uvm_fault(0xffffff007f12b948, 0x48, 0, 1) -> e kernel: page fault trap, code=0 Stopped at sogetopt+0x3ae: testb $0x1,0x48(%r15) ddb> ddb> set $lines = 0 ddb> show panic kernel page fault uvm_fault(0xffffff007f12b948, 0x48, 0, 1) -> e sogetopt(ffffff006e490170,ffff8000210c2e20,ffffff006e705788,ffff8000210fa328) at sogetopt+0x3ae end trace frame: 0xffff8000210fa2d0, count: 0 ddb> trace sogetopt(ffffff006e490170,ffff8000210c2e20,ffffff006e705788,ffff8000210fa328) at sogetopt+0x3ae sys_getsockopt(ffff8000210fa3b0,ffff8000210c2e20,ffff8000210a5010) at sys_getsockopt+0x13c syscall(0) at syscall+0x3e4 Xsyscall(6,0,0,0,1,7f7ffffbebc8) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbeb80, count: -4 ddb> show registers rdi 0xffffffff81e1ac30 netlock rsi 0xffff __ALIGN_SIZE+0xefff rbp 0xffff8000210fa270 rbx 0xffffff006d91ab00 rdx 0x1022 __ALIGN_SIZE+0x22 rcx 0x1 rax 0x1 r8 0xffffff006d91ab00 r9 0 r10 0x8b6ea16accbec4a8 r11 0xffffffff8186f430 pool_lock_mtx_leave r12 0x1022 __ALIGN_SIZE+0x22 r13 0xffff __ALIGN_SIZE+0xefff r14 0xffffff006d91ab00 r15 0 rip 0xffffffff81a25ffe sogetopt+0x3ae cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000210fa250 ss 0x10 sogetopt+0x3ae: testb $0x1,0x48(%r15) ddb> show proc PROC (syz-executor9364) pid=384203 stat=onproc flags process=2 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000210c3078,0xffffffff81e956a0 process=0xffff8000210a5010 user=0xffff8000210f5000, vmspace=0xffffff007f12b948 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *56471 384203 74318 0 7 0x2 syz-executor9364 74318 452817 71580 0 3 0x10008a pause ksh 71580 260478 44287 0 3 0x92 select sshd 3879 246509 1 0 3 0x100083 ttyin getty 44287 510322 1 0 3 0x80 select sshd 21790 384146 60926 73 2 0x100090 syslogd 60926 492157 1 0 3 0x100082 netio syslogd 32316 148290 1 77 3 0x100090 poll dhclient 21967 349865 1 0 3 0x80 poll dhclient 21334 313344 0 0 2 0x14200 zerothread 55762 353713 0 0 3 0x14200 aiodoned aiodoned 35012 278323 0 0 3 0x14200 syncer update 10409 32443 0 0 3 0x14200 cleaner cleaner 58435 46163 0 0 3 0x14200 reaper reaper 70989 150172 0 0 3 0x14200 pgdaemon pagedaemon 25990 343055 0 0 3 0x14200 bored crynlk 33981 120958 0 0 3 0x14200 bored crypto 36834 151323 0 0 3 0x40014200 acpi0 acpi0 3014 500201 0 0 3 0x14200 bored softnet 565 511338 0 0 3 0x14200 bored systqmp 95081 211626 0 0 3 0x14200 bored systq 32606 177822 0 0 3 0x40014200 bored softclock 71050 236547 0 0 3 0x40014200 idle0 1 274328 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb>