load: 0.59 cmd: kernel: protection fault trap, code=0 Stopped at lf_findoverlap+0xbb: movq 0x18(%rbx),%rax ddb{1}> ddb{1}> set $lines = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace lf_findoverlap(9f259cffcefce8af,0,ffffff006e2abbc8,ffff80000193f260,128) at lf_findoverlap+0xbb sys/kern/vfs_lockf.c:621 lf_setlock() at lf_setlock+0xbc lf_getblock sys/kern/vfs_lockf.c:586 [inline] lf_setlock() at lf_setlock+0xbc sys/kern/vfs_lockf.c:314 VOP_ADVLOCK(2ee6ed1779938341,ffffff0068559010,6,2,ffffff0065c0bac0) at VOP_ADVLOCK+0x74 sys/kern/vfs_vops.c:699 sys_flock(1585cb69f2c02fe4,830,ffff800021062978) at sys_flock+0x163 syscall(7326a56cb70c3cee) at syscall+0x496 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(7326a56cb70c3cee) at syscall+0x496 sys/arch/amd64/amd64/trap.c:583 Xsyscall(6,0,ffffffffffffff4f,0,2,1c7c4100010) at Xsyscall+0x128 end of kernel end trace frame: 0x1c9f3ccd4f0, count: -6 ddb{1}> show registers rdi 0xdeaf4152deaf4152 rsi 0xffffffff8179e605 lf_findoverlap+0x95 rbp 0xffff800021145690 rbx 0xdeaf4152deaf4152 rdx 0xffff8000039fb000 rcx 0x192 rax 0xffff8000039fb000 r8 0xffff8000211456d8 r9 0x1 r10 0x8174bcd3c371f659 r11 0x95bfca46d07ec0ba r12 0x2 r13 0xffffff006e2abbc8 r14 0xffff8000211456d8 r15 0 rip 0xffffffff8179e62b lf_findoverlap+0xbb cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800021145630 ss 0x10 lf_findoverlap+0xbb: movq 0x18(%rbx),%rax ddb{1}> show proc PROC (syz-executor0) pid=358513 stat=onproc flags process=0 proc=4000000 pri=40, usrpri=69, nice=20 forw=0xffffffffffffffff, list=0xffff8000210624c8,0xffff800021062730 process=0xffff8000210646a0 user=0xffff800021140000, vmspace=0xffffff007f00c630 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 58436 458707 75235 0 2 0 syz-executor0 *58436 358513 75235 0 7 0x4000000 syz-executor0 58436 450404 75235 0 7 0x4000000 syz-executor0 64978 206398 1 0 3 0x100083 ttyin getty 75235 523810 33139 0 3 0x82 nanosleep syz-executor0 1521 444277 33139 0 3 0x82 nanosleep syz-executor1 28436 231678 0 0 3 0x14200 bored sosplice 33139 337926 36128 0 3 0x82 kqread syz-fuzzer 33139 91064 36128 0 3 0x4000082 thrsleep syz-fuzzer 33139 369311 36128 0 3 0x4000082 thrsleep syz-fuzzer 33139 333039 36128 0 3 0x4000082 thrsleep syz-fuzzer 33139 150997 36128 0 3 0x4000082 thrsleep syz-fuzzer 33139 359999 36128 0 3 0x4000082 thrsleep syz-fuzzer 33139 150784 36128 0 3 0x4000082 thrsleep syz-fuzzer 33139 32153 36128 0 3 0x4000082 thrsleep syz-fuzzer 33139 432053 36128 0 3 0x4000082 thrsleep syz-fuzzer 33139 295693 36128 0 3 0x4000082 thrsleep syz-fuzzer 36128 214757 79067 0 3 0x10008a pause ksh 79067 274093 35070 0 3 0x92 select sshd 35070 205987 1 0 3 0x80 select sshd 28753 50500 24188 73 3 0x100090 kqread syslogd 24188 269459 1 0 3 0x100082 netio syslogd 73023 55309 1 77 3 0x100090 poll dhclient 4565 370435 1 0 3 0x80 poll dhclient 38367 405434 0 0 2 0x14200 zerothread 19560 294917 0 0 3 0x14200 aiodoned aiodoned 63098 256826 0 0 3 0x14200 syncer update 67118 360748 0 0 3 0x14200 cleaner cleaner 86300 108351 0 0 3 0x14200 reaper reaper 83225 164032 0 0 3 0x14200 pgdaemon pagedaemon 40198 432265 0 0 3 0x14200 bored crynlk 41641 68350 0 0 3 0x14200 bored crypto 79532 112245 0 0 3 0x40014200 acpi0 acpi0 23142 194950 0 0 3 0x40014200 idle1 1884 246646 0 0 3 0x14200 bored softnet 42644 83526 0 0 3 0x14200 bored systqmp 6378 179918 0 0 3 0x14200 bored systq 40589 60919 0 0 3 0x40014200 bored softclock 54102 486331 0 0 3 0x40014200 idle0 1 430371 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper