uvm_fault(0xffffffff83ab44f0, 0xffff800028ee2040, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs2_balloc+0xa0d: movq 0(%rcx,%rax,8),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND 38684 63420 0 0 0x4000c80 1 syz-executor *126336 57357 0 0x2 0x1 0K syz-executor ffs2_balloc(fffffd806daff380,502f9,50,fffffd80097fd068,1,ffff80002a34aba8) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a34ac30) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd8065193e88,ffff80002a34ace0,3,fffffd80097fd068) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a241ca0,fffffd8065193e88,fffffd80097fd068,ffff80002a34adb0,ffff80002a34ad90) at ktrwriteraw+0x1be sys/kern/kern_ktrace.c:691 ktrsysret(ffff80002a241ca0,5b,0,ffff80002a34ae80) at ktrsysret+0x192 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a241ca0,5b,0,ffff80002a34ae80) at ktrsysret+0x192 sys/kern/kern_ktrace.c:209 syscall(ffff80002a34af30) at syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a34af30) at syscall+0xa51 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x780b298ef5d0, count: 8 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(0xffffffff83ab44f0, 0xffff800028ee2040, 0, 1) -> d ddb{0}> trace ffs2_balloc(fffffd806daff380,502f9,50,fffffd80097fd068,1,ffff80002a34aba8) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a34ac30) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd8065193e88,ffff80002a34ace0,3,fffffd80097fd068) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a241ca0,fffffd8065193e88,fffffd80097fd068,ffff80002a34adb0,ffff80002a34ad90) at ktrwriteraw+0x1be sys/kern/kern_ktrace.c:691 ktrsysret(ffff80002a241ca0,5b,0,ffff80002a34ae80) at ktrsysret+0x192 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a241ca0,5b,0,ffff80002a34ae80) at ktrsysret+0x192 sys/kern/kern_ktrace.c:209 syscall(ffff80002a34af30) at syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a34af30) at syscall+0xa51 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x780b298ef5d0, count: -7 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a34ab50 rbx 0 rdx 0 rcx 0xffff800028ee2000 rax 0x8 r8 0xffffffffffffffff r9 0xffff80002a34aba8 r10 0xec74ca9f527036ac r11 0x232e18cef667afbd r12 0x1 r13 0xffff800000c31800 r14 0xffff80002a34a9e0 r15 0xfffffd80662196a0 rip 0xffffffff8244839d ffs2_balloc+0xa0d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a34a9d0 ss 0 ffs2_balloc+0xa0d: movq 0(%rcx,%rax,8),%r14 ddb{0}> show proc PROC (syz-executor) tid=126336 pid=57357 tcnt=1 stat=onproc flags process=2 proc=1 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffca68,0xffff80002a241a18 process=0xffff8000ffff49a8 user=0xffff80002a345000, vmspace=0xfffffd800b0637a0 estcpu=33, cpticks=26, pctcpu=0.5, user=0, sys=26, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11180 301340 25638 0 2 0 syz-executor 11180 19444 25638 0 2 0x4000000 syz-executor 79736 499878 4513 0 2 0 syz-executor 79736 167727 4513 0 2 0x4000000 syz-executor 56144 456354 7747 0 2 0 syz-executor 56144 276011 7747 0 2 0x4000000 syz-executor 63420 418316 69730 0 2 0xc80 syz-executor 63420 38684 69730 0 7 0x4000c80 syz-executor 44615 443974 57357 0 2 0xc80 syz-executor 44615 427497 57357 0 3 0x4000080 ttyretype syz-executor 44615 333296 57357 0 3 0x4000080 fsleep syz-executor 50479 60981 25789 0 2 0x3000 syz-executor 25789 502409 82396 0 2 0xc82 syz-executor 35326 67369 82396 0 2 0xc82 syz-executor 69730 499937 82396 0 2 0xc82 syz-executor 4513 122751 82396 0 2 0xc82 syz-executor *57357 126336 82396 0 7 0x3 syz-executor 7747 452159 82396 0 2 0xc82 syz-executor 25638 263960 82396 0 2 0xc82 syz-executor 17011 444887 82396 0 3 0x82 wait syz-executor 82396 132367 43681 0 3 0x82 kqread syz-executor 43681 394520 99639 0 3 0x10008a sigsusp ksh 99639 307944 83935 0 3 0x98 kqread sshd-session 83935 475964 18307 0 3 0x92 kqread sshd-session 18297 110317 1 0 3 0x100083 ttyopn getty 18307 250036 1 0 3 0x88 kqread sshd 34770 332687 36450 74 3 0x1100092 bpf pflogd 36450 473369 1 0 3 0x80 sbwait pflogd 12779 238130 93718 73 3 0x1100090 kqread syslogd 93718 89572 1 0 3 0x100082 sbwait syslogd 79276 104100 1 0 3 0x100080 kqread resolvd 96957 104743 43930 77 3 0x100092 kqread dhcpleased 10996 438194 43930 77 3 0x100092 kqread dhcpleased 43930 230943 1 0 3 0x80 kqread dhcpleased 37782 163044 0 0 3 0x14200 bored smr 52355 65235 0 0 2 0x14200 zerothread 20681 511876 0 0 3 0x14200 aiodoned aiodoned 34294 159160 0 0 3 0x14200 syncer update 13982 253195 0 0 3 0x14200 cleaner cleaner 6729 192464 0 0 3 0x14200 reaper reaper 84513 515299 0 0 3 0x14200 pgdaemon pagedaemon 94098 391932 0 0 3 0x14200 bored viomb 29952 333403 0 0 3 0x40014200 acpi0 acpi0 45947 241768 0 0 3 0x40014200 idle1 59163 386751 0 0 3 0x14200 bored softnet1 80157 205117 0 0 3 0x14200 bored softnet0 28037 63690 0 0 3 0x14200 bored systqmp 69087 288326 0 0 3 0x14200 bored systq 82972 27729 0 0 3 0x14200 tmoslp softclockmp 62521 417198 0 0 3 0x40014200 tmoslp softclock 23625 156869 0 0 3 0x40014200 idle0 1 519881 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 57357 (syz-executor) thread 0xffff80002a241ca0 (126336) exclusive rrwlock inode r = 0 (0xfffffd806daff420) #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:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ktrwriteraw+0x175 sys/kern/kern_ktrace.c:688 #7 ktrsysret+0x192 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] #7 ktrsysret+0x192 sys/kern/kern_ktrace.c:209 #8 syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] #8 syscall+0xa51 sys/arch/amd64/amd64/trap.c:804 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a4a780) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] #1 ktrsysret+0xde sys/kern/kern_ktrace.c:209 #2 syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] #2 syscall+0xa51 sys/arch/amd64/amd64/trap.c:804 #3 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11085 12090K 12301K 166960K 12720 0 pcb 17 12K 13K 166960K 130 0 rtable 154 6K 8K 166960K 458 0 pf 31 17K 81K 166960K 144 0 ifaddr 30 5K 7K 166960K 69 0 ifgroup 43 2K 2K 166960K 97 0 sysctl 4 1K 9K 166960K 11 0 counters 64 36K 37K 166960K 122 0 ioctlops 0 0K 4K 166960K 1794 0 iov 0 0K 12K 166960K 69 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1378 87K 87K 166960K 2030 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 37 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 727 0 sigio 0 0K 0K 166960K 8 0 proc 72 115K 164K 166960K 626 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 59 0 in_multi 62 4K 7K 166960K 126 0 ether_multi 1 0K 0K 166960K 6 0 mrt 3 0K 0K 166960K 22 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 492 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 245 159K 181K 166960K 8716 0 UVM aobj 51 5K 5K 166960K 53 0 pinsyscall 43 86K 104K 166960K 1960 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 35 0 NDP 9 0K 2K 166960K 45 0 temp 54 9082K 9154K 166960K 28171 0 kqueue 13 20K 30K 166960K 174 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 79 0 76 1 0 1 1 0 8 0 rtentry 176 138 0 77 6 0 6 6 0 8 0 unpcb 144 526 0 507 5 3 2 4 0 8 1 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 185 0 178 4 3 1 4 0 8 0 arp 136 23 0 10 1 0 1 1 0 8 0 inpcb 328 632 0 622 6 4 2 6 0 8 1 nd6 152 30 0 16 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 22 0 22 1 0 1 1 0 8 1 pppxif 1576 3 0 3 1 0 1 1 0 8 1 pfstscr 40 2 0 1 1 0 1 1 0 8 0 pffrag 232 8 0 0 1 0 1 1 0 482 0 pffrnode 88 6 0 0 1 0 1 1 0 8 0 pffrent 40 9 0 1 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 pfanchor 1288 5 0 0 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 59 0 12 1 0 1 1 0 8 0 pfstkey 128 61 0 14 2 0 2 2 0 8 0 pfstate 448 57 0 13 6 0 6 6 0 8 0 pfrule 1360 77 0 71 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 582 0 273 29 3 26 29 0 8 4 art_table 40 583 0 273 5 0 5 5 0 8 0 art_node 32 138 0 85 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 5 1 0 1 1 0 8 0 semapl 112 34 0 24 1 0 1 1 0 8 0 shmpl 112 50 0 2 2 0 2 2 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2701 0 1241 93 0 93 93 0 8 0 ffsino 296 2701 0 1241 114 0 114 114 0 8 0 nchpl 144 3731 0 2026 64 0 64 64 0 8 0 rtmask 32 4 0 4 1 0 1 1 0 8 1 vnodes 216 3232 0 0 180 0 180 180 0 8 0 namei 1024 13254 0 13254 1 0 1 1 0 8 1 percpumem 16 76 0 29 1 0 1 1 0 8 0 kstatmem 264 54 0 34 3 0 3 3 0 8 1 scsiplug 72 7 0 7 1 0 1 1 0 8 1 scxspl 216 19577 0 19577 11 3 8 8 1 8 8 plimitpl 152 220 0 200 1 0 1 1 0 8 0 sigapl 424 1055 0 1007 7 1 6 7 0 8 0 knotepl 120 541 0 0 17 0 17 17 0 8 0 kqueuepl 224 245 0 236 2 1 1 2 0 8 0 pipepl 344 166 0 139 3 0 3 3 0 8 0 fdescpl 528 1039 0 1007 3 0 3 3 0 8 0 filepl 160 5953 0 5723 14 0 14 14 0 8 4 lockfpl 104 313 0 310 1 0 1 1 0 8 0 lockfspl 48 118 0 115 1 0 1 1 0 8 0 sessionpl 144 50 0 41 1 0 1 1 0 8 0 pgrppl 48 63 0 46 1 0 1 1 0 8 0 ucredpl 104 814 0 800 1 0 1 1 0 8 0 zombiepl 144 1010 0 1007 1 0 1 1 0 8 0 processpl 1232 1055 0 1007 5 1 4 5 0 8 0 procpl 664 2078 0 2024 6 0 6 6 0 8 0 sockpl 752 1255 0 1223 10 3 7 10 0 8 3 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 18 0 0 3 0 3 3 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k 2048 48 0 0 6 0 6 6 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 253 0 0 16 0 16 16 0 8 0 bufpl 280 7584 0 1454 438 0 438 438 0 8 0 anonpl 32 10646 0 0 86 0 86 86 0 246 0 amapchunkpl 152 27602 0 27088 34 6 28 34 0 158 7 amappl16 200 3437 0 3313 33 16 17 25 0 8 4 amappl15 192 24 0 24 1 1 0 1 0 8 0 amappl14 184 452 0 451 1 0 1 1 0 8 0 amappl13 176 135 0 123 1 0 1 1 0 8 0 amappl12 168 1302 0 1271 2 0 2 2 0 8 0 amappl11 160 9 0 9 1 1 0 1 0 8 0 amappl10 152 67 0 52 1 0 1 1 0 8 0 amappl9 144 263 0 263 1 1 0 1 0 8 0 amappl8 136 122 0 120 1 0 1 1 0 8 0 amappl7 128 158 0 144 1 0 1 1 0 8 0 amappl6 120 164 0 162 1 0 1 1 0 8 0 amappl5 112 107 0 95 1 0 1 1 0 8 0 amappl4 104 316 0 294 1 0 1 1 0 8 0 amappl3 96 5489 0 5368 4 0 4 4 0 8 0 amappl2 88 602 0 539 2 0 2 2 0 8 0 amappl1 80 13477 0 12867 18 2 16 17 0 8 2 amappl 88 7825 0 7652 5 0 5 5 0 92 0 uvmvnodes 80 117 0 0 3 0 3 3 0 8 0 dma8192 8192 65 0 65 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 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 128 257 0 257 3 2 1 1 0 8 1 dma64 64 7 0 7 2 1 1 1 0 8 1 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 52 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1039 0 1007 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1039 0 1007 1 0 1 1 0 8 0 vmmpekpl 168 10471 0 10436 2 0 2 2 0 8 0 vmmpepl 168 74622 0 72544 106 7 99 105 0 357 2 vmsppl 488 1038 0 1007 6 1 5 5 0 8 0 rwobjpl 80 23244 0 22034 33 4 29 31 0 8 0 pdppl 4096 2085 0 2014 107 36 71 83 0 8 0 pvpl 32 18065 0 0 146 0 146 146 0 265 0 pmappl 256 1038 0 1007 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 301 0 49 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ffs2_balloc(fffffd806daff380,502f9,50,fffffd80097fd068,1,ffff80002a34aba8) at ffs2_balloc+0xa0d sys/ufs/ffs/ffs_balloc.c:614 ffs_write(ffff80002a34ac30) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd8065193e88,ffff80002a34ace0,3,fffffd80097fd068) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a241ca0,fffffd8065193e88,fffffd80097fd068,ffff80002a34adb0,ffff80002a34ad90) at ktrwriteraw+0x1be sys/kern/kern_ktrace.c:691 ktrsysret(ffff80002a241ca0,5b,0,ffff80002a34ae80) at ktrsysret+0x192 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a241ca0,5b,0,ffff80002a34ae80) at ktrsysret+0x192 sys/kern/kern_ktrace.c:209 syscall(ffff80002a34af30) at syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a34af30) at syscall+0xa51 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x780b298ef5d0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299bdff0) 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(ffffffff83a49f80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a49f80) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff83a49f80,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(989680,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 ptcwrite(606,ffff80003c3e03d0,1) at ptcwrite+0x35d sys/kern/tty_pty.c:568 spec_write(ffff80003c3e01a0) at spec_write+0x11f sys/kern/spec_vnops.c:302 VOP_WRITE(fffffd8073669360,ffff80003c3e03d0,1,fffffd80097fd068) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd806714b908,ffff80003c3e03d0,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff8000fffee020,7,ffff80003c3e03d0,0,ffff80003c3e0490) at dofilewritev+0x2bd sys/kern/sys_generic.c:384 sys_writev(ffff8000fffee020,ffff80003c3e0540,ffff80003c3e0490) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80003c3e0540) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3e0540) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc46c4b218b0, count: 1 ddb{1}> trace x86_ipi_db(ffff8000299bdff0) 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(ffffffff83a49f80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a49f80) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff83a49f80,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(989680,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 ptcwrite(606,ffff80003c3e03d0,1) at ptcwrite+0x35d sys/kern/tty_pty.c:568 spec_write(ffff80003c3e01a0) at spec_write+0x11f sys/kern/spec_vnops.c:302 VOP_WRITE(fffffd8073669360,ffff80003c3e03d0,1,fffffd80097fd068) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd806714b908,ffff80003c3e03d0,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff8000fffee020,7,ffff80003c3e03d0,0,ffff80003c3e0490) at dofilewritev+0x2bd sys/kern/sys_generic.c:384 sys_writev(ffff8000fffee020,ffff80003c3e0540,ffff80003c3e0490) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80003c3e0540) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3e0540) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc46c4b218b0, count: -14