uvm_fault(0xfffffd806aa25020, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81f340d8 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff800039fcb3f0 gsbase 0xffff8000299bdff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81f340d8 Starting stack trace... panic(ffffffff83485042) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff800039fcb340) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003b7d22c0,fffffd8067f85cd0,ffff800039fcb500) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771 sys_futimens(ffff80003b7d22c0,ffff800039fcb650,ffff800039fcb5a0) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2847 syscall(ffff800039fcb650) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039fcb650) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x690133b9ba0, count: 250 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 83 1534924208 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 62655 2933 0 0 0 1 syz-executor 58255 18542 0 0x2 0 0 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0x7dd227542300, count: 14 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(0xfffffd806aa25020, 0x98, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7dd227542300, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003a7d10b0 rbx 0 rdx 0 rcx 0xffff80003b7d3cb0 rax 0x3b r8 0xffff80003a7d0fe0 r9 0x1 r10 0x931f160f8bfb4f2 r11 0xd106fe473a0c0abb r12 0 r13 0 r14 0xffff80003b7d3cb0 r15 0 rip 0xffffffff8260f3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003a7d1030 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=62655 pid=2933 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003b7d3250,0xffff80003b7d2fc8 process=0xffff80003b7d4e90 user=0xffff80003a7cc000, vmspace=0xfffffd806aa25020 estcpu=36, cpticks=3, pctcpu=0.0, user=2, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 22045 493728 24984 0 2 0 syz-executor * 2933 62655 47742 0 7 0 syz-executor 2933 517856 47742 0 3 0x4000000 sbar syz-executor 20917 65169 79669 0 2 0 syz-executor 20917 218104 79669 0 2 0x4000000 syz-executor 65340 451639 80310 0 3 0x80 nanoslp syz-executor 65340 73552 80310 0 3 0x4000080 kqread syz-executor 65340 441605 80310 0 3 0x4000080 fsleep syz-executor 3176 44965 11611 0 3 0x80 nanoslp syz-executor 3176 385742 11611 0 3 0x4000080 ttyout syz-executor 3176 158778 11611 0 3 0x4000080 ttyout syz-executor 47742 212366 74869 0 3 0x82 nanoslp syz-executor 79669 509959 74869 0 3 0x82 nanoslp syz-executor 24984 101219 74869 0 3 0x82 nanoslp syz-executor 93109 429870 74869 0 3 0x82 nanoslp syz-executor 11611 64786 74869 0 3 0x82 nanoslp syz-executor 18542 58255 74869 0 7 0x2 syz-executor 73310 294433 74869 0 3 0x2 getblk syz-executor 80310 257534 74869 0 3 0x82 nanoslp syz-executor 74869 466554 32853 0 3 0x82 kqread syz-executor 32853 462900 91521 0 3 0x10008a sigsusp ksh 91521 115527 27660 0 3 0x98 kqread sshd-session 27660 480156 79637 0 3 0x92 kqread sshd-session 75375 99165 1 0 3 0x100083 ttyin getty 79637 127420 1 0 3 0x88 kqread sshd 48126 102003 94345 74 3 0x1100092 bpf pflogd 94345 158360 1 0 3 0x80 sbwait pflogd 37115 162093 87365 73 3 0x1100090 kqread syslogd 87365 48508 1 0 3 0x100082 sbwait syslogd 21527 110321 1 0 3 0x100080 kqread resolvd 57948 216106 1790 77 3 0x100092 kqread dhcpleased 4584 34571 1790 77 3 0x100092 kqread dhcpleased 1790 482195 1 0 3 0x80 kqread dhcpleased 18175 86614 0 0 3 0x14200 pause smr 57922 223030 0 0 2 0x14200 zerothread 86244 344063 0 0 3 0x14200 aiodoned aiodoned 99238 128116 0 0 3 0x14200 syncer update 38007 316640 0 0 3 0x14200 cleaner cleaner 20581 374390 0 0 2 0x14200 reaper 99373 271331 0 0 3 0x14200 pgdaemon pagedaemon 87644 68996 0 0 3 0x14200 bored viomb 5090 5389 0 0 3 0x40014200 acpi0 acpi0 59595 342310 0 0 3 0x40014200 idle1 22921 33442 0 0 3 0x14200 bored softnet1 37546 254821 0 0 3 0x14200 bored softnet0 57572 137712 0 0 3 0x14200 smrbar systqmp 43006 22033 0 0 3 0x14200 bored systq 72421 109004 0 0 3 0x14200 tmoslp softclockmp 50547 508921 0 0 3 0x40014200 tmoslp softclock 65586 347857 0 0 3 0x40014200 idle0 1 467839 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806aa4fa10) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_do_remove+0xa9 rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_do_remove+0xa9 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #2 pmap_do_remove+0xa9 sys/arch/amd64/amd64/pmap.c:1827 #3 uvm_unmap_kill_entry_withlock+0x269 sys/uvm/uvm_map.c:1869 #4 uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] #4 uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 #5 exit1+0x6fc sys/kern/kern_exit.c:260 #6 proc_suspend_check_locked+0x31d sys/kern/kern_sig.c:2235 #7 userret+0x8c proc_suspend_check sys/kern/kern_sig.c:-1 [inline] #7 userret+0x8c sys/kern/kern_sig.c:2194 #8 intr_user_exit+0x3c Process 2933 (syz-executor) thread 0xffff80003b7d22c0 (517856) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839be540) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 Process 18542 (syz-executor) thread 0xffff80002a242a70 (58255) exclusive rrwlock inode r = 0 (0xfffffd806c4fcc50) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d546b18) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 73310 (syz-executor) thread 0xffff80002a242d08 (294433) exclusive rrwlock inode r = 0 (0xfffffd806e5c40f0) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d5468c8) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 57572 (systqmp) thread 0xffff8000ffffe298 (137712) shared rwlock systqmp r = 0 (0xffffffff83862888) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11069 12240K 12535K 166960K 12230 0 pcb 17 12K 12K 166960K 32 0 rtable 215 6K 7K 166960K 357 0 pf 33 17K 18K 166960K 46 0 ifaddr 39 6K 7K 166960K 45 0 ifgroup 51 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 37K 166960K 70 0 ioctlops 0 0K 4K 166960K 1491 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1295 82K 82K 166960K 1401 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 93K 166960K 176 0 sigio 0 0K 0K 166960K 1 0 proc 72 115K 180K 166960K 557 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 5 0 in_multi 88 6K 7K 166960K 100 0 ether_multi 1 0K 0K 166960K 1 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 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 380 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 213 166K 175K 166960K 3543 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 40 80K 106K 166960K 1313 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 11 0K 1K 166960K 28 0 temp 36 9070K 9134K 166960K 4229 0 kqueue 16 24K 28K 166960K 32 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 35 0 32 1 0 1 1 0 8 0 rtentry 176 114 0 15 6 0 6 6 0 8 0 unpcb 144 54 0 37 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 22 0 18 1 0 1 1 0 8 0 arp 136 19 0 3 1 0 1 1 0 8 0 inpcb 328 101 0 94 2 0 2 2 0 8 1 nd6 152 24 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pffrag 232 5 0 1 1 0 1 1 0 482 0 pffrnode 88 5 0 1 1 0 1 1 0 8 0 pffrent 40 6 0 2 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 pfsrclim 320 2 0 1 1 0 1 1 0 8 0 pfstitem 24 25 0 0 1 0 1 1 0 8 0 pfstkey 128 25 0 0 1 0 1 1 0 8 0 pfstate 448 25 0 0 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 457 0 0 29 0 29 29 0 8 0 art_table 40 458 0 0 5 0 5 5 0 8 0 art_node 32 114 0 14 1 0 1 1 0 8 0 semapl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1636 0 171 92 0 92 92 0 8 0 ffsino 296 1636 0 171 113 0 113 113 0 8 0 nchpl 144 1883 0 191 64 0 64 64 0 8 0 vnodes 216 1746 0 0 97 0 97 97 0 8 0 namei 1024 5668 0 5668 1 0 1 1 0 8 1 percpumem 16 50 0 1 1 0 1 1 0 8 0 kstatmem 264 27 0 2 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 6764 0 6764 9 1 8 8 1 8 8 plimitpl 152 34 0 16 1 0 1 1 0 8 0 sigapl 424 488 0 442 7 0 7 7 0 8 1 knotepl 120 295 0 0 9 0 9 9 0 8 0 kqueuepl 224 31 0 20 1 0 1 1 0 8 0 pipepl 344 123 0 96 3 0 3 3 0 8 0 fdescpl 528 472 0 443 3 0 3 3 0 8 0 filepl 160 1708 0 1491 10 0 10 10 0 8 0 lockfpl 104 27 0 25 1 0 1 1 0 8 0 lockfspl 48 15 0 13 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 37 0 20 1 0 1 1 0 8 0 ucredpl 104 106 0 92 1 0 1 1 0 8 0 zombiepl 144 443 0 442 1 0 1 1 0 8 0 processpl 1232 488 0 442 5 0 5 5 0 8 0 procpl 664 558 0 506 6 0 6 6 0 8 0 sosppl 176 3 0 3 1 0 1 1 0 8 1 sockpl 752 191 0 164 5 0 5 5 0 8 2 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 115 0 0 15 0 15 15 0 8 0 mcl2k 2048 27 0 0 4 0 4 4 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 183 0 0 12 0 12 12 0 8 0 bufpl 280 2395 0 105 164 0 164 164 0 8 0 anonpl 32 3905 0 0 32 0 32 32 0 246 0 amapchunkpl 152 10013 0 9607 28 0 28 28 0 158 9 amappl16 200 1972 0 1956 5 1 4 5 0 8 2 amappl15 192 14 0 14 1 1 0 1 0 8 0 amappl14 184 428 0 427 1 0 1 1 0 8 0 amappl13 176 117 0 105 1 0 1 1 0 8 0 amappl12 168 727 0 700 2 0 2 2 0 8 0 amappl11 160 2 0 2 1 1 0 1 0 8 0 amappl10 152 61 0 47 1 0 1 1 0 8 0 amappl9 144 262 0 262 1 1 0 1 0 8 0 amappl8 136 101 0 99 1 0 1 1 0 8 0 amappl7 128 147 0 134 1 0 1 1 0 8 0 amappl6 120 164 0 163 1 0 1 1 0 8 0 amappl5 112 89 0 79 1 0 1 1 0 8 0 amappl4 104 285 0 266 1 0 1 1 0 8 0 amappl3 96 1700 0 1605 4 0 4 4 0 8 0 amappl2 88 547 0 488 2 0 2 2 0 8 0 amappl1 80 9397 0 8796 15 0 15 15 0 8 2 amappl 88 2827 0 2686 5 0 5 5 0 92 0 uvmvnodes 80 102 0 0 3 0 3 3 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 472 0 443 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 472 0 443 1 0 1 1 0 8 0 vmmpekpl 168 5615 0 5583 2 0 2 2 0 8 0 vmmpepl 168 38225 0 36447 86 0 86 86 0 357 0 vmsppl 488 471 0 442 5 0 5 5 0 8 1 rwobjpl 80 14108 0 13113 24 0 24 24 0 8 2 pdppl 4096 951 0 884 99 20 79 85 0 8 12 pvpl 32 11114 0 0 90 0 90 90 0 265 0 pmappl 256 471 0 442 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 272 0 23 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838dfff0) 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(ffffffff839bdd40) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839bdd40) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff839bdd40,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 biowait(fffffd806d555590) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd806d555590) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_update(fffffd806c4fcbb0,1) at ffs_update+0x2fe sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(fffffd806c4fcbb0,0,4,fffffd80097fd5b0) at ffs_truncate+0xc9b sys/ufs/ffs/ffs_inode.c:-1 ufs_rmdir(ffff80002a304500) at ufs_rmdir+0x2f1 sys/ufs/ufs/ufs_vnops.c:1265 VOP_RMDIR(fffffd806cbf8e98,fffffd8067f85388,ffff80002a3045d8) at VOP_RMDIR+0x192 sys/kern/vfs_vops.c:413 dounlinkat(ffff80002a242a70,ffffff9c,74e124abe500,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1920 syscall(ffff80002a304750) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a304750) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 end trace frame: 0xffff80002a3047d0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff838dfff0) 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(ffffffff839bdd40) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839bdd40) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff839bdd40,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 biowait(fffffd806d555590) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd806d555590) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_update(fffffd806c4fcbb0,1) at ffs_update+0x2fe sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(fffffd806c4fcbb0,0,4,fffffd80097fd5b0) at ffs_truncate+0xc9b sys/ufs/ffs/ffs_inode.c:-1 ufs_rmdir(ffff80002a304500) at ufs_rmdir+0x2f1 sys/ufs/ufs/ufs_vnops.c:1265 VOP_RMDIR(fffffd806cbf8e98,fffffd8067f85388,ffff80002a3045d8) at VOP_RMDIR+0x192 sys/kern/vfs_vops.c:413 dounlinkat(ffff80002a242a70,ffffff9c,74e124abe500,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1920 syscall(ffff80002a304750) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a304750) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74e124abe4f0, count: -15 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x7dd227542300, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7dd227542300, count: -1