Warning: Permanently added '10.128.10.60' (ECDSA) to the list of known hosts. executing program kernel: protection fault trap, code=0 Stopped at m_extfree+0x3d: movq %rax,0x90(%r15) ddb> ddb> set $lines = 0 ddb> show panic the kernel did not panic ddb> trace m_extfree(da3dcd11548f7e3f) at m_extfree+0x3d m_free(ffffff006db88400) at m_free+0xee m_freem(16) at m_freem+0x2d soreceive(0,ffffff006e6fea88,0,0,ffff8000210fcc50,ffff8000210fcb60) at soreceive+0x1131 recvit(ffff8000210fcc80,ffff8000210fcd88,ffff8000210fcd70,ffff8000210c3078,0) at recvit+0x28c sys_recvmsg(ffff8000210fce10,ffff8000210c3078,ffff8000210a5660) at sys_recvmsg+0x120 syscall(0) at syscall+0x3e4 Xsyscall(6,0,0,0,1,7f7fffff21a8) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff2160, count: -8 ddb> show registers rdi 0x7 rsi 0x42 rbp 0xffff8000210fca50 rbx 0 rdx 0xffffffffffffbeef rcx 0xffffffff81e8e3b0 mbstat_boot_boot_cpumem rax 0x371496c40e18ba99 r8 0 r9 0xffff8000210c3078 r10 0xda3dcd11548f7e3f r11 0xffffffff816a34a0 pool_lock_mtx_leave r12 0xdead __ALIGN_SIZE+0xcead r13 0xffffff006e6fea88 r14 0xffffff006db88400 r15 0x307c2f590a204b3c rip 0xffffffff81adbf1d m_extfree+0x3d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000210fca40 ss 0x10 m_extfree+0x3d: movq %rax,0x90(%r15) ddb> show proc PROC (syz-executor8170) pid=96642 stat=onproc flags process=2 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000210c32d0,0xffffffff81eafaa0 process=0xffff8000210a5660 user=0xffff8000210f7000, vmspace=0xffffff007f12b528 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *49901 96642 36687 0 7 0x2 syz-executor8170 36687 1941 64844 0 3 0x10008a pause ksh 64844 149296 32328 0 3 0x92 select sshd 33033 329785 1 0 3 0x100083 ttyin getty 32328 468257 1 0 3 0x80 select sshd 67061 368879 40352 73 3 0x100090 kqread syslogd 40352 238667 1 0 3 0x100082 netio syslogd 41089 275142 1 77 3 0x100090 poll dhclient 58298 351436 1 0 3 0x80 poll dhclient 99277 312932 0 0 2 0x14200 zerothread 92306 334436 0 0 3 0x14200 aiodoned aiodoned 2795 448611 0 0 3 0x14200 syncer update 85307 328015 0 0 3 0x14200 cleaner cleaner 49730 420142 0 0 3 0x14200 reaper reaper 88669 404666 0 0 3 0x14200 pgdaemon pagedaemon 35323 210131 0 0 3 0x14200 bored crynlk 88011 297031 0 0 3 0x14200 bored crypto 36143 35021 0 0 3 0x40014200 acpi0 acpi0 37234 125684 0 0 3 0x14200 bored softnet 30399 2859 0 0 3 0x14200 bored systqmp 6370 291812 0 0 3 0x14200 bored systq 12619 110843 0 0 3 0x40014200 bored softclock 1096 371011 0 0 3 0x40014200 idle0 1 259157 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb>