uvm_fault(0xfffffd806ee93378, 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 *472805 13276 32767 0x1010 0x4080000 0K syz-executor 372549 18674 32767 0x1010 0x4080000 1 syz-executor fifo_write(ffff80002f93e370) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80786b8298,ffff80002f93e408,8,fffffd807f7d33a8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd80786b8298,ffff800029fe6000,104,0,1,7e035b6e7266d6c4,ffff80002f93e530,fffffd80786b8298,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80002f93e530) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd806c274bf0,ffff80002f93e6b0,ffff80002f93e6e0,ffff80002f93e5e0,ffff800029fe6000) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff8000371cf6f0,20000a40,4,200001c0) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff80002f93e860) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002f93e860) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x22c881c0700, 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(0xfffffd806ee93378, 0x8, 0, 1) -> e ddb{0}> trace fifo_write(ffff80002f93e370) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80786b8298,ffff80002f93e408,8,fffffd807f7d33a8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd80786b8298,ffff800029fe6000,104,0,1,7e035b6e7266d6c4,ffff80002f93e530,fffffd80786b8298,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80002f93e530) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd806c274bf0,ffff80002f93e6b0,ffff80002f93e6e0,ffff80002f93e5e0,ffff800029fe6000) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff8000371cf6f0,20000a40,4,200001c0) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff80002f93e860) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002f93e860) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x22c881c0700, count: -8 ddb{0}> show registers rdi 0xfffffd80786b8298 rsi 0x422a __ALIGN_SIZE+0x322a rbp 0xffff80002f93e360 rbx 0xfffffd80786b8298 rdx 0xffff80002bd0d000 rcx 0x4229 __ALIGN_SIZE+0x3229 rax 0 r8 0 r9 0x1 r10 0xffffffff8344aff0 cpu_info_full_primary+0x1ff0 r11 0x3734176e3a79403f r12 0x4000 __ALIGN_SIZE+0x3000 r13 0xffff80002f93e408 r14 0xffff80002f93e370 r15 0x1 rip 0xffffffff82564d3e fifo_write+0x6e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002f93e330 ss 0 fifo_write+0x6e: movq 0x8(%rax),%r15 ddb{0}> show proc PROC (syz-executor) tid=472805 pid=13276 tcnt=4 stat=onproc flags process=1010 proc=4080000 runpri=17, usrpri=73, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000351934a8 scnt=3 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000351934a8,0xffff8000ffffc7b8 process=0xffff80003b423678 user=0xffff80002f939000, vmspace=0xfffffd806ee93378 estcpu=23, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 58694 167186 48258 32767 2 0x490 syz-executor 58694 423853 48258 32767 3 0x4000090 fsleep syz-executor 58694 161128 48258 32767 3 0x4000090 fsleep syz-executor 77722 101528 63077 32767 3 0x90 nanoslp syz-executor 77722 465850 63077 32767 2 0x4000010 syz-executor 77722 80935 63077 32767 3 0x4000090 fsleep syz-executor 50132 452434 80095 32767 2 0x490 syz-executor 50132 308177 80095 32767 3 0x4000090 fifor syz-executor 50132 284007 80095 32767 3 0x4000090 fsleep syz-executor 46832 314969 28775 32767 2 0x10 syz-executor 46832 32648 28775 32767 3 0x4000090 fsleep syz-executor 46832 400932 28775 32767 3 0x4000090 fsleep syz-executor 46832 408161 28775 32767 2 0x4000010 syz-executor 46832 268459 28775 32767 3 0x4000010 inode syz-executor 46832 93263 28775 32767 3 0x4000010 inode syz-executor 46832 397670 28775 32767 3 0x4000090 fsleep syz-executor 13276 412913 86360 32767 3 0x3010 suspend syz-executor *13276 472805 86360 32767 7 0x4081010 syz-executor 13276 243926 86360 32767 2 0x4081010 syz-executor 13276 416280 86360 32767 2 0x4081010 syz-executor 18674 392498 67783 32767 3 0x3010 suspend syz-executor 18674 372549 67783 32767 7 0x4081010 syz-executor 67783 440701 19105 32767 3 0x90 nanoslp syz-executor 28775 360142 15397 32767 3 0x90 nanoslp syz-executor 19105 317011 66505 0 3 0x82 wait syz-executor 15397 288352 66505 0 3 0x82 wait syz-executor 48258 287828 64686 32767 3 0x90 nanoslp syz-executor 64686 326555 66505 0 3 0x82 wait syz-executor 53589 458119 21239 32767 2 0x10 syz-executor 21239 175284 66505 0 3 0x82 wait syz-executor 86360 398910 66169 32767 3 0x90 nanoslp syz-executor 66169 281637 66505 0 3 0x82 wait syz-executor 30325 104235 24154 32767 2 0x10 syz-executor 63077 97852 33168 32767 2 0x490 syz-executor 80095 329028 7062 32767 2 0x490 syz-executor 7062 29153 66505 0 3 0x82 wait syz-executor 33168 306329 66505 0 3 0x82 wait syz-executor 24154 371436 66505 0 3 0x82 wait syz-executor 13032 10420 0 0 3 0x14200 bored sosplice 66505 330391 6444 0 3 0x82 kqread syz-executor 6444 135871 18053 0 3 0x10008a sigsusp ksh 18053 437553 75799 0 3 0x98 kqread sshd-session 75799 299134 37424 0 3 0x92 kqread sshd-session 70319 335966 1 0 3 0x100083 ttyin getty 37424 419822 1 0 3 0x88 kqread sshd 42599 463121 37883 73 2 0x1100010 syslogd 37883 500338 1 0 3 0x100082 sbwait syslogd 88358 109107 1 0 3 0x100080 kqread resolvd 73208 332763 70994 77 3 0x100092 kqread dhcpleased 55828 469296 70994 77 3 0x100092 kqread dhcpleased 70994 419946 1 0 3 0x80 kqread dhcpleased 90987 25642 0 0 3 0x14200 bored smr 12142 186407 0 0 3 0x14200 pgzero zerothread 50161 118558 0 0 3 0x14200 aiodoned aiodoned 71109 198669 0 0 3 0x14200 syncer update 24912 24164 0 0 3 0x14200 cleaner cleaner 70453 3149 0 0 3 0x14200 reaper reaper 37101 439808 0 0 3 0x14200 pgdaemon pagedaemon 11362 5733 0 0 3 0x14200 bored viomb 50997 480291 0 0 3 0x40014200 acpi0 acpi0 74472 121534 0 0 3 0x40014200 idle1 74663 368823 0 0 3 0x14200 bored softnet3 52892 328094 0 0 3 0x14200 bored softnet2 37133 489117 0 0 3 0x14200 bored softnet1 61673 205789 0 0 2 0x14200 softnet0 70696 114540 0 0 3 0x14200 bored systqmp 61516 152266 0 0 3 0x14200 bored systq 46193 497159 0 0 3 0x14200 tmoslp softclockmp 27422 457797 0 0 2 0x40014200 softclock 22321 237716 0 0 3 0x40014200 idle0 1 152220 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 77722 (syz-executor) thread 0xffff80004286ea80 (465850) exclusive rrwlock inode r = 0 (0xfffffd806c117b38) #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_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1728 #8 ufs_create+0x4e sys/ufs/ufs/ufs_vnops.c:147 #9 VOP_CREATE+0xff sys/kern/vfs_vops.c:103 #10 vn_open+0x491 sys/kern/vfs_vnops.c:116 #11 doopenat+0x31d sys/kern/vfs_syscalls.c:1123 #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 (0xfffffd806855fc58) #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 vn_open+0x1f4 sys/kern/vfs_vnops.c:107 #8 doopenat+0x31d sys/kern/vfs_syscalls.c:1123 #9 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #9 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 Process 46832 (syz-executor) thread 0xffff8000371da2f8 (408161) exclusive rrwlock inode r = 0 (0xfffffd806855f708) #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:3100 #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 (0xfffffd806855fb48) #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 domkdirat+0x8b sys/kern/vfs_syscalls.c:3085 #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 46832 (syz-executor) thread 0xffff8000371dafa0 (268459) exclusive rrwlock inode r = 0 (0xfffffd806855f3d8) #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 dorenameat+0x145 sys/kern/vfs_syscalls.c:2991 #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 13276 (syz-executor) thread 0xffff8000371cf6f0 (472805) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835c2918) #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 (0xfffffd806855f4e8) #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 53589 (syz-executor) thread 0xffff8000371cf978 (458119) exclusive rrwlock inode r = 0 (0xfffffd806855fa38) #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 (0xfffffd806c04d818) #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 Process 30325 (syz-executor) thread 0xffff8000371cecd0 (104235) exclusive rrwlock inode r = 0 (0xfffffd806855fd68) #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 (0xfffffd806b77b3d8) #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 42599 (syslogd) thread 0xffff8000ffffdbe8 (463121) exclusive rrwlock inode r = 0 (0xfffffd806e33eb40) #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:2927 #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 10203 10025K 10036K 166960K 11792 0 pcb 17 12K 12K 166960K 17 0 rtable 214 6K 7K 166960K 5343 0 pf 29 16K 16K 166960K 380 0 ifaddr 38 8K 9K 166960K 710 0 ifgroup 46 2K 2K 166960K 737 0 sysctl 4 1K 1K 166960K 4 0 counters 62 36K 36K 166960K 402 0 ioctlops 0 0K 2K 166960K 212 0 iov 0 0K 16K 166960K 116 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1458 92K 92K 166960K 4013 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 39 0 VM map 2 1K 1K 166960K 2 0 sem 11 1K 1K 166960K 12 0 dirhash 15 2K 3K 166960K 66 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 24 89K 157K 166960K 4573 0 sigio 0 0K 0K 166960K 89 0 proc 56 78K 176K 166960K 5249 0 subproc 104 6K 12K 166960K 2470 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 503 0 in_multi 88 6K 7K 166960K 1971 0 ether_multi 1 0K 0K 166960K 11 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 211 943K 943K 166960K 211 0 exec 0 0K 1K 166960K 2723 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 266 78K 130K 166960K 32750 0 UVM aobj 76 7K 7K 166960K 85 0 pinsyscall 45 90K 126K 166960K 9794 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 173 0 NDP 10 0K 2K 166960K 518 0 temp 80 6824K 6945K 166960K 33327 0 kqueue 16 26K 30K 166960K 361 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 120 549 0 545 2 1 1 2 0 8 0 rtentry 112 1926 0 1826 10 7 3 4 0 8 0 unpcb 144 2042 0 2021 18 17 1 4 0 8 0 syncache 336 22 0 22 14 13 1 1 0 8 1 tcpqe 32 7 0 7 4 4 0 1 0 8 0 tcpcb 808 1295 0 1291 42 41 1 8 0 8 0 arp 120 342 0 326 1 0 1 1 0 8 0 ipq 40 20 0 20 2 2 0 1 0 8 0 ipqe 40 193 0 193 2 2 0 1 0 8 0 inpcb 336 3508 0 3498 59 57 2 13 0 8 0 nd6 136 537 0 515 1 0 1 1 0 8 0 kcovpl 48 190 0 182 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 7862 0 7446 117 91 26 31 0 8 0 art_table 32 7863 0 7446 6 2 4 4 0 8 0 art_node 16 1925 0 1834 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 15 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 82 0 9 3 0 3 3 0 8 0 dirhash 1024 54 0 34 3 0 3 3 0 8 0 dino2pl 256 4652 0 2766 118 0 118 118 0 8 0 ffsino 272 4654 0 2766 126 0 126 126 0 8 0 nchpl 144 7402 0 5460 73 1 72 72 0 8 0 uvmvnodes 80 7133 0 0 146 0 146 146 0 8 0 vnodes 216 7133 0 0 397 0 397 397 0 8 0 namei 1024 40481 0 40473 33 31 2 2 0 8 0 percpumem 16 215 0 170 1 0 1 1 0 8 0 kstatmem 264 360 0 340 2 0 2 2 0 8 0 scxspl 216 89740 0 89740 28 27 1 8 1 8 1 plimitpl 152 885 0 858 2 0 2 2 0 8 0 sigapl 424 4480 0 4425 14 6 8 9 0 8 0 futexpl 64 27195 0 27188 16 15 1 1 0 8 0 knotepl 120 698 0 0 10 0 10 10 0 8 0 kqueuepl 216 839 0 824 9 8 1 5 0 8 0 pipepl 320 1044 0 1017 19 14 5 8 0 8 0 fdescpl 496 4461 0 4425 14 8 6 7 0 8 1 filepl 152 21262 0 21001 41 28 13 18 0 8 1 lockfpl 104 550 0 544 2 0 2 2 0 8 1 lockfspl 48 183 0 179 1 0 1 1 0 8 0 sessionpl 144 184 0 168 1 0 1 1 0 8 0 pgrppl 48 530 0 506 1 0 1 1 0 8 0 ucredpl 104 3435 0 3416 1 0 1 1 0 8 0 zombiepl 144 4427 0 4425 1 0 1 1 0 8 0 processpl 1160 4480 0 4425 9 3 6 6 0 8 0 procpl 648 7450 0 7379 15 8 7 7 0 8 0 srpgc 96 23 0 23 9 9 0 1 0 8 0 sosppl 168 24 0 24 12 11 1 1 0 8 1 sockpl 664 6177 0 6142 82 78 4 15 0 8 0 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 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 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 372 0 0 30 2 28 30 0 8 1 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 648 0 0 22 0 22 22 0 8 0 bufpl 280 12170 0 3433 625 0 625 625 0 8 0 anonpl 24 630609 0 617395 176 95 81 100 0 185 1 amapchunkpl 152 104286 0 103246 118 77 41 43 0 158 1 amappl16 200 10244 0 10131 146 139 7 27 0 8 1 amappl15 192 8 0 8 2 2 0 1 0 8 0 amappl14 184 429 0 419 1 0 1 1 0 8 0 amappl13 176 18 0 18 4 4 0 1 0 8 0 amappl12 168 7732 0 7695 16 14 2 3 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 11 0 11 1 1 0 1 0 8 0 amappl9 144 125 0 125 1 1 0 1 0 8 0 amappl8 136 48 0 46 1 0 1 1 0 8 0 amappl7 128 423 0 412 1 0 1 1 0 8 0 amappl6 120 1805 0 1803 1 0 1 1 0 8 0 amappl5 112 780 0 771 1 0 1 1 0 8 0 amappl4 104 795 0 776 1 0 1 1 0 8 0 amappl3 96 19778 0 19637 5 1 4 4 0 8 0 amappl2 88 2910 0 2853 2 0 2 2 0 8 0 amappl1 80 30436 0 29879 20 7 13 14 0 8 0 amappl 88 31078 0 30867 10 4 6 6 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 84 0 9 2 0 2 2 0 8 0 uaddrrnd 24 4461 0 4425 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4461 0 4425 1 0 1 1 0 8 0 vmmpekpl 168 36325 0 36258 7 2 5 5 0 8 0 vmmpepl 168 271062 0 268953 190 96 94 113 0 357 2 vmsppl 440 4460 0 4425 7 1 6 6 0 8 0 rwobjpl 56 80835 0 72642 127 11 116 116 0 8 0 pdppl 4096 8929 0 8850 664 583 81 113 0 8 2 pvpl 32 47479 0 0 373 0 373 373 0 265 0 pmappl 248 4460 0 4425 12 9 3 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1236 0 820 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace fifo_write(ffff80002f93e370) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80786b8298,ffff80002f93e408,8,fffffd807f7d33a8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd80786b8298,ffff800029fe6000,104,0,1,7e035b6e7266d6c4,ffff80002f93e530,fffffd80786b8298,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80002f93e530) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd806c274bf0,ffff80002f93e6b0,ffff80002f93e6e0,ffff80002f93e5e0,ffff800029fe6000) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff8000371cf6f0,20000a40,4,200001c0) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff80002f93e860) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002f93e860) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x22c881c0700, 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 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 copyout() at copyout+0x57 syscall(ffff80002a0be260) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0be260) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xedd4a73b910, count: 8 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 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 copyout() at copyout+0x57 syscall(ffff80002a0be260) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0be260) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xedd4a73b910, count: -7