./file0./file0./file0./file0 κΟuvm_fault(0xffffffff839c1410, 0xffff800026422048, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs2_balloc+0xa0d: movq 0(%rcx,%rax,8),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND *416952 81102 0 0x2 0x1 1K syz-executor 417924 87790 0 0x2 0x1 0 syz-executor ffs2_balloc(fffffd805fe6ae28,54d96,50,fffffd80097fb410,1,ffff800033be48f8) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff800033be4980) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd807be278c8,ffff800033be4a30,3,fffffd80097fb410) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800033feed20,fffffd807be278c8,fffffd80097fb410,ffff800033be4b00,ffff800033be4ae0) at ktrwriteraw+0x1be sys/kern/kern_ktrace.c:691 ktrsysret(ffff800033feed20,5b,0,ffff800033be4bd0) at ktrsysret+0x192 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff800033feed20,5b,0,ffff800033be4bd0) at ktrsysret+0x192 sys/kern/kern_ktrace.c:209 syscall(ffff800033be4c80) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff800033be4c80) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:769 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c13010b83c0, count: 8 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(0xffffffff839c1410, 0xffff800026422048, 0, 1) -> d ddb{1}> trace ffs2_balloc(fffffd805fe6ae28,54d96,50,fffffd80097fb410,1,ffff800033be48f8) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff800033be4980) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd807be278c8,ffff800033be4a30,3,fffffd80097fb410) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800033feed20,fffffd807be278c8,fffffd80097fb410,ffff800033be4b00,ffff800033be4ae0) at ktrwriteraw+0x1be sys/kern/kern_ktrace.c:691 ktrsysret(ffff800033feed20,5b,0,ffff800033be4bd0) at ktrsysret+0x192 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff800033feed20,5b,0,ffff800033be4bd0) at ktrsysret+0x192 sys/kern/kern_ktrace.c:209 syscall(ffff800033be4c80) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff800033be4c80) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:769 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c13010b83c0, count: -7 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800033be48a0 rbx 0 rdx 0 rcx 0xffff800026422000 rax 0x9 r8 0xffffffffffffffff r9 0xffff800033be48f8 r10 0xe2d010be86abbf83 r11 0x358c79d2fc7b7c27 r12 0x1 r13 0xffff800000b50000 r14 0xffff800033be4730 r15 0xfffffd805fd416c0 rip 0xffffffff81a086bd ffs2_balloc+0xa0d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800033be4720 ss 0 ffs2_balloc+0xa0d: movq 0(%rcx,%rax,8),%r14 ddb{1}> show proc PROC (syz-executor) tid=416952 pid=81102 tcnt=1 stat=onproc flags process=2 proc=1 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffe0fc8,0xffff800033fefcc0 process=0xffff8000fffdd368 user=0xffff800033bdf000, vmspace=0xfffffd806c0625d8 estcpu=36, cpticks=31, pctcpu=0.12, user=0, sys=30, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 48438 38580 69173 0 2 0 syz-executor 48438 435862 69173 0 2 0x4000000 syz-executor 24961 288548 81064 0 2 0 syz-executor 24961 6307 81064 0 3 0x4000080 fsleep syz-executor 12062 48374 87790 0 2 0 syz-executor 12062 202272 87790 0 2 0x4000000 syz-executor 52181 311606 9461 0 2 0 syz-executor 43973 278565 49603 0 2 0 syz-executor 43973 454008 49603 0 3 0x4000080 kqread syz-executor 43973 241229 49603 0 3 0x4000080 fsleep syz-executor 6766 305639 81102 0 2 0x10 syz-executor 6766 23828 81102 0 3 0x4000090 fsleep syz-executor 6766 240402 81102 0 3 0x4000090 fsleep syz-executor 54231 204431 38730 0 2 0 syz-executor 54231 491176 38730 0 3 0x4000080 fsleep syz-executor 54231 391575 38730 0 3 0x4000080 fsleep syz-executor 85850 6082 42144 -1 2 0x1000011 syz-executor 85850 306294 42144 -1 3 0x5000090 kqpoll syz-executor 85850 374885 42144 -1 3 0x5000090 ttyout syz-executor 85850 112325 42144 -1 3 0x5000090 fsleep syz-executor 85850 446525 42144 -1 3 0x5000090 fsleep syz-executor 49603 21832 42528 0 2 0xc82 syz-executor *81102 416952 42528 0 7 0x3 syz-executor 63131 416319 0 0 3 0x14200 bored sosplice 60992 449776 0 0 3 0x14280 nfsidl nfsio 46767 430688 0 0 3 0x14280 nfsidl nfsio 3593 34122 0 0 3 0x14280 nfsidl nfsio 78604 118672 0 0 3 0x14280 nfsidl nfsio 66042 462705 0 0 3 0x14280 nfsidl nfsio 65844 412723 0 0 3 0x14280 nfsidl nfsio 33459 157275 0 0 3 0x14280 nfsidl nfsio 64808 471879 0 0 3 0x14280 nfsidl nfsio 79810 67572 0 0 3 0x14280 nfsidl nfsio 85501 133567 0 0 3 0x14280 nfsidl nfsio 89813 175652 0 0 3 0x14280 nfsidl nfsio 94716 488223 0 0 3 0x14280 nfsidl nfsio 60178 307948 0 0 3 0x14280 nfsidl nfsio 12596 92248 0 0 3 0x14280 nfsidl nfsio 42996 208414 0 0 3 0x14280 nfsidl nfsio 18921 328632 0 0 3 0x14280 nfsidl nfsio 62215 497877 0 0 3 0x14280 nfsidl nfsio 94556 272937 0 0 3 0x14280 nfsidl nfsio 8240 517772 0 0 3 0x14280 nfsidl nfsio 23975 23813 0 0 3 0x14280 nfsidl nfsio 81064 461743 42528 0 2 0xc82 syz-executor 69173 299835 42528 0 2 0xc82 syz-executor 9461 224669 42528 0 2 0xc82 syz-executor 42144 294843 42528 0 2 0xc82 syz-executor 38730 269210 42528 0 2 0xc82 syz-executor 87790 417924 42528 0 7 0x3 syz-executor 42528 471768 90615 0 3 0x82 kqread syz-executor 90615 411012 50708 0 3 0x10008a sigsusp ksh 50708 437585 81788 0 3 0x98 kqread sshd-session 81788 406151 2370 0 3 0x92 kqread sshd-session 98664 188435 1 0 3 0x100083 ttyin getty 2370 138525 1 0 3 0x88 kqread sshd 26207 89142 28564 74 3 0x1100092 bpf pflogd 28564 459714 1 0 3 0x80 sbwait pflogd 4255 469304 82428 73 3 0x1100090 kqread syslogd 82428 39473 1 0 3 0x100082 sbwait syslogd 1747 38216 1 0 3 0x100080 kqread resolvd 33557 417792 98571 77 3 0x100092 kqread dhcpleased 55488 139815 98571 77 3 0x100092 kqread dhcpleased 98571 331580 1 0 3 0x80 kqread dhcpleased 68358 63732 0 0 2 0x14200 smr 51069 204627 0 0 2 0x14200 zerothread 48846 270368 0 0 3 0x14200 aiodoned aiodoned 38016 292120 0 0 3 0x14200 syncer update 91860 232449 0 0 3 0x14200 cleaner cleaner 11505 383385 0 0 3 0x14200 reaper reaper 58355 239254 0 0 3 0x14200 pgdaemon pagedaemon 79951 149549 0 0 3 0x14200 bored viomb 24520 104896 0 0 3 0x40014200 acpi0 acpi0 6905 244986 0 0 3 0x40014200 idle1 15169 98016 0 0 3 0x14200 bored softnet1 46902 377081 0 0 3 0x14200 bored softnet0 47575 82282 0 0 3 0x14200 bored systqmp 61543 307619 0 0 3 0x14200 bored systq 28157 97651 0 0 3 0x14200 tmoslp softclockmp 99536 299270 0 0 3 0x40014200 tmoslp softclock 22925 402392 0 0 3 0x40014200 idle0 1 70858 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 24961 (syz-executor) thread 0xffff800033fee7f0 (288548) exclusive rwlock vmmaplk r = 0 (0xfffffd806c23daa0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1902 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #7 recall_trap+0x8 Process 81102 (syz-executor) thread 0xffff800033feed20 (416952) exclusive rrwlock inode r = 0 (0xfffffd805fe6aec8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:687 #6 ktrwriteraw+0x175 sys/kern/kern_ktrace.c:688 #7 ktrsysret+0x192 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] #7 ktrsysret+0x192 sys/kern/kern_ktrace.c:209 #8 syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] #8 syscall+0xa50 sys/arch/amd64/amd64/trap.c:769 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839d3030) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] #1 ktrsysret+0xde sys/kern/kern_ktrace.c:209 #2 syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] #2 syscall+0xa50 sys/arch/amd64/amd64/trap.c:769 #3 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10230 11098K 11327K 166960K 12261 0 pcb 17 16K 17K 166960K 242 0 rtable 245 10K 10K 166960K 501 0 pf 36 18K 22K 166960K 122 0 ifaddr 43 7K 8K 166960K 84 0 ifgroup 55 2K 2K 166960K 123 0 sysctl 3 1K 9K 166960K 13 0 counters 68 36K 38K 166960K 150 0 ioctlops 0 0K 4K 166960K 1611 0 iov 0 0K 18K 166960K 115 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1404 88K 89K 166960K 2127 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 28 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 866 0 sigio 0 0K 0K 166960K 10 0 proc 73 131K 164K 166960K 676 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 91 0 in_multi 99 7K 7K 166960K 140 0 ether_multi 1 0K 0K 166960K 5 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 211 943K 943K 166960K 211 0 exec 0 0K 1K 166960K 534 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 250 159K 178K 166960K 9869 0 UVM aobj 85 3K 3K 166960K 91 0 pinsyscall 43 86K 104K 166960K 2090 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 60 0 NDP 12 0K 2K 166960K 58 0 temp 51 8649K 8770K 166960K 33719 0 kqueue 16 24K 31K 166960K 179 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 84 0 81 1 0 1 1 0 8 0 rtentry 176 147 0 43 6 0 6 6 0 8 0 unpcb 144 622 0 601 7 3 4 4 0 8 2 syncache 336 12 0 12 3 2 1 1 0 8 1 tcpqe 32 3 0 3 3 2 1 1 0 8 1 tcpcb 736 333 0 325 8 6 2 7 0 8 1 arp 136 25 0 5 1 0 1 1 0 8 0 inpcb 328 1278 0 1267 17 15 2 12 0 8 0 nd6 152 32 0 7 1 0 1 1 0 8 0 pkpcb 40 10 0 10 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1192 34 0 34 2 1 1 1 0 8 1 pppxif 1504 1 0 1 1 0 1 1 0 8 1 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 5 0 0 1 0 1 1 0 482 0 pffrnode 88 5 0 0 1 0 1 1 0 8 0 pffrent 40 11 0 6 1 0 1 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 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 64 0 24 1 0 1 1 0 8 0 pfstkey 128 64 0 22 2 0 2 2 0 8 0 pfstate 384 63 0 23 5 0 5 5 0 8 0 pfrule 1344 27 0 20 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 641 0 193 32 3 29 29 0 8 0 art_table 40 642 0 193 5 0 5 5 0 8 0 art_node 32 145 0 53 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 6 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 23 0 13 1 0 1 1 0 8 0 shmpl 112 88 0 6 3 0 3 3 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 3058 0 1539 96 0 96 96 0 8 0 ffsino 296 3058 0 1539 118 0 118 118 0 8 0 nchpl 144 4309 0 3744 64 33 31 64 0 8 8 rtmask 32 12 0 12 2 1 1 1 0 8 1 vnodes 216 3515 0 0 196 0 196 196 0 8 0 namei 1024 14571 0 14571 5 4 1 3 0 8 1 percpumem 16 90 0 41 1 0 1 1 0 8 0 kstatmem 264 78 0 52 4 1 3 3 0 8 1 scsiplug 72 5 0 5 2 1 1 1 0 8 1 scxspl 216 22518 0 22518 6 5 1 4 1 8 1 plimitpl 152 459 0 439 1 0 1 1 0 8 0 sigapl 424 1201 0 1132 8 0 8 8 0 8 0 knotepl 120 512 0 0 16 0 16 16 0 8 0 kqueuepl 224 421 0 407 7 2 5 5 0 8 4 pipepl 344 192 0 165 3 0 3 3 0 8 0 fdescpl 528 1164 0 1132 3 0 3 3 0 8 0 filepl 160 7497 0 7261 22 7 15 18 0 8 4 lockfpl 104 275 0 273 1 0 1 1 0 8 0 lockfspl 48 115 0 113 1 0 1 1 0 8 0 sessionpl 144 33 0 24 1 0 1 1 0 8 0 pgrppl 48 50 0 33 1 0 1 1 0 8 0 ucredpl 104 1195 0 1179 1 0 1 1 0 8 0 zombiepl 144 1386 0 1386 2 1 1 1 0 8 1 processpl 1232 1201 0 1132 6 0 6 6 0 8 0 procpl 664 2517 0 2435 8 0 8 8 0 8 0 sosppl 168 3 0 3 2 1 1 1 0 8 1 sockpl 752 2020 0 1985 26 14 12 17 0 8 7 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 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 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 127 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 182 0 0 11 0 11 11 0 8 0 bufpl 280 9749 0 3612 439 0 439 439 0 8 0 anonpl 32 11388 0 0 92 0 92 92 0 246 0 amapchunkpl 152 33055 0 32529 40 9 31 31 0 158 9 amappl16 200 4961 0 4929 48 32 16 26 0 8 8 amappl15 192 10 0 10 3 3 0 1 0 8 0 amappl14 184 9 0 9 2 2 0 1 0 8 0 amappl13 176 453 0 452 1 0 1 1 0 8 0 amappl12 168 1562 0 1519 3 0 3 3 0 8 0 amappl11 160 7 0 7 1 1 0 1 0 8 0 amappl10 152 50 0 36 1 0 1 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 31 0 28 1 0 1 1 0 8 0 amappl7 128 90 0 88 1 0 1 1 0 8 0 amappl6 120 314 0 299 1 0 1 1 0 8 0 amappl5 112 88 0 78 1 0 1 1 0 8 0 amappl4 104 470 0 441 1 0 1 1 0 8 0 amappl3 96 5636 0 5540 4 1 3 3 0 8 0 amappl2 88 1363 0 1286 2 0 2 2 0 8 0 amappl1 80 14914 0 14321 16 2 14 16 0 8 0 amappl 88 8919 0 8745 5 0 5 5 0 92 0 uvmvnodes 80 3515 0 0 72 0 72 72 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 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 dma512 512 1 0 1 1 0 1 1 0 8 1 dma256 256 9 0 9 3 3 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 7 0 7 2 2 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 90 0 6 2 0 2 2 0 8 0 uaddrrnd 24 1164 0 1132 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1164 0 1132 1 0 1 1 0 8 0 vmmpekpl 168 11715 0 11673 3 0 3 3 0 8 0 vmmpepl 168 85007 0 83034 119 12 107 107 0 357 11 vmsppl 488 1163 0 1132 5 0 5 5 0 8 0 rwobjpl 80 30372 0 25841 99 1 98 98 0 8 0 pdppl 4096 2335 0 2264 109 38 71 83 0 8 0 pvpl 32 19636 0 0 159 0 159 159 0 265 0 pmappl 256 1163 0 1132 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 300 0 58 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83837ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff839d2e28) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839d2e28) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x3d sys/dev/kcov.c:159 ktrsysret(ffff8000ffffd230,5b,0,ffff80002a318c80) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff8000ffffd230,5b,0,ffff80002a318c80) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80002a318d30) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a318d30) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:769 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77364c18bdc0, count: 4 ddb{0}> trace x86_ipi_db(ffffffff83837ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff839d2e28) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839d2e28) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x3d sys/dev/kcov.c:159 ktrsysret(ffff8000ffffd230,5b,0,ffff80002a318c80) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff8000ffffd230,5b,0,ffff80002a318c80) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80002a318d30) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a318d30) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:769 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77364c18bdc0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at ffs2_balloc+0xa0d: movq 0(%rcx,%rax,8),%r14 ffs2_balloc(fffffd805fe6ae28,54d96,50,fffffd80097fb410,1,ffff800033be48f8) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff800033be4980) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd807be278c8,ffff800033be4a30,3,fffffd80097fb410) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800033feed20,fffffd807be278c8,fffffd80097fb410,ffff800033be4b00,ffff800033be4ae0) at ktrwriteraw+0x1be sys/kern/kern_ktrace.c:691 ktrsysret(ffff800033feed20,5b,0,ffff800033be4bd0) at ktrsysret+0x192 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff800033feed20,5b,0,ffff800033be4bd0) at ktrsysret+0x192 sys/kern/kern_ktrace.c:209 syscall(ffff800033be4c80) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff800033be4c80) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:769 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c13010b83c0, count: 8 ddb{1}> trace ffs2_balloc(fffffd805fe6ae28,54d96,50,fffffd80097fb410,1,ffff800033be48f8) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff800033be4980) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd807be278c8,ffff800033be4a30,3,fffffd80097fb410) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800033feed20,fffffd807be278c8,fffffd80097fb410,ffff800033be4b00,ffff800033be4ae0) at ktrwriteraw+0x1be sys/kern/kern_ktrace.c:691 ktrsysret(ffff800033feed20,5b,0,ffff800033be4bd0) at ktrsysret+0x192 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff800033feed20,5b,0,ffff800033be4bd0) at ktrsysret+0x192 sys/kern/kern_ktrace.c:209 syscall(ffff800033be4c80) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff800033be4c80) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:769 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c13010b83c0, count: -7