uvm_fault(0xffffffff83504770, 0xffff800027812180, 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 51861 86189 0 0x2 0 0 syz-executor * 39472 8523 0 0x2 0x1 1K syz-executor ffs2_balloc(fffffd807cc77aa0,f1c64,4e,fffffd807f7d32d8,1,ffff80002a04f6c8) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a04f750) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd80730fa2e8,ffff80002a04f808,3,fffffd807f7d32d8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a03e528,fffffd80730fa2e8,fffffd807f7d32d8,ffff80002a04f8d8,ffff80002a04f8b0) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff80002a03e528,ffffffff83045b37,ffff800001197a98,8) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 dopselect(ffff80002a03e528,35,782fa245e730,0,0,ffff80002a04fcc8,10f72761fe3c6e7e,ffff80002a03e528) at dopselect+0xc58 sys/kern/sys_generic.c:723 sys_pselect(ffff80002a03e528,ffff80002a04fe10,ffff80002a04fd60) at sys_pselect+0x263 sys/kern/sys_generic.c:592 syscall(ffff80002a04fe10) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a04fe10) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x782fa245e6e0, count: 6 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(0xffffffff83504770, 0xffff800027812180, 0, 1) -> d ddb{1}> trace ffs2_balloc(fffffd807cc77aa0,f1c64,4e,fffffd807f7d32d8,1,ffff80002a04f6c8) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a04f750) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd80730fa2e8,ffff80002a04f808,3,fffffd807f7d32d8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a03e528,fffffd80730fa2e8,fffffd807f7d32d8,ffff80002a04f8d8,ffff80002a04f8b0) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff80002a03e528,ffffffff83045b37,ffff800001197a98,8) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 dopselect(ffff80002a03e528,35,782fa245e730,0,0,ffff80002a04fcc8,10f72761fe3c6e7e,ffff80002a03e528) at dopselect+0xc58 sys/kern/sys_generic.c:723 sys_pselect(ffff80002a03e528,ffff80002a04fe10,ffff80002a04fd60) at sys_pselect+0x263 sys/kern/sys_generic.c:592 syscall(ffff80002a04fe10) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a04fe10) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x782fa245e6e0, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a04f670 rbx 0 rdx 0 rcx 0xffff800027812000 rax 0x30 r8 0xffffffffffffffff r9 0xffff80002a04f6c8 r10 0xeae76187b9433523 r11 0xd2647f909249922d r12 0x10 r13 0x1 r14 0xffffffff r15 0xfffffd8074d47150 rip 0xffffffff8147e80e ffs2_balloc+0x9fe cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a04f500 ss 0 ffs2_balloc+0x9fe: movq 0(%rcx,%rax,8),%r14 ddb{1}> show proc PROC (syz-executor) tid=39472 pid=8523 tcnt=1 stat=onproc flags process=2 proc=1 runpri=24, usrpri=82, slppri=24, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a03f1d0,0xffff8000ffff2030 process=0xffff8000ffffa8d8 user=0xffff80002a04a000, vmspace=0xfffffd807ec781b8 estcpu=32, cpticks=1, pctcpu=0.3, user=3, sys=26, intr=1 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 57037 341042 1255 0 2 0 syz-executor 57037 257118 1255 0 2 0x4000000 syz-executor 19915 271045 3837 0 2 0x100002 arp 14018 81153 85093 0 2 0x2 ifconfig 85093 44232 33088 0 3 0x10008a sigsusp sh 3837 171625 6360 0 3 0x10008a sigsusp sh 96706 376845 19506 0 2 0x2 ndp 19506 103790 30393 0 3 0x10008a sigsusp sh 80535 68685 3972 0 2 0 syz-executor 80535 208829 3972 0 2 0x4000000 syz-executor 67851 97516 45743 0 2 0 syz-executor 67851 398128 45743 0 3 0x4000080 msgwait syz-executor 67851 180299 45743 0 3 0x4000080 fsleep syz-executor 66408 359445 81283 0 2 0x10 syz-executor 66408 319844 81283 0 3 0x4000090 kqsel syz-executor 66408 449569 81283 0 3 0x4000090 fsleep syz-executor 33088 515675 8523 0 3 0x82 wait syz-executor 6360 438236 8523 0 3 0x82 wait syz-executor 30393 271891 8523 0 3 0x82 wait syz-executor 45743 419767 8523 0 3 0x82 nanoslp syz-executor 3972 101314 8523 0 3 0x82 nanoslp syz-executor 81283 19715 8523 0 2 0x482 syz-executor 86189 51861 8523 0 7 0x2 syz-executor 1255 275680 8523 0 3 0x82 nanoslp syz-executor 19593 429900 0 0 3 0x14280 nfsidl nfsio 86831 399524 0 0 3 0x14280 nfsidl nfsio 70881 397316 0 0 3 0x14280 nfsidl nfsio 70361 279045 0 0 3 0x14280 nfsidl nfsio 95132 145948 0 0 3 0x14280 nfsidl nfsio 45026 1489 0 0 3 0x14280 nfsidl nfsio 27514 20329 0 0 3 0x14280 nfsidl nfsio 47921 387021 0 0 3 0x14280 nfsidl nfsio 3295 429383 0 0 3 0x14280 nfsidl nfsio 63784 60139 0 0 3 0x14280 nfsidl nfsio 20279 394817 0 0 3 0x14280 nfsidl nfsio 51046 376744 0 0 3 0x14280 nfsidl nfsio 50987 206658 0 0 3 0x14280 nfsidl nfsio 30114 327429 0 0 3 0x14280 nfsidl nfsio 90657 317963 0 0 3 0x14280 nfsidl nfsio 82005 417803 0 0 3 0x14280 nfsidl nfsio 88246 416544 0 0 3 0x14280 nfsidl nfsio 95206 229148 0 0 3 0x14280 nfsidl nfsio 96639 27421 0 0 3 0x14280 nfsidl nfsio 38698 476633 0 0 3 0x14280 nfsidl nfsio 5519 354003 0 0 3 0x14200 bored sosplice * 8523 39472 18223 0 7 0x3 syz-executor 18223 442904 46498 0 3 0x10008a sigsusp ksh 46498 182214 25030 0 3 0x98 kqread sshd-session 25030 44141 89674 0 3 0x92 kqread sshd-session 90801 266580 1 0 3 0x100083 ttyin getty 89674 186621 1 0 3 0x88 kqread sshd 87534 370395 39464 74 3 0x1100092 bpf pflogd 39464 171438 1 0 3 0x80 sbwait pflogd 25220 109908 99781 73 2 0x1100010 syslogd 99781 459154 1 0 3 0x100082 sbwait syslogd 3724 334282 1 0 3 0x100080 kqread resolvd 70699 423625 20533 77 3 0x100092 kqread dhcpleased 73419 78822 20533 77 3 0x100092 kqread dhcpleased 20533 371937 1 0 3 0x80 kqread dhcpleased 53339 333526 0 0 3 0x14200 bored smr 76674 254382 0 0 2 0x14200 zerothread 46549 50976 0 0 3 0x14200 aiodoned aiodoned 91946 262514 0 0 3 0x14200 syncer update 71361 514962 0 0 3 0x14200 cleaner cleaner 42319 501581 0 0 3 0x14200 reaper reaper 91058 232898 0 0 3 0x14200 pgdaemon pagedaemon 95631 502650 0 0 3 0x14200 bored viomb 84092 347367 0 0 3 0x40014200 acpi0 acpi0 8913 56282 0 0 3 0x40014200 idle1 71216 15152 0 0 3 0x14200 bored softnet3 9477 106274 0 0 3 0x14200 bored softnet2 54084 81251 0 0 3 0x14200 bored softnet1 75692 430015 0 0 3 0x14200 bored softnet0 56009 217707 0 0 3 0x14200 bored systqmp 64856 106211 0 0 3 0x14200 bored systq 68094 355282 0 0 3 0x14200 tmoslp softclockmp 4198 494844 0 0 3 0x40014200 tmoslp softclock 42625 200247 0 0 3 0x40014200 idle0 1 438476 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 8523 (syz-executor) thread 0xffff80002a03e528 (39472) exclusive rrwlock inode r = 0 (0xfffffd807cc77b38) #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 ktrstruct+0x19a sys/kern/kern_ktrace.c:308 #8 dopselect+0xc58 sys/kern/sys_generic.c:723 #9 sys_pselect+0x263 sys/kern/sys_generic.c:592 #10 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #10 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83553178) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 ktrstruct+0xe2 sys/kern/kern_ktrace.c:307 #2 dopselect+0xc58 sys/kern/sys_generic.c:723 #3 sys_pselect+0x263 sys/kern/sys_generic.c:592 #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 Process 25220 (syslogd) thread 0xffff8000ffffd960 (109908) exclusive rrwlock inode r = 0 (0xfffffd806e4d32c0) #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 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2926 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10197 10093K 10682K 166960K 11626 0 pcb 18 14K 15K 166960K 106 0 rtable 171 5K 7K 166960K 1047 0 pf 34 17K 25K 166960K 110 0 ifaddr 36 6K 7K 166960K 141 0 ifgroup 55 2K 2K 166960K 151 0 sysctl 2 0K 0K 166960K 2 0 counters 64 36K 36K 166960K 112 0 ioctlops 0 0K 4K 166960K 1522 0 iov 0 0K 16K 166960K 26 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1371 86K 86K 166960K 1826 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 20 73K 93K 166960K 710 0 sigio 0 0K 0K 166960K 4 0 proc 72 91K 128K 166960K 1201 0 subproc 104 6K 6K 166960K 416 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 26 0 in_multi 74 5K 7K 166960K 359 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 769 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 227 72K 91K 166960K 6686 0 UVM aobj 10 2K 2K 166960K 11 0 pinsyscall 47 94K 105K 166960K 2406 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 19 0 NDP 20 1K 2K 166960K 96 0 temp 48 6813K 6877K 166960K 22231 0 kqueue 13 20K 28K 166960K 61 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 91 0 87 1 0 1 1 0 8 0 rtentry 112 363 0 286 4 0 4 4 0 8 1 unpcb 144 222 0 205 5 4 1 4 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 68 0 63 2 1 1 2 0 8 0 arp 120 65 0 50 1 0 1 1 0 8 0 inpcb 336 518 0 508 13 11 2 7 0 8 0 nd6 136 91 0 73 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 32 0 24 1 0 1 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 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 pfstitem 24 61 0 27 1 0 1 1 0 8 0 pfstkey 128 61 0 27 2 0 2 2 0 8 0 pfstate 376 61 0 27 4 0 4 4 0 8 0 pfrule 1344 23 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 1475 0 1119 29 1 28 29 0 8 5 art_table 32 1476 0 1119 4 0 4 4 0 8 0 art_node 16 362 0 293 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 5 1 0 1 1 0 8 0 semapl 112 5 0 1 1 0 1 1 0 8 0 shmpl 112 8 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1983 0 433 97 0 97 97 0 8 0 ffsino 272 1983 0 433 104 0 104 104 0 8 0 nchpl 144 2525 0 817 64 0 64 64 0 8 0 uvmvnodes 80 2493 0 0 51 0 51 51 0 8 0 vnodes 216 2493 0 0 139 0 139 139 0 8 0 namei 1024 10203 0 10203 4 3 1 1 0 8 1 percpumem 16 70 0 24 1 0 1 1 0 8 0 kstatmem 264 72 0 48 2 0 2 2 0 8 0 scxspl 216 14434 0 14434 10 9 1 8 1 8 1 plimitpl 152 159 0 142 1 0 1 1 0 8 0 sigapl 424 991 0 918 9 0 9 9 0 8 0 futexpl 64 3567 0 3565 2 1 1 1 0 8 0 knotepl 120 422 0 0 13 0 13 13 0 8 0 kqueuepl 216 96 0 86 1 0 1 1 0 8 0 pipepl 320 190 0 163 3 0 3 3 0 8 0 fdescpl 496 951 0 917 7 2 5 5 0 8 0 filepl 152 3835 0 3585 18 7 11 14 0 8 1 lockfpl 104 176 0 174 2 1 1 2 0 8 0 lockfspl 48 42 0 40 1 0 1 1 0 8 0 sessionpl 144 46 0 37 1 0 1 1 0 8 0 pgrppl 48 80 0 63 1 0 1 1 0 8 0 ucredpl 104 363 0 349 1 0 1 1 0 8 0 zombiepl 144 918 0 918 2 1 1 1 0 8 1 processpl 1160 991 0 918 6 0 6 6 0 8 0 procpl 648 1386 0 1307 8 0 8 8 0 8 0 sockpl 664 836 0 805 14 11 3 10 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 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 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 246 0 0 31 0 31 31 0 8 0 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 292 0 0 17 0 17 17 0 8 0 bufpl 280 6385 0 211 442 0 442 442 0 8 0 anonpl 24 178106 0 174614 70 20 50 50 0 185 24 amapchunkpl 152 20696 0 20253 41 11 30 32 0 158 10 amappl16 200 3296 0 3289 8 6 2 5 0 8 0 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 163 0 149 1 0 1 1 0 8 0 amappl13 176 15 0 15 1 1 0 1 0 8 0 amappl12 168 1975 0 1940 4 2 2 3 0 8 0 amappl11 160 58 0 44 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 153 0 153 2 2 0 1 0 8 0 amappl8 136 25 0 23 1 0 1 1 0 8 0 amappl7 128 151 0 137 1 0 1 1 0 8 0 amappl6 120 458 0 454 1 0 1 1 0 8 0 amappl5 112 253 0 239 1 0 1 1 0 8 0 amappl4 104 437 0 418 1 0 1 1 0 8 0 amappl3 96 3951 0 3848 5 1 4 4 0 8 1 amappl2 88 999 0 923 2 0 2 2 0 8 0 amappl1 80 10643 0 10034 14 1 13 14 0 8 0 amappl 88 6133 0 5974 6 1 5 5 0 92 1 dma16384 16384 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 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 10 0 1 1 0 1 1 0 8 0 uaddrrnd 24 951 0 917 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 951 0 917 1 0 1 1 0 8 0 vmmpekpl 168 8921 0 8861 5 1 4 4 0 8 0 vmmpepl 168 64860 0 63018 91 8 83 87 0 357 1 vmsppl 440 950 0 917 6 2 4 5 0 8 0 rwobjpl 56 23591 0 20111 50 0 50 50 0 8 0 pdppl 4096 1909 0 1834 135 58 77 85 0 8 2 pvpl 32 28425 0 0 229 0 229 229 0 265 0 pmappl 248 950 0 917 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 445 0 78 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83466ff0) 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(ffffffff83552f70) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83552f70) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83552f70) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83552f70) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a0fe180) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0fe180) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7072ebf0c7e0, count: 5 ddb{0}> trace x86_ipi_db(ffffffff83466ff0) 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(ffffffff83552f70) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83552f70) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83552f70) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83552f70) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a0fe180) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0fe180) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7072ebf0c7e0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at ffs2_balloc+0x9fe: movq 0(%rcx,%rax,8),%r14 ffs2_balloc(fffffd807cc77aa0,f1c64,4e,fffffd807f7d32d8,1,ffff80002a04f6c8) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a04f750) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd80730fa2e8,ffff80002a04f808,3,fffffd807f7d32d8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a03e528,fffffd80730fa2e8,fffffd807f7d32d8,ffff80002a04f8d8,ffff80002a04f8b0) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff80002a03e528,ffffffff83045b37,ffff800001197a98,8) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 dopselect(ffff80002a03e528,35,782fa245e730,0,0,ffff80002a04fcc8,10f72761fe3c6e7e,ffff80002a03e528) at dopselect+0xc58 sys/kern/sys_generic.c:723 sys_pselect(ffff80002a03e528,ffff80002a04fe10,ffff80002a04fd60) at sys_pselect+0x263 sys/kern/sys_generic.c:592 syscall(ffff80002a04fe10) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a04fe10) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x782fa245e6e0, count: 6 ddb{1}> trace ffs2_balloc(fffffd807cc77aa0,f1c64,4e,fffffd807f7d32d8,1,ffff80002a04f6c8) at ffs2_balloc+0x9fe sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a04f750) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd80730fa2e8,ffff80002a04f808,3,fffffd807f7d32d8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a03e528,fffffd80730fa2e8,fffffd807f7d32d8,ffff80002a04f8d8,ffff80002a04f8b0) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff80002a03e528,ffffffff83045b37,ffff800001197a98,8) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 dopselect(ffff80002a03e528,35,782fa245e730,0,0,ffff80002a04fcc8,10f72761fe3c6e7e,ffff80002a03e528) at dopselect+0xc58 sys/kern/sys_generic.c:723 sys_pselect(ffff80002a03e528,ffff80002a04fe10,ffff80002a04fd60) at sys_pselect+0x263 sys/kern/sys_generic.c:592 syscall(ffff80002a04fe10) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a04fe10) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x782fa245e6e0, count: -9