kernel: protection fault trap, code=0 Stopped at lf_advlock+0x225: 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(ffff800000dd18e0,0,fffffd806d5c6ba8,2,ffff80002a222b00,40) at lf_advlock+0x225 ls_ref sys/kern/vfs_lockf.c:138 [inline] lf_advlock(ffff800000dd18e0,0,fffffd806d5c6ba8,2,ffff80002a222b00,40) at lf_advlock+0x225 sys/kern/vfs_lockf.c:278 VOP_ADVLOCK(fffffd806c6150f0,fffffd806d5c6ba8,2,ffff80002a222b00,40) at VOP_ADVLOCK+0x75 sys/kern/vfs_vops.c:612 closef(fffffd806e545b58,ffff80002a187d60) at closef+0xe9 fdfree(ffff80002a187d60) at fdfree+0xe4 sys/kern/kern_descrip.c:1190 exit1(ffff80002a187d60,0,0,1) at exit1+0x3a0 sys/kern/kern_exit.c:199 sys_exit(ffff80002a187d60,ffff80002a222d50,ffff80002a222cb0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002a222d50) at syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002a222d50) at syscall+0x53b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c949edf1660, count: -8 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a222a50 rbx 0 rdx 0xa rcx 0x9 rax 0 r8 0x30 r9 0x1 r10 0x80932b5a4f1b51fc r11 0xa55bfdc2f55aa6de r12 0xdeafbeaddeafbead r13 0x2 r14 0xffff800000dd18e0 r15 0xffffffffffffffff rip 0xffffffff813008d5 lf_advlock+0x225 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a2229c0 ss 0x10 lf_advlock+0x225: incl 0x28(%r12) ddb{1}> show proc PROC (syz-executor126314685) tid=373523 pid=52072 tcnt=1 stat=onproc flags process=8000008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a1882b0,0xffff80002a187820 process=0xffff8000ffff0d68 user=0xffff80002a21d000, vmspace=0xfffffd807ab2f010 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31792 385046 82052 0 3 0x8000000 lockflk syz-executor126314685 97857 116886 64941 0 3 0x8000000 lockflk syz-executor126314685 82052 88224 896 0 3 0x8000080 nanoslp syz-executor126314685 64941 374291 896 0 3 0x8000080 nanoslp syz-executor126314685 73631 214431 896 0 3 0x8000080 nanoslp syz-executor126314685 72219 183891 896 0 3 0x8000080 nanoslp syz-executor126314685 37545 466633 896 0 3 0x8000080 nanoslp syz-executor126314685 72749 58424 896 0 3 0x8000080 nanoslp syz-executor126314685 30764 21294 896 0 3 0x8000080 nanoslp syz-executor126314685 53784 307874 896 0 3 0x8000080 nanoslp syz-executor126314685 896 199422 64019 0 3 0x8000082 nanoslp syz-executor126314685 64019 104575 89224 0 3 0x810008a sigsusp ksh 89224 83564 79960 0 3 0x1800009a kqread sshd 41914 147726 1 0 3 0x18100083 ttyin getty 79960 146431 1 0 3 0x18000088 kqread sshd 72707 46929 87453 73 3 0x19100090 kqread syslogd 87453 182163 1 0 3 0x18100082 netio syslogd 86409 204017 1 0 3 0x18100080 kqread resolvd 40093 488990 13943 77 3 0x18100092 kqread dhcpleased 51793 131945 13943 77 3 0x18100092 kqread dhcpleased 13943 384003 1 0 3 0x18000080 kqread dhcpleased 47818 165877 0 0 3 0x14200 bored smr 96377 466269 0 0 3 0x14200 pgzero zerothread 68963 242179 0 0 3 0x14200 aiodoned aiodoned 74118 520660 0 0 3 0x14200 syncer update 30836 130211 0 0 3 0x14200 cleaner cleaner 84479 57517 0 0 3 0x14200 reaper reaper 6433 206270 0 0 3 0x14200 pgdaemon pagedaemon 16762 506985 0 0 3 0x14200 bored viomb 11212 16708 0 0 3 0x40014200 acpi0 acpi0 51907 244303 0 0 3 0x40014200 idle1 11981 496207 0 0 3 0x14200 bored softnet3 94379 241037 0 0 3 0x14200 bored softnet2 32446 209658 0 0 3 0x14200 bored softnet1 83410 387093 0 0 3 0x14200 bored softnet0 27381 427184 0 0 3 0x14200 bored systqmp 28262 223740 0 0 3 0x14200 bored systq 47499 42076 0 0 3 0x14200 tmoslp softclockmp 11281 232076 0 0 3 0x40014200 tmoslp softclock 93839 187848 0 0 7 0x40014200 idle0 1 446785 0 0 3 0x8000082 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 10165 6390K 6419K 166960K 11243 0 pcb 15 10K 10K 166960K 15 0 rtable 58 1K 2K 166960K 112 0 pf 12 6K 6K 166960K 12 0 ifaddr 12 9K 9K 166960K 12 0 ifgroup 17 1K 1K 166960K 17 0 counters 48 34K 34K 166960K 48 0 ioctlops 0 0K 2K 166960K 21 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1259 79K 79K 166960K 88250 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 4 6K 17K 166960K 222460 0 proc 55 78K 79K 166960K 246 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 11 0K 0K 166960K 11 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 121 546K 546K 166960K 121 0 exec 0 0K 1K 166960K 246 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 105 5K 6K 166960K 76580 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 32 64K 74K 166960K 75010 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 3 0K 0K 166960K 3 0 temp 1 6796K 6860K 166960K 2858 0 kqueue 11 16K 18K 166960K 24 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 21 0 18 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 144 33 0 20 1 0 1 1 0 8 0 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpqe 32 92 0 92 1 1 0 1 0 8 0 tcpcb 808 8 0 5 1 0 1 1 0 8 0 arp 120 2 0 0 1 0 1 1 0 8 0 inpcb 392 26 0 20 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 97 0 0 7 0 7 7 0 8 0 art_table 32 98 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 88477 0 87015 92 0 92 92 0 8 0 ffsino 272 88477 0 87015 98 0 98 98 0 8 0 nchpl 144 88661 0 87022 61 0 61 61 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 1190792 0 1190792 2 1 1 1 0 8 1 percpumem 16 38 0 0 1 0 1 1 0 8 0 kstatmem 264 6 0 0 1 0 1 1 0 8 0 scxspl 216 5544 0 5544 9 8 1 8 1 8 1 plimitpl 152 16 0 10 1 0 1 1 0 8 0 sigapl 424 74474 0 74427 6 0 6 6 0 8 0 knotepl 120 47 0 0 2 0 2 2 0 8 0 kqueuepl 216 20 0 13 1 0 1 1 0 8 0 pipepl 320 88 0 85 2 1 1 1 0 8 0 fdescpl 496 74456 0 74432 5 1 4 4 0 8 0 filepl 152 890963 0 890899 8 4 4 4 0 8 1 lockfpl 104 296615 0 296612 1 0 1 1 0 8 0 lockfspl 48 74157 0 74154 1 0 1 1 0 8 0 sessionpl 144 17 0 9 1 0 1 1 0 8 0 pgrppl 48 17 0 9 1 0 1 1 0 8 0 ucredpl 104 889893 0 889883 1 0 1 1 0 8 0 zombiepl 144 74433 0 74427 2 1 1 1 0 8 0 processpl 1136 74474 0 74427 4 0 4 4 0 8 0 procpl 680 74474 0 74427 4 0 4 4 0 8 0 sockpl 584 80 0 58 2 0 2 2 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 299 0 0 33 9 24 33 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 324 0 0 18 1 17 18 0 8 0 bufpl 280 2481 0 84 172 0 172 172 0 8 0 anonpl 24 631968 0 630129 26 14 12 23 0 186 0 amapchunkpl 152 82641 0 82499 7 1 6 7 0 158 0 amappl16 200 79662 0 79659 6 5 1 5 0 8 0 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 162 0 153 1 0 1 1 0 8 0 amappl13 176 13 0 13 1 1 0 1 0 8 0 amappl12 168 826 0 814 1 0 1 1 0 8 0 amappl11 160 58 0 48 1 0 1 1 0 8 0 amappl10 152 17 0 17 2 2 0 1 0 8 0 amappl9 144 208 0 208 1 1 0 1 0 8 0 amappl8 136 33 0 32 2 1 1 1 0 8 0 amappl7 128 45 0 44 1 0 1 1 0 8 0 amappl6 120 174 0 163 1 0 1 1 0 8 0 amappl5 112 125 0 113 1 0 1 1 0 8 0 amappl4 104 74560 0 74524 2 0 2 2 0 8 1 amappl3 96 2166 0 2140 1 0 1 1 0 8 0 amappl2 88 74751 0 74697 2 0 2 2 0 8 0 amappl1 80 231350 0 230922 15 4 11 11 0 8 0 amappl 88 76274 0 76215 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 74457 0 74433 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 74457 0 74433 1 0 1 1 0 8 0 vmmpekpl 168 208064 0 208047 1 0 1 1 0 8 0 vmmpepl 168 1221380 0 1220314 66 16 50 50 0 357 2 vmsppl 448 74456 0 74433 9 5 4 4 0 8 1 rwobjpl 56 97719 0 91187 94 1 93 93 0 8 0 pdppl 4096 148921 0 148866 121 62 59 65 0 8 4 pvpl 32 6275 0 0 51 0 51 51 0 265 0 pmappl 248 74456 0 74433 3 1 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 398 0 82 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82d54ff0) 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+0x2f1 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffffffff82d54ff0) at sched_idle+0x41d sys/kern/kern_sched.c:183 end trace frame: 0x0, count: -5 ddb{0}> machine ddbcpu 1 Stopped at lf_advlock+0x225: incl 0x28(%r12) ddb{1}> trace lf_advlock(ffff800000dd18e0,0,fffffd806d5c6ba8,2,ffff80002a222b00,40) at lf_advlock+0x225 ls_ref sys/kern/vfs_lockf.c:138 [inline] lf_advlock(ffff800000dd18e0,0,fffffd806d5c6ba8,2,ffff80002a222b00,40) at lf_advlock+0x225 sys/kern/vfs_lockf.c:278 VOP_ADVLOCK(fffffd806c6150f0,fffffd806d5c6ba8,2,ffff80002a222b00,40) at VOP_ADVLOCK+0x75 sys/kern/vfs_vops.c:612 closef(fffffd806e545b58,ffff80002a187d60) at closef+0xe9 fdfree(ffff80002a187d60) at fdfree+0xe4 sys/kern/kern_descrip.c:1190 exit1(ffff80002a187d60,0,0,1) at exit1+0x3a0 sys/kern/kern_exit.c:199 sys_exit(ffff80002a187d60,ffff80002a222d50,ffff80002a222cb0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002a222d50) at syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002a222d50) at syscall+0x53b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c949edf1660, count: -8