kernel: protection fault trap, code=0 Stopped at lf_advlock+0x2fa: 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(ffff8000015bcde0,0,ffff8000fffea220,8,ffff80003c4cd5f0,40) at lf_advlock+0x2fa ls_ref sys/kern/vfs_lockf.c:138 [inline] lf_advlock(ffff8000015bcde0,0,ffff8000fffea220,8,ffff80003c4cd5f0,40) at lf_advlock+0x2fa sys/kern/vfs_lockf.c:278 VOP_ADVLOCK(fffffd806ea297f8,ffff8000fffea220,8,ffff80003c4cd5f0,40) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:623 sys_fcntl(ffff80002a344fd0,ffff80003c4cd750,ffff80003c4cd6a0) at sys_fcntl+0x13e6 sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:-1 syscall(ffff80003c4cd750) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4cd750) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9751eeb8900, count: -5 ddb{0}> show registers rdi 0xffff80002e79d000 rsi 0x1408 __ALIGN_SIZE+0x408 rbp 0xffff80003c4cd510 rbx 0x30656c00000003 rdx 0xffff80002e79d000 rcx 0x1407 __ALIGN_SIZE+0x407 rax 0xffffffff81b76dfe witness_assert+0x4ee r8 0xa0 r9 0 r10 0xb5faeca407d22392 r11 0x6087e6f7e9b18469 r12 0xdeadbeefdeadbeef r13 0x8 r14 0xffff80003c4cd5f0 r15 0x1 rip 0xffffffff8136462a lf_advlock+0x2fa cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c4cd480 ss 0x10 lf_advlock+0x2fa: incl 0x28(%r12) ddb{0}> show proc PROC (syz-executor) tid=399780 pid=75261 tcnt=7 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=81, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a345798,0xffff80002a344050 process=0xffff80003c4944f8 user=0xffff80003c4c8000, vmspace=0xfffffd80718959a0 estcpu=31, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 68262 415106 93669 0 3 0x2002 inode ifconfig 62940 135850 3433 0 3 0x80 nanoslp syz-executor 62940 465030 3433 0 3 0x4000000 lockflk syz-executor 62940 305184 3433 0 3 0x4000080 fsleep syz-executor 51235 114426 52795 -1 2 0x10 syz-executor 51235 233159 52795 -1 3 0x4000010 inode syz-executor 51235 35703 52795 -1 3 0x4000010 inode syz-executor 51235 407528 52795 -1 3 0x4000090 fsleep syz-executor 75261 490011 24678 0 2 0 syz-executor *75261 399780 24678 0 7 0x4000000 syz-executor 75261 23810 24678 0 2 0x4000000 syz-executor 75261 190438 24678 0 3 0x4000000 inode syz-executor 75261 205707 24678 0 3 0x4000000 inode syz-executor 75261 407544 24678 0 3 0x4000000 inode syz-executor 75261 264267 24678 0 3 0x4000080 fsleep syz-executor 93669 500782 77697 0 3 0x10008a sigsusp sh 77697 370614 62463 0 3 0x82 wait syz-executor 3077 101547 62463 0 3 0x2 lockflk syz-executor 52795 279214 62463 0 3 0x82 nanoslp syz-executor 72372 453756 0 0 3 0x14280 nfsidl nfsio 79488 397511 0 0 3 0x14280 nfsidl nfsio 73846 326400 0 0 3 0x14280 nfsidl nfsio 90752 377932 0 0 3 0x14280 nfsidl nfsio 18479 507742 0 0 3 0x14280 nfsidl nfsio 98975 245828 0 0 3 0x14280 nfsidl nfsio 32335 150808 0 0 3 0x14280 nfsidl nfsio 24150 201819 0 0 3 0x14280 nfsidl nfsio 8866 487971 0 0 3 0x14280 nfsidl nfsio 59641 257296 0 0 3 0x14280 nfsidl nfsio 30681 41550 0 0 3 0x14280 nfsidl nfsio 72083 465543 0 0 3 0x14280 nfsidl nfsio 69775 225798 0 0 3 0x14280 nfsidl nfsio 33948 23016 0 0 3 0x14280 nfsidl nfsio 25858 244868 0 0 3 0x14280 nfsidl nfsio 12963 381651 0 0 3 0x14280 nfsidl nfsio 31238 436373 0 0 3 0x14280 nfsidl nfsio 22101 11176 0 0 3 0x14280 nfsidl nfsio 73268 461684 0 0 3 0x14280 nfsidl nfsio 26232 339021 0 0 3 0x14280 nfsidl nfsio 36587 16016 0 0 3 0x14200 acct acct 97038 398070 94536 0 3 0x100082 sbwait ndp 94536 302766 36019 0 3 0x10008a sigsusp sh 63951 267990 62463 0 2 0x2 syz-executor 36019 373940 62463 0 3 0x82 wait syz-executor 3433 48243 62463 0 3 0x82 nanoslp syz-executor 24678 168630 62463 0 3 0x82 nanoslp syz-executor 28928 246623 62463 0 3 0x82 nanoslp syz-executor 62463 495801 51070 0 2 0x2 syz-executor 51070 11274 36809 0 3 0x10008a sigsusp ksh 36809 191605 65474 0 3 0x98 kqread sshd-session 65474 169327 82567 0 3 0x92 kqread sshd-session 62272 199048 1 0 3 0x100083 ttyin getty 82567 96789 1 0 3 0x88 kqread sshd 55155 290106 97211 74 3 0x1100092 bpf pflogd 97211 64501 1 0 3 0x80 sbwait pflogd 91385 509944 83397 73 3 0x1100090 kqread syslogd 83397 419702 1 0 3 0x100082 sbwait syslogd 77089 126708 1 0 3 0x100080 kqread resolvd 93618 339656 83987 77 3 0x100092 kqread dhcpleased 33994 181012 83987 77 3 0x100092 kqread dhcpleased 83987 101753 1 0 3 0x80 kqread dhcpleased 65292 6543 0 0 3 0x14200 bored smr 79692 444841 0 0 2 0x14200 zerothread 84249 522848 0 0 3 0x14200 aiodoned aiodoned 80580 55733 0 0 3 0x14200 syncer update 73371 309443 0 0 3 0x14200 cleaner cleaner 80068 111045 0 0 2 0x14200 reaper 11882 333654 0 0 3 0x14200 pgdaemon pagedaemon 20840 131027 0 0 3 0x14200 bored viomb 35728 315624 0 0 3 0x40014200 acpi0 acpi0 15300 170125 0 0 7 0x40014200 idle1 61918 451201 0 0 3 0x14200 bored softnet1 59973 96372 0 0 3 0x14200 bored softnet0 89286 468322 0 0 3 0x14200 bored systqmp 85142 436828 0 0 3 0x14200 bored systq 34986 174173 0 0 3 0x14200 tmoslp softclockmp 59047 77719 0 0 3 0x40014200 tmoslp softclock 85391 163114 0 0 3 0x40014200 idle0 1 264933 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 62940 (syz-executor) thread 0xffff80002a344570 (465030) exclusive rrwlock inode r = 0 (0xfffffd806f9dfc60) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 vn_open+0x178 sys/kern/vfs_vnops.c:146 #12 doopenat+0x35b sys/kern/vfs_syscalls.c:1155 #13 sys_openat+0x58 sys/kern/vfs_syscalls.c:1094 #14 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #14 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #15 Xsyscall+0x128 Process 51235 (syz-executor) thread 0xffff80002a345cc8 (233159) exclusive rrwlock inode r = 0 (0xfffffd800b09fd58) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 vn_open+0x178 sys/kern/vfs_vnops.c:146 #12 doopenat+0x35b sys/kern/vfs_syscalls.c:1155 #13 sys_openat+0x58 sys/kern/vfs_syscalls.c:1094 #14 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #14 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #15 Xsyscall+0x128 Process 75261 (syz-executor) thread 0xffff80002a344fd0 (399780) exclusive rwlock lockflk r = 0 (0xffffffff83884978) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 lf_advlock+0x227 sys/kern/vfs_lockf.c:260 #3 VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:623 #4 sys_fcntl+0x13e6 sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:-1 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 Process 75261 (syz-executor) thread 0xffff8000fffe94e0 (190438) exclusive rrwlock inode r = 0 (0xfffffd800b09fe80) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 vn_open+0x178 sys/kern/vfs_vnops.c:146 #8 doopenat+0x35b sys/kern/vfs_syscalls.c:1155 #9 sys_open+0x59 sys/kern/vfs_syscalls.c:1063 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 Process 3077 (syz-executor) thread 0xffff80002a255ca0 (101547) exclusive rrwlock inode r = 0 (0xfffffd8071018248) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #13 Xsyscall+0x128 Process 80068 (reaper) thread 0xffff8000ffffdc90 (111045) exclusive rwlock kmmaplk r = 0 (0xffffffff839b4448) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvm_unmap+0x7d sys/uvm/uvm_map.c:1798 #4 km_free+0x87 sys/uvm/uvm_km.c:714 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1ca sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11096 12104K 13927K 166960K 13126 0 pcb 18 15K 16K 166960K 159 0 rtable 223 7K 7K 166960K 536 0 pf 36 17K 81K 166960K 172 0 ifaddr 41 7K 8K 166960K 88 0 ifgroup 59 2K 3K 166960K 136 0 sysctl 4 1K 9K 166960K 13 0 counters 72 37K 38K 166960K 138 0 ioctlops 0 0K 4K 166960K 1721 0 iov 0 0K 16K 166960K 29 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1450 91K 91K 166960K 2050 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 13K 166960K 12 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 25 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 244K 166960K 634 0 sigio 0 0K 0K 166960K 7 0 proc 72 115K 164K 166960K 676 0 subproc 72 4K 4K 166960K 108 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 71 0 in_multi 88 6K 7K 166960K 151 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 23 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 551 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 237 154K 169K 166960K 7564 0 UVM aobj 16 2K 2K 166960K 16 0 pinsyscall 43 86K 103K 166960K 1844 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 22 0 NDP 13 0K 2K 166960K 58 0 temp 56 9078K 9205K 166960K 19877 0 kqueue 13 20K 30K 166960K 113 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 136 0 132 3 0 3 3 0 8 2 rtentry 176 162 0 64 5 0 5 5 0 8 0 unpcb 144 222 0 205 1 0 1 1 0 8 0 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 153 0 148 4 0 4 4 0 8 3 arp 136 27 0 11 1 0 1 1 0 8 0 inpcb 328 731 0 721 13 6 7 7 0 8 5 nd6 152 36 0 15 1 0 1 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1192 20 0 20 3 2 1 1 0 8 1 pppxif 1576 6 0 6 2 1 1 1 0 8 1 pffrag 232 4 0 0 1 0 1 1 0 482 0 pffrnode 88 4 0 0 1 0 1 1 0 8 0 pffrent 40 39 0 35 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 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 9 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 0 1 1 0 8 1 pfstitem 24 48 0 10 1 0 1 1 0 8 0 pfstkey 128 48 0 10 2 0 2 2 0 8 0 pfstate 448 48 0 10 5 0 5 5 0 8 0 pfrule 1360 27 0 21 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 667 0 245 30 2 28 30 0 8 1 art_table 40 668 0 245 5 0 5 5 0 8 0 art_node 32 162 0 73 1 0 1 1 0 8 0 sysvmsgpl 40 71 0 68 2 1 1 1 0 8 0 semapl 112 23 0 13 1 0 1 1 0 8 0 shmpl 112 13 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2455 0 985 93 0 93 93 0 8 0 ffsino 296 2455 0 985 114 0 114 114 0 8 0 nchpl 144 3249 0 1536 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 3025 0 0 169 0 169 169 0 8 0 namei 1024 12425 0 12417 3 2 1 2 0 8 0 percpumem 16 84 0 33 1 0 1 1 0 8 0 kstatmem 264 72 0 44 5 2 3 3 0 8 1 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 11121 0 11121 6 5 1 4 1 8 1 plimitpl 152 147 0 129 1 0 1 1 0 8 0 sigapl 424 946 0 877 9 1 8 8 0 8 0 knotepl 120 355 0 0 11 0 11 11 0 8 0 kqueuepl 224 182 0 173 2 1 1 2 0 8 0 pipepl 344 164 0 137 3 0 3 3 0 8 0 fdescpl 528 909 0 878 3 0 3 3 0 8 0 filepl 160 5842 0 5614 19 3 16 16 0 8 4 lockfpl 104 397 0 395 3 1 2 2 0 8 1 lockfspl 48 85 0 83 1 0 1 1 0 8 0 sessionpl 144 45 0 36 1 0 1 1 0 8 0 pgrppl 48 58 0 41 1 0 1 1 0 8 0 ucredpl 104 770 0 755 1 0 1 1 0 8 0 zombiepl 144 1011 0 1010 1 0 1 1 0 8 0 processpl 1232 946 0 877 6 0 6 6 0 8 0 procpl 664 1727 0 1647 9 1 8 8 0 8 0 sosppl 176 2 0 2 2 1 1 1 0 8 1 sockpl 752 1103 0 1072 23 12 11 17 0 8 7 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 35 0 0 4 0 4 4 0 8 0 mtagpl 96 37 0 0 1 0 1 1 0 8 0 mbufpl 256 411 0 0 26 0 26 26 0 8 0 bufpl 280 4012 0 105 280 0 280 280 0 8 0 anonpl 32 6903 0 0 56 0 56 56 0 246 0 amapchunkpl 152 26106 0 25605 48 14 34 34 0 158 11 amappl16 200 2741 0 2715 12 4 8 8 0 8 5 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 466 0 463 1 0 1 1 0 8 0 amappl13 176 128 0 115 1 0 1 1 0 8 0 amappl12 168 1168 0 1139 2 0 2 2 0 8 0 amappl11 160 30 0 30 1 1 0 1 0 8 0 amappl10 152 69 0 54 1 0 1 1 0 8 0 amappl9 144 267 0 266 1 0 1 1 0 8 0 amappl8 136 118 0 114 1 0 1 1 0 8 0 amappl7 128 155 0 140 1 0 1 1 0 8 0 amappl6 120 197 0 192 1 0 1 1 0 8 0 amappl5 112 97 0 86 1 0 1 1 0 8 0 amappl4 104 297 0 273 1 0 1 1 0 8 0 amappl3 96 4657 0 4556 4 0 4 4 0 8 0 amappl2 88 553 0 489 2 0 2 2 0 8 0 amappl1 80 11379 0 10744 15 0 15 15 0 8 0 amappl 88 6701 0 6542 5 0 5 5 0 92 0 uvmvnodes 80 119 0 0 3 0 3 3 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 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 128 254 0 254 2 1 1 1 0 8 1 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 15 0 0 1 0 1 1 0 8 0 uaddrrnd 24 909 0 878 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 909 0 878 1 0 1 1 0 8 0 vmmpekpl 168 8848 0 8789 3 0 3 3 0 8 0 vmmpepl 168 64248 0 62385 91 0 91 91 0 357 2 vmsppl 488 908 0 877 5 0 5 5 0 8 0 rwobjpl 80 19947 0 18814 27 1 26 26 0 8 2 pdppl 4096 1825 0 1754 107 32 75 85 0 8 4 pvpl 32 13768 0 0 111 0 111 111 0 265 0 pmappl 256 908 0 877 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 306 0 43 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace lf_advlock(ffff8000015bcde0,0,ffff8000fffea220,8,ffff80003c4cd5f0,40) at lf_advlock+0x2fa ls_ref sys/kern/vfs_lockf.c:138 [inline] lf_advlock(ffff8000015bcde0,0,ffff8000fffea220,8,ffff80003c4cd5f0,40) at lf_advlock+0x2fa sys/kern/vfs_lockf.c:278 VOP_ADVLOCK(fffffd806ea297f8,ffff8000fffea220,8,ffff80003c4cd5f0,40) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:623 sys_fcntl(ffff80002a344fd0,ffff80003c4cd750,ffff80003c4cd6a0) at sys_fcntl+0x13e6 sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:-1 syscall(ffff80003c4cd750) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4cd750) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9751eeb8900, count: -5 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299bdff0) 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+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299bdff0) at sched_idle+0x371 sys/kern/kern_sched.c:192 end trace frame: 0x0, count: -5