uvm_fault(0xffffff007f12a738, 0x600011c, 0, 1) -> e kernel: page fault trap, code=0 Stopped at m_free+0x2a: movswq 0x1c(%r14),%rdx ddb> ddb> set $lines = 0 ddb> show panic kernel page fault uvm_fault(0xffffff007f12a738, 0x600011c, 0, 1) -> e m_free(6000100) at m_free+0x2a end trace frame: 0xffff800021166400, count: 0 ddb> trace m_free(6000100) at m_free+0x2a mq_purge(ffff800001ade800) at mq_purge+0x6d switchclose(ffff8000ffffd070,ffff800021166478,ffffffff8102f387,ffff800021166420) at switchclose+0x77 spec_close(ffffffff81e3cf70) at spec_close+0x271 VOP_CLOSE(ffffff0063f12308,ffff8000ffffd070,ffffff007f7c7a80,3) at VOP_CLOSE+0x5f vn_closefile(ffff8000ffffd070,ffffff0067ffcd30) at vn_closefile+0xfc fdrop(ffffff0067ffcd30,ffff8000ffffd070) at fdrop+0xa4 closef(ffff8000ffffd070,ffffff006e9e1358) at closef+0xd5 fdfree(ffff8000210602f8) at fdfree+0x98 exit1(ffff800021166740,ffff8000ffffd070,ffff8000210602f8) at exit1+0x22f sys_exit(ffffffff8128e963,ffff800021166660,ffff800021166740) at sys_exit+0x13 syscall(0) at syscall+0x3e4 Xsyscall(6,1,0,1,0,7f7ffffbf1e0) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbf190, count: -13 ddb> show registers rdi 0x7 rsi 0xf0 rbp 0xffff8000211663d0 rbx 0xffffffff8102f310 switchclose rdx 0xffff8000211662e0 rcx 0xffffffff81e8aa30 mbstat_boot_boot_cpumem rax 0 r8 0 r9 0 r10 0 r11 0xffffffff81635ed0 pool_lock_mtx_leave r12 0xffffff006f96ae00 r13 0x236161bc r14 0x6000100 __kernel_end_phys+0x4000100 r15 0x6000100 __kernel_end_phys+0x4000100 rip 0xffffffff815aebfa m_free+0x2a cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000211663b0 ss 0x10 m_free+0x2a: movswq 0x1c(%r14),%rdx ddb> show proc PROC (syz-executor0) pid=67774 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffc4b8,0xffffffff81ea92d0 process=0xffff8000210602f8 user=0xffff800021161000, vmspace=0xffffff007f12a738 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 94853 485435 0 0 3 0x14200 bored sosplice 98476 308111 80357 0 3 0x82 nanosleep syz-executor0 88162 148718 80357 0 3 0x2 biowait syz-executor1 80357 185354 70665 0 3 0x82 thrsleep syz-fuzzer 80357 76618 70665 0 3 0x4000082 nanosleep syz-fuzzer 80357 504971 70665 0 3 0x4000082 thrsleep syz-fuzzer 80357 496538 70665 0 3 0x4000082 thrsleep syz-fuzzer 80357 314613 70665 0 3 0x4000082 kqread syz-fuzzer 80357 101092 70665 0 3 0x4000082 thrsleep syz-fuzzer 80357 97395 70665 0 3 0x4000082 thrsleep syz-fuzzer 70665 171248 80319 0 3 0x10008a pause ksh 80319 200963 8399 0 3 0x92 select sshd 61308 455683 1 0 3 0x100083 ttyin getty 8399 333383 1 0 3 0x80 select sshd 44281 67885 35717 73 2 0x100090 syslogd 35717 331598 1 0 3 0x100082 netio syslogd 70680 331370 1 77 3 0x100090 poll dhclient 91902 13630 1 0 3 0x80 poll dhclient 93014 422880 0 0 2 0x14200 zerothread 87891 439649 0 0 3 0x14200 aiodoned aiodoned 86067 297111 0 0 3 0x14200 syncer update 44473 412577 0 0 3 0x14200 cleaner cleaner 3435 128913 0 0 3 0x14200 reaper reaper 13509 190937 0 0 3 0x14200 pgdaemon pagedaemon 68306 459376 0 0 3 0x14200 bored crynlk 57232 411826 0 0 3 0x14200 bored crypto 47313 336256 0 0 3 0x40014200 acpi0 acpi0 31579 27099 0 0 3 0x14200 bored softnet 41781 61985 0 0 3 0x14200 bored systqmp 91338 291012 0 0 3 0x14200 bored systq 15047 69111 0 0 3 0x40014200 bored softclock 45545 465110 0 0 3 0x40014200 idle0 1 353789 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper