assert "!_kernel_lock_held()" failed in uvm_map.c (2)
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syzbot
Feb 20, 2023, 4:03:55 AM2/20/23
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 1e5b016c5082 sync for __syscall removal
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=13d1d290c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=169110a0815838ab5940
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/cb9a404e2563/disk-1e5b016c.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/27dc2036237a/bsd-1e5b016c.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ea0ea667b9fa/kernel-1e5b016c.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+169110...@syzkaller.appspotmail.com
ppanic: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_map.c", line 2539
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
91512 13444 0 0x2 0 0 syz-executor.5
*203577 38577 0 0x14000 0x200 1 reaper
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff827cd2be,ffffffff827d7b29,9eb,ffffffff827874a1) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd8079ba2528) at uvm_map_teardown+0x308 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd8079ba2528) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3516
reaper(ffff8000211bd058) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: 9
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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu0: vop_generic_badop
cpu1: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_map.c", line 2539
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff827cd2be,ffffffff827d7b29,9eb,ffffffff827874a1) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd8079ba2528) at uvm_map_teardown+0x308 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd8079ba2528) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3516
reaper(ffff8000211bd058) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: -6
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000211c90c0
rbx 0xffff800020d69b8f
rdx 0
rcx 0
rax 0xffff8000211bd058
r8 0x101010101010101
r9 0x8080808080808080
r10 0x314c5374c9689056
r11 0x5751184769d123ec
r12 0xffff800020d69990
r13 0
r14 0xffffffff82b25990 cpu_info_full_primary+0x2990
r15 0x1
rip 0xffffffff81b420b8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000211c90b0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (reaper) pid=203577 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=4, usrpri=59, nice=20
forw=0xffffffffffffffff, list=0xffff8000211bd5c8,0xffff8000211bcaf8
process=0xffff8000ffffee10 user=0xffff8000211c4000, vmspace=0xffffffff82db7ec8
estcpu=9, cpticks=9, pctcpu=0.93
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
84946 7161 51575 0 2 0 syz-executor.3
19110 86077 52029 0 3 0x80 nanoslp syz-executor.0
19110 244046 52029 0 3 0x4000080 fsleep syz-executor.0
19110 175849 52029 0 3 0x4000080 fsleep syz-executor.0
68039 88941 97854 0 3 0x80 nanoslp syz-executor.7
68039 187234 97854 0 2 0x4000000 syz-executor.7
68039 6043 97854 0 3 0x4000080 fsleep syz-executor.7
52029 31623 64124 0 3 0x82 nanoslp syz-executor.0
51575 156141 64124 0 3 0x82 nanoslp syz-executor.3
80121 453561 64124 0 2 0x2 syz-executor.4
66739 50574 64124 0 2 0x2 syz-executor.6
51057 486968 64124 0 3 0x82 nanoslp syz-executor.2
10434 10142 64124 0 3 0x2 biowait syz-executor.1
97854 329852 64124 0 3 0x82 nanoslp syz-executor.7
13444 91512 64124 0 7 0x2 syz-executor.5
93656 240797 1 0 3 0x100083 ttyin getty
99143 67738 0 0 3 0x14280 nfsidl nfsio
12104 367544 0 0 3 0x14280 nfsidl nfsio
56834 165088 0 0 3 0x14280 nfsidl nfsio
60882 216752 0 0 3 0x14280 nfsidl nfsio
34674 10022 0 0 3 0x14280 nfsidl nfsio
48908 461502 0 0 3 0x14280 nfsidl nfsio
9635 397420 0 0 3 0x14280 nfsidl nfsio
99959 179712 0 0 3 0x14280 nfsidl nfsio
10446 472957 0 0 3 0x14280 nfsidl nfsio
2035 122653 0 0 3 0x14280 nfsidl nfsio
9521 344857 0 0 3 0x14280 nfsidl nfsio
70334 143765 0 0 3 0x14280 nfsidl nfsio
25855 128588 0 0 3 0x14280 nfsidl nfsio
2782 288209 0 0 3 0x14280 nfsidl nfsio
11098 293876 0 0 3 0x14280 nfsidl nfsio
3458 395792 0 0 3 0x14280 nfsidl nfsio
42666 188868 0 0 3 0x14280 nfsidl nfsio
33432 50389 0 0 3 0x14280 nfsidl nfsio
19391 451921 0 0 3 0x14280 nfsidl nfsio
48761 253738 0 0 3 0x14280 nfsidl nfsio
91325 166792 0 0 3 0x14200 acct acct
67822 5527 0 0 3 0x14200 bored sosplice
64124 323196 90861 0 3 0x82 wait syz-fuzzer
64124 118079 90861 0 3 0x4000082 nanoslp syz-fuzzer
64124 47644 90861 0 3 0x4000082 wait syz-fuzzer
64124 146880 90861 0 3 0x4000082 wait syz-fuzzer
64124 146555 90861 0 3 0x4000082 wait syz-fuzzer
64124 209548 90861 0 3 0x4000082 thrsleep syz-fuzzer
64124 251960 90861 0 3 0x4000082 thrsleep syz-fuzzer
64124 28618 90861 0 3 0x4000082 wait syz-fuzzer
64124 97853 90861 0 3 0x4000082 thrsleep syz-fuzzer
64124 360674 90861 0 3 0x4000082 wait syz-fuzzer
64124 377611 90861 0 3 0x4000082 thrsleep syz-fuzzer
64124 395677 90861 0 3 0x4000082 kqread syz-fuzzer
64124 409981 90861 0 3 0x4000082 thrsleep syz-fuzzer
64124 226409 90861 0 3 0x4000082 thrsleep syz-fuzzer
64124 378571 90861 0 3 0x4000082 wait syz-fuzzer
64124 91868 90861 0 3 0x4000082 wait syz-fuzzer
90861 384841 52440 0 3 0x10008a sigsusp ksh
52440 134846 69692 0 3 0x9a kqread sshd
69692 478402 1 0 3 0x88 kqread sshd
79729 431872 91576 74 3 0x1100092 bpf pflogd
91576 10796 1 0 3 0x80 netio pflogd
48456 90682 9552 73 3 0x1100090 kqread syslogd
9552 96550 1 0 3 0x100082 netio syslogd
20401 397880 1 0 3 0x100080 kqread resolvd
46423 125932 0 0 3 0x14200 bored smr
42736 134201 0 0 2 0x14200 zerothread
74408 460871 0 0 3 0x14200 aiodoned aiodoned
69438 443592 0 0 3 0x14200 syncer update
78077 444684 0 0 3 0x14200 cleaner cleaner
*38577 203577 0 0 7 0x14200 reaper
65829 59075 0 0 3 0x14200 pgdaemon pagedaemon
63679 356994 0 0 3 0x14200 bored viomb
87366 4105 0 0 3 0x40014200 acpi0 acpi0
35659 85280 0 0 3 0x40014200 idle1
83522 189665 0 0 3 0x14200 bored softnet
13503 157767 0 0 3 0x14200 bored softnet
88726 500570 0 0 3 0x14200 bored softnet
9667 483719 0 0 3 0x14200 bored softnet
74106 283711 0 0 3 0x14200 bored systqmp
28877 1914 0 0 3 0x14200 bored systq
76870 375929 0 0 3 0x40014200 bored softclock
35503 406853 0 0 3 0x40014200 idle0
1 335708 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10240 6520K 7353K 78643K 19435 0
pcb 13 18K 23K 78643K 1020 0
rtable 208 16K 18K 78643K 1739 0
ifaddr 87 27K 29K 78643K 653 0
sysctl 3 1K 3K 78643K 8 0
counters 60 35K 36K 78643K 494 0
ioctlops 0 0K 4K 78643K 2070 0
iov 0 0K 32K 78643K 591 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1395 87K 88K 78643K 4187 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 44 0
VM map 2 1K 1K 78643K 2 0
sem 11 1K 1K 78643K 17 0
dirhash 63 11K 12K 78643K 411 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 13 45K 93K 78643K 6635 0
sigio 0 0K 0K 78643K 299 0
proc 66 67K 115K 78643K 1551 0
subproc 104 6K 6K 78643K 482 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 248 0
in_multi 85 5K 7K 78643K 657 0
ether_multi 1 0K 0K 78643K 34 0
mrt 1 0K 0K 78643K 29 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 217 970K 970K 78643K 217 0
exec 0 0K 1K 78643K 1341 0
tdb 3 0K 0K 78643K 3 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 8 62K 64K 78643K 10 0
UVM amap 333 90K 97K 78643K 46953 0
UVM aobj 131 4K 4K 78643K 143 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 311 0
NDP 16 0K 2K 78643K 221 0
temp 145 5778K 5854K 78643K 78767 0
kqueue 6 10K 24K 78643K 466 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 683 0 682 10 9 1 3 0 8 0
rtentry 112 582 0 498 5 2 3 4 0 8 0
unpcb 144 6304 0 6296 67 66 1 8 0 8 0
syncache 296 48 0 48 10 10 0 1 0 8 0
tcpqe 32 50 46 50 4 4 0 1 0 8 0
tcpcb 776 3316 0 3307 82 74 8 14 0 8 6
arp 120 82 0 68 1 0 1 1 0 8 0
inpcb 368 8666 0 8654 106 99 7 14 0 8 5
nd6 48 127 0 108 1 0 1 1 0 8 0
pkpcb 40 3 0 3 1 1 0 1 0 8 0
kcovpl 48 36 0 28 1 0 1 1 0 8 0
mppekey 1024 5 0 5 2 2 0 1 0 8 0
ppxss 1256 124 0 124 10 10 0 1 0 8 0
pppxif 1456 98 0 98 9 9 0 1 0 8 0
pfstscr 40 3 0 3 1 1 0 1 0 8 0
pffrag 232 33 0 33 2 2 0 1 0 482 0
pffrnode 88 33 0 33 2 2 0 1 0 8 0
pffrent 40 88 0 88 2 2 0 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 187 0 153 1 0 1 1 0 8 0
pfstkey 128 191 0 157 4 2 2 2 0 8 0
pfstate 384 188 0 154 10 6 4 5 0 8 0
pfrule 1344 21 0 16 2 1 1 2 0 8 0
rttmr 136 8 0 8 3 3 0 1 0 8 0
art_heap8 4096 4 0 2 4 2 2 3 0 8 0
art_heap4 256 2649 0 2241 56 27 29 33 0 8 1
art_table 32 2653 0 2243 6 1 5 5 0 8 0
art_node 16 575 0 503 1 0 1 1 0 8 0
sysvmsgpl 40 10 0 7 1 0 1 1 0 8 0
semapl 112 9 0 0 1 0 1 1 0 8 0
shmpl 112 140 0 12 4 0 4 4 0 8 0
dirhash 1024 150 0 116 5 0 5 5 0 8 0
dino2pl 256 9910 0 8446 92 0 92 92 0 8 0
ffsino 272 9910 0 8446 98 0 98 98 0 8 0
nchpl 144 18747 0 17113 63 0 63 63 0 8 0
rtmask 32 4 0 4 2 2 0 1 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 216 5926 0 0 330 0 330 330 0 8 0
namei 1024 71252 0 71250 3 2 1 2 0 8 0
percpumem 16 260 0 217 1 0 1 1 0 8 0
vmpool 696 45 0 45 3 3 0 1 0 8 0
kstatmem 264 262 0 230 6 3 3 3 0 8 0
scsiplug 72 7 0 7 2 2 0 1 0 8 0
scxspl 216 57364 0 57363 26 25 1 8 0 8 0
plimitpl 152 907 0 892 1 0 1 1 0 8 0
sigapl 424 6978 0 6915 11 3 8 9 0 8 0
futexpl 64 60531 0 60528 2 1 1 1 0 8 0
knotepl 120 568 0 0 11 0 11 11 0 8 0
kqueuepl 216 1381 0 1375 22 21 1 5 0 8 0
pipepl 320 2221 0 2193 51 48 3 8 0 8 0
fdescpl 496 6870 0 6847 5 1 4 5 0 8 0
filepl 152 54309 0 54017 99 86 13 22 0 8 1
lockfpl 104 2520 0 2519 3 2 1 2 0 8 0
lockfspl 48 519 0 518 1 0 1 1 0 8 0
sessionpl 144 53 0 37 1 0 1 1 0 8 0
pgrppl 48 171 0 155 1 0 1 1 0 8 0
ucredpl 104 5061 0 5051 1 0 1 1 0 8 0
zombiepl 144 6916 0 6915 2 1 1 1 0 8 0
processpl 1072 6978 0 6915 6 1 5 6 0 8 0
procpl 696 18694 0 18612 20 10 10 10 0 8 0
srpgc 96 44 0 44 12 12 0 1 0 8 0
sosppl 168 55 0 55 7 7 0 1 0 8 0
sockpl 488 15662 0 15641 322 311 11 27 0 8 8
mcl64k 65536 17 0 0 3 0 3 3 0 8 0
mcl16k 16384 17 0 0 3 0 3 3 0 8 0
mcl12k 12288 25 0 0 2 0 2 2 0 8 0
mcl9k 9216 15 0 0 2 0 2 2 0 8 0
mcl8k 8192 25 0 0 3 0 3 3 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 7 0 0 1 0 1 1 0 8 0
mcl2k 2048 503 0 0 62 4 58 62 0 8 0
mtagpl 96 463 0 0 11 0 11 11 0 8 0
mbufpl 256 1423 0 0 76 0 76 76 0 8 0
bufpl 288 13771 0 7446 453 0 453 453 0 8 0
anonpl 24 1418945 0 1401549 219 94 125 192 0 186 0
amapchunkpl 152 131726 0 130982 71 37 34 63 0 158 0
amappl16 200 12833 0 12253 84 53 31 43 0 8 0
amappl15 192 53 0 50 1 0 1 1 0 8 0
amappl14 184 261 0 246 2 0 2 2 0 8 0
amappl13 176 4 0 4 2 2 0 1 0 8 0
amappl12 168 750 0 747 1 0 1 1 0 8 0
amappl11 160 51 0 43 1 0 1 1 0 8 0
amappl10 152 79 0 67 1 0 1 1 0 8 0
amappl9 144 1003 0 1003 12 12 0 1 0 8 0
amappl8 136 473 0 374 4 0 4 4 0 8 0
amappl7 128 240 0 214 2 0 2 2 0 8 0
amappl6 120 320 0 302 2 1 1 2 0 8 0
amappl5 112 333 0 326 1 0 1 1 0 8 0
amappl4 104 869 0 833 6 4 2 2 0 8 0
amappl3 96 19958 0 19917 2 0 2 2 0 8 0
amappl2 88 7715 0 7649 4 2 2 4 0 8 0
amappl1 80 157955 0 157338 31 15 16 28 0 8 0
amappl 88 45993 0 45808 8 2 6 6 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 142 0 12 3 0 3 3 0 8 0
uaddrrnd 24 6915 0 6891 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 6915 0 6891 1 0 1 1 0 8 0
vmmpekpl 168 61360 0 61295 4 0 4 4 0 8 0
vmmpepl 168 641641 0 639132 217 82 135 146 0 357 0
vmsppl 440 6914 0 6891 6 2 4 5 0 8 0
rwobjpl 56 173177 0 165485 119 7 112 113 0 8 0
pdppl 4096 13837 0 13782 401 338 63 83 0 8 8
pvpl 32 2811409 0 2789115 486 278 208 366 0 265 0
pmappl 248 6914 0 6891 3 1 2 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1383 0 486 26 0 26 26 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff82b24ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:578 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:148
__mp_lock(ffffffff82db6020) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82db6020) at __mp_lock+0x133 sys/kern/kern_lock.c:147
intr_handler(ffff80002e424870,ffff80000006ba00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
Xspllower() at Xspllower+0x19
cnputc(70) at cnputc+0x4b sys/dev/cons.c:218
db_putchar(70) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:724
db_printf(ffffffff827d3cc9) at db_printf+0x85 sys/kern/subr_prf.c:498
panic(ffffffff82742aec) at panic+0xd7 sys/kern/subr_prf.c:216
vop_generic_badop(ffff80002e424c98) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133
end trace frame: 0xffff80002e424ce0, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff82b24ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:578 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:148
__mp_lock(ffffffff82db6020) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82db6020) at __mp_lock+0x133 sys/kern/kern_lock.c:147
intr_handler(ffff80002e424870,ffff80000006ba00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
Xspllower() at Xspllower+0x19
cnputc(70) at cnputc+0x4b sys/dev/cons.c:218
db_putchar(70) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:724
db_printf(ffffffff827d3cc9) at db_printf+0x85 sys/kern/subr_prf.c:498
panic(ffffffff82742aec) at panic+0xd7 sys/kern/subr_prf.c:216
vop_generic_badop(ffff80002e424c98) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133
VOP_STRATEGY(fffffd806f851958,fffffd807d688a40) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628
bwrite(fffffd807d688a40) at bwrite+0x1f0 sys/kern/vfs_bio.c:760
VOP_BWRITE(fffffd807d688a40) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640
ufs_mkdir(ffff80002e424f30) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236
VOP_MKDIR(fffffd806558d548,ffff80002e425090,ffff80002e4250c0,ffff80002e424fc0) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
domkdirat(ffff8000212d1080,ffffff9c,7f7fffffb7d0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112
syscall(ffff80002e425240) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff80002e425240) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffffb840, count: -22
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff827cd2be,ffffffff827d7b29,9eb,ffffffff827874a1) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd8079ba2528) at uvm_map_teardown+0x308 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd8079ba2528) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3516
reaper(ffff8000211bd058) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: 9
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff827cd2be,ffffffff827d7b29,9eb,ffffffff827874a1) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd8079ba2528) at uvm_map_teardown+0x308 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd8079ba2528) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3516
reaper(ffff8000211bd058) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: -6
---
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syzbot found the following issue on:
HEAD commit: 1e5b016c5082 sync for __syscall removal
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=13d1d290c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=169110a0815838ab5940
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/cb9a404e2563/disk-1e5b016c.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/27dc2036237a/bsd-1e5b016c.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ea0ea667b9fa/kernel-1e5b016c.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+169110...@syzkaller.appspotmail.com
ppanic: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_map.c", line 2539
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
91512 13444 0 0x2 0 0 syz-executor.5
*203577 38577 0 0x14000 0x200 1 reaper
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff827cd2be,ffffffff827d7b29,9eb,ffffffff827874a1) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd8079ba2528) at uvm_map_teardown+0x308 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd8079ba2528) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3516
reaper(ffff8000211bd058) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: 9
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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu0: vop_generic_badop
cpu1: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_map.c", line 2539
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff827cd2be,ffffffff827d7b29,9eb,ffffffff827874a1) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd8079ba2528) at uvm_map_teardown+0x308 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd8079ba2528) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3516
reaper(ffff8000211bd058) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: -6
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000211c90c0
rbx 0xffff800020d69b8f
rdx 0
rcx 0
rax 0xffff8000211bd058
r8 0x101010101010101
r9 0x8080808080808080
r10 0x314c5374c9689056
r11 0x5751184769d123ec
r12 0xffff800020d69990
r13 0
r14 0xffffffff82b25990 cpu_info_full_primary+0x2990
r15 0x1
rip 0xffffffff81b420b8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000211c90b0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (reaper) pid=203577 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=4, usrpri=59, nice=20
forw=0xffffffffffffffff, list=0xffff8000211bd5c8,0xffff8000211bcaf8
process=0xffff8000ffffee10 user=0xffff8000211c4000, vmspace=0xffffffff82db7ec8
estcpu=9, cpticks=9, pctcpu=0.93
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
84946 7161 51575 0 2 0 syz-executor.3
19110 86077 52029 0 3 0x80 nanoslp syz-executor.0
19110 244046 52029 0 3 0x4000080 fsleep syz-executor.0
19110 175849 52029 0 3 0x4000080 fsleep syz-executor.0
68039 88941 97854 0 3 0x80 nanoslp syz-executor.7
68039 187234 97854 0 2 0x4000000 syz-executor.7
68039 6043 97854 0 3 0x4000080 fsleep syz-executor.7
52029 31623 64124 0 3 0x82 nanoslp syz-executor.0
51575 156141 64124 0 3 0x82 nanoslp syz-executor.3
80121 453561 64124 0 2 0x2 syz-executor.4
66739 50574 64124 0 2 0x2 syz-executor.6
51057 486968 64124 0 3 0x82 nanoslp syz-executor.2
10434 10142 64124 0 3 0x2 biowait syz-executor.1
97854 329852 64124 0 3 0x82 nanoslp syz-executor.7
13444 91512 64124 0 7 0x2 syz-executor.5
93656 240797 1 0 3 0x100083 ttyin getty
99143 67738 0 0 3 0x14280 nfsidl nfsio
12104 367544 0 0 3 0x14280 nfsidl nfsio
56834 165088 0 0 3 0x14280 nfsidl nfsio
60882 216752 0 0 3 0x14280 nfsidl nfsio
34674 10022 0 0 3 0x14280 nfsidl nfsio
48908 461502 0 0 3 0x14280 nfsidl nfsio
9635 397420 0 0 3 0x14280 nfsidl nfsio
99959 179712 0 0 3 0x14280 nfsidl nfsio
10446 472957 0 0 3 0x14280 nfsidl nfsio
2035 122653 0 0 3 0x14280 nfsidl nfsio
9521 344857 0 0 3 0x14280 nfsidl nfsio
70334 143765 0 0 3 0x14280 nfsidl nfsio
25855 128588 0 0 3 0x14280 nfsidl nfsio
2782 288209 0 0 3 0x14280 nfsidl nfsio
11098 293876 0 0 3 0x14280 nfsidl nfsio
3458 395792 0 0 3 0x14280 nfsidl nfsio
42666 188868 0 0 3 0x14280 nfsidl nfsio
33432 50389 0 0 3 0x14280 nfsidl nfsio
19391 451921 0 0 3 0x14280 nfsidl nfsio
48761 253738 0 0 3 0x14280 nfsidl nfsio
91325 166792 0 0 3 0x14200 acct acct
67822 5527 0 0 3 0x14200 bored sosplice
64124 323196 90861 0 3 0x82 wait syz-fuzzer
64124 118079 90861 0 3 0x4000082 nanoslp syz-fuzzer
64124 47644 90861 0 3 0x4000082 wait syz-fuzzer
64124 146880 90861 0 3 0x4000082 wait syz-fuzzer
64124 146555 90861 0 3 0x4000082 wait syz-fuzzer
64124 209548 90861 0 3 0x4000082 thrsleep syz-fuzzer
64124 251960 90861 0 3 0x4000082 thrsleep syz-fuzzer
64124 28618 90861 0 3 0x4000082 wait syz-fuzzer
64124 97853 90861 0 3 0x4000082 thrsleep syz-fuzzer
64124 360674 90861 0 3 0x4000082 wait syz-fuzzer
64124 377611 90861 0 3 0x4000082 thrsleep syz-fuzzer
64124 395677 90861 0 3 0x4000082 kqread syz-fuzzer
64124 409981 90861 0 3 0x4000082 thrsleep syz-fuzzer
64124 226409 90861 0 3 0x4000082 thrsleep syz-fuzzer
64124 378571 90861 0 3 0x4000082 wait syz-fuzzer
64124 91868 90861 0 3 0x4000082 wait syz-fuzzer
90861 384841 52440 0 3 0x10008a sigsusp ksh
52440 134846 69692 0 3 0x9a kqread sshd
69692 478402 1 0 3 0x88 kqread sshd
79729 431872 91576 74 3 0x1100092 bpf pflogd
91576 10796 1 0 3 0x80 netio pflogd
48456 90682 9552 73 3 0x1100090 kqread syslogd
9552 96550 1 0 3 0x100082 netio syslogd
20401 397880 1 0 3 0x100080 kqread resolvd
46423 125932 0 0 3 0x14200 bored smr
42736 134201 0 0 2 0x14200 zerothread
74408 460871 0 0 3 0x14200 aiodoned aiodoned
69438 443592 0 0 3 0x14200 syncer update
78077 444684 0 0 3 0x14200 cleaner cleaner
*38577 203577 0 0 7 0x14200 reaper
65829 59075 0 0 3 0x14200 pgdaemon pagedaemon
63679 356994 0 0 3 0x14200 bored viomb
87366 4105 0 0 3 0x40014200 acpi0 acpi0
35659 85280 0 0 3 0x40014200 idle1
83522 189665 0 0 3 0x14200 bored softnet
13503 157767 0 0 3 0x14200 bored softnet
88726 500570 0 0 3 0x14200 bored softnet
9667 483719 0 0 3 0x14200 bored softnet
74106 283711 0 0 3 0x14200 bored systqmp
28877 1914 0 0 3 0x14200 bored systq
76870 375929 0 0 3 0x40014200 bored softclock
35503 406853 0 0 3 0x40014200 idle0
1 335708 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10240 6520K 7353K 78643K 19435 0
pcb 13 18K 23K 78643K 1020 0
rtable 208 16K 18K 78643K 1739 0
ifaddr 87 27K 29K 78643K 653 0
sysctl 3 1K 3K 78643K 8 0
counters 60 35K 36K 78643K 494 0
ioctlops 0 0K 4K 78643K 2070 0
iov 0 0K 32K 78643K 591 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1395 87K 88K 78643K 4187 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 44 0
VM map 2 1K 1K 78643K 2 0
sem 11 1K 1K 78643K 17 0
dirhash 63 11K 12K 78643K 411 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 13 45K 93K 78643K 6635 0
sigio 0 0K 0K 78643K 299 0
proc 66 67K 115K 78643K 1551 0
subproc 104 6K 6K 78643K 482 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 248 0
in_multi 85 5K 7K 78643K 657 0
ether_multi 1 0K 0K 78643K 34 0
mrt 1 0K 0K 78643K 29 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 217 970K 970K 78643K 217 0
exec 0 0K 1K 78643K 1341 0
tdb 3 0K 0K 78643K 3 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 8 62K 64K 78643K 10 0
UVM amap 333 90K 97K 78643K 46953 0
UVM aobj 131 4K 4K 78643K 143 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 311 0
NDP 16 0K 2K 78643K 221 0
temp 145 5778K 5854K 78643K 78767 0
kqueue 6 10K 24K 78643K 466 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 683 0 682 10 9 1 3 0 8 0
rtentry 112 582 0 498 5 2 3 4 0 8 0
unpcb 144 6304 0 6296 67 66 1 8 0 8 0
syncache 296 48 0 48 10 10 0 1 0 8 0
tcpqe 32 50 46 50 4 4 0 1 0 8 0
tcpcb 776 3316 0 3307 82 74 8 14 0 8 6
arp 120 82 0 68 1 0 1 1 0 8 0
inpcb 368 8666 0 8654 106 99 7 14 0 8 5
nd6 48 127 0 108 1 0 1 1 0 8 0
pkpcb 40 3 0 3 1 1 0 1 0 8 0
kcovpl 48 36 0 28 1 0 1 1 0 8 0
mppekey 1024 5 0 5 2 2 0 1 0 8 0
ppxss 1256 124 0 124 10 10 0 1 0 8 0
pppxif 1456 98 0 98 9 9 0 1 0 8 0
pfstscr 40 3 0 3 1 1 0 1 0 8 0
pffrag 232 33 0 33 2 2 0 1 0 482 0
pffrnode 88 33 0 33 2 2 0 1 0 8 0
pffrent 40 88 0 88 2 2 0 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 187 0 153 1 0 1 1 0 8 0
pfstkey 128 191 0 157 4 2 2 2 0 8 0
pfstate 384 188 0 154 10 6 4 5 0 8 0
pfrule 1344 21 0 16 2 1 1 2 0 8 0
rttmr 136 8 0 8 3 3 0 1 0 8 0
art_heap8 4096 4 0 2 4 2 2 3 0 8 0
art_heap4 256 2649 0 2241 56 27 29 33 0 8 1
art_table 32 2653 0 2243 6 1 5 5 0 8 0
art_node 16 575 0 503 1 0 1 1 0 8 0
sysvmsgpl 40 10 0 7 1 0 1 1 0 8 0
semapl 112 9 0 0 1 0 1 1 0 8 0
shmpl 112 140 0 12 4 0 4 4 0 8 0
dirhash 1024 150 0 116 5 0 5 5 0 8 0
dino2pl 256 9910 0 8446 92 0 92 92 0 8 0
ffsino 272 9910 0 8446 98 0 98 98 0 8 0
nchpl 144 18747 0 17113 63 0 63 63 0 8 0
rtmask 32 4 0 4 2 2 0 1 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 216 5926 0 0 330 0 330 330 0 8 0
namei 1024 71252 0 71250 3 2 1 2 0 8 0
percpumem 16 260 0 217 1 0 1 1 0 8 0
vmpool 696 45 0 45 3 3 0 1 0 8 0
kstatmem 264 262 0 230 6 3 3 3 0 8 0
scsiplug 72 7 0 7 2 2 0 1 0 8 0
scxspl 216 57364 0 57363 26 25 1 8 0 8 0
plimitpl 152 907 0 892 1 0 1 1 0 8 0
sigapl 424 6978 0 6915 11 3 8 9 0 8 0
futexpl 64 60531 0 60528 2 1 1 1 0 8 0
knotepl 120 568 0 0 11 0 11 11 0 8 0
kqueuepl 216 1381 0 1375 22 21 1 5 0 8 0
pipepl 320 2221 0 2193 51 48 3 8 0 8 0
fdescpl 496 6870 0 6847 5 1 4 5 0 8 0
filepl 152 54309 0 54017 99 86 13 22 0 8 1
lockfpl 104 2520 0 2519 3 2 1 2 0 8 0
lockfspl 48 519 0 518 1 0 1 1 0 8 0
sessionpl 144 53 0 37 1 0 1 1 0 8 0
pgrppl 48 171 0 155 1 0 1 1 0 8 0
ucredpl 104 5061 0 5051 1 0 1 1 0 8 0
zombiepl 144 6916 0 6915 2 1 1 1 0 8 0
processpl 1072 6978 0 6915 6 1 5 6 0 8 0
procpl 696 18694 0 18612 20 10 10 10 0 8 0
srpgc 96 44 0 44 12 12 0 1 0 8 0
sosppl 168 55 0 55 7 7 0 1 0 8 0
sockpl 488 15662 0 15641 322 311 11 27 0 8 8
mcl64k 65536 17 0 0 3 0 3 3 0 8 0
mcl16k 16384 17 0 0 3 0 3 3 0 8 0
mcl12k 12288 25 0 0 2 0 2 2 0 8 0
mcl9k 9216 15 0 0 2 0 2 2 0 8 0
mcl8k 8192 25 0 0 3 0 3 3 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 7 0 0 1 0 1 1 0 8 0
mcl2k 2048 503 0 0 62 4 58 62 0 8 0
mtagpl 96 463 0 0 11 0 11 11 0 8 0
mbufpl 256 1423 0 0 76 0 76 76 0 8 0
bufpl 288 13771 0 7446 453 0 453 453 0 8 0
anonpl 24 1418945 0 1401549 219 94 125 192 0 186 0
amapchunkpl 152 131726 0 130982 71 37 34 63 0 158 0
amappl16 200 12833 0 12253 84 53 31 43 0 8 0
amappl15 192 53 0 50 1 0 1 1 0 8 0
amappl14 184 261 0 246 2 0 2 2 0 8 0
amappl13 176 4 0 4 2 2 0 1 0 8 0
amappl12 168 750 0 747 1 0 1 1 0 8 0
amappl11 160 51 0 43 1 0 1 1 0 8 0
amappl10 152 79 0 67 1 0 1 1 0 8 0
amappl9 144 1003 0 1003 12 12 0 1 0 8 0
amappl8 136 473 0 374 4 0 4 4 0 8 0
amappl7 128 240 0 214 2 0 2 2 0 8 0
amappl6 120 320 0 302 2 1 1 2 0 8 0
amappl5 112 333 0 326 1 0 1 1 0 8 0
amappl4 104 869 0 833 6 4 2 2 0 8 0
amappl3 96 19958 0 19917 2 0 2 2 0 8 0
amappl2 88 7715 0 7649 4 2 2 4 0 8 0
amappl1 80 157955 0 157338 31 15 16 28 0 8 0
amappl 88 45993 0 45808 8 2 6 6 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 142 0 12 3 0 3 3 0 8 0
uaddrrnd 24 6915 0 6891 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 6915 0 6891 1 0 1 1 0 8 0
vmmpekpl 168 61360 0 61295 4 0 4 4 0 8 0
vmmpepl 168 641641 0 639132 217 82 135 146 0 357 0
vmsppl 440 6914 0 6891 6 2 4 5 0 8 0
rwobjpl 56 173177 0 165485 119 7 112 113 0 8 0
pdppl 4096 13837 0 13782 401 338 63 83 0 8 8
pvpl 32 2811409 0 2789115 486 278 208 366 0 265 0
pmappl 248 6914 0 6891 3 1 2 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1383 0 486 26 0 26 26 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff82b24ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:578 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:148
__mp_lock(ffffffff82db6020) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82db6020) at __mp_lock+0x133 sys/kern/kern_lock.c:147
intr_handler(ffff80002e424870,ffff80000006ba00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
Xspllower() at Xspllower+0x19
cnputc(70) at cnputc+0x4b sys/dev/cons.c:218
db_putchar(70) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:724
db_printf(ffffffff827d3cc9) at db_printf+0x85 sys/kern/subr_prf.c:498
panic(ffffffff82742aec) at panic+0xd7 sys/kern/subr_prf.c:216
vop_generic_badop(ffff80002e424c98) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133
end trace frame: 0xffff80002e424ce0, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff82b24ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:578 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:148
__mp_lock(ffffffff82db6020) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82db6020) at __mp_lock+0x133 sys/kern/kern_lock.c:147
intr_handler(ffff80002e424870,ffff80000006ba00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
Xspllower() at Xspllower+0x19
cnputc(70) at cnputc+0x4b sys/dev/cons.c:218
db_putchar(70) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:724
db_printf(ffffffff827d3cc9) at db_printf+0x85 sys/kern/subr_prf.c:498
panic(ffffffff82742aec) at panic+0xd7 sys/kern/subr_prf.c:216
vop_generic_badop(ffff80002e424c98) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133
VOP_STRATEGY(fffffd806f851958,fffffd807d688a40) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628
bwrite(fffffd807d688a40) at bwrite+0x1f0 sys/kern/vfs_bio.c:760
VOP_BWRITE(fffffd807d688a40) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640
ufs_mkdir(ffff80002e424f30) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236
VOP_MKDIR(fffffd806558d548,ffff80002e425090,ffff80002e4250c0,ffff80002e424fc0) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
domkdirat(ffff8000212d1080,ffffff9c,7f7fffffb7d0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112
syscall(ffff80002e425240) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff80002e425240) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffffb840, count: -22
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff827cd2be,ffffffff827d7b29,9eb,ffffffff827874a1) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd8079ba2528) at uvm_map_teardown+0x308 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd8079ba2528) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3516
reaper(ffff8000211bd058) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: 9
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff827cd2be,ffffffff827d7b29,9eb,ffffffff827874a1) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd8079ba2528) at uvm_map_teardown+0x308 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd8079ba2528) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3516
reaper(ffff8000211bd058) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: -6
---
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