uvm_fault: softclock (3)
0 views
Skip to first unread message
syzbot
Aug 24, 2023, 10:26:58 AM8/24/23
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 229d624cca26 Update references from RFC 7539 to RFC 8439
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=11b0a40ba80000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=e831b6ab0f47caff6bf5
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/ae1c2d3f9a71/disk-229d624c.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/02ad8df0a7c2/bsd-229d624c.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b80923a90b84/kernel-229d624c.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e831b6...@syzkaller.appspotmail.com
uvm_fault(0xffffffff82caaf60, 0x8, 0, 2) -> e
kernel: page fault trap, code=2
Stopped at softclock+0xc7: movq %rcx,0x8(%rax)
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*208014 73669 0 0x14000 0x200 0K reaper
softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:712
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
uvm_anfree_list(fffffd807648fc78,ffff8000211b9548) at uvm_anfree_list+0x9c
amap_wipeout(fffffd806996e858) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211b9610,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806efdd578) at uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806efdd578) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211acda0) at reaper+0x19a sys/kern/kern_exit.c:449
end trace frame: 0x0, 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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: uvm_fault(0xffffffff82caaf60, 0x8, 0, 2) -> e
ddb{0}> trace
softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:712
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
uvm_anfree_list(fffffd807648fc78,ffff8000211b9548) at uvm_anfree_list+0x9c
amap_wipeout(fffffd806996e858) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211b9610,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806efdd578) at uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806efdd578) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211acda0) at reaper+0x19a sys/kern/kern_exit.c:449
end trace frame: 0x0, count: -10
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000211b9380
rbx 0x1
rdx 0
rcx 0xffffffff82cd53b0 timeout_todo
rax 0
r8 0xf4
r9 0xf4
r10 0x340187186feea20a
r11 0xb5d9be65419080a
r12 0xffffffff
r13 0xffffffff82c9ad00 rdrand_tmo
r14 0
r15 0xfffffd8065d6fdf0
rip 0xffffffff81f94087 softclock+0xc7
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff8000211b9340
ss 0x10
softclock+0xc7: movq %rcx,0x8(%rax)
ddb{0}> show proc
PROC (reaper) pid=208014 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=4, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff8000211ad058,0xffff8000211acaf8
process=0xffff8000fffff240 user=0xffff8000211b4000, vmspace=0xffffffff82caaf60
estcpu=0, cpticks=0, pctcpu=0.54
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
33635 214238 6186 0 3 0x80 nanoslp syz-executor.4
33635 73409 6186 0 3 0x4000080 kqread syz-executor.4
33635 494799 6186 0 3 0x4000080 kqread syz-executor.4
33635 102738 6186 0 3 0x4000080 fsleep syz-executor.4
50008 146260 96030 0 2 0 syz-executor.2
50008 217894 96030 0 3 0x4000080 fsleep syz-executor.2
17047 222734 53360 0 2 0 syz-executor.3
17047 487530 53360 0 3 0x4000080 fsleep syz-executor.3
17047 428359 53360 0 3 0x4000080 fsleep syz-executor.3
12943 115434 91180 0 2 0 syz-executor.7
12943 289141 91180 0 3 0x4000080 lockf syz-executor.7
12943 334634 91180 0 3 0x4000080 lockf syz-executor.7
29576 158453 0 0 3 0x14200 acct acct
6186 181624 1431 0 2 0x482 syz-executor.4
53360 320103 1431 0 3 0x82 nanoslp syz-executor.3
50085 315713 1431 0 3 0x82 nanoslp syz-executor.5
57991 518758 0 0 3 0x14280 nfsidl nfsio
37592 23924 0 0 3 0x14280 nfsidl nfsio
22712 141560 0 0 3 0x14280 nfsidl nfsio
83395 286468 0 0 3 0x14280 nfsidl nfsio
33320 424833 0 0 3 0x14280 nfsidl nfsio
28400 404358 0 0 3 0x14280 nfsidl nfsio
33947 445503 0 0 3 0x14280 nfsidl nfsio
49899 101942 0 0 3 0x14280 nfsidl nfsio
6150 20571 0 0 3 0x14280 nfsidl nfsio
4132 472525 0 0 3 0x14280 nfsidl nfsio
8586 36115 0 0 3 0x14280 nfsidl nfsio
2671 454881 0 0 3 0x14280 nfsidl nfsio
34292 218426 0 0 3 0x14280 nfsidl nfsio
43278 175012 0 0 3 0x14280 nfsidl nfsio
56635 227158 0 0 3 0x14280 nfsidl nfsio
1640 478868 0 0 3 0x14280 nfsidl nfsio
6605 514334 0 0 3 0x14280 nfsidl nfsio
72646 88310 0 0 3 0x14280 nfsidl nfsio
23519 224244 0 0 3 0x14280 nfsidl nfsio
67459 346570 0 0 3 0x14280 nfsidl nfsio
17780 86813 1431 0 3 0x82 nanoslp syz-executor.0
8285 63767 1431 0 2 0x2 syz-executor.6
96030 349255 1431 0 2 0x482 syz-executor.2
83735 181127 1 0 3 0x100083 ttyopn getty
91180 324480 1431 0 2 0x482 syz-executor.7
34355 300760 1431 0 2 0x482 syz-executor.1
57249 158670 0 0 3 0x14200 bored sosplice
1431 125156 94933 0 3 0x2000082 thrsleep syz-fuzzer
1431 360977 94933 0 3 0x6000082 nanoslp syz-fuzzer
1431 21614 94933 0 3 0x6000082 thrsleep syz-fuzzer
1431 224966 94933 0 3 0x6000082 wait syz-fuzzer
1431 256164 94933 0 3 0x6000082 wait syz-fuzzer
1431 146409 94933 0 3 0x6000082 thrsleep syz-fuzzer
1431 187910 94933 0 3 0x6000082 kqread syz-fuzzer
1431 251064 94933 0 3 0x6000082 wait syz-fuzzer
1431 6240 94933 0 3 0x6000082 thrsleep syz-fuzzer
1431 37312 94933 0 3 0x6000082 thrsleep syz-fuzzer
1431 173500 94933 0 3 0x6000082 thrsleep syz-fuzzer
1431 248486 94933 0 3 0x6000082 wait syz-fuzzer
1431 506723 94933 0 3 0x6000082 wait syz-fuzzer
1431 513846 94933 0 3 0x6000082 thrsleep syz-fuzzer
1431 187493 94933 0 3 0x6000082 wait syz-fuzzer
1431 44454 94933 0 3 0x6000082 wait syz-fuzzer
1431 137186 94933 0 3 0x6000082 wait syz-fuzzer
94933 466795 12583 0 3 0x10008a sigsusp ksh
12583 348760 58808 0 3 0x9a kqread sshd
58808 196508 1 0 3 0x88 kqread sshd
44474 305818 6502 74 3 0x1100092 bpf pflogd
6502 53397 1 0 3 0x80 netio pflogd
36561 243063 96147 73 3 0x1100090 kqread syslogd
96147 146040 1 0 3 0x100082 netio syslogd
71685 33360 1 0 3 0x100080 kqread resolvd
12736 308440 88083 77 3 0x100092 kqread dhcpleased
14703 186997 88083 77 3 0x100092 kqread dhcpleased
88083 335988 1 0 3 0x80 kqread dhcpleased
78550 74744 0 0 3 0x14200 bored smr
69002 218339 0 0 2 0x14200 zerothread
13296 7234 0 0 3 0x14200 aiodoned aiodoned
80224 337149 0 0 3 0x14200 syncer update
80090 287139 0 0 3 0x14200 cleaner cleaner
*73669 208014 0 0 7 0x14200 reaper
24661 305639 0 0 3 0x14200 pgdaemon pagedaemon
98393 249864 0 0 3 0x14200 bored viomb
36695 27933 0 0 3 0x40014200 acpi0 acpi0
50987 332662 0 0 7 0x40014200 idle1
39301 79919 0 0 3 0x14200 bored softnet3
17507 90126 0 0 3 0x14200 bored softnet2
45072 75455 0 0 3 0x14200 bored softnet1
15736 123192 0 0 3 0x14200 bored softnet0
13277 310734 0 0 3 0x14200 bored systqmp
85345 267416 0 0 3 0x14200 bored systq
95822 336637 0 0 3 0x40014200 bored softclock
58307 224105 0 0 3 0x40014200 idle0
1 102693 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_timeout.c:57 r = 0 (0xffffffff82c17870)
#0 witness_lock+0x447
#1 mtx_enter_try+0x104
#2 mtx_enter+0x4f sys/kern/kern_lock.c:266
#3 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687
#4 softclock+0x130 sys/kern/kern_timeout.c:710
#5 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
#6 Xsoftclock+0x27
#7 pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
#7 pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
#8 uvm_anfree_list+0x9c
#9 amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
#10 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
#11 uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
#12 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
#13 reaper+0x19a sys/kern/kern_exit.c:449
#14 proc_trampoline+0x1c
Process 8285 (syz-executor.6) thread 0xffff8000212905c0 (63767)
exclusive rrwlock inode r = 0 (0xfffffd80651f13d8)
#0 witness_lock+0x447
#1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343
#6 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394
#7 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149
#8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388
#9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073
#10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806d344a28)
#0 witness_lock+0x447
#1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418
#6 namei+0x55a sys/kern/vfs_lookup.c:250
#7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058
#8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#9 Xsyscall+0x128
Process 73669 (reaper) thread 0xffff8000211acda0 (208014)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82ce9528)
#0 witness_lock+0x447
#1 softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88
#2 Xsoftclock+0x27
#3 pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
#3 pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
#4 uvm_anfree_list+0x9c
#5 amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
#6 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
#7 uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
#8 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
#9 reaper+0x19a sys/kern/kern_exit.c:449
#10 proc_trampoline+0x1c
exclusive rwlock amaplk r = 0 (0xfffffd806776a8a0)
#0 witness_lock+0x447
#1 amap_unref+0x2f sys/uvm/uvm_amap.c:1363
#2 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
#3 uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
#4 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
#5 reaper+0x19a sys/kern/kern_exit.c:449
#6 proc_trampoline+0x1c
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_timeout.c:57 r = 0 (0xffffffff82c17870)
#0 witness_lock+0x447
#1 mtx_enter_try+0x104
#2 mtx_enter+0x4f sys/kern/kern_lock.c:266
#3 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687
#4 softclock+0x130 sys/kern/kern_timeout.c:710
#5 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
#6 Xsoftclock+0x27
#7 pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
#7 pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
#8 uvm_anfree_list+0x9c
#9 amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
#10 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
#11 uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
#12 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
#13 reaper+0x19a sys/kern/kern_exit.c:449
#14 proc_trampoline+0x1c
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10225 6625K 6886K 78643K 28492 0
pcb 13 16K 18K 78643K 1098 0
rtable 249 7K 8K 78643K 1905 0
pf 32 9K 10K 78643K 402 0
ifaddr 45 17K 18K 78643K 314 0
ifgroup 55 2K 2K 78643K 628 0
sysctl 2 0K 2K 78643K 11 0
counters 60 35K 36K 78643K 374 0
ioctlops 0 0K 4K 78643K 1684 0
iov 0 0K 24K 78643K 1493 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1564 98K 98K 78643K 8283 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 188 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 1K 78643K 1454 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 14 49K 89K 78643K 14863 0
sigio 0 0K 0K 78643K 190 0
proc 70 91K 128K 78643K 2227 0
subproc 104 6K 6K 78643K 614 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 1011 0
in_multi 99 7K 7K 78643K 595 0
ether_multi 1 0K 0K 78643K 7 0
mrt 1 0K 0K 78643K 4 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 169 758K 758K 78643K 169 0
exec 0 0K 1K 78643K 2913 0
pfkey data 0 0K 0K 78643K 3 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 463 94K 114K 78643K 142151 0
UVM aobj 131 4K 4K 78643K 146 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 471 0
NDP 12 0K 2K 78643K 253 0
temp 74 5920K 6556K 78643K 121615 0
kqueue 14 19K 26K 78643K 913 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 523 0 520 6 5 1 3 0 8 0
rtentry 112 591 0 475 4 0 4 4 0 8 0
unpcb 144 33139 0 33054 163 154 9 10 0 8 5
syncache 296 119 0 119 26 25 1 1 0 8 1
tcpqe 32 328 0 328 21 21 0 1 0 8 0
tcpcb 808 3224 0 3219 124 123 1 15 0 8 0
arp 120 92 0 73 1 0 1 1 0 8 0
inpcb 368 8481 0 8474 186 179 7 14 0 8 6
nd6 136 143 0 114 3 1 2 2 0 8 0
pkpcb 40 140 0 140 10 10 0 1 0 8 0
kcovpl 48 42 0 34 1 0 1 1 0 8 0
ppxss 1256 50 0 50 15 14 1 1 0 8 1
pffrag 232 138 0 136 2 1 1 1 0 482 0
pffrnode 88 137 0 135 2 1 1 1 0 8 0
pffrent 40 502 0 500 2 1 1 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 24 419 0 400 1 0 1 1 0 8 0
pfstkey 128 419 0 400 2 1 1 2 0 8 0
pfstate 376 419 0 400 10 7 3 4 0 8 0
pfrule 1344 21 0 16 2 1 1 2 0 8 0
rttmr 136 3 0 3 1 1 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 2031 0 1560 32 2 30 32 0 8 0
art_table 32 2032 0 1560 5 1 4 5 0 8 0
art_node 16 509 0 403 1 0 1 1 0 8 0
sysvmsgpl 40 113 0 97 1 0 1 1 0 8 0
semupl 112 3 0 3 1 1 0 1 0 8 0
semapl 112 1449 0 1439 1 0 1 1 0 8 0
shmpl 112 143 0 15 5 1 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 20979 0 19453 96 0 96 96 0 8 0
ffsino 272 20979 0 19453 102 0 102 102 0 8 0
nchpl 144 43304 0 42755 63 40 23 63 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 143426 0 143425 8 7 1 2 0 8 0
percpumem 16 200 0 157 1 0 1 1 0 8 0
kstatmem 264 338 0 314 2 0 2 2 0 8 0
scxspl 216 115061 0 115061 24 23 1 8 1 8 1
plimitpl 152 1657 0 1641 1 0 1 1 0 8 0
sigapl 424 15164 0 15095 12 4 8 8 0 8 0
futexpl 64 129112 0 129108 3 2 1 1 0 8 0
knotepl 120 948 0 0 24 2 22 24 0 8 0
kqueuepl 216 2560 0 2517 46 43 3 10 0 8 0
pipepl 320 3399 0 3371 107 99 8 9 0 8 5
fdescpl 496 15098 0 15071 5 0 5 5 0 8 0
filepl 152 111015 0 110665 225 207 18 21 0 8 4
lockfpl 104 4855 0 4850 14 13 1 4 0 8 0
lockfspl 48 1638 0 1635 1 0 1 1 0 8 0
sessionpl 144 63 0 46 1 0 1 1 0 8 0
pgrppl 48 283 0 266 1 0 1 1 0 8 0
ucredpl 104 14969 0 14955 1 0 1 1 0 8 0
zombiepl 144 15756 0 15753 4 3 1 1 0 8 0
processpl 1072 15164 0 15095 5 0 5 5 0 8 0
procpl 696 38212 0 38119 24 14 10 10 0 8 0
sosppl 168 131 0 131 24 24 0 1 0 8 0
sockpl 488 42357 0 42262 1122 1100 22 38 0 8 10
mcl64k 65536 16 0 0 2 0 2 2 0 8 0
mcl16k 16384 17 0 0 3 0 3 3 0 8 0
mcl12k 12288 17 0 0 2 0 2 2 0 8 0
mcl9k 9216 7 0 0 1 0 1 1 0 8 0
mcl8k 8192 11 0 0 2 0 2 2 0 8 0
mcl4k 4096 18 0 0 3 0 3 3 0 8 0
mcl2k2 2112 4 0 0 1 0 1 1 0 8 0
mcl2k 2048 429 0 0 34 7 27 34 0 8 0
mtagpl 96 669 0 0 12 0 12 12 0 8 0
mbufpl 256 2688 0 0 128 0 128 128 0 8 0
bufpl 288 27181 0 20858 452 0 452 452 0 8 0
anonpl 24 1457191 0 1442033 189 85 104 112 0 186 0
amapchunkpl 152 448104 0 447188 126 86 40 51 0 158 2
amappl16 200 29297 0 28805 196 167 29 39 0 8 0
amappl15 192 18 0 18 1 1 0 1 0 8 0
amappl14 184 280 0 257 3 1 2 2 0 8 0
amappl13 176 13 0 12 4 3 1 1 0 8 0
amappl12 168 16319 0 16284 4 2 2 3 0 8 0
amappl11 160 79 0 65 1 0 1 1 0 8 0
amappl10 152 73 0 56 1 0 1 1 0 8 0
amappl9 144 260 0 260 19 19 0 1 0 8 0
amappl8 136 1042 0 824 9 1 8 8 0 8 0
amappl7 128 133 0 116 2 0 2 2 0 8 0
amappl6 120 622 0 595 2 1 1 2 0 8 0
amappl5 112 583 0 571 1 0 1 1 0 8 0
amappl4 104 1008 0 954 3 1 2 3 0 8 0
amappl3 96 88753 0 88668 4 1 3 3 0 8 0
amappl2 88 15845 0 15762 3 1 2 3 0 8 0
amappl1 80 64694 0 64141 23 10 13 23 0 8 0
amappl 88 140889 0 140640 7 0 7 7 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 72 145 0 15 3 0 3 3 0 8 0
uaddrrnd 24 15098 0 15071 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 15098 0 15071 1 0 1 1 0 8 0
vmmpekpl 168 107602 0 107530 4 0 4 4 0 8 0
vmmpepl 168 896231 0 893642 441 308 133 147 0 357 0
vmsppl 464 15097 0 15070 5 1 4 5 0 8 0
rwobjpl 56 215084 0 207240 127 13 114 114 0 8 0
pdppl 4096 30204 0 30140 740 670 70 82 0 8 6
pvpl 32 3977939 0 3956818 477 290 187 339 0 265 0
pmappl 248 15097 0 15070 3 0 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1934 0 1004 27 0 27 27 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:712
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
uvm_anfree_list(fffffd807648fc78,ffff8000211b9548) at uvm_anfree_list+0x9c
amap_wipeout(fffffd806996e858) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211b9610,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806efdd578) at uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806efdd578) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211acda0) at reaper+0x19a sys/kern/kern_exit.c:449
end trace frame: 0x0, count: -10
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp
x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1e 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+0x27
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020d58ff0) at sched_idle+0x41e sys/kern/kern_sched.c:199
end trace frame: 0x0, count: 10
ddb{1}> trace
x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1e 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+0x27
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020d58ff0) at sched_idle+0x41e sys/kern/kern_sched.c:199
end trace frame: 0x0, count: -5
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite bug's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the bug is a duplicate of another bug, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 229d624cca26 Update references from RFC 7539 to RFC 8439
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=11b0a40ba80000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=e831b6ab0f47caff6bf5
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/ae1c2d3f9a71/disk-229d624c.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/02ad8df0a7c2/bsd-229d624c.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b80923a90b84/kernel-229d624c.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e831b6...@syzkaller.appspotmail.com
uvm_fault(0xffffffff82caaf60, 0x8, 0, 2) -> e
kernel: page fault trap, code=2
Stopped at softclock+0xc7: movq %rcx,0x8(%rax)
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*208014 73669 0 0x14000 0x200 0K reaper
softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:712
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
uvm_anfree_list(fffffd807648fc78,ffff8000211b9548) at uvm_anfree_list+0x9c
amap_wipeout(fffffd806996e858) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211b9610,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806efdd578) at uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806efdd578) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211acda0) at reaper+0x19a sys/kern/kern_exit.c:449
end trace frame: 0x0, 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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: uvm_fault(0xffffffff82caaf60, 0x8, 0, 2) -> e
ddb{0}> trace
softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:712
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
uvm_anfree_list(fffffd807648fc78,ffff8000211b9548) at uvm_anfree_list+0x9c
amap_wipeout(fffffd806996e858) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211b9610,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806efdd578) at uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806efdd578) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211acda0) at reaper+0x19a sys/kern/kern_exit.c:449
end trace frame: 0x0, count: -10
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000211b9380
rbx 0x1
rdx 0
rcx 0xffffffff82cd53b0 timeout_todo
rax 0
r8 0xf4
r9 0xf4
r10 0x340187186feea20a
r11 0xb5d9be65419080a
r12 0xffffffff
r13 0xffffffff82c9ad00 rdrand_tmo
r14 0
r15 0xfffffd8065d6fdf0
rip 0xffffffff81f94087 softclock+0xc7
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff8000211b9340
ss 0x10
softclock+0xc7: movq %rcx,0x8(%rax)
ddb{0}> show proc
PROC (reaper) pid=208014 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=4, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff8000211ad058,0xffff8000211acaf8
process=0xffff8000fffff240 user=0xffff8000211b4000, vmspace=0xffffffff82caaf60
estcpu=0, cpticks=0, pctcpu=0.54
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
33635 214238 6186 0 3 0x80 nanoslp syz-executor.4
33635 73409 6186 0 3 0x4000080 kqread syz-executor.4
33635 494799 6186 0 3 0x4000080 kqread syz-executor.4
33635 102738 6186 0 3 0x4000080 fsleep syz-executor.4
50008 146260 96030 0 2 0 syz-executor.2
50008 217894 96030 0 3 0x4000080 fsleep syz-executor.2
17047 222734 53360 0 2 0 syz-executor.3
17047 487530 53360 0 3 0x4000080 fsleep syz-executor.3
17047 428359 53360 0 3 0x4000080 fsleep syz-executor.3
12943 115434 91180 0 2 0 syz-executor.7
12943 289141 91180 0 3 0x4000080 lockf syz-executor.7
12943 334634 91180 0 3 0x4000080 lockf syz-executor.7
29576 158453 0 0 3 0x14200 acct acct
6186 181624 1431 0 2 0x482 syz-executor.4
53360 320103 1431 0 3 0x82 nanoslp syz-executor.3
50085 315713 1431 0 3 0x82 nanoslp syz-executor.5
57991 518758 0 0 3 0x14280 nfsidl nfsio
37592 23924 0 0 3 0x14280 nfsidl nfsio
22712 141560 0 0 3 0x14280 nfsidl nfsio
83395 286468 0 0 3 0x14280 nfsidl nfsio
33320 424833 0 0 3 0x14280 nfsidl nfsio
28400 404358 0 0 3 0x14280 nfsidl nfsio
33947 445503 0 0 3 0x14280 nfsidl nfsio
49899 101942 0 0 3 0x14280 nfsidl nfsio
6150 20571 0 0 3 0x14280 nfsidl nfsio
4132 472525 0 0 3 0x14280 nfsidl nfsio
8586 36115 0 0 3 0x14280 nfsidl nfsio
2671 454881 0 0 3 0x14280 nfsidl nfsio
34292 218426 0 0 3 0x14280 nfsidl nfsio
43278 175012 0 0 3 0x14280 nfsidl nfsio
56635 227158 0 0 3 0x14280 nfsidl nfsio
1640 478868 0 0 3 0x14280 nfsidl nfsio
6605 514334 0 0 3 0x14280 nfsidl nfsio
72646 88310 0 0 3 0x14280 nfsidl nfsio
23519 224244 0 0 3 0x14280 nfsidl nfsio
67459 346570 0 0 3 0x14280 nfsidl nfsio
17780 86813 1431 0 3 0x82 nanoslp syz-executor.0
8285 63767 1431 0 2 0x2 syz-executor.6
96030 349255 1431 0 2 0x482 syz-executor.2
83735 181127 1 0 3 0x100083 ttyopn getty
91180 324480 1431 0 2 0x482 syz-executor.7
34355 300760 1431 0 2 0x482 syz-executor.1
57249 158670 0 0 3 0x14200 bored sosplice
1431 125156 94933 0 3 0x2000082 thrsleep syz-fuzzer
1431 360977 94933 0 3 0x6000082 nanoslp syz-fuzzer
1431 21614 94933 0 3 0x6000082 thrsleep syz-fuzzer
1431 224966 94933 0 3 0x6000082 wait syz-fuzzer
1431 256164 94933 0 3 0x6000082 wait syz-fuzzer
1431 146409 94933 0 3 0x6000082 thrsleep syz-fuzzer
1431 187910 94933 0 3 0x6000082 kqread syz-fuzzer
1431 251064 94933 0 3 0x6000082 wait syz-fuzzer
1431 6240 94933 0 3 0x6000082 thrsleep syz-fuzzer
1431 37312 94933 0 3 0x6000082 thrsleep syz-fuzzer
1431 173500 94933 0 3 0x6000082 thrsleep syz-fuzzer
1431 248486 94933 0 3 0x6000082 wait syz-fuzzer
1431 506723 94933 0 3 0x6000082 wait syz-fuzzer
1431 513846 94933 0 3 0x6000082 thrsleep syz-fuzzer
1431 187493 94933 0 3 0x6000082 wait syz-fuzzer
1431 44454 94933 0 3 0x6000082 wait syz-fuzzer
1431 137186 94933 0 3 0x6000082 wait syz-fuzzer
94933 466795 12583 0 3 0x10008a sigsusp ksh
12583 348760 58808 0 3 0x9a kqread sshd
58808 196508 1 0 3 0x88 kqread sshd
44474 305818 6502 74 3 0x1100092 bpf pflogd
6502 53397 1 0 3 0x80 netio pflogd
36561 243063 96147 73 3 0x1100090 kqread syslogd
96147 146040 1 0 3 0x100082 netio syslogd
71685 33360 1 0 3 0x100080 kqread resolvd
12736 308440 88083 77 3 0x100092 kqread dhcpleased
14703 186997 88083 77 3 0x100092 kqread dhcpleased
88083 335988 1 0 3 0x80 kqread dhcpleased
78550 74744 0 0 3 0x14200 bored smr
69002 218339 0 0 2 0x14200 zerothread
13296 7234 0 0 3 0x14200 aiodoned aiodoned
80224 337149 0 0 3 0x14200 syncer update
80090 287139 0 0 3 0x14200 cleaner cleaner
*73669 208014 0 0 7 0x14200 reaper
24661 305639 0 0 3 0x14200 pgdaemon pagedaemon
98393 249864 0 0 3 0x14200 bored viomb
36695 27933 0 0 3 0x40014200 acpi0 acpi0
50987 332662 0 0 7 0x40014200 idle1
39301 79919 0 0 3 0x14200 bored softnet3
17507 90126 0 0 3 0x14200 bored softnet2
45072 75455 0 0 3 0x14200 bored softnet1
15736 123192 0 0 3 0x14200 bored softnet0
13277 310734 0 0 3 0x14200 bored systqmp
85345 267416 0 0 3 0x14200 bored systq
95822 336637 0 0 3 0x40014200 bored softclock
58307 224105 0 0 3 0x40014200 idle0
1 102693 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_timeout.c:57 r = 0 (0xffffffff82c17870)
#0 witness_lock+0x447
#1 mtx_enter_try+0x104
#2 mtx_enter+0x4f sys/kern/kern_lock.c:266
#3 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687
#4 softclock+0x130 sys/kern/kern_timeout.c:710
#5 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
#6 Xsoftclock+0x27
#7 pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
#7 pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
#8 uvm_anfree_list+0x9c
#9 amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
#10 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
#11 uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
#12 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
#13 reaper+0x19a sys/kern/kern_exit.c:449
#14 proc_trampoline+0x1c
Process 8285 (syz-executor.6) thread 0xffff8000212905c0 (63767)
exclusive rrwlock inode r = 0 (0xfffffd80651f13d8)
#0 witness_lock+0x447
#1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343
#6 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394
#7 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149
#8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388
#9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073
#10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806d344a28)
#0 witness_lock+0x447
#1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418
#6 namei+0x55a sys/kern/vfs_lookup.c:250
#7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058
#8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#9 Xsyscall+0x128
Process 73669 (reaper) thread 0xffff8000211acda0 (208014)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82ce9528)
#0 witness_lock+0x447
#1 softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88
#2 Xsoftclock+0x27
#3 pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
#3 pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
#4 uvm_anfree_list+0x9c
#5 amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
#6 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
#7 uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
#8 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
#9 reaper+0x19a sys/kern/kern_exit.c:449
#10 proc_trampoline+0x1c
exclusive rwlock amaplk r = 0 (0xfffffd806776a8a0)
#0 witness_lock+0x447
#1 amap_unref+0x2f sys/uvm/uvm_amap.c:1363
#2 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
#3 uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
#4 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
#5 reaper+0x19a sys/kern/kern_exit.c:449
#6 proc_trampoline+0x1c
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_timeout.c:57 r = 0 (0xffffffff82c17870)
#0 witness_lock+0x447
#1 mtx_enter_try+0x104
#2 mtx_enter+0x4f sys/kern/kern_lock.c:266
#3 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687
#4 softclock+0x130 sys/kern/kern_timeout.c:710
#5 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
#6 Xsoftclock+0x27
#7 pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
#7 pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
#8 uvm_anfree_list+0x9c
#9 amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
#10 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
#11 uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
#12 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
#13 reaper+0x19a sys/kern/kern_exit.c:449
#14 proc_trampoline+0x1c
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10225 6625K 6886K 78643K 28492 0
pcb 13 16K 18K 78643K 1098 0
rtable 249 7K 8K 78643K 1905 0
pf 32 9K 10K 78643K 402 0
ifaddr 45 17K 18K 78643K 314 0
ifgroup 55 2K 2K 78643K 628 0
sysctl 2 0K 2K 78643K 11 0
counters 60 35K 36K 78643K 374 0
ioctlops 0 0K 4K 78643K 1684 0
iov 0 0K 24K 78643K 1493 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1564 98K 98K 78643K 8283 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 188 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 1K 78643K 1454 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 14 49K 89K 78643K 14863 0
sigio 0 0K 0K 78643K 190 0
proc 70 91K 128K 78643K 2227 0
subproc 104 6K 6K 78643K 614 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 1011 0
in_multi 99 7K 7K 78643K 595 0
ether_multi 1 0K 0K 78643K 7 0
mrt 1 0K 0K 78643K 4 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 169 758K 758K 78643K 169 0
exec 0 0K 1K 78643K 2913 0
pfkey data 0 0K 0K 78643K 3 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 463 94K 114K 78643K 142151 0
UVM aobj 131 4K 4K 78643K 146 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 471 0
NDP 12 0K 2K 78643K 253 0
temp 74 5920K 6556K 78643K 121615 0
kqueue 14 19K 26K 78643K 913 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 523 0 520 6 5 1 3 0 8 0
rtentry 112 591 0 475 4 0 4 4 0 8 0
unpcb 144 33139 0 33054 163 154 9 10 0 8 5
syncache 296 119 0 119 26 25 1 1 0 8 1
tcpqe 32 328 0 328 21 21 0 1 0 8 0
tcpcb 808 3224 0 3219 124 123 1 15 0 8 0
arp 120 92 0 73 1 0 1 1 0 8 0
inpcb 368 8481 0 8474 186 179 7 14 0 8 6
nd6 136 143 0 114 3 1 2 2 0 8 0
pkpcb 40 140 0 140 10 10 0 1 0 8 0
kcovpl 48 42 0 34 1 0 1 1 0 8 0
ppxss 1256 50 0 50 15 14 1 1 0 8 1
pffrag 232 138 0 136 2 1 1 1 0 482 0
pffrnode 88 137 0 135 2 1 1 1 0 8 0
pffrent 40 502 0 500 2 1 1 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 24 419 0 400 1 0 1 1 0 8 0
pfstkey 128 419 0 400 2 1 1 2 0 8 0
pfstate 376 419 0 400 10 7 3 4 0 8 0
pfrule 1344 21 0 16 2 1 1 2 0 8 0
rttmr 136 3 0 3 1 1 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 2031 0 1560 32 2 30 32 0 8 0
art_table 32 2032 0 1560 5 1 4 5 0 8 0
art_node 16 509 0 403 1 0 1 1 0 8 0
sysvmsgpl 40 113 0 97 1 0 1 1 0 8 0
semupl 112 3 0 3 1 1 0 1 0 8 0
semapl 112 1449 0 1439 1 0 1 1 0 8 0
shmpl 112 143 0 15 5 1 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 20979 0 19453 96 0 96 96 0 8 0
ffsino 272 20979 0 19453 102 0 102 102 0 8 0
nchpl 144 43304 0 42755 63 40 23 63 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 143426 0 143425 8 7 1 2 0 8 0
percpumem 16 200 0 157 1 0 1 1 0 8 0
kstatmem 264 338 0 314 2 0 2 2 0 8 0
scxspl 216 115061 0 115061 24 23 1 8 1 8 1
plimitpl 152 1657 0 1641 1 0 1 1 0 8 0
sigapl 424 15164 0 15095 12 4 8 8 0 8 0
futexpl 64 129112 0 129108 3 2 1 1 0 8 0
knotepl 120 948 0 0 24 2 22 24 0 8 0
kqueuepl 216 2560 0 2517 46 43 3 10 0 8 0
pipepl 320 3399 0 3371 107 99 8 9 0 8 5
fdescpl 496 15098 0 15071 5 0 5 5 0 8 0
filepl 152 111015 0 110665 225 207 18 21 0 8 4
lockfpl 104 4855 0 4850 14 13 1 4 0 8 0
lockfspl 48 1638 0 1635 1 0 1 1 0 8 0
sessionpl 144 63 0 46 1 0 1 1 0 8 0
pgrppl 48 283 0 266 1 0 1 1 0 8 0
ucredpl 104 14969 0 14955 1 0 1 1 0 8 0
zombiepl 144 15756 0 15753 4 3 1 1 0 8 0
processpl 1072 15164 0 15095 5 0 5 5 0 8 0
procpl 696 38212 0 38119 24 14 10 10 0 8 0
sosppl 168 131 0 131 24 24 0 1 0 8 0
sockpl 488 42357 0 42262 1122 1100 22 38 0 8 10
mcl64k 65536 16 0 0 2 0 2 2 0 8 0
mcl16k 16384 17 0 0 3 0 3 3 0 8 0
mcl12k 12288 17 0 0 2 0 2 2 0 8 0
mcl9k 9216 7 0 0 1 0 1 1 0 8 0
mcl8k 8192 11 0 0 2 0 2 2 0 8 0
mcl4k 4096 18 0 0 3 0 3 3 0 8 0
mcl2k2 2112 4 0 0 1 0 1 1 0 8 0
mcl2k 2048 429 0 0 34 7 27 34 0 8 0
mtagpl 96 669 0 0 12 0 12 12 0 8 0
mbufpl 256 2688 0 0 128 0 128 128 0 8 0
bufpl 288 27181 0 20858 452 0 452 452 0 8 0
anonpl 24 1457191 0 1442033 189 85 104 112 0 186 0
amapchunkpl 152 448104 0 447188 126 86 40 51 0 158 2
amappl16 200 29297 0 28805 196 167 29 39 0 8 0
amappl15 192 18 0 18 1 1 0 1 0 8 0
amappl14 184 280 0 257 3 1 2 2 0 8 0
amappl13 176 13 0 12 4 3 1 1 0 8 0
amappl12 168 16319 0 16284 4 2 2 3 0 8 0
amappl11 160 79 0 65 1 0 1 1 0 8 0
amappl10 152 73 0 56 1 0 1 1 0 8 0
amappl9 144 260 0 260 19 19 0 1 0 8 0
amappl8 136 1042 0 824 9 1 8 8 0 8 0
amappl7 128 133 0 116 2 0 2 2 0 8 0
amappl6 120 622 0 595 2 1 1 2 0 8 0
amappl5 112 583 0 571 1 0 1 1 0 8 0
amappl4 104 1008 0 954 3 1 2 3 0 8 0
amappl3 96 88753 0 88668 4 1 3 3 0 8 0
amappl2 88 15845 0 15762 3 1 2 3 0 8 0
amappl1 80 64694 0 64141 23 10 13 23 0 8 0
amappl 88 140889 0 140640 7 0 7 7 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 72 145 0 15 3 0 3 3 0 8 0
uaddrrnd 24 15098 0 15071 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 15098 0 15071 1 0 1 1 0 8 0
vmmpekpl 168 107602 0 107530 4 0 4 4 0 8 0
vmmpepl 168 896231 0 893642 441 308 133 147 0 357 0
vmsppl 464 15097 0 15070 5 1 4 5 0 8 0
rwobjpl 56 215084 0 207240 127 13 114 114 0 8 0
pdppl 4096 30204 0 30140 740 670 70 82 0 8 6
pvpl 32 3977939 0 3956818 477 290 187 339 0 265 0
pmappl 248 15097 0 15070 3 0 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1934 0 1004 27 0 27 27 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:712
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
uvm_anfree_list(fffffd807648fc78,ffff8000211b9548) at uvm_anfree_list+0x9c
amap_wipeout(fffffd806996e858) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211b9610,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806efdd578) at uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806efdd578) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211acda0) at reaper+0x19a sys/kern/kern_exit.c:449
end trace frame: 0x0, count: -10
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp
x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1e 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+0x27
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020d58ff0) at sched_idle+0x41e sys/kern/kern_sched.c:199
end trace frame: 0x0, count: 10
ddb{1}> trace
x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1e 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+0x27
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020d58ff0) at sched_idle+0x41e sys/kern/kern_sched.c:199
end trace frame: 0x0, count: -5
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite bug's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the bug is a duplicate of another bug, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot
Nov 22, 2023, 9:27:18 AM11/22/23
to syzkaller-o...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
Reply all
Reply to author
Forward
0 new messages