uvm_fault(0xfffffd806bf07528, 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 55588 72505 0 0 0 1 syz-executor *365668 72505 0 0 0x4000000 0K syz-executor fifo_write(ffff8000371c1620) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd807e3b1518,ffff8000371c16b8,8,fffffd807f7d3208) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd807e3b1518,ffff80002a05d400,fb,0,1,18fba285eb3d91a5,ffff8000371c17e0,fffffd807e3b1518,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff8000371c17e0) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd806bff4298,ffff8000371c1960,ffff8000371c1990,ffff8000371c1890,ffff80002a05d400) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff800035b96a50,20001640,ffffff9c,20000440) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff8000371c1b10) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371c1b10) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x43458434970, 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(0xfffffd806bf07528, 0x8, 0, 1) -> e ddb{0}> trace fifo_write(ffff8000371c1620) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd807e3b1518,ffff8000371c16b8,8,fffffd807f7d3208) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd807e3b1518,ffff80002a05d400,fb,0,1,18fba285eb3d91a5,ffff8000371c17e0,fffffd807e3b1518,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff8000371c17e0) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd806bff4298,ffff8000371c1960,ffff8000371c1990,ffff8000371c1890,ffff80002a05d400) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff800035b96a50,20001640,ffffff9c,20000440) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff8000371c1b10) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371c1b10) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x43458434970, count: -8 ddb{0}> show registers rdi 0xfffffd807e3b1518 rsi 0x1e1b __ALIGN_SIZE+0xe1b rbp 0xffff8000371c1610 rbx 0xfffffd807e3b1518 rdx 0xffff80002a16d000 rcx 0x1e1a __ALIGN_SIZE+0xe1a rax 0 r8 0 r9 0x1 r10 0xffffffff83436ff0 cpu_info_full_primary+0x1ff0 r11 0x75667390f09b445b r12 0x4000 __ALIGN_SIZE+0x3000 r13 0xffff8000371c16b8 r14 0xffff8000371c1620 r15 0x1 rip 0xffffffff819634ae fifo_write+0x6e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000371c15e0 ss 0 fifo_write+0x6e: movq 0x8(%rax),%r15 ddb{0}> show proc PROC (syz-executor) tid=365668 pid=72505 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800035b96540,0xffff800035b97c18 process=0xffff80002d176458 user=0xffff8000371bc000, vmspace=0xfffffd806bf07528 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 72505 55588 84703 0 7 0 syz-executor *72505 365668 84703 0 7 0x4000000 syz-executor 89236 257826 34707 0 2 0 syz-executor 89236 518451 34707 0 3 0x4000080 fsleep syz-executor 9241 426881 31883 0 2 0 syz-executor 9241 178781 31883 0 3 0x4000080 fsleep syz-executor 2595 101783 0 0 3 0x14200 bored sosplice 33878 43033 12216 0 2 0x2 ifconfig 12216 318830 87186 0 3 0x10008a sigsusp sh 88810 303446 53704 0 2 0 syz-executor 88810 496893 53704 0 2 0x4000000 syz-executor 88810 54962 53704 0 2 0x4000000 syz-executor 88810 435430 53704 0 2 0x4000000 syz-executor 2685 403866 82720 0 3 0x100082 sbwait arp 82720 80642 87596 0 3 0x10008a sigsusp sh 45934 170391 1286 0 2 0x2 syz-executor 75972 409656 1286 0 2 0x2 syz-executor 34707 212719 1286 0 3 0x82 nanoslp syz-executor 87186 508244 1286 0 3 0x82 wait syz-executor 53704 340784 1286 0 2 0x2 syz-executor 31883 376098 1286 0 3 0x82 nanoslp syz-executor 87596 24695 1286 0 3 0x82 wait syz-executor 84703 497568 1286 0 3 0x82 nanoslp syz-executor 1286 361558 76587 0 3 0x82 kqread syz-executor 76587 522805 51632 0 3 0x10008a sigsusp ksh 51632 512796 90898 0 3 0x98 kqread sshd-session 90898 481166 12042 0 3 0x92 kqread sshd-session 30678 494970 1 0 3 0x100083 ttyin getty 12042 394119 1 0 3 0x88 kqread sshd 9034 370 3060 74 3 0x1100092 bpf pflogd 3060 342130 1 0 3 0x80 sbwait pflogd 72636 429835 34021 73 3 0x1100090 kqread syslogd 34021 460815 1 0 3 0x100082 sbwait syslogd 52016 45736 1 0 3 0x100080 kqread resolvd 30319 773 45051 77 3 0x100092 kqread dhcpleased 63610 511031 45051 77 3 0x100092 kqread dhcpleased 45051 32809 1 0 3 0x80 kqread dhcpleased 55255 396885 0 0 2 0x40014200 smr 14428 397921 0 0 2 0x14200 zerothread 76108 157944 0 0 3 0x14200 aiodoned aiodoned 22332 308322 0 0 3 0x14200 syncer update 77918 40506 0 0 3 0x14200 cleaner cleaner 61836 208382 0 0 3 0x14200 reaper reaper 86176 27553 0 0 3 0x14200 pgdaemon pagedaemon 9611 277507 0 0 3 0x14200 bored viomb 47813 340094 0 0 3 0x40014200 acpi0 acpi0 31553 385894 0 0 3 0x40014200 idle1 5165 73646 0 0 3 0x14200 bored softnet3 67621 232913 0 0 3 0x14200 bored softnet2 97325 488512 0 0 3 0x14200 bored softnet1 19156 276794 0 0 3 0x14200 bored softnet0 4727 458184 0 0 3 0x14200 bored systqmp 29156 269714 0 0 3 0x14200 bored systq 24187 236134 0 0 3 0x14200 tmoslp softclockmp 3214 302921 0 0 3 0x40014200 tmoslp softclock 39055 109912 0 0 3 0x40014200 idle0 1 345199 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 72505 (syz-executor) thread 0xffff800035b96a50 (365668) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff834fce00) #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 ffs_update+0x34c sys/ufs/ffs/ffs_inode.c:111 #7 ufs_direnter+0x721 sys/ufs/ufs/ufs_lookup.c:726 #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 (0xfffffd807e328920) #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 45934 (syz-executor) thread 0xffff8000ffff62a8 (170391) exclusive rrwlock inode r = 0 (0xfffffd807e328d60) #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:120 #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 (0xfffffd806ca6d098) #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 75972 (syz-executor) thread 0xffff8000ffff6530 (409656) exclusive rrwlock inode r = 0 (0xfffffd807e328f80) #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 (0xfffffd806ca6d2b8) #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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10204 10286K 10294K 166960K 11284 0 pcb 17 14K 16K 166960K 20 0 rtable 212 5K 5K 166960K 322 0 pf 34 17K 18K 166960K 45 0 ifaddr 40 6K 6K 166960K 42 0 ifgroup 55 2K 2K 166960K 55 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 4K 166960K 1482 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1369 86K 86K 166960K 1394 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 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 18 65K 93K 166960K 139 0 proc 74 103K 128K 166960K 519 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 2 0 in_multi 86 6K 6K 166960K 86 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 37 175K 175K 166960K 37 0 exec 0 0K 1K 166960K 362 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 220 72K 73K 166960K 2861 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 44 88K 105K 166960K 1224 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 15 0K 1K 166960K 25 0 temp 37 6810K 6874K 166960K 3946 0 kqueue 14 22K 24K 166960K 24 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 34 0 30 1 0 1 1 0 8 0 rtentry 112 100 0 1 3 0 3 3 0 8 0 unpcb 144 46 0 25 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 14 0 9 1 0 1 1 0 8 0 arp 120 17 0 0 1 0 1 1 0 8 0 inpcb 336 206 0 66 13 0 13 13 0 8 1 nd6 136 19 0 0 1 0 1 1 0 8 0 kcovpl 48 8 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 16 0 0 1 0 1 1 0 8 0 pfstkey 128 16 0 0 1 0 1 1 0 8 0 pfstate 376 16 0 0 2 0 2 2 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 395 0 0 25 0 25 25 0 8 0 art_table 32 396 0 0 4 0 4 4 0 8 0 art_node 16 99 0 8 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1569 0 61 95 0 95 95 0 8 0 ffsino 272 1569 0 61 101 0 101 101 0 8 0 nchpl 144 1765 0 83 63 0 63 63 0 8 0 uvmvnodes 80 1693 0 0 35 0 35 35 0 8 0 vnodes 216 1693 0 0 95 0 95 95 0 8 0 namei 1024 5570 0 5568 2 0 2 2 0 8 1 percpumem 16 46 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 5150 0 5150 4 2 2 2 1 8 2 plimitpl 152 28 0 11 1 0 1 1 0 8 0 sigapl 424 447 0 396 8 1 7 7 0 8 0 futexpl 64 215 0 213 1 0 1 1 0 8 0 knotepl 120 56 0 0 2 0 2 2 0 8 0 kqueuepl 216 20 0 10 1 0 1 1 0 8 0 pipepl 320 108 0 81 3 0 3 3 0 8 0 fdescpl 496 428 0 396 5 0 5 5 0 8 0 filepl 152 1624 0 1241 15 0 15 15 0 8 0 lockfpl 104 9 0 6 1 0 1 1 0 8 0 lockfspl 48 6 0 3 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 30 0 13 1 0 1 1 0 8 0 ucredpl 104 63 0 50 1 0 1 1 0 8 0 zombiepl 144 396 0 396 1 0 1 1 0 8 1 processpl 1160 447 0 396 5 0 5 5 0 8 0 procpl 648 477 0 420 7 1 6 6 0 8 0 sockpl 664 286 0 121 15 0 15 15 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 205 0 0 26 0 26 26 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 242 0 0 16 0 16 16 0 8 0 bufpl 280 2217 0 97 152 0 152 152 0 8 0 anonpl 24 123577 0 120178 25 1 24 25 0 185 1 amapchunkpl 152 8921 0 8487 20 0 20 20 0 158 0 amappl16 200 3000 0 2990 5 1 4 5 0 8 3 amappl15 192 4 0 3 1 0 1 1 0 8 0 amappl14 184 112 0 99 1 0 1 1 0 8 0 amappl13 176 15 0 15 1 1 0 1 0 8 0 amappl12 168 1107 0 1073 4 1 3 3 0 8 0 amappl11 160 80 0 66 1 0 1 1 0 8 0 amappl10 152 13 0 13 1 1 0 1 0 8 0 amappl9 144 137 0 137 1 1 0 1 0 8 0 amappl8 136 37 0 35 1 0 1 1 0 8 0 amappl7 128 105 0 92 1 0 1 1 0 8 0 amappl6 120 175 0 171 1 0 1 1 0 8 0 amappl5 112 147 0 135 1 0 1 1 0 8 0 amappl4 104 323 0 303 1 0 1 1 0 8 0 amappl3 96 1789 0 1701 3 0 3 3 0 8 0 amappl2 88 639 0 560 2 0 2 2 0 8 0 amappl1 80 7709 0 7097 15 0 15 15 0 8 1 amappl 88 2490 0 2335 4 0 4 4 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 428 0 396 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 428 0 396 1 0 1 1 0 8 0 vmmpekpl 168 5793 0 5761 2 0 2 2 0 8 0 vmmpepl 168 34873 0 33052 88 1 87 87 0 357 2 vmsppl 440 427 0 396 6 1 5 5 0 8 0 rwobjpl 56 15440 0 12781 39 0 39 39 0 8 0 pdppl 4096 863 0 792 99 20 79 85 0 8 8 pvpl 32 10207 0 0 83 0 83 83 0 265 0 pmappl 248 427 0 396 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 388 0 22 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace fifo_write(ffff8000371c1620) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd807e3b1518,ffff8000371c16b8,8,fffffd807f7d3208) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd807e3b1518,ffff80002a05d400,fb,0,1,18fba285eb3d91a5,ffff8000371c17e0,fffffd807e3b1518,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff8000371c17e0) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd806bff4298,ffff8000371c1960,ffff8000371c1990,ffff8000371c1890,ffff80002a05d400) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff800035b96a50,20001640,ffffff9c,20000440) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff8000371c1b10) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371c1b10) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x43458434970, 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 end of kernel end trace frame: 0x7185f088c980, count: 12 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 end of kernel end trace frame: 0x7185f088c980, count: -3