uvm_fault(0xffffffff8354a888, 0xffff8000281b2010, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs2_balloc+0x9fe: movq 0(%rcx,%rax,8),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 72000 27549 73 0x1100010 0 0K syslogd ffs2_balloc(fffffd806e4c7118,3803f,47,fffffd807f7d35b0,1,ffff80002a06a938) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a06a9c0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806e280998,ffff80002a06abe0,3,fffffd807f7d35b0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_write(fffffd806f8a6688,ffff80002a06abe0,0) at vn_write+0x1d1 sys/kern/vfs_vnops.c:408 dofilewritev(ffff8000ffffdbe8,e,ffff80002a06abe0,0,ffff80002a06aca0) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_writev(ffff8000ffffdbe8,ffff80002a06ad50,ffff80002a06aca0) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002a06ad50) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06ad50) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ac188711fd0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xffffffff8354a888, 0xffff8000281b2010, 0, 1) -> d ddb{0}> trace ffs2_balloc(fffffd806e4c7118,3803f,47,fffffd807f7d35b0,1,ffff80002a06a938) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a06a9c0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806e280998,ffff80002a06abe0,3,fffffd807f7d35b0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_write(fffffd806f8a6688,ffff80002a06abe0,0) at vn_write+0x1d1 sys/kern/vfs_vnops.c:408 dofilewritev(ffff8000ffffdbe8,e,ffff80002a06abe0,0,ffff80002a06aca0) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_writev(ffff8000ffffdbe8,ffff80002a06ad50,ffff80002a06aca0) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002a06ad50) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06ad50) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ac188711fd0, count: -8 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a06a8e0 rbx 0 rdx 0 rcx 0xffff8000281b2000 rax 0x2 r8 0xffffffffffffffff r9 0xffff80002a06a938 r10 0x459625a876519ce4 r11 0x4b2152b0e88c69bd r12 0x10 r13 0x1 r14 0xffffffff r15 0xfffffd8059127148 rip 0xffffffff828c492e ffs2_balloc+0x9fe cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a06a770 ss 0x10 ffs2_balloc+0x9fe: movq 0(%rcx,%rax,8),%r14 ddb{0}> show proc PROC (syslogd) tid=72000 pid=27549 tcnt=1 stat=onproc flags process=1100010 proc=0 runpri=24, usrpri=51, slppri=24, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffd450,0xffff8000ffffccc8 process=0xffff8000ffff9230 user=0xffff80002a065000, vmspace=0xfffffd806ed048a0 estcpu=1, cpticks=5, pctcpu=3.5, user=2, sys=158, intr=355 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92471 368138 77057 0 3 0x80 nanoslp syz-executor 92471 461594 77057 0 3 0x4000080 pipewr syz-executor 12162 389068 1 0 3 0x100083 ttyin getty 2682 64888 62525 0 3 0x82 nanoslp syz-executor 77057 392324 62525 0 3 0x82 nanoslp syz-executor 26298 197703 62525 0 3 0x82 nanoslp syz-executor 49558 357869 0 0 3 0x14200 bored sosplice 62525 94167 85346 0 3 0x82 wait syz-executor 85346 231272 25428 0 3 0x10008a sigsusp ksh 25428 413571 42253 0 3 0x98 kqread sshd-session 42253 441121 30584 0 3 0x92 kqread sshd-session 30584 360843 1 0 3 0x88 kqread sshd 44773 403124 3477 74 3 0x1100092 bpf pflogd 3477 202897 1 0 3 0x80 sbwait pflogd *27549 72000 44627 73 7 0x1100010 syslogd 44627 45967 1 0 3 0x100082 sbwait syslogd 84361 9248 1 0 3 0x100080 kqread resolvd 36203 373393 33404 77 3 0x100092 kqread dhcpleased 50762 123943 33404 77 3 0x100092 kqread dhcpleased 33404 162572 1 0 3 0x80 kqread dhcpleased 38239 58688 0 0 3 0x14200 bored smr 62008 59560 0 0 3 0x14200 pgzero zerothread 40837 223156 0 0 3 0x14200 aiodoned aiodoned 23528 168350 0 0 3 0x14200 syncer update 61509 349389 0 0 3 0x14200 cleaner cleaner 5258 480024 0 0 3 0x14200 reaper reaper 7114 414351 0 0 3 0x14200 pgdaemon pagedaemon 47138 321278 0 0 3 0x14200 bored viomb 9928 48918 0 0 3 0x40014200 acpi0 acpi0 16292 246545 0 0 7 0x40014200 idle1 7740 515378 0 0 3 0x14200 bored softnet3 18602 167950 0 0 3 0x14200 bored softnet2 64722 310852 0 0 3 0x14200 bored softnet1 99379 485837 0 0 3 0x14200 bored softnet0 54849 198035 0 0 3 0x14200 bored systqmp 75996 491373 0 0 3 0x14200 bored systq 63938 20069 0 0 3 0x14200 tmoslp softclockmp 76451 26972 0 0 3 0x40014200 tmoslp softclock 78321 152022 0 0 3 0x40014200 idle0 1 425990 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 27549 (syslogd) thread 0xffff8000ffffdbe8 (72000) exclusive rrwlock inode r = 0 (0xfffffd806e4c71b0) #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 vn_write+0x18d sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_writev+0xd8 sys/kern/sys_generic.c:327 #8 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83561d10) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 vn_write+0x4e sys/kern/vfs_vnops.c:393 #2 dofilewritev+0x23c sys/kern/sys_generic.c:380 #3 sys_writev+0xd8 sys/kern/sys_generic.c:327 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10228 10101K 10351K 166960K 11745 0 pcb 17 12K 12K 166960K 76 0 rtable 215 7K 8K 166960K 615 0 pf 36 18K 19K 166960K 76 0 ifaddr 40 6K 7K 166960K 81 0 ifgroup 55 2K 2K 166960K 95 0 counters 64 36K 36K 166960K 84 0 ioctlops 0 0K 4K 166960K 1549 0 iov 0 0K 12K 166960K 55 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1376 87K 87K 166960K 1691 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 17 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 12 41K 89K 166960K 546 0 sigio 0 0K 0K 166960K 7 0 proc 72 91K 128K 166960K 792 0 subproc 91 5K 7K 166960K 208 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 37 0 in_multi 88 6K 7K 166960K 195 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 493 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 206 64K 80K 166960K 6234 0 UVM aobj 23 2K 2K 166960K 23 0 pinsyscall 37 74K 102K 166960K 1855 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 27 0 NDP 12 0K 2K 166960K 54 0 temp 40 6816K 6944K 166960K 17411 0 kqueue 13 20K 27K 166960K 80 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 77 0 74 1 0 1 1 0 8 0 rtentry 112 202 0 103 4 0 4 4 0 8 0 unpcb 144 332 0 315 6 2 4 4 0 8 3 syncache 336 7 0 7 3 2 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 195 0 190 12 4 8 8 0 8 7 arp 120 35 0 19 1 0 1 1 0 8 0 ipq 40 1 0 1 1 0 1 1 0 8 1 ipqe 40 3 0 3 1 0 1 1 0 8 1 inpcb 336 572 0 564 13 6 7 7 0 8 6 nd6 136 48 0 27 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 kcovpl 48 16 0 9 1 0 1 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 55 0 14 1 0 1 1 0 8 0 pfstkey 128 58 0 17 2 0 2 2 0 8 0 pfstate 376 56 0 16 4 0 4 4 0 8 0 pfrule 1344 24 0 17 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 809 0 397 29 0 29 29 0 8 2 art_table 32 810 0 397 4 0 4 4 0 8 0 art_node 16 201 0 111 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 13 0 3 1 0 1 1 0 8 0 shmpl 112 20 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2090 0 571 96 0 96 96 0 8 0 ffsino 272 2092 0 573 102 0 102 102 0 8 0 nchpl 144 2719 0 1023 64 0 64 64 0 8 0 uvmvnodes 80 2431 0 0 50 0 50 50 0 8 0 vnodes 216 2431 0 0 136 0 136 136 0 8 0 namei 1024 9465 0 9465 2 1 1 2 0 8 1 percpumem 16 56 0 10 1 0 1 1 0 8 0 kstatmem 264 44 0 20 2 0 2 2 0 8 0 scxspl 216 14409 0 14409 10 2 8 8 1 8 8 plimitpl 152 117 0 100 1 0 1 1 0 8 0 sigapl 424 835 0 789 8 2 6 7 0 8 0 futexpl 64 4932 0 4932 2 1 1 1 0 8 1 knotepl 120 553 0 0 17 0 17 17 0 8 0 kqueuepl 216 100 0 91 1 0 1 1 0 8 0 pipepl 320 173 0 145 3 0 3 3 0 8 0 fdescpl 496 816 0 790 6 1 5 5 0 8 0 filepl 152 4230 0 4006 15 2 13 13 0 8 1 lockfpl 104 128 0 126 1 0 1 1 0 8 0 lockfspl 48 56 0 54 1 0 1 1 0 8 0 sessionpl 144 36 0 27 1 0 1 1 0 8 0 pgrppl 48 96 0 79 1 0 1 1 0 8 0 ucredpl 104 511 0 497 1 0 1 1 0 8 0 zombiepl 144 796 0 789 1 0 1 1 0 8 0 processpl 1160 835 0 789 5 1 4 5 0 8 0 procpl 648 1358 0 1311 8 2 6 7 0 8 0 srpgc 96 3 0 3 1 0 1 1 0 8 1 sosppl 168 1 0 1 1 1 0 1 0 8 0 sockpl 664 986 0 958 13 4 9 9 0 8 6 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 227 0 0 29 0 29 29 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 260 0 0 15 0 15 15 0 8 0 bufpl 280 7498 0 1324 442 0 442 442 0 8 0 anonpl 24 199955 0 194534 58 6 52 56 0 185 13 amapchunkpl 152 20535 0 20074 33 4 29 33 0 158 6 amappl16 200 5211 0 5128 23 9 14 16 0 8 9 amappl15 192 13 0 13 1 1 0 1 0 8 0 amappl14 184 139 0 127 1 0 1 1 0 8 0 amappl13 176 7 0 6 1 0 1 1 0 8 0 amappl12 168 1594 0 1567 4 2 2 3 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 129 0 129 1 1 0 1 0 8 0 amappl8 136 22 0 19 1 0 1 1 0 8 0 amappl7 128 132 0 120 1 0 1 1 0 8 0 amappl6 120 244 0 243 1 0 1 1 0 8 0 amappl5 112 183 0 171 1 0 1 1 0 8 0 amappl4 104 349 0 330 1 0 1 1 0 8 0 amappl3 96 3987 0 3899 4 0 4 4 0 8 0 amappl2 88 834 0 767 2 0 2 2 0 8 0 amappl1 80 10263 0 9711 15 1 14 15 0 8 0 amappl 88 5752 0 5608 5 0 5 5 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 22 0 0 1 0 1 1 0 8 0 uaddrrnd 24 816 0 790 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 816 0 790 1 0 1 1 0 8 0 vmmpekpl 168 8407 0 8343 3 0 3 3 0 8 0 vmmpepl 168 60009 0 58321 108 7 101 101 0 357 12 vmsppl 440 815 0 790 6 2 4 5 0 8 0 rwobjpl 56 23946 0 20544 53 0 53 53 0 8 2 pdppl 4096 1639 0 1580 113 40 73 83 0 8 14 pvpl 32 28084 0 0 229 2 227 227 0 265 0 pmappl 248 815 0 790 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 425 0 55 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ffs2_balloc(fffffd806e4c7118,3803f,47,fffffd807f7d35b0,1,ffff80002a06a938) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a06a9c0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd806e280998,ffff80002a06abe0,3,fffffd807f7d35b0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_write(fffffd806f8a6688,ffff80002a06abe0,0) at vn_write+0x1d1 sys/kern/vfs_vnops.c:408 dofilewritev(ffff8000ffffdbe8,e,ffff80002a06abe0,0,ffff80002a06aca0) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_writev(ffff8000ffffdbe8,ffff80002a06ad50,ffff80002a06aca0) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002a06ad50) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06ad50) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ac188711fd0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5