kernel: protection fault trap, code=0 Stopped at lf_advlock+0x228: incl 0x28(%r12) ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace lf_advlock(ffff800000dd7960,0,fffffd8008be77c8,2,ffff80002a384f70,40) at lf_advlock+0x228 ls_ref sys/kern/vfs_lockf.c:138 [inline] lf_advlock(ffff800000dd7960,0,fffffd8008be77c8,2,ffff80002a384f70,40) at lf_advlock+0x228 sys/kern/vfs_lockf.c:278 VOP_ADVLOCK(fffffd8067600048,fffffd8008be77c8,2,ffff80002a384f70,40) at VOP_ADVLOCK+0x75 sys/kern/vfs_vops.c:612 closef(fffffd8067c4b3a8,ffff80002a1fc7d0) at closef+0xe9 fdfree(ffff80002a1fc7d0) at fdfree+0xe4 sys/kern/kern_descrip.c:1190 exit1(ffff80002a1fc7d0,0,0,1) at exit1+0x38a sys/kern/kern_exit.c:199 sys_exit(ffff80002a1fc7d0,ffff80002a3851c0,ffff80002a385110) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002a3851c0) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002a3851c0) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e0eea5386d0, count: -8 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a384ec0 rbx 0 rdx 0xa rcx 0x9 rax 0 r8 0 r9 0x1 r10 0xeefed8493f2fe2fa r11 0xd919fbb671be48ac r12 0xdeaf4152deaf4152 r13 0x2 r14 0xffff800000dd7960 r15 0xffffffffffffffff rip 0xffffffff82036388 lf_advlock+0x228 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a384e30 ss 0x10 lf_advlock+0x228: incl 0x28(%r12) ddb{1}> show proc PROC (syz-executor.6) tid=390366 pid=82862 tcnt=1 stat=onproc flags process=8001008 proc=2000 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a1fc7d0 forw=0xffffffffffffffff, list=0xffff80002a2e4028,0xffff80002a2e42c8 process=0xffff80002a296c78 user=0xffff80002a380000, vmspace=0xfffffd8067750540 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26260 60885 27324 0 3 0x8000082 nanoslp syz-executor.7 16436 440126 27324 0 3 0x8000082 nanoslp syz-executor.3 36886 14454 27324 0 3 0x8000082 nanoslp syz-executor.2 48777 436215 27324 0 3 0x8000002 biowait syz-executor.5 13081 110897 27324 0 3 0x8000082 nanoslp syz-executor.4 58180 40732 27324 0 7 0x8000002 syz-executor.1 12932 265988 27324 0 3 0x8000082 nanoslp syz-executor.6 52183 88759 27324 0 2 0x8000482 syz-executor.0 27324 330302 74480 0 3 0x1a000082 wait syz-execprog 27324 195484 74480 0 3 0x1e000082 nanoslp syz-execprog 27324 204213 74480 0 3 0x1e000082 thrsleep syz-execprog 27324 90460 74480 0 3 0x1e000082 thrsleep syz-execprog 27324 515398 74480 0 3 0x1e000082 thrsleep syz-execprog 27324 202178 74480 0 3 0x1e000082 wait syz-execprog 27324 285055 74480 0 3 0x1e000082 wait syz-execprog 27324 57261 74480 0 3 0x1e000082 wait syz-execprog 27324 280045 74480 0 3 0x1e000082 wait syz-execprog 27324 293142 74480 0 3 0x1e000082 wait syz-execprog 27324 151216 74480 0 3 0x1e000082 thrsleep syz-execprog 27324 213960 74480 0 3 0x1e000082 wait syz-execprog 27324 366851 74480 0 3 0x1e000082 wait syz-execprog 27324 400006 74480 0 3 0x1e000082 thrsleep syz-execprog 27324 269634 74480 0 3 0x1e000082 thrsleep syz-execprog 27324 419717 74480 0 3 0x1e000082 kqread syz-execprog 74480 18435 83228 0 3 0x810008a sigsusp ksh 83228 406922 90688 0 3 0x1800009a kqread sshd 97561 50012 1 0 3 0x18100083 ttyin getty 90688 283361 1 0 3 0x18000088 kqread sshd 10540 520940 97256 73 3 0x19100090 kqread syslogd 97256 472878 1 0 3 0x18100082 sbwait syslogd 18174 472501 1 0 3 0x18100080 kqread resolvd 38665 85135 19259 77 3 0x18100092 kqread dhcpleased 79133 107953 19259 77 3 0x18100092 kqread dhcpleased 19259 459393 1 0 3 0x18000080 kqread dhcpleased 64562 396651 0 0 3 0x14200 bored smr 31902 306370 0 0 2 0x14200 zerothread 99104 253998 0 0 3 0x14200 aiodoned aiodoned 16640 42772 0 0 3 0x14200 syncer update 20205 282670 0 0 3 0x14200 cleaner cleaner 28324 502266 0 0 3 0x14200 reaper reaper 56506 302340 0 0 3 0x14200 pgdaemon pagedaemon 90743 442368 0 0 3 0x14200 bored viomb 41629 255791 0 0 3 0x40014200 acpi0 acpi0 51448 298965 0 0 3 0x40014200 idle1 56170 129564 0 0 3 0x14200 bored softnet3 88640 415550 0 0 3 0x14200 bored softnet2 53710 407433 0 0 3 0x14200 bored softnet1 46185 137502 0 0 3 0x14200 bored softnet0 53076 206285 0 0 3 0x14200 bored systqmp 89504 128835 0 0 3 0x14200 bored systq 99350 220600 0 0 3 0x14200 tmoslp softclockmp 19457 491810 0 0 3 0x40014200 tmoslp softclock 9130 96516 0 0 3 0x40014200 idle0 1 416372 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 48777 (syz-executor.5) thread 0xffff80002a1fc020 (436215) exclusive rrwlock inode r = 0 (0xfffffd8068aa21b8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 vget+0x1fd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x1373 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6f8 sys/kern/vfs_lookup.c:566 #11 namei+0x56a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1855 #13 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #13 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8066e644e0) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd3 sys/kern/vfs_lookup.c:418 #6 namei+0x56a sys/kern/vfs_lookup.c:250 #7 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1855 #8 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #8 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10194 6414K 6420K 166960K 79858 0 pcb 17 12K 12K 166960K 17 0 rtable 234 6K 6K 166960K 347 0 pf 29 8K 10K 166960K 40 0 ifaddr 44 15K 15K 166960K 46 0 ifgroup 50 2K 2K 166960K 50 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 4K 166960K 1481 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1268 80K 80K 166960K 69878 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 13 45K 93K 166960K 68727 0 proc 55 78K 103K 166960K 480 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 127 572K 572K 166960K 127 0 exec 0 0K 1K 166960K 370 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 274 77K 79K 166960K 565458 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 33 66K 100K 166960K 69868 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 11 0K 2K 166960K 27 0 temp 1 6804K 6868K 166960K 209787 0 kqueue 12 18K 18K 166960K 25 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 68628 0 68623 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 144 137223 0 137210 19 18 1 2 0 8 0 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpqe 32 18 0 18 1 1 0 1 0 8 0 tcpcb 808 8 0 5 1 0 1 1 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 384 62 0 56 1 0 1 1 0 8 0 nd6 136 24 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 27 0 26 2 1 1 1 0 8 0 pfstkey 128 27 0 26 2 1 1 1 0 8 0 pfstate 376 27 0 26 3 2 1 2 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 0 29 0 29 29 0 8 0 art_table 32 454 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 70166 0 68645 96 0 96 96 0 8 0 ffsino 272 70166 0 68645 102 0 102 102 0 8 0 nchpl 144 139020 0 137249 67 1 66 66 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 1309571 0 1309571 3 2 1 2 0 8 1 percpumem 16 46 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 419037 0 419036 11 10 1 8 1 8 0 plimitpl 152 68629 0 68607 1 0 1 1 0 8 0 sigapl 424 69032 0 68986 7 1 6 7 0 8 0 futexpl 64 1049617 0 1049617 1 0 1 1 0 8 1 knotepl 120 118 0 0 4 0 4 4 0 8 0 kqueuepl 216 68616 0 68608 1 0 1 1 0 8 0 pipepl 320 142 0 114 4 1 3 3 0 8 0 fdescpl 496 69014 0 68990 6 2 4 5 0 8 0 filepl 152 1099175 0 1099028 20 13 7 8 0 8 0 lockfpl 104 274290 0 274282 1 0 1 1 0 8 0 lockfspl 48 68586 0 68581 1 0 1 1 0 8 0 sessionpl 144 25 0 9 1 0 1 1 0 8 0 pgrppl 48 25 0 9 1 0 1 1 0 8 0 ucredpl 104 617421 0 617411 1 0 1 1 0 8 0 zombiepl 144 68993 0 68986 2 1 1 1 0 8 0 processpl 1136 69032 0 68986 4 0 4 4 0 8 0 procpl 656 138184 0 138123 16 9 7 7 0 8 1 srpgc 96 1 0 1 1 1 0 1 0 8 0 sockpl 664 205913 0 205889 7 4 3 4 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 341 0 0 42 1 41 42 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 444 0 0 23 0 23 23 0 8 0 bufpl 280 72989 0 66734 447 0 447 447 0 8 0 anonpl 24 4004132 0 3997576 82 40 42 64 0 186 0 amapchunkpl 152 1777359 0 1776752 47 18 29 30 0 158 1 amappl16 200 73948 0 73817 13 5 8 8 0 8 0 amappl15 192 12 0 12 1 1 0 1 0 8 0 amappl14 184 163 0 151 2 1 1 2 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 69693 0 69666 2 0 2 2 0 8 0 amappl11 160 104 0 93 1 0 1 1 0 8 0 amappl10 152 65 0 55 2 1 1 1 0 8 0 amappl9 144 178 0 177 1 0 1 1 0 8 0 amappl8 136 196 0 128 3 0 3 3 0 8 0 amappl7 128 55 0 44 1 0 1 1 0 8 0 amappl6 120 332 0 317 2 1 1 2 0 8 0 amappl5 112 171 0 159 1 0 1 1 0 8 0 amappl4 104 569 0 536 2 0 2 2 0 8 0 amappl3 96 358128 0 358063 3 0 3 3 0 8 0 amappl2 88 69414 0 69349 4 2 2 4 0 8 0 amappl1 80 216408 0 215926 27 16 11 22 0 8 0 amappl 88 564883 0 564718 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 69014 0 68990 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 69014 0 68990 1 0 1 1 0 8 0 vmmpekpl 168 340537 0 340505 2 0 2 2 0 8 0 vmmpepl 168 2916371 0 2914739 138 57 81 117 0 357 2 vmsppl 440 69013 0 68990 4 0 4 4 0 8 0 rwobjpl 56 669231 0 662255 100 1 99 99 0 8 0 pdppl 4096 138035 0 137980 215 150 65 79 0 8 10 pvpl 32 51128 0 0 407 1 406 406 0 265 0 pmappl 248 69013 0 68990 4 2 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 522 0 157 11 0 11 11 0 8 0 ddb{1}>