uvm_fault(0xffffffff836190a8, 0xffff800018b52060, 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 58764 85839 0 0 0x4000000 1 syz-executor * 22520 52245 73 0x1100010 0x1 0K syslogd ffs2_balloc(fffffd8068997448,61dac,60,fffffd807f7d3068,1,ffff80002a06a768) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a06a7f0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd8077683a80,ffff80002a06a8a8,3,fffffd807f7d3068) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffffccb8,fffffd8077683a80,fffffd807f7d3068,ffff80002a06a970,ffff80002a06a950) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsyscall(ffff8000ffffccb8,79,18,ffff80002a06ab00) at ktrsyscall+0x31d sys/kern/kern_ktrace.c:182 syscall(ffff80002a06ab00) at syscall+0x2eb mi_syscall sys/sys/syscall_mi.h:157 [inline] syscall(ffff80002a06ab00) at syscall+0x2eb sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c7caf3b33e0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xffffffff836190a8, 0xffff800018b52060, 0, 1) -> d ddb{0}> trace ffs2_balloc(fffffd8068997448,61dac,60,fffffd807f7d3068,1,ffff80002a06a768) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a06a7f0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd8077683a80,ffff80002a06a8a8,3,fffffd807f7d3068) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffffccb8,fffffd8077683a80,fffffd807f7d3068,ffff80002a06a970,ffff80002a06a950) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsyscall(ffff8000ffffccb8,79,18,ffff80002a06ab00) at ktrsyscall+0x31d sys/kern/kern_ktrace.c:182 syscall(ffff80002a06ab00) at syscall+0x2eb mi_syscall sys/sys/syscall_mi.h:157 [inline] syscall(ffff80002a06ab00) at syscall+0x2eb sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c7caf3b33e0, count: -7 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a06a710 rbx 0 rdx 0 rcx 0xffff800018b52000 rax 0xc r8 0xffffffffffffffff r9 0xffff80002a06a768 r10 0xfa1290b8273b1d96 r11 0xad63389dd5dc0b44 r12 0x10 r13 0x1 r14 0xffffffff r15 0xfffffd8071a198c0 rip 0xffffffff8290659e ffs2_balloc+0x9fe cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a06a5a0 ss 0x10 ffs2_balloc+0x9fe: movq 0(%rcx,%rax,8),%r14 ddb{0}> show proc PROC (syslogd) tid=22520 pid=52245 tcnt=1 stat=onproc flags process=1100010 proc=1 runpri=17, usrpri=55, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffc7a8,0xffff8000ffffd6e8 process=0xffff8000ffff8498 user=0xffff80002a065000, vmspace=0xfffffd806ecb6008 estcpu=5, cpticks=7, pctcpu=5.81, user=8, sys=3163, intr=4 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 81611 416861 65664 0 2 0 syz-executor 81611 67706 65664 0 3 0x4000080 fsleep syz-executor 81611 231989 65664 0 3 0x4000080 fsleep syz-executor 15328 149116 58196 0 2 0 syz-executor 85839 429530 7201 0 2 0 syz-executor 85839 58764 7201 0 7 0x4000000 syz-executor 141 4863 54521 0 2 0 syz-executor 141 81588 54521 0 2 0x4000000 syz-executor 69101 31772 63530 0 3 0x80 nanoslp syz-executor 69101 297539 63530 0 3 0x4000080 kqsel syz-executor 58196 93896 1639 0 2 0x482 syz-executor 7201 259613 1639 0 2 0x482 syz-executor 88981 368182 1639 0 2 0x2 syz-executor 63530 133663 1639 0 3 0x82 nanoslp syz-executor 54521 272651 1639 0 3 0x82 nanoslp syz-executor 50777 450596 1639 0 3 0x82 piperd syz-executor 65664 359397 1639 0 2 0x482 syz-executor 34347 45215 1639 0 2 0x2 syz-executor 16564 273921 0 0 3 0x14200 acct acct 27401 356315 1 0 3 0x100083 ttyin getty 9026 407397 0 0 3 0x14280 nfsidl nfsio 69378 256585 0 0 3 0x14280 nfsidl nfsio 72372 187268 0 0 3 0x14280 nfsidl nfsio 85655 102203 0 0 3 0x14280 nfsidl nfsio 88457 169500 0 0 3 0x14280 nfsidl nfsio 24156 131117 0 0 3 0x14280 nfsidl nfsio 3340 288649 0 0 3 0x14280 nfsidl nfsio 39211 171200 0 0 3 0x14280 nfsidl nfsio 28805 105074 0 0 3 0x14280 nfsidl nfsio 86738 475396 0 0 3 0x14280 nfsidl nfsio 98307 239679 0 0 3 0x14280 nfsidl nfsio 47068 192627 0 0 3 0x14280 nfsidl nfsio 94791 61974 0 0 3 0x14280 nfsidl nfsio 89625 59167 0 0 3 0x14280 nfsidl nfsio 28191 127099 0 0 3 0x14280 nfsidl nfsio 94498 400698 0 0 3 0x14280 nfsidl nfsio 83870 254717 0 0 3 0x14280 nfsidl nfsio 2984 408658 0 0 3 0x14280 nfsidl nfsio 98248 409489 0 0 3 0x14280 nfsidl nfsio 76410 201019 0 0 3 0x14280 nfsidl nfsio 53107 179986 0 0 3 0x14200 bored sosplice 1639 249738 89263 0 2 0x2 syz-executor 89263 459977 47302 0 3 0x10008a sigsusp ksh 47302 497253 12484 0 3 0x98 kqread sshd-session 12484 42859 14505 0 3 0x92 kqread sshd-session 14505 186078 1 0 3 0x88 kqread sshd 59412 130442 79256 74 3 0x1100092 bpf pflogd 79256 244917 1 0 3 0x80 sbwait pflogd *52245 22520 28764 73 7 0x1100011 syslogd 28764 33949 1 0 3 0x100082 sbwait syslogd 66763 97076 1 0 3 0x100080 kqread resolvd 62289 346145 74196 77 3 0x100092 kqread dhcpleased 46694 488215 74196 77 3 0x100092 kqread dhcpleased 74196 1492 1 0 3 0x80 kqread dhcpleased 65104 246754 0 0 3 0x14200 bored smr 5537 209849 0 0 2 0x14200 zerothread 47301 328502 0 0 3 0x14200 aiodoned aiodoned 72092 516974 0 0 3 0x14200 syncer update 83903 137637 0 0 3 0x14200 cleaner cleaner 47906 412468 0 0 3 0x14200 reaper reaper 47672 111306 0 0 3 0x14200 pgdaemon pagedaemon 50683 391532 0 0 3 0x14200 bored viomb 53147 15536 0 0 3 0x40014200 acpi0 acpi0 8004 107783 0 0 3 0x40014200 idle1 63375 150018 0 0 3 0x14200 bored softnet3 74754 31228 0 0 3 0x14200 bored softnet2 7960 80351 0 0 3 0x14200 bored softnet1 94620 46847 0 0 2 0x14200 softnet0 64669 381642 0 0 3 0x14200 bored systqmp 44479 347472 0 0 3 0x14200 bored systq 74620 89982 0 0 3 0x14200 tmoslp softclockmp 36612 373424 0 0 3 0x40014200 tmoslp softclock 63746 110747 0 0 3 0x40014200 idle0 1 83985 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 88981 (syz-executor) thread 0xffff80002a041bf0 (368182) exclusive rrwlock inode r = 0 (0xfffffd8068997920) #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 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:169 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3099 #10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8076534098) #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 domkdirat+0x8b sys/kern/vfs_syscalls.c:3084 #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 Process 34347 (syz-executor) thread 0xffff80003338c7d8 (45215) exclusive rrwlock inode r = 0 (0xfffffd8068997b40) #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_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline] #5 vn_closefile+0x111 sys/kern/vfs_vnops.c:609 #6 fdrop+0x126 sys/kern/kern_descrip.c:1274 #7 closef+0x192 sys/kern/kern_descrip.c:1258 #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 Process 52245 (syslogd) thread 0xffff8000ffffccb8 (22520) exclusive rrwlock inode r = 0 (0xfffffd80689974e0) #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 ktrwriteraw+0x172 sys/kern/kern_ktrace.c:679 #7 ktrsyscall+0x31d sys/kern/kern_ktrace.c:182 #8 syscall+0x2eb mi_syscall sys/sys/syscall_mi.h:157 [inline] #8 syscall+0x2eb sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8362f4e0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 syscall+0x2cc mi_syscall sys/sys/syscall_mi.h:156 [inline] #1 syscall+0x2cc sys/arch/amd64/amd64/trap.c:577 #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10209 10099K 10548K 166960K 12619 0 pcb 17 14K 14K 166960K 215 0 rtable 245 8K 9K 166960K 1808 0 pf 40 18K 26K 166960K 179 0 ifaddr 46 8K 8K 166960K 245 0 ifgroup 64 2K 3K 166960K 265 0 sysctl 3 0K 0K 166960K 5 0 counters 68 36K 37K 166960K 174 0 ioctlops 0 0K 4K 166960K 1696 0 iov 0 0K 16K 166960K 67 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1440 91K 91K 166960K 3004 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 97 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 15 53K 93K 166960K 1701 0 sigio 0 0K 0K 166960K 23 0 proc 72 91K 140K 166960K 1862 0 subproc 104 6K 7K 166960K 690 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 136 0 in_multi 99 7K 7K 166960K 629 0 ether_multi 1 0K 0K 166960K 9 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 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 1029 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 218 72K 92K 166960K 15021 0 UVM aobj 127 5K 5K 166960K 130 0 pinsyscall 40 80K 110K 166960K 3950 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 42 0 NDP 22 1K 1K 166960K 172 0 temp 78 6824K 6889K 166960K 43260 0 kqueue 13 20K 28K 166960K 163 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 120 205 0 201 1 0 1 1 0 8 0 rtentry 112 629 0 518 5 1 4 4 0 8 0 unpcb 144 1163 0 1146 11 10 1 6 0 8 0 syncache 336 9 0 9 5 5 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 596 0 591 21 20 1 11 0 8 0 arp 120 115 0 96 1 0 1 1 0 8 0 inpcb 336 1821 0 1810 42 40 2 15 0 8 0 nd6 136 162 0 138 1 0 1 1 0 8 0 pkpcb 40 13 0 13 8 7 1 1 0 8 1 kcovpl 48 53 0 45 1 0 1 1 0 8 0 ppxss 1168 7 0 7 5 5 0 1 0 8 0 pffrag 232 5 0 4 2 1 1 1 0 482 0 pffrnode 88 5 0 4 2 1 1 1 0 8 0 pffrent 40 11 0 10 2 1 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 1 0 0 1 0 1 1 0 8 0 pfstitem 24 124 0 94 1 0 1 1 0 8 0 pfstkey 128 124 0 94 2 0 2 2 0 8 0 pfstate 376 124 0 94 4 0 4 4 0 8 0 pfrule 1344 33 0 25 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 2469 0 2004 38 8 30 30 0 8 0 art_table 32 2471 0 2004 4 0 4 4 0 8 0 art_node 16 627 0 528 1 0 1 1 0 8 0 sysvmsgpl 40 37 0 9 1 0 1 1 0 8 0 semapl 112 94 0 84 1 0 1 1 0 8 0 shmpl 112 127 0 3 4 0 4 4 0 8 0 dirhash 1024 32 0 15 3 0 3 3 0 8 0 dino2pl 256 3399 0 1809 100 0 100 100 0 8 0 ffsino 272 3399 0 1809 107 0 107 107 0 8 0 nchpl 144 4853 0 3102 66 0 66 66 0 8 0 uvmvnodes 80 4722 0 0 97 0 97 97 0 8 0 vnodes 216 4722 0 0 263 0 263 263 0 8 0 namei 1024 21327 0 21326 5 4 1 2 0 8 0 percpumem 16 101 0 53 1 0 1 1 0 8 0 kstatmem 264 134 0 106 3 0 3 3 0 8 1 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 216 33828 0 33828 12 11 1 8 1 8 1 plimitpl 152 281 0 263 1 0 1 1 0 8 0 sigapl 424 1935 0 1866 9 0 9 9 0 8 0 futexpl 64 14063 0 14061 5 4 1 1 0 8 0 knotepl 120 576 0 0 17 1 16 17 0 8 0 kqueuepl 216 268 0 258 2 1 1 2 0 8 0 pipepl 320 386 0 357 9 6 3 6 0 8 0 fdescpl 496 1895 0 1866 5 0 5 5 0 8 0 filepl 152 11236 0 10985 41 30 11 18 0 8 1 lockfpl 104 537 0 535 2 1 1 2 0 8 0 lockfspl 48 150 0 148 1 0 1 1 0 8 0 sessionpl 144 71 0 62 1 0 1 1 0 8 0 pgrppl 48 132 0 115 1 0 1 1 0 8 0 ucredpl 104 1652 0 1639 1 0 1 1 0 8 0 zombiepl 144 2225 0 2225 1 0 1 1 0 8 1 processpl 1160 1935 0 1866 7 1 6 6 0 8 0 procpl 648 3557 0 3483 9 1 8 8 0 8 0 srpgc 96 12 0 12 3 3 0 1 0 8 0 sosppl 168 5 0 5 3 3 0 1 0 8 0 sockpl 664 3211 0 3179 53 49 4 17 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 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 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 267 0 0 33 1 32 33 0 8 0 mtagpl 96 97 0 0 2 0 2 2 0 8 0 mbufpl 256 1051 0 0 61 0 61 61 0 8 0 bufpl 280 9576 0 1988 543 0 543 543 0 8 0 anonpl 24 286653 0 282490 127 71 56 85 0 185 11 amapchunkpl 152 48537 0 48057 55 23 32 44 0 158 11 amappl16 200 4764 0 4747 63 55 8 24 0 8 6 amappl15 192 38 0 38 1 1 0 1 0 8 0 amappl14 184 212 0 200 1 0 1 1 0 8 0 amappl13 176 26 0 25 1 0 1 1 0 8 0 amappl12 168 3259 0 3230 4 2 2 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 217 0 217 2 2 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 200 0 188 1 0 1 1 0 8 0 amappl6 120 610 0 609 1 0 1 1 0 8 0 amappl5 112 325 0 313 1 0 1 1 0 8 0 amappl4 104 518 0 499 1 0 1 1 0 8 0 amappl3 96 9167 0 9070 4 1 3 4 0 8 0 amappl2 88 1321 0 1253 2 0 2 2 0 8 0 amappl1 80 15561 0 15005 16 2 14 15 0 8 0 amappl 88 14210 0 14055 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 129 0 3 3 0 3 3 0 8 0 uaddrrnd 24 1895 0 1866 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1895 0 1866 1 0 1 1 0 8 0 vmmpekpl 168 16632 0 16585 3 0 3 3 0 8 0 vmmpepl 168 120940 0 119221 133 42 91 103 0 357 9 vmsppl 440 1894 0 1866 6 2 4 5 0 8 0 rwobjpl 56 39555 0 33814 88 6 82 82 0 8 0 pdppl 4096 3797 0 3732 161 86 75 87 0 8 10 pvpl 32 40393 0 0 326 0 326 326 0 265 0 pmappl 248 1894 0 1866 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 592 0 173 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ffs2_balloc(fffffd8068997448,61dac,60,fffffd807f7d3068,1,ffff80002a06a768) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a06a7f0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd8077683a80,ffff80002a06a8a8,3,fffffd807f7d3068) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffffccb8,fffffd8077683a80,fffffd807f7d3068,ffff80002a06a970,ffff80002a06a950) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrsyscall(ffff8000ffffccb8,79,18,ffff80002a06ab00) at ktrsyscall+0x31d sys/kern/kern_ktrace.c:182 syscall(ffff80002a06ab00) at syscall+0x2eb mi_syscall sys/sys/syscall_mi.h:157 [inline] syscall(ffff80002a06ab00) at syscall+0x2eb sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c7caf3b33e0, count: -7 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 __mp_lock(ffffffff8362f2d8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8362f2d8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a0ce4d0) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0ce4d0) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1eadae6e870, count: 9 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 __mp_lock(ffffffff8362f2d8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8362f2d8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a0ce4d0) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0ce4d0) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1eadae6e870, count: -6