 16K 78643K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 2 0 0 1 0 1 1 0 8 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 80 15 0 13 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 120 27 0 19 1 0 1 1 0 8 0
syncache 264 5 0 5 2 2 0 1 0 8 0
tcpcb 544 8 0 5 1 0 1 1 0 8 0
inpcb 280 22 0 16 1 0 1 1 0 8 0
pfrule 1360 2 0 0 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 96 0 0 6 0 6 6 0 8 0
art_table 32 97 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1391 0 15 86 0 86 86 0 8 0
ffsino 240 1391 0 15 81 0 81 81 0 8 0
nchpl 144 1565 0 30 57 0 57 57 0 8 0
uvmvnodes 72 1400 0 0 26 0 26 26 0 8 0
vnodes 208 1400 0 0 74 0 74 74 0 8 0
namei 1024 3488 0 3488 3 2 1 1 0 8 1
scxspl 192 2816 0 2816 3 3 0 1 0 8 0
plimitpl 152 13 0 8 1 0 1 1 0 8 0
sigapl 424 191 0 166 4 0 4 4 0 8 0
futexpl 56 8 0 8 2 1 1 1 0 8 1
knotepl 112 5 0 0 1 0 1 1 0 8 0
kqueuepl 144 1 0 0 1 0 1 1 0 8 0
pipelkpl 16 57 0 53 2 1 1 1 0 8 0
pipepl 120 114 0 107 2 1 1 1 0 8 0
fdescpl 432 177 0 166 2 0 2 2 0 8 0
filepl 120 826 0 781 2 0 2 2 0 8 0
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 112 17 0 9 1 0 1 1 0 8 0
pgrppl 48 17 0 9 1 0 1 1 0 8 0
ucredpl 96 57 0 50 1 0 1 1 0 8 0
zombiepl 144 166 0 166 2 2 0 1 0 8 0
processpl 920 191 0 166 4 0 4 4 0 8 0
procpl 624 192 0 166 3 0 3 3 0 8 0
sockpl 400 64 0 48 2 0 2 2 0 8 0
mcl4k 4096 10 0 10 2 2 0 1 0 8 0
mcl2k 2048 5944 0 5912 9 4 5 8 0 8 0
mtagpl 80 2 0 2 1 1 0 1 0 8 0
mbufpl 256 10169 0 10125 5 1 4 5 0 8 0
bufpl 280 1812 0 84 124 0 124 124 0 8 0
anonpl 16 17283 0 16137 7 2 5 7 0 107 0
amapchunkpl 152 468 0 430 2 0 2 2 0 158 0
amappl16 192 68 0 64 1 0 1 1 0 8 0
amappl15 184 1 0 0 1 0 1 1 0 8 0
amappl14 176 22 0 19 1 0 1 1 0 8 0
amappl13 168 12 0 11 2 1 1 1 0 8 0
amappl12 160 6 0 6 1 1 0 1 0 8 0
amappl11 152 38 0 29 1 0 1 1 0 8 0
amappl10 144 5 0 3 1 0 1 1 0 8 0
amappl9 136 198 0 197 1 0 1 1 0 8 0
amappl8 128 202 0 200 1 0 1 1 0 8 0
amappl7 120 81 0 72 1 0 1 1 0 8 0
amappl6 112 11 0 11 2 2 0 1 0 8 0
amappl5 104 190 0 181 1 0 1 1 0 8 0
amappl4 96 399 0 376 1 0 1 1 0 8 0
amappl3 88 97 0 91 1 0 1 1 0 8 0
amappl2 80 664 0 609 3 1 2 2 0 8 0
amappl1 72 12205 0 11810 16 7 9 16 0 8 0
amappl 80 355 0 335 1 0 1 1 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
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
uaddrrnd 24 177 0 166 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 177 0 166 1 0 1 1 0 8 0
vmmpekpl 168 5285 0 5268 1 0 1 1 0 8 0
vmmpepl 168 25723 0 24933 54 19 35 48 0 357 0
vmsppl 272 176 0 166 1 0 1 1 0 8 0
pdppl 4096 360 0 332 5 0 5 5 0 8 0
pvpl 32 70572 0 67814 31 8 23 26 0 265 0
pmappl 200 176 0 166 1 0 1 1 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 211 0 11 6 0 6 6 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff82248b59) at panic+0x15c sys/kern/subr_prf.c:207
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
splassert_fail(0,1,ffffffff8222174a) at splassert_fail+0x102 sys/kern/subr_prf.c:237
yield() at yield+0x6f sys/kern/sched_bsd.c:304
pool_get(ffffffff82584428,d) at pool_get+0x166 sys/kern/subr_pool.c:588
pfioctl(4900,cd604404,ffff8000006bf000,3,ffff80001d7a8390) at pfioctl+0x305e sys/net/pf_ioctl.c:1216
VOP_IOCTL(fffffd805dc40270,cd604404,ffff8000006bf000,3,fffffd806c3bfd20,ffff80001d7a8390) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd805d8cd4b8,cd604404,ffff8000006bf000,ffff80001d7a8390) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80001d7a8390,ffff80001d7ca668,ffff80001d7ca6b0) at sys_ioctl+0x4a1
syscall(ffff80001d7ca730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6ab108933d0, count: -11
end of kernel
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff82248b59) at panic+0x15c sys/kern/subr_prf.c:207
No such command
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
splassert_fail(0,1,ffffffff8222174a) at splassert_fail+0x102 sys/kern/subr_prf.c:237
yield() at yield+0x6f sys/kern/sched_bsd.c:304
pool_get(ffffffff82584428,d) at pool_get+0x166 sys/kern/subr_pool.c:588
pfioctl(4900,cd604404,ffff8000006bf000,3,ffff80001d7a8390) at pfioctl+0x305e sys/net/pf_ioctl.c:1216
VOP_IOCTL(fffffd805dc40270,cd604404,ffff8000006bf000,3,fffffd806c3bfd20,ffff80001d7a8390) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290
vn_ioctl(fffffd805d8cd4b8,cd604404,ffff8000006bf000,ffff80001d7a8390) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80001d7a8390,ffff80001d7ca668,ffff80001d7ca6b0) at sys_ioctl+0x4a1
syscall(ffff80001d7ca730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6ab108933d0, count: -11
end of kernel
Greg Steuck
Jul 13, 2020, 12:53:53 AM7/13/20
to syzbot, Anton Lindqvist, syzkaller-o...@googlegroups.com
Anton, do you know much about this bug? The C repro no longer works in -current.
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Anton Lindqvist
Jul 13, 2020, 7:15:00 AM7/13/20
to Greg Steuck, syzbot, syzkaller-o...@googlegroups.com
On Sun, Jul 12, 2020 at 09:53:42PM -0700, Greg Steuck wrote:
> Anton, do you know much about this bug? The C repro no longer works in
I haven't check and cannot provide any more info. Consider closing it if
> Anton, do you know much about this bug? The C repro no longer works in
the repro doesn't work anymore?
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