uvm_fault(0xffffff007f12be70, 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(0xffffff007f12be70, 0x48, 0, 1) -> e sogetopt(ffffff00680c6d30,ffff8000211744d0,ffffff006e709d88,ffff80002118af28) at sogetopt+0x3ae end trace frame: 0xffff80002118aed0, count: 0 ddb> trace sogetopt(ffffff00680c6d30,ffff8000211744d0,ffffff006e709d88,ffff80002118af28) at sogetopt+0x3ae sys_getsockopt(ffff80002118afb0,ffff8000211744d0,ffff8000210a5cb0) at sys_getsockopt+0x13c syscall(0) at syscall+0x3e4 Xsyscall(6,0,ffffffffffffff67,0,5,8ba960f0010) at Xsyscall+0x128 end of kernel end trace frame: 0x8bd65a20240, count: -4 ddb> show registers rdi 0xffffffff81e1ac30 netlock rsi 0xffffffff814d5dbc soassertlocked+0x7c rbp 0xffff80002118ae70 rbx 0xffffff006ee5ee00 rdx 0xffff800002acc000 rcx 0x57 rax 0x1 r8 0xffffff006ee5ee00 r9 0 r10 0xf3f2555ade15410d r11 0xffffffff8186f430 pool_lock_mtx_leave r12 0x1022 __ALIGN_SIZE+0x22 r13 0xffff __ALIGN_SIZE+0xefff r14 0xffffff006ee5ee00 r15 0 rip 0xffffffff81a25ffe sogetopt+0x3ae cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002118ae50 ss 0x10 sogetopt+0x3ae: testb $0x1,0x48(%r15) ddb> show proc PROC (syz-executor0) pid=258679 stat=onproc flags process=0 proc=4000000 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff800021174e30,0xffff8000211757a0 process=0xffff8000210a5cb0 user=0xffff800021186000, vmspace=0xffffff007f12be70 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 99091 336913 37742 0 2 0 syz-executor0 *99091 258679 37742 0 7 0x4000000 syz-executor0 51596 429723 37212 0 2 0 syz-executor1 51596 50717 37212 0 3 0x4000080 ttyout syz-executor1 51596 254613 37212 0 3 0x4000080 fsleep syz-executor1 24658 51249 1 0 3 0x100083 ttyin getty 22309 435656 0 0 3 0x14200 bored sosplice 37742 423484 52127 0 3 0x82 nanosleep syz-executor0 37212 261438 52127 0 3 0x82 nanosleep syz-executor1 52127 21371 42699 0 3 0x82 thrsleep syz-fuzzer 52127 235343 42699 0 3 0x4000082 thrsleep syz-fuzzer 52127 449205 42699 0 3 0x4000082 thrsleep syz-fuzzer 52127 415449 42699 0 3 0x4000082 thrsleep syz-fuzzer 52127 311254 42699 0 3 0x4000082 kqread syz-fuzzer 52127 419696 42699 0 3 0x4000082 thrsleep syz-fuzzer 52127 143592 42699 0 3 0x4000082 thrsleep syz-fuzzer 42699 965 7973 0 3 0x10008a pause ksh 7973 84823 70497 0 3 0x92 select sshd 70497 202428 1 0 3 0x80 select sshd 46672 442864 29617 73 2 0x100090 syslogd 29617 377127 1 0 3 0x100082 netio syslogd 56534 256164 1 77 3 0x100090 poll dhclient 9472 248763 1 0 3 0x80 poll dhclient 77922 282913 0 0 2 0x14200 zerothread 42280 45784 0 0 3 0x14200 aiodoned aiodoned 54328 391827 0 0 3 0x14200 syncer update 23127 38482 0 0 3 0x14200 cleaner cleaner 47850 437729 0 0 3 0x14200 reaper reaper 87426 305917 0 0 3 0x14200 pgdaemon pagedaemon 54904 270963 0 0 3 0x14200 bored crynlk 78040 105621 0 0 3 0x14200 bored crypto 3666 285207 0 0 3 0x40014200 acpi0 acpi0 13911 208216 0 0 3 0x14200 bored softnet 77087 163346 0 0 3 0x14200 bored systqmp 23515 424232 0 0 3 0x14200 bored systq 59845 210649 0 0 3 0x40014200 bored softclock 42314 381120 0 0 3 0x40014200 idle0 1 122950 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper