login: kernel: protection fault trap, code=0 Stopped at lf_advlock+0x2f7: incl 0x28(%r12) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace lf_advlock(ffff80000149a520,0,fffffd806bc5e9f8,2,ffff80003a4dbd40,40) at lf_advlock+0x2f7 ls_ref sys/kern/vfs_lockf.c:138 [inline] lf_advlock(ffff80000149a520,0,fffffd806bc5e9f8,2,ffff80003a4dbd40,40) at lf_advlock+0x2f7 sys/kern/vfs_lockf.c:278 VOP_ADVLOCK(fffffd806be806f0,fffffd806bc5e9f8,2,ffff80003a4dbd40,40) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:620 closef(fffffd8068ac7d28,ffff8000318afc50) at closef+0x140 sys/kern/kern_descrip.c:-1 fdfree(ffff8000318afc50) at fdfree+0x116 sys/kern/kern_descrip.c:1181 exit1(ffff8000318afc50,b,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff8000318afc50,ffff80003a4dbf80,ffff80003a4dbed0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003a4dbf80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a4dbf80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79916160f4a0, count: -8 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003a4dbc90 rbx 0 rdx 0 rcx 0xffff8000318afc50 rax 0xffffffff8385eff0 cpu_info_full_primary+0x1ff0 r8 0xa0 r9 0 r10 0x3caefc949b7bdb20 r11 0x9ecbb653632f2629 r12 0xdead4110dead4110 r13 0x2 r14 0xffff80000149a520 r15 0xffffffffffffffff rip 0xffffffff81ddb4f7 lf_advlock+0x2f7 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a4dbc00 ss 0x10 lf_advlock+0x2f7: incl 0x28(%r12) ddb{0}> show proc PROC (syz-executor) tid=295057 pid=97832 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=77, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000318afc50 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000318ae540,0xffff8000318aed00 process=0xffff8000ffff4020 user=0xffff80003a4d7000, vmspace=0xfffffd8066d01580 estcpu=27, cpticks=0, pctcpu=0.7, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 91725 498605 13464 0 2 0x2 syz-executor 15509 443039 56397 0 2 0x10 syz-executor 15509 8737 56397 0 3 0x4000010 futex syz-executor 15509 128538 56397 0 2 0x4000010 syz-executor 15509 515207 56397 0 3 0x4000090 fsleep syz-executor 40560 13225 40979 -1 2 0x10 syz-executor 40560 63000 40979 -1 3 0x4000090 fsleep syz-executor 9705 195988 0 0 3 0x14200 acct acct 68228 817 12639 0 2 0 syz-executor 68228 355946 12639 0 2 0x4000000 syz-executor 68228 196766 12639 0 3 0x4000080 fsleep syz-executor 68228 390843 12639 0 2 0x4000000 syz-executor 49105 520786 0 0 3 0x14200 bored sosplice 12639 119804 13464 0 2 0x482 syz-executor 21758 40297 13464 0 2 0x2 syz-executor 40979 128818 13464 0 2 0x482 syz-executor 56397 148782 13464 0 2 0x482 syz-executor 61084 494757 13464 0 2 0x482 syz-executor 72041 168191 13464 0 2 0x482 syz-executor 72836 232046 13464 0 2 0x482 syz-executor 13464 450129 30048 0 3 0x82 kqread syz-executor 30048 322973 68852 0 3 0x10008a sigsusp ksh 68852 77782 19219 0 3 0x98 kqread sshd-session 19219 283966 45573 0 3 0x92 kqread sshd-session 69681 168892 1 0 3 0x100083 ttyin getty 45573 23916 1 0 3 0x88 kqread sshd 5999 133818 88526 74 3 0x1100092 bpf pflogd 88526 457469 1 0 3 0x80 sbwait pflogd 13769 17827 67908 73 3 0x1100090 kqread syslogd 67908 519830 1 0 3 0x100082 sbwait syslogd 36996 506605 1 0 3 0x100080 kqread resolvd 54900 96466 50653 77 3 0x100092 kqread dhcpleased 84605 423974 50653 77 3 0x100092 kqread dhcpleased 50653 170700 1 0 3 0x80 kqread dhcpleased 47722 150391 0 0 3 0x14200 bored smr 68962 99239 0 0 2 0x14200 zerothread 63989 99507 0 0 3 0x14200 aiodoned aiodoned 74038 250641 0 0 3 0x14200 syncer update 41376 193841 0 0 3 0x14200 cleaner cleaner 67711 162194 0 0 3 0x14200 reaper reaper 41061 419895 0 0 3 0x14200 pgdaemon pagedaemon 88701 12659 0 0 3 0x14200 bored viomb 21676 310445 0 0 3 0x40014200 acpi0 acpi0 17616 341824 0 0 7 0x40014200 idle1 37040 327491 0 0 3 0x14200 bored softnet3 21713 79479 0 0 3 0x14200 bored softnet2 58761 247128 0 0 3 0x14200 bored softnet1 22633 373208 0 0 3 0x14200 bored softnet0 57655 413027 0 0 3 0x14200 bored systqmp 83594 297988 0 0 3 0x14200 bored systq 6023 221316 0 0 3 0x14200 tmoslp softclockmp 50075 491668 0 0 2 0x40014200 softclock 58417 56812 0 0 3 0x40014200 idle0 1 242876 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 91725 (syz-executor) thread 0xffff8000318b0028 (498605) exclusive rrwlock inode r = 0 (0xfffffd806df90748) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 vn_open+0x13f sys/kern/vfs_vnops.c:140 #12 doopenat+0x32e sys/kern/vfs_syscalls.c:1139 #13 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 Process 15509 (syz-executor) thread 0xffff8000318b0f88 (128538) exclusive rwlock futex r = 0 (0xffffffff837c2f58) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sys_futex+0x69 sys/kern/sys_futex.c:98 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 21758 (syz-executor) thread 0xffff80002a2f99a8 (40297) exclusive rrwlock inode r = 0 (0xfffffd806de14ef0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3117 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806f8c5df8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3102 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10191 11019K 11214K 166960K 11321 0 pcb 18 15K 16K 166960K 157 0 rtable 219 6K 7K 166960K 370 0 pf 32 17K 21K 166960K 49 0 ifaddr 39 6K 7K 166960K 46 0 ifgroup 51 2K 2K 166960K 57 0 sysctl 1 1K 1K 166960K 1 0 counters 62 36K 36K 166960K 66 0 ioctlops 0 0K 4K 166960K 1494 0 iov 0 0K 12K 166960K 9 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1332 84K 84K 166960K 1406 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 85K 166960K 237 0 proc 75 103K 115K 166960K 542 0 subproc 63 3K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 13 0 in_multi 88 6K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 380 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 248 177K 178K 166960K 3951 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 41 82K 103K 166960K 1340 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 11 0K 2K 166960K 29 0 temp 63 8686K 8934K 166960K 7750 0 kqueue 14 22K 29K 166960K 39 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 41 0 37 1 0 1 1 0 8 0 rtentry 168 114 0 13 5 0 5 5 0 8 0 unpcb 144 154 0 134 4 0 4 4 0 8 3 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpqe 32 2 0 2 2 1 1 1 0 8 1 tcpcb 808 28 0 19 2 0 2 2 0 8 0 arp 120 18 0 2 1 0 1 1 0 8 0 inpcb 376 272 0 259 11 6 5 8 0 8 2 nd6 136 26 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 1 1 0 1 1 0 8 0 ppxss 1168 1 0 1 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 1 0 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 21 0 0 1 0 1 1 0 8 0 pfstkey 128 21 0 0 1 0 1 1 0 8 0 pfstate 376 21 0 0 3 0 3 3 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 487 0 75 29 1 28 29 0 8 0 art_table 32 488 0 75 4 0 4 4 0 8 0 art_node 16 113 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 3 0 1 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1733 0 220 95 0 95 95 0 8 0 ffsino 280 1733 0 220 109 0 109 109 0 8 0 nchpl 144 2069 0 376 63 0 63 63 0 8 0 uvmvnodes 80 1840 0 0 38 0 38 38 0 8 0 vnodes 216 1840 0 0 103 0 103 103 0 8 0 namei 1024 7082 0 7080 2 1 1 2 0 8 0 percpumem 16 47 0 2 1 0 1 1 0 8 0 kstatmem 264 26 0 4 2 0 2 2 0 8 0 scxspl 216 6706 0 6706 2 1 1 2 1 8 1 plimitpl 152 48 0 30 1 0 1 1 0 8 0 sigapl 424 542 0 492 7 1 6 7 0 8 0 futexpl 64 1670 0 1666 1 0 1 1 0 8 0 knotepl 120 139 0 0 5 0 5 5 0 8 0 kqueuepl 216 48 0 36 1 0 1 1 0 8 0 pipepl 328 111 0 84 3 0 3 3 0 8 0 fdescpl 504 521 0 491 5 0 5 5 0 8 1 filepl 152 2684 0 2464 15 3 12 12 0 8 0 lockfpl 104 95 0 92 1 0 1 1 0 8 0 lockfspl 48 18 0 15 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 35 0 18 1 0 1 1 0 8 0 ucredpl 104 198 0 183 1 0 1 1 0 8 0 zombiepl 144 555 0 552 2 1 1 1 0 8 0 processpl 1176 542 0 492 5 0 5 5 0 8 0 procpl 656 738 0 681 6 0 6 6 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 688 469 0 432 14 5 9 9 0 8 4 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 176 0 0 11 0 11 11 0 8 0 bufpl 280 2584 0 123 176 0 176 176 0 8 0 anonpl 24 114217 0 108502 37 2 35 35 0 184 0 amapchunkpl 152 11770 0 11115 29 2 27 27 0 158 0 amappl16 200 2125 0 2106 6 3 3 5 0 8 0 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 116 0 104 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1172 0 1142 3 1 2 3 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 1 0 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 29 0 26 1 0 1 1 0 8 0 amappl7 128 109 0 97 1 0 1 1 0 8 0 amappl6 120 185 0 182 1 0 1 1 0 8 0 amappl5 112 120 0 111 1 0 1 1 0 8 0 amappl4 104 343 0 323 1 0 1 1 0 8 0 amappl3 96 1959 0 1844 5 1 4 4 0 8 1 amappl2 88 652 0 592 2 0 2 2 0 8 0 amappl1 80 9223 0 8625 15 0 15 15 0 8 0 amappl 88 3235 0 3062 5 0 5 5 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 521 0 491 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 521 0 491 1 0 1 1 0 8 0 vmmpekpl 168 6321 0 6281 2 0 2 2 0 8 0 vmmpepl 168 40541 0 38623 97 2 95 95 0 357 4 vmsppl 456 520 0 491 6 1 5 5 0 8 1 rwobjpl 64 16148 0 13378 46 0 46 46 0 8 0 pdppl 4096 1050 0 982 106 32 74 82 0 8 6 pvpl 32 13270 0 0 108 0 108 108 0 265 0 pmappl 248 520 0 491 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 282 0 37 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace lf_advlock(ffff80000149a520,0,fffffd806bc5e9f8,2,ffff80003a4dbd40,40) at lf_advlock+0x2f7 ls_ref sys/kern/vfs_lockf.c:138 [inline] lf_advlock(ffff80000149a520,0,fffffd806bc5e9f8,2,ffff80003a4dbd40,40) at lf_advlock+0x2f7 sys/kern/vfs_lockf.c:278 VOP_ADVLOCK(fffffd806be806f0,fffffd806bc5e9f8,2,ffff80003a4dbd40,40) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:620 closef(fffffd8068ac7d28,ffff8000318afc50) at closef+0x140 sys/kern/kern_descrip.c:-1 fdfree(ffff8000318afc50) at fdfree+0x116 sys/kern/kern_descrip.c:1181 exit1(ffff8000318afc50,b,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff8000318afc50,ffff80003a4dbf80,ffff80003a4dbed0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003a4dbf80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a4dbf80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79916160f4a0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029a9bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff800029a9bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5