kernel: protection fault trap, code=0 Stopped at lf_clearlock+0x282: movq %r12,0(%rbx) 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_clearlock(fffffd806f01cd68) at lf_clearlock+0x282 sys/kern/vfs_lockf.c:547 lf_advlock(ffff800000bd2ca0,0,fffffd807041bda0,2,ffff8000211ceb00,40) at lf_advlock+0x3bb sys/kern/vfs_lockf.c:304 VOP_ADVLOCK(fffffd806e1c5328,fffffd807041bda0,2,ffff8000211ceb00,40) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628 closef(fffffd806e601c88,ffff800021142d28) at closef+0xe5 fdfree(ffff800021142d28) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff800021142d28,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff800021142d28,ffff8000211cec70,ffff8000211cecd0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000211ced40) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211ced40) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8070, count: -9 ddb{0}> show registers rdi 0x1 rsi 0xffffffff829554f0 __sancov_gen_cov_switch_values.14 rbp 0xffff8000211ce9b0 rbx 0xdeadbeefdeadbf1f rdx 0x1 rcx 0xfffffd806f01cd68 rax 0 r8 0xffff8000211ceb00 r9 0x40 r10 0xaf42b3034de4b975 r11 0xca1cda8668edf6ef r12 0xdeadbeefdeadbeef r13 0x1 r14 0xfffffd806f01cd68 r15 0xfffffd806f01cd68 rip 0xffffffff819fbc32 lf_clearlock+0x282 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000211ce960 ss 0x10 lf_clearlock+0x282: movq %r12,0(%rbx) ddb{0}> show proc PROC (syz-executor3906617542) pid=516185 stat=onproc flags process=a proc=2000 pri=56, usrpri=56, nice=20 forw=0xffffffffffffffff, list=0xffff800021142008,0xffffffff82a0a880 process=0xffff8000211a29a0 user=0xffff8000211c9000, vmspace=0xfffffd806ef3ee68 estcpu=6, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 30547 126981 2461 0 3 0x10008a sigsusp ksh 2461 513730 32481 0 7 0x12 sshd 5676 520254 1 0 3 0x100083 ttyin getty 32481 327116 1 0 3 0x88 kqread sshd 17276 423003 51175 74 3 0x1100092 bpf pflogd 51175 292644 1 0 3 0x80 netio pflogd 40629 243064 25676 73 3 0x1100090 kqread syslogd 25676 220969 1 0 3 0x100082 netio syslogd 18799 364498 1 0 3 0x100080 kqread resolvd 65692 382095 25069 77 3 0x100092 kqread dhcpleased 41803 427608 25069 77 3 0x100092 kqread dhcpleased 25069 199238 1 0 3 0x80 kqread dhcpleased 53280 352960 0 0 3 0x14200 bored smr 3431 187907 0 0 2 0x14200 zerothread 47227 121494 0 0 3 0x14200 aiodoned aiodoned 44740 162949 0 0 3 0x14200 syncer update 15755 170898 0 0 3 0x14200 cleaner cleaner 75748 15521 0 0 3 0x14200 reaper reaper 13779 267841 0 0 3 0x14200 pgdaemon pagedaemon 53836 64381 0 0 3 0x14200 bored viomb 37424 124061 0 0 3 0x40014200 acpi0 acpi0 29671 126275 0 0 3 0x40014200 idle1 67863 292279 0 0 3 0x14200 bored softnet 70357 358064 0 0 3 0x14200 bored systqmp 31594 504294 0 0 3 0x14200 bored systq 38375 145131 0 0 3 0x40014200 bored softclock 39958 228620 0 0 3 0x40014200 idle0 1 360850 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10150 6455K 6455K 78643K 11240 0 pcb 13 8K 8K 78643K 13 0 rtable 62 2K 2K 78643K 112 0 ifaddr 29 8K 8K 78643K 32 0 counters 40 33K 33K 78643K 40 0 ioctlops 0 0K 4K 78643K 1479 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1167 73K 73K 78643K 1180 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 2 2K 3K 78643K 4 0 proc 67 87K 87K 78643K 282 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 31 148K 148K 78643K 31 0 exec 0 0K 2K 78643K 432 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 7 26K 26K 78643K 7 0 UVM amap 58 3K 5K 78643K 1531 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 4 0K 0K 78643K 4 0 temp 23 4705K 4769K 78643K 2507 0 kqueue 11 16K 18K 78643K 24 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 17 0 14 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 136 35 0 20 1 0 1 1 0 8 0 syncache 296 5 0 5 2 1 1 1 0 8 1 tcpcb 736 8 0 5 1 0 1 1 0 8 0 arp 120 2 0 0 1 0 1 1 0 8 0 inpcb 312 32 0 26 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 8 0 0 1 0 1 1 0 8 0 pfstkey 112 8 0 0 1 0 1 1 0 8 0 pfstate 320 8 0 0 1 0 1 1 0 8 0 pfrule 1360 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 95 0 0 6 0 6 6 0 8 0 art_table 32 96 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1425 0 39 87 0 87 87 0 8 0 ffsino 272 1425 0 39 93 0 93 93 0 8 0 nchpl 144 1614 0 49 58 0 58 58 0 8 0 uvmvnodes 80 1435 0 0 30 0 30 30 0 8 0 vnodes 224 1435 0 0 85 0 85 85 0 8 0 namei 1024 4476 0 4476 1 0 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 216 3868 0 3868 2 1 1 2 0 8 1 plimitpl 152 16 0 9 1 0 1 1 0 8 0 sigapl 424 320 0 291 4 0 4 4 0 8 0 knotepl 120 49 0 0 2 0 2 2 0 8 0 kqueuepl 216 20 0 13 1 0 1 1 0 8 0 pipepl 336 86 0 83 1 0 1 1 0 8 0 fdescpl 496 306 0 291 3 0 3 3 0 8 0 filepl 152 1185 0 1125 3 0 3 3 0 8 0 lockfpl 104 11 0 7 1 0 1 1 0 8 0 lockfspl 48 5 0 2 1 0 1 1 0 8 0 sessionpl 144 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 72 0 60 1 0 1 1 0 8 0 zombiepl 144 292 0 291 1 0 1 1 0 8 0 processpl 1064 320 0 291 3 0 3 3 0 8 0 procpl 672 320 0 291 3 0 3 3 0 8 0 sockpl 480 84 0 60 4 0 4 4 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 62 0 0 8 0 8 8 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 109 0 0 7 0 7 7 0 8 0 bufpl 288 2011 0 92 138 0 138 138 0 8 0 anonpl 24 38423 0 36428 16 2 14 15 0 186 1 amapchunkpl 152 2820 0 2723 6 1 5 6 0 158 0 amappl16 200 97 0 92 1 0 1 1 0 8 0 amappl14 184 1 0 1 1 1 0 1 0 8 0 amappl13 176 34 0 33 2 1 1 1 0 8 0 amappl12 168 5 0 4 1 0 1 1 0 8 0 amappl11 160 66 0 49 1 0 1 1 0 8 0 amappl10 152 3 0 1 1 0 1 1 0 8 0 amappl9 144 487 0 485 1 0 1 1 0 8 0 amappl8 136 364 0 363 2 1 1 1 0 8 0 amappl7 128 53 0 49 1 0 1 1 0 8 0 amappl6 120 104 0 94 1 0 1 1 0 8 0 amappl5 112 91 0 78 1 0 1 1 0 8 0 amappl4 104 628 0 608 1 0 1 1 0 8 0 amappl3 96 412 0 389 1 0 1 1 0 8 0 amappl2 88 454 0 416 2 1 1 2 0 8 0 amappl1 80 9473 0 9066 10 0 10 10 0 8 0 amappl 88 1250 0 1210 2 0 2 2 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 24 306 0 291 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 306 0 291 1 0 1 1 0 8 0 vmmpekpl 168 6235 0 6219 1 0 1 1 0 8 0 vmmpepl 168 27022 0 26164 47 5 42 47 0 357 0 vmsppl 368 305 0 291 2 0 2 2 0 8 0 rwobjpl 56 9716 0 7710 31 1 30 30 0 8 1 pdppl 4096 619 0 582 48 11 37 45 0 8 0 pvpl 32 130742 0 126782 40 4 36 40 0 265 1 pmappl 248 305 0 291 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 404 0 14 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace lf_clearlock(fffffd806f01cd68) at lf_clearlock+0x282 sys/kern/vfs_lockf.c:547 lf_advlock(ffff800000bd2ca0,0,fffffd807041bda0,2,ffff8000211ceb00,40) at lf_advlock+0x3bb sys/kern/vfs_lockf.c:304 VOP_ADVLOCK(fffffd806e1c5328,fffffd807041bda0,2,ffff8000211ceb00,40) at VOP_ADVLOCK+0x71 sys/kern/vfs_vops.c:628 closef(fffffd806e601c88,ffff800021142d28) at closef+0xe5 fdfree(ffff800021142d28) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff800021142d28,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff800021142d28,ffff8000211cec70,ffff8000211cecd0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000211ced40) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211ced40) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8070, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) 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 __mp_lock(ffffffff829cae18) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829cae18) at __mp_lock+0x122 sys/kern/kern_lock.c:147 userret(ffff800021143a48) at userret+0x18e sys/kern/kern_sig.c:1977 syscall(ffff8000211c2300) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff8000211c2300) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0620, count: -7 ddb{1}>