uvm_fault(0xfffffd806c487c20, 0x8, 0, 1) -> e kernel: page fault trap, code=0 Stopped at fifo_write+0x6e: movq 0x8(%rax),%r15 TID PID UID PRFLAGS PFLAGS CPU COMMAND *423476 60475 0 0 0x4000000 0K syz-executor 494886 16344 0 0x2 0 1 syz-executor fifo_write(ffff80003699be60) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd807cf88618,ffff80003699bef8,8,fffffd807f7d34e0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd807cf88618,ffff80002a029c00,f7,0,1,430a1d16ce3f6917,ffff80003699c020,fffffd807cf88618,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80003699c020) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd807cf88468,ffff80003699c1a0,ffff80003699c1d0,ffff80003699c0d0,ffff80002a029c00) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff8000ffff22a8,200001c0,4,20000040) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff80003699c350) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003699c350) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6d04ff62340, 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(0xfffffd806c487c20, 0x8, 0, 1) -> e ddb{0}> trace fifo_write(ffff80003699be60) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd807cf88618,ffff80003699bef8,8,fffffd807f7d34e0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd807cf88618,ffff80002a029c00,f7,0,1,430a1d16ce3f6917,ffff80003699c020,fffffd807cf88618,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80003699c020) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd807cf88468,ffff80003699c1a0,ffff80003699c1d0,ffff80003699c0d0,ffff80002a029c00) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff8000ffff22a8,200001c0,4,20000040) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff80003699c350) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003699c350) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6d04ff62340, count: -8 ddb{0}> show registers rdi 0xfffffd807cf88618 rsi 0x225c __ALIGN_SIZE+0x125c rbp 0xffff80003699be50 rbx 0xfffffd807cf88618 rdx 0xffff80002df75000 rcx 0x225b __ALIGN_SIZE+0x125b rax 0 r8 0 r9 0x1 r10 0xffffffff83440ff0 cpu_info_full_primary+0x1ff0 r11 0x42fa5ad1699d67d3 r12 0x4000 __ALIGN_SIZE+0x3000 r13 0xffff80003699bef8 r14 0xffff80003699be60 r15 0x1 rip 0xffffffff822405ce fifo_write+0x6e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003699be20 ss 0 fifo_write+0x6e: movq 0x8(%rax),%r15 ddb{0}> show proc PROC (syz-executor) tid=423476 pid=60475 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a03f6e0,0xffff8000ffff2a50 process=0xffff8000ffff4db0 user=0xffff800036997000, vmspace=0xfffffd806c487c20 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 72739 16730 92580 0 2 0 syz-executor 60475 247110 28673 0 2 0 syz-executor *60475 423476 28673 0 7 0x4000000 syz-executor 23951 496120 86843 0 3 0x80 nanoslp syz-executor 23951 233581 86843 0 3 0x4000080 sbwait syz-executor 23951 99686 86843 0 3 0x4000080 fsleep syz-executor 23951 429500 86843 0 3 0x4000080 fsleep syz-executor 15621 140093 18476 0 3 0x80 nanoslp syz-executor 15621 9790 18476 0 3 0x4000080 lockf syz-executor 15621 88480 18476 0 3 0x4000080 fsleep syz-executor 9949 464493 40768 0 3 0x82 nanoslp syz-executor 92580 24672 40768 0 2 0x2 syz-executor 94556 174399 40768 0 3 0x82 nanoslp syz-executor 16344 494886 40768 0 7 0x2 syz-executor 28673 155030 40768 0 2 0x482 syz-executor 86843 462776 40768 0 2 0x482 syz-executor 10798 73866 40768 0 2 0x2 syz-executor 18476 265748 40768 0 3 0x82 nanoslp syz-executor 95966 196009 0 0 3 0x14200 bored sosplice 40768 353795 640 0 3 0x82 kqread syz-executor 640 352960 39318 0 3 0x10008a sigsusp ksh 39318 429838 18022 0 3 0x98 kqread sshd-session 18022 435902 72489 0 3 0x92 kqread sshd-session 27048 357256 1 0 3 0x100083 ttyin getty 72489 142532 1 0 3 0x88 kqread sshd 67978 350833 70459 74 3 0x1100092 bpf pflogd 70459 88635 1 0 3 0x80 sbwait pflogd 88842 113365 7331 73 2 0x1100010 syslogd 7331 300456 1 0 3 0x100082 sbwait syslogd 75936 508042 1 0 3 0x100080 kqread resolvd 5825 445702 72314 77 3 0x100092 kqread dhcpleased 27731 68666 72314 77 3 0x100092 kqread dhcpleased 72314 229514 1 0 3 0x80 kqread dhcpleased 82676 123202 0 0 3 0x14200 bored smr 644 370760 0 0 3 0x14200 pgzero zerothread 89742 390009 0 0 3 0x14200 aiodoned aiodoned 9507 111552 0 0 3 0x14200 syncer update 26661 258535 0 0 3 0x14200 cleaner cleaner 27572 275494 0 0 3 0x14200 reaper reaper 70636 18780 0 0 3 0x14200 pgdaemon pagedaemon 48431 121526 0 0 3 0x14200 bored viomb 4631 522731 0 0 3 0x40014200 acpi0 acpi0 79740 198014 0 0 3 0x40014200 idle1 89284 419123 0 0 3 0x14200 bored softnet3 99667 65061 0 0 3 0x14200 bored softnet2 77038 201961 0 0 3 0x14200 bored softnet1 22675 461226 0 0 3 0x14200 bored softnet0 40817 87033 0 0 3 0x14200 bored systqmp 29585 28643 0 0 3 0x14200 bored systq 20799 367208 0 0 3 0x14200 tmoslp softclockmp 47736 26903 0 0 2 0x40014200 softclock 47942 25690 0 0 3 0x40014200 idle0 1 198024 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 60475 (syz-executor) thread 0xffff8000ffff22a8 (423476) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835f27c8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 __mp_acquire_count+0x58 #2 mi_switch+0x658 sys/kern/sched_bsd.c:460 #3 sleep_finish+0x219 sys/kern/kern_synch.c:416 #4 biowait+0xc1 sys/kern/vfs_bio.c:1254 #5 bwrite+0x2e2 sys/kern/vfs_bio.c:766 #6 VOP_BWRITE+0x60 sys/kern/vfs_vops.c:646 #7 ufs_direnter+0x7d1 sys/ufs/ufs/ufs_lookup.c:833 #8 ufs_makeinode+0x51e sys/ufs/ufs/ufs_vnops.c:1764 #9 ufs_symlink+0x54 sys/ufs/ufs/ufs_vnops.c:1293 #10 VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 #11 dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 #12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e6cd818) #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 ufs_ihashget+0x171 sys/ufs/ufs/ufs_ihash.c:95 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #9 ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1728 #10 ufs_symlink+0x54 sys/ufs/ufs/ufs_vnops.c:1293 #11 VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 #12 dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 Process 16344 (syz-executor) thread 0xffff8000ffff0538 (494886) exclusive rwlock amaplk r = 0 (0xfffffd8064c27ac8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvm_fault_check+0x521 sys/uvm/uvm_fault.c:782 #2 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #3 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #4 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806bec72a8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 #3 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 Process 10798 (syz-executor) thread 0xffff80002a03e2a0 (73866) exclusive rrwlock inode r = 0 (0xfffffd806e6cd0a8) #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 ufs_ihashget+0x171 sys/ufs/ufs/ufs_ihash.c:95 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807833a2c8) #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 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x218 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 Process 88842 (syslogd) thread 0xffff8000ffffdbe8 (113365) exclusive rrwlock inode r = 0 (0xfffffd806e4a31b0) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10226 10163K 10244K 166960K 11538 0 pcb 17 12K 12K 166960K 38 0 rtable 239 7K 7K 166960K 668 0 pf 37 18K 18K 166960K 72 0 ifaddr 44 7K 7K 166960K 80 0 ifgroup 59 2K 2K 166960K 94 0 counters 66 36K 36K 166960K 82 0 ioctlops 0 0K 4K 166960K 1574 0 iov 1 0K 12K 166960K 13 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1464 92K 92K 166960K 1720 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 97K 166960K 402 0 sigio 0 0K 0K 166960K 1 0 proc 70 91K 152K 166960K 773 0 subproc 104 6K 6K 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 11 0 in_multi 99 7K 7K 166960K 190 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 193 864K 864K 166960K 193 0 exec 0 0K 1K 166960K 506 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 223 72K 77K 166960K 4994 0 UVM aobj 6 2K 2K 166960K 7 0 pinsyscall 41 82K 112K 166960K 1719 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 9 0 NDP 13 0K 2K 166960K 53 0 temp 37 6814K 7070K 166960K 5907 0 kqueue 14 22K 26K 166960K 55 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 68 0 63 1 0 1 1 0 8 0 rtentry 112 209 0 98 4 0 4 4 0 8 0 unpcb 144 250 0 231 2 0 2 2 0 8 1 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 217 0 212 8 7 1 8 0 8 0 arp 120 37 0 19 1 0 1 1 0 8 0 inpcb 336 384 0 372 7 5 2 7 0 8 0 nd6 136 49 0 24 1 0 1 1 0 8 0 kcovpl 48 16 0 8 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 39 0 12 1 0 1 1 0 8 0 pfstkey 128 39 0 12 1 0 1 1 0 8 0 pfstate 376 39 0 12 3 0 3 3 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 256 813 0 356 29 0 29 29 0 8 0 art_table 32 814 0 356 4 0 4 4 0 8 0 art_node 16 208 0 107 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 0 1 0 1 1 0 8 0 semapl 112 5 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 1 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 1816 0 290 96 0 96 96 0 8 0 ffsino 272 1816 0 290 102 0 102 102 0 8 0 nchpl 144 2217 0 517 64 0 64 64 0 8 0 uvmvnodes 80 2229 0 0 46 0 46 46 0 8 0 vnodes 216 2229 0 0 124 0 124 124 0 8 0 namei 1024 8061 0 8060 2 1 1 2 0 8 0 percpumem 16 55 0 8 1 0 1 1 0 8 0 kstatmem 264 42 0 16 2 0 2 2 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 8833 0 8833 3 2 1 2 1 8 1 plimitpl 152 124 0 106 1 0 1 1 0 8 0 sigapl 424 697 0 648 7 1 6 7 0 8 0 futexpl 64 2198 0 2195 1 0 1 1 0 8 0 knotepl 120 316 0 0 10 0 10 10 0 8 0 kqueuepl 216 72 0 62 1 0 1 1 0 8 0 pipepl 320 138 0 110 3 0 3 3 0 8 0 fdescpl 496 678 0 648 7 2 5 6 0 8 0 filepl 152 2920 0 2657 17 4 13 15 0 8 1 lockfpl 104 242 0 238 2 1 1 2 0 8 0 lockfspl 48 117 0 114 1 0 1 1 0 8 0 sessionpl 144 30 0 21 1 0 1 1 0 8 0 pgrppl 48 46 0 29 1 0 1 1 0 8 0 ucredpl 104 331 0 317 1 0 1 1 0 8 0 zombiepl 144 650 0 648 1 0 1 1 0 8 0 processpl 1160 697 0 648 5 1 4 5 0 8 0 procpl 648 959 0 904 6 0 6 6 0 8 0 sosppl 168 4 0 4 1 1 0 1 0 8 0 sockpl 664 703 0 667 9 4 5 9 0 8 1 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 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 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 218 0 0 28 1 27 28 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 267 0 0 16 0 16 16 0 8 0 bufpl 280 4949 0 99 347 0 347 347 0 8 0 anonpl 24 164129 0 160807 52 2 50 50 0 185 22 amapchunkpl 152 15799 0 15338 32 0 32 32 0 158 10 amappl16 200 3960 0 3945 20 17 3 14 0 8 2 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 132 0 120 1 0 1 1 0 8 0 amappl13 176 12 0 12 1 1 0 1 0 8 0 amappl12 168 1465 0 1436 4 2 2 3 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 13 0 13 1 1 0 1 0 8 0 amappl9 144 145 0 145 1 1 0 1 0 8 0 amappl8 136 19 0 17 1 0 1 1 0 8 0 amappl7 128 128 0 115 1 0 1 1 0 8 0 amappl6 120 250 0 249 1 0 1 1 0 8 0 amappl5 112 168 0 156 1 0 1 1 0 8 0 amappl4 104 349 0 328 1 0 1 1 0 8 0 amappl3 96 2856 0 2763 3 0 3 3 0 8 0 amappl2 88 906 0 830 3 0 3 3 0 8 0 amappl1 80 9119 0 8541 16 3 13 16 0 8 0 amappl 88 4554 0 4393 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 6 0 1 1 0 1 1 0 8 0 uaddrrnd 24 678 0 648 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 678 0 648 1 0 1 1 0 8 0 vmmpekpl 168 7433 0 7380 3 0 3 3 0 8 0 vmmpepl 168 49827 0 48016 94 7 87 94 0 357 1 vmsppl 440 677 0 648 6 2 4 5 0 8 0 rwobjpl 56 20378 0 17225 47 2 45 45 0 8 0 pdppl 4096 1363 0 1296 110 37 73 87 0 8 6 pvpl 32 26811 0 0 217 0 217 217 0 265 0 pmappl 248 677 0 648 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 409 0 54 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace fifo_write(ffff80003699be60) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd807cf88618,ffff80003699bef8,8,fffffd807f7d34e0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd807cf88618,ffff80002a029c00,f7,0,1,430a1d16ce3f6917,ffff80003699c020,fffffd807cf88618,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80003699c020) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd807cf88468,ffff80003699c1a0,ffff80003699c1d0,ffff80003699c0d0,ffff80002a029c00) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff8000ffff22a8,200001c0,4,20000040) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff80003699c350) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003699c350) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6d04ff62340, 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 __mp_lock(ffffffff835f25c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835f25c0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a0ba560) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0ba560) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x750608e949e0, 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(ffffffff835f25c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835f25c0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a0ba560) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0ba560) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x750608e949e0, count: -6