uvm_fault(0xfffffd806af72378, 0x8, 0, 1) -> e kernel: page fault trap, code=0 Stopped at fifo_write+0x6e: movq 0x8(%rax),%r15 TID PID UID PRFLAGS PFLAGS CPU COMMAND 314306 59377 32767 0x10 0 0 syz-executor * 91961 65527 32767 0x10 0x4000000 1K syz-executor fifo_write(ffff80002bf61b00) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80682f7dd0,ffff80002bf61b98,8,fffffd807f7d3478) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd80682f7dd0,ffff800029fe7c00,fe,0,1,e90e3fba141bb878,ffff80002bf61cc0,fffffd80682f7dd0,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80002bf61cc0) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd8065c2d3a8,ffff80002bf61e40,ffff80002bf61e70,ffff80002bf61d70,ffff800029fe7c00) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff8000fffea7c0,20000700,b,20000200) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff80002bf61ff0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002bf61ff0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x94a7da2d950, count: 7 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806af72378, 0x8, 0, 1) -> e ddb{1}> trace fifo_write(ffff80002bf61b00) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80682f7dd0,ffff80002bf61b98,8,fffffd807f7d3478) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd80682f7dd0,ffff800029fe7c00,fe,0,1,e90e3fba141bb878,ffff80002bf61cc0,fffffd80682f7dd0,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80002bf61cc0) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd8065c2d3a8,ffff80002bf61e40,ffff80002bf61e70,ffff80002bf61d70,ffff800029fe7c00) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff8000fffea7c0,20000700,b,20000200) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff80002bf61ff0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002bf61ff0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x94a7da2d950, count: -8 ddb{1}> show registers rdi 0xfffffd80682f7dd0 rsi 0x2794 __ALIGN_SIZE+0x1794 rbp 0xffff80002bf61af0 rbx 0xfffffd80682f7dd0 rdx 0xffff800033fc3000 rcx 0x2793 __ALIGN_SIZE+0x1793 rax 0 r8 0 r9 0x1 r10 0xffff800029b7bff0 r11 0x69f421b4b5ae6b9d r12 0x4000 __ALIGN_SIZE+0x3000 r13 0xffff80002bf61b98 r14 0xffff80002bf61b00 r15 0x1 rip 0xffffffff82ccd08e fifo_write+0x6e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002bf61ac0 ss 0 fifo_write+0x6e: movq 0x8(%rax),%r15 ddb{1}> show proc PROC (syz-executor) tid=91961 pid=65527 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffeaa48,0xffff8000fffeb988 process=0xffff80002eb8b660 user=0xffff80002bf5d000, vmspace=0xfffffd806af72378 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 38890 2177 14577 32767 2 0x10 syz-executor 59377 314306 88448 32767 7 0x10 syz-executor 91220 304959 72937 32767 2 0x10 syz-executor 91220 77800 72937 32767 3 0x4000090 fsleep syz-executor 65527 259574 1626 32767 2 0x10 syz-executor 65527 109345 1626 32767 3 0x4000090 lockf syz-executor *65527 91961 1626 32767 7 0x4000010 syz-executor 36624 285102 51399 32767 2 0x10 syz-executor 36624 166931 51399 32767 3 0x4000090 sbwait syz-executor 36624 503764 51399 32767 3 0x4000090 fsleep syz-executor 31021 126208 77429 32767 3 0x90 nanoslp syz-executor 31021 281067 77429 32767 3 0x4000090 kqpoll syz-executor 31021 124079 77429 32767 3 0x4000090 fsleep syz-executor 31021 13401 77429 32767 3 0x4000090 fsleep syz-executor 87517 378716 18650 32767 3 0x90 nanoslp syz-executor 87517 76327 18650 32767 3 0x4000090 kqpoll syz-executor 87517 156671 18650 32767 3 0x4000090 fsleep syz-executor 1626 214065 19345 32767 3 0x90 nanoslp syz-executor 77429 497244 37735 32767 3 0x90 nanoslp syz-executor 88448 213702 61005 32767 3 0x90 nanoslp syz-executor 18650 289618 64540 32767 3 0x90 nanoslp syz-executor 14577 50013 51136 32767 2 0x10 syz-executor 64540 352785 19381 0 3 0x82 wait syz-executor 72937 272955 37954 32767 3 0x90 nanoslp syz-executor 51399 20565 3627 32767 3 0x90 nanoslp syz-executor 82568 144634 23982 32767 2 0x10 syz-executor 23982 337437 19381 0 3 0x82 wait syz-executor 51136 208228 19381 0 3 0x82 wait syz-executor 3627 319709 19381 0 3 0x82 wait syz-executor 61005 95821 19381 0 3 0x82 wait syz-executor 37735 72005 19381 0 3 0x82 wait syz-executor 19345 135213 19381 0 3 0x82 wait syz-executor 37954 225796 19381 0 3 0x82 wait syz-executor 74341 453150 0 0 3 0x14200 bored sosplice 48872 129270 43679 0 3 0x100082 sbwait ndp 43679 129221 95558 0 3 0x10008a sigsusp sh 95558 222424 1 0 3 0x80 wait syz-executor 19381 268817 65917 0 2 0x2 syz-executor 65917 437082 80910 0 3 0x10008a sigsusp ksh 80910 200949 92172 0 3 0x98 kqread sshd-session 92172 26376 52572 0 3 0x92 kqread sshd-session 33796 360840 1 0 3 0x100083 ttyin getty 52572 118754 1 0 3 0x88 kqread sshd 38396 485464 39693 73 3 0x1100090 kqread syslogd 39693 433432 1 0 3 0x100082 sbwait syslogd 33630 203103 1 0 3 0x100080 kqread resolvd 77027 387472 78970 77 3 0x100092 kqread dhcpleased 88061 299634 78970 77 3 0x100092 kqread dhcpleased 78970 481230 1 0 3 0x80 kqread dhcpleased 14453 116778 0 0 3 0x14200 bored smr 43114 82637 0 0 2 0x14200 zerothread 64832 473363 0 0 3 0x14200 aiodoned aiodoned 6035 133281 0 0 3 0x14200 syncer update 99265 318024 0 0 3 0x14200 cleaner cleaner 62112 27564 0 0 3 0x14200 reaper reaper 81677 523753 0 0 3 0x14200 pgdaemon pagedaemon 27589 436659 0 0 3 0x14200 bored viomb 28688 94815 0 0 3 0x40014200 acpi0 acpi0 10509 128198 0 0 3 0x40014200 idle1 67603 298503 0 0 3 0x14200 bored softnet3 49620 511418 0 0 3 0x14200 bored softnet2 8108 5073 0 0 3 0x14200 bored softnet1 88969 489233 0 0 3 0x14200 bored softnet0 72557 444591 0 0 3 0x14200 bored systqmp 286 180489 0 0 3 0x14200 bored systq 96137 226796 0 0 3 0x14200 tmoslp softclockmp 72641 369165 0 0 3 0x40014200 tmoslp softclock 54149 85599 0 0 3 0x40014200 idle0 1 128908 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 59377 (syz-executor) thread 0xffff8000ffff6cc0 (314306) exclusive rwlock amaplk r = 0 (0xfffffd8071033518) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvm_fault_check+0x521 sys/uvm/uvm_fault.c:782 #2 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #3 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #4 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806af72d00) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 #3 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 Process 65527 (syz-executor) thread 0xffff8000fffea7c0 (91961) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835eca00) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 __mp_acquire_count+0x58 #2 mi_switch+0x658 sys/kern/sched_bsd.c:460 #3 sleep_finish+0x219 sys/kern/kern_synch.c:416 #4 biowait+0xc1 sys/kern/vfs_bio.c:1254 #5 bwrite+0x2e2 sys/kern/vfs_bio.c:766 #6 ffs_update+0x34c sys/ufs/ffs/ffs_inode.c:111 #7 ufs_direnter+0x721 sys/ufs/ufs/ufs_lookup.c:726 #8 ufs_makeinode+0x51e sys/ufs/ufs/ufs_vnops.c:1764 #9 ufs_symlink+0x54 sys/ufs/ufs/ufs_vnops.c:1293 #10 VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 #11 dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 #12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c27da38) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x171 sys/ufs/ufs/ufs_ihash.c:95 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #9 ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1728 #10 ufs_symlink+0x54 sys/ufs/ufs/ufs_vnops.c:1293 #11 VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 #12 dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 Process 82568 (syz-executor) thread 0xffff8000fffe91e8 (144634) exclusive rrwlock inode r = 0 (0xfffffd806c27db48) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x171 sys/ufs/ufs/ufs_ihash.c:95 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cfd6f80) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 10025K 10035K 166960K 11704 0 pcb 17 14K 16K 166960K 19 0 rtable 214 6K 7K 166960K 4552 0 pf 29 16K 16K 166960K 309 0 ifaddr 38 8K 9K 166960K 596 0 ifgroup 46 2K 2K 166960K 600 0 sysctl 3 0K 1K 166960K 4 0 counters 62 36K 36K 166960K 336 0 ioctlops 0 0K 2K 166960K 198 0 iov 0 0K 12K 166960K 179 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1480 93K 93K 166960K 3975 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 42 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 155 0 dirhash 18 3K 4K 166960K 72 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 28 105K 169K 166960K 4138 0 sigio 0 0K 0K 166960K 157 0 proc 59 91K 176K 166960K 4475 0 subproc 117 7K 13K 166960K 2301 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 445 0 in_multi 88 6K 7K 166960K 1703 0 ether_multi 1 0K 0K 166960K 25 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 2526 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 262 82K 139K 166960K 30389 0 UVM aobj 64 5K 5K 166960K 67 0 pinsyscall 50 100K 134K 166960K 8682 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 209 0 NDP 10 0K 2K 166960K 435 0 temp 78 6824K 6951K 166960K 30449 0 kqueue 14 22K 30K 166960K 333 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 531 0 527 3 2 1 3 0 8 0 rtentry 112 1639 0 1539 8 4 4 4 0 8 1 unpcb 144 2108 0 2085 23 17 6 6 0 8 5 syncache 336 22 0 22 11 10 1 1 0 8 1 tcpqe 32 13 0 13 6 5 1 1 0 8 1 tcpcb 808 1182 0 1172 32 30 2 14 0 8 0 arp 120 292 0 276 1 0 1 1 0 8 0 ipq 40 10 0 8 1 0 1 1 0 8 0 ipqe 40 18 0 16 1 0 1 1 0 8 0 inpcb 336 3543 0 3524 43 38 5 18 0 8 2 nd6 136 462 0 440 1 0 1 1 0 8 0 kcovpl 48 177 0 168 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 6650 0 6233 80 53 27 31 0 8 0 art_table 32 6651 0 6233 4 0 4 4 0 8 0 art_node 16 1638 0 1547 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 11 1 0 1 1 0 8 0 semapl 112 153 0 143 1 0 1 1 0 8 0 shmpl 112 64 0 3 2 0 2 2 0 8 0 dirhash 1024 58 0 36 5 1 4 4 0 8 1 dino2pl 256 4670 0 2782 119 0 119 119 0 8 0 ffsino 272 4670 0 2782 126 0 126 126 0 8 0 nchpl 144 7303 0 5356 73 0 73 73 0 8 0 uvmvnodes 80 6980 0 0 143 0 143 143 0 8 0 vnodes 216 6980 0 0 388 0 388 388 0 8 0 namei 1024 37738 0 37737 20 18 2 2 0 8 1 percpumem 16 182 0 137 1 0 1 1 0 8 0 kstatmem 264 294 0 274 2 0 2 2 0 8 0 scxspl 216 80282 0 80282 21 18 3 8 1 8 3 plimitpl 152 974 0 948 3 1 2 2 0 8 0 sigapl 424 4076 0 4017 10 1 9 9 0 8 1 futexpl 64 26518 0 26513 11 10 1 1 0 8 0 knotepl 120 716 0 0 15 0 15 15 0 8 0 kqueuepl 216 654 0 642 7 4 3 5 0 8 2 pipepl 320 865 0 834 16 11 5 9 0 8 0 fdescpl 496 4057 0 4017 13 6 7 8 0 8 0 filepl 152 20257 0 19975 33 17 16 18 0 8 1 lockfpl 104 590 0 585 1 0 1 1 0 8 0 lockfspl 48 206 0 203 1 0 1 1 0 8 0 sessionpl 144 162 0 145 1 0 1 1 0 8 0 pgrppl 48 471 0 446 1 0 1 1 0 8 0 ucredpl 104 3555 0 3536 1 0 1 1 0 8 0 zombiepl 144 4017 0 4017 1 0 1 1 0 8 1 processpl 1160 4076 0 4017 6 0 6 6 0 8 0 procpl 648 7062 0 6993 7 0 7 7 0 8 0 srpgc 96 8 0 8 4 4 0 1 0 8 0 sosppl 168 26 0 24 10 9 1 1 0 8 0 sockpl 664 6217 0 6171 74 59 15 20 0 8 10 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 315 0 0 28 0 28 28 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 555 0 0 23 0 23 23 0 8 0 bufpl 280 10534 0 2746 557 0 557 557 0 8 0 anonpl 24 546497 0 542735 123 49 74 79 0 185 30 amapchunkpl 152 94700 0 94125 67 31 36 45 0 158 9 amappl16 200 9345 0 9331 116 106 10 26 0 8 8 amappl15 192 30 0 30 1 1 0 1 0 8 0 amappl14 184 406 0 395 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 6854 0 6814 6 3 3 3 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 1 0 1 0 8 0 amappl9 144 143 0 143 1 1 0 1 0 8 0 amappl8 136 17 0 15 1 0 1 1 0 8 0 amappl7 128 395 0 382 1 0 1 1 0 8 0 amappl6 120 1531 0 1528 1 0 1 1 0 8 0 amappl5 112 712 0 702 1 0 1 1 0 8 0 amappl4 104 714 0 696 1 0 1 1 0 8 0 amappl3 96 16493 0 16383 4 0 4 4 0 8 0 amappl2 88 4596 0 4510 4 1 3 3 0 8 0 amappl1 80 28736 0 28154 15 0 15 15 0 8 0 amappl 88 28911 0 28706 7 1 6 7 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 66 0 3 2 0 2 2 0 8 0 uaddrrnd 24 4057 0 4017 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4057 0 4017 1 0 1 1 0 8 0 vmmpekpl 168 35186 0 35106 6 1 5 5 0 8 1 vmmpepl 168 249582 0 247460 172 55 117 117 0 357 18 vmsppl 440 4056 0 4017 13 6 7 7 0 8 1 rwobjpl 56 75176 0 67208 124 6 118 118 0 8 4 pdppl 4096 8121 0 8034 551 462 89 119 0 8 2 pvpl 32 33951 0 0 276 2 274 274 0 265 0 pmappl 248 4056 0 4017 6 2 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1047 0 614 14 0 14 14 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8345fff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 __mp_lock(ffffffff835ec7f8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835ec7f8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 syscall(ffff80002b32c450) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002b32c450) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x713890a6c7c0, count: 8 ddb{0}> trace x86_ipi_db(ffffffff8345fff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 __mp_lock(ffffffff835ec7f8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835ec7f8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 syscall(ffff80002b32c450) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002b32c450) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x713890a6c7c0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at fifo_write+0x6e: movq 0x8(%rax),%r15 fifo_write(ffff80002bf61b00) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80682f7dd0,ffff80002bf61b98,8,fffffd807f7d3478) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd80682f7dd0,ffff800029fe7c00,fe,0,1,e90e3fba141bb878,ffff80002bf61cc0,fffffd80682f7dd0,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80002bf61cc0) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd8065c2d3a8,ffff80002bf61e40,ffff80002bf61e70,ffff80002bf61d70,ffff800029fe7c00) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff8000fffea7c0,20000700,b,20000200) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff80002bf61ff0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002bf61ff0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x94a7da2d950, count: 7 ddb{1}> trace fifo_write(ffff80002bf61b00) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80682f7dd0,ffff80002bf61b98,8,fffffd807f7d3478) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd80682f7dd0,ffff800029fe7c00,fe,0,1,e90e3fba141bb878,ffff80002bf61cc0,fffffd80682f7dd0,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80002bf61cc0) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd8065c2d3a8,ffff80002bf61e40,ffff80002bf61e70,ffff80002bf61d70,ffff800029fe7c00) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff8000fffea7c0,20000700,b,20000200) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff80002bf61ff0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002bf61ff0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x94a7da2d950, count: -8