Y6ChS av.all* !xz#ͨ mɣ:Z =^ PSb%:ܹƁ;yn$­F6.[,!,w^E,o2S4ޕApP<.϶R-\{d6Տsv1Y.1gR$JÆ l`-mijT4gSp#n8`skernel: protection fault trap, code=0 Stopped at lf_findoverlap+0xab: 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(0,ffffff0078791501,ffff800001ae1ee0,ffffff007891ba28,0) at lf_findoverlap+0xab sys/kern/vfs_lockf.c:621 lf_setlock() at lf_setlock+0xad lf_getblock sys/kern/vfs_lockf.c:586 [inline] lf_setlock() at lf_setlock+0xad sys/kern/vfs_lockf.c:314 VOP_ADVLOCK(ffffff0068ce99e8,6,2,ffffff0078791590,ffffff007f7c6848) at VOP_ADVLOCK+0x67 sys/kern/vfs_vops.c:699 sys_flock(830,ffff8000210a3c38,0) at sys_flock+0x156 syscall(0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:583 Xsyscall(6,0,ffffffffffffff4f,0,2,c4ee0657010) at Xsyscall+0x128 end of kernel end trace frame: 0xc51967db9e0, count: -6 ddb{1}> show registers rdi 0xdeafbeaddeafbead rsi 0xffffffff810c3945 lf_findoverlap+0x85 rbp 0xffff800021197b90 rbx 0xdeafbeaddeafbead rdx 0xffff800000ad7000 rcx 0x11d rax 0xffff800000ad7000 r8 0xffff800021197bd0 r9 0x1 r10 0x3cf2f0be4696ffea r11 0xffffffff81aea880 pvclock_get_timecount r12 0x2 r13 0xffffff007891ba28 r14 0xffff800021197bd0 r15 0 rip 0xffffffff810c396b lf_findoverlap+0xab cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800021197b40 ss 0x10 lf_findoverlap+0xab: movq 0x18(%rbx),%rax ddb{1}> show proc PROC (syz-executor0) pid=261762 stat=onproc flags process=0 proc=4000000 pri=40, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff8000210a2018,0xffff8000210a2be0 process=0xffff800021071c70 user=0xffff800021192000, vmspace=0xffffff007f124c60 estcpu=24, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73607 434636 63777 0 2 0 syz-executor0 *73607 261762 63777 0 7 0x4000000 syz-executor0 73607 379764 63777 0 2 0x4000080 syz-executor0 73607 247089 63777 0 2 0x4000000 syz-executor0 73607 462924 63777 0 7 0x4000080 syz-executor0 91746 280178 0 0 3 0x14200 bored sosplice 33118 189609 53726 0 3 0x82 piperd syz-executor1 63777 228040 53726 0 3 0x82 nanosleep syz-executor0 53726 261815 60197 0 3 0x82 kqread syz-fuzzer 53726 278145 60197 0 3 0x4000082 thrsleep syz-fuzzer 53726 56495 60197 0 3 0x4000082 thrsleep syz-fuzzer 53726 453319 60197 0 3 0x4000082 thrsleep syz-fuzzer 53726 82429 60197 0 3 0x4000082 thrsleep syz-fuzzer 53726 470447 60197 0 3 0x4000082 thrsleep syz-fuzzer 53726 520896 60197 0 3 0x4000082 thrsleep syz-fuzzer 53726 325160 60197 0 3 0x4000082 thrsleep syz-fuzzer 53726 479661 60197 0 3 0x4000082 thrsleep syz-fuzzer 53726 428194 60197 0 3 0x4000082 thrsleep syz-fuzzer 60197 31935 99111 0 3 0x10008a pause ksh 99111 393736 67591 0 3 0x92 select sshd 55444 161260 1 0 3 0x100083 ttyin getty 67591 455715 1 0 3 0x80 select sshd 49600 305060 76016 73 3 0x100090 kqread syslogd 76016 39211 1 0 3 0x100082 netio syslogd 6821 451890 1 77 3 0x100090 poll dhclient 34855 511091 1 0 3 0x80 poll dhclient 53304 251533 0 0 3 0x14200 pgzero zerothread 50707 365400 0 0 3 0x14200 aiodoned aiodoned 14494 322403 0 0 3 0x14200 syncer update 69708 191217 0 0 3 0x14200 cleaner cleaner 79265 362120 0 0 3 0x14200 reaper reaper 2395 207861 0 0 3 0x14200 pgdaemon pagedaemon 60390 120776 0 0 3 0x14200 bored crynlk 32824 449566 0 0 3 0x14200 bored crypto 22872 167182 0 0 3 0x40014200 acpi0 acpi0 15101 383406 0 0 3 0x40014200 idle1 74604 54501 0 0 3 0x14200 bored softnet 96391 4666 0 0 3 0x14200 bored systqmp 80221 398421 0 0 3 0x14200 bored systq 98988 438966 0 0 3 0x40014200 bored softclock 37914 100327 0 0 3 0x40014200 idle0 1 375648 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper