login: panic: mtx 0xffffffff83925e70: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *152777 49970 32767 0x10 0 1 syz-executor 351201 20549 32767 0x10 0 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833eadd8) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83925e70) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83925e70) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800870f9f0) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800870f9f0) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800870f9f0) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806bb49b78,0,ffff80003c461c78,ffff80003c461c5c,0,2,906ec051e5737c29,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c461e90,ffff80003c461ec8,ffff80003c461d10,ffff80003c461cf8) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c461e90,ffff80003c461ec8,ffff80003c461e10) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806be51b60,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c462020,200000000040) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c462020) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x761da9f834a0, count: 2 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: mtx 0xffffffff83925e70: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833eadd8) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83925e70) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83925e70) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800870f9f0) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800870f9f0) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800870f9f0) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806bb49b78,0,ffff80003c461c78,ffff80003c461c5c,0,2,906ec051e5737c29,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c461e90,ffff80003c461ec8,ffff80003c461d10,ffff80003c461cf8) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c461e90,ffff80003c461ec8,ffff80003c461e10) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806be51b60,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c462020,200000000040) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c462020) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x761da9f834a0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c4619c0 rbx 0xffff8000299dedcf rdx 0 rcx 0xffff80002a278d68 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x15f7fa9078a47c7e r11 0xb9c36a3113367a87 r12 0xffff8000299debd0 r13 0 r14 0 r15 0x1 rip 0xffffffff826ffe55 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c4619b0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=152777 pid=49970 tcnt=4 stat=onproc flags process=10 proc=0 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c020a98,0xffff80002a279818 process=0xffff8000fffed320 user=0xffff80003c45d000, vmspace=0xfffffd806be51b60 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *49970 152777 26117 32767 7 0x10 syz-executor 49970 305085 26117 32767 3 0x4000090 fsleep syz-executor 49970 379893 26117 32767 2 0x4000010 syz-executor 49970 229069 26117 32767 2 0x4000010 syz-executor 12755 305889 32718 32767 2 0x10 syz-executor 12755 62095 32718 32767 3 0x4000090 ttyin syz-executor 12755 143197 32718 32767 3 0x4000090 pipewr syz-executor 64296 366591 3980 32767 2 0xc90 syz-executor 64296 13239 3980 32767 3 0x4000090 sbwait syz-executor 64296 330971 3980 32767 3 0x4000090 fsleep syz-executor 64296 399562 3980 32767 3 0x4000090 fsleep syz-executor 52845 278843 53105 32767 3 0x90 nanoslp syz-executor 52845 203796 53105 32767 3 0x4000090 ttyin syz-executor 52845 328610 53105 32767 3 0x4000090 fsleep syz-executor 48545 109848 84289 0 3 0x82 sbwait sshd-session 56519 448442 0 0 3 0x14200 bored sosplice 26117 308377 58199 32767 3 0x90 nanoslp syz-executor 53105 265134 70166 32767 3 0x90 nanoslp syz-executor 70652 204406 68509 32767 3 0x90 nanoslp syz-executor 3980 101338 54686 32767 3 0x90 nanoslp syz-executor 20549 351201 23930 32767 7 0x10 syz-executor 32718 76953 86073 32767 2 0xc90 syz-executor 26679 121086 46565 32767 3 0x90 wait syz-executor 61 362549 82676 32767 2 0xc90 syz-executor 58199 106829 28986 0 3 0x82 wait syz-executor 86073 307102 28986 0 3 0x82 wait syz-executor 46565 308375 28986 0 3 0x82 wait syz-executor 70166 248811 28986 0 3 0x82 wait syz-executor 54686 241750 28986 0 3 0x82 wait syz-executor 68509 172491 28986 0 3 0x82 wait syz-executor 82676 232868 28986 0 3 0x82 wait syz-executor 23930 383914 28986 0 3 0x82 wait syz-executor 28986 374997 25662 0 3 0x82 kqread syz-executor 25662 190961 44361 0 3 0x10008a sigsusp ksh 44361 427304 42336 0 3 0x98 kqread sshd-session 42336 370254 84289 0 3 0x92 kqread sshd-session 66783 251042 1 0 3 0x100083 ttyin getty 84289 413344 1 0 3 0x88 kqread sshd 20687 401035 76019 73 3 0x1100090 kqread syslogd 76019 54986 1 0 3 0x100082 sbwait syslogd 3939 103467 1 0 3 0x100080 kqread resolvd 29205 212137 92139 77 3 0x100092 kqread dhcpleased 64573 104830 92139 77 3 0x100092 kqread dhcpleased 92139 424965 1 0 3 0x80 kqread dhcpleased 87020 177983 0 0 3 0x14200 bored smr 81300 130338 0 0 2 0x14200 zerothread 48240 492378 0 0 3 0x14200 aiodoned aiodoned 40513 364801 0 0 3 0x14200 syncer update 67100 246409 0 0 3 0x14200 cleaner cleaner 28795 339069 0 0 3 0x14200 reaper reaper 24732 362653 0 0 3 0x14200 pgdaemon pagedaemon 93482 118449 0 0 3 0x14200 bored viomb 2317 347482 0 0 3 0x40014200 acpi0 acpi0 92912 383254 0 0 3 0x40014200 idle1 32900 148981 0 0 3 0x14200 bored softnet3 8140 366387 0 0 3 0x14200 bored softnet2 88235 335396 0 0 3 0x14200 bored softnet1 17787 189745 0 0 3 0x14200 bored softnet0 91220 56582 0 0 3 0x14200 bored systqmp 83905 21381 0 0 3 0x14200 bored systq 29742 386639 0 0 3 0x14200 tmoslp softclockmp 93871 46976 0 0 3 0x40014200 tmoslp softclock 79919 349948 0 0 3 0x40014200 idle0 1 417291 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83925e80) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 49970 (syz-executor) thread 0xffff80002a278d68 (152777) exclusive rwlock uobjlk r = 0 (0xfffffd806bfab928) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 uvn_io+0x667 sys/uvm/uvm_vnode.c:1297 #3 uvn_get+0x31d sys/uvm/uvm_vnode.c:1102 #4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83925e80) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 49970 (syz-executor) thread 0xffff80002a2792b8 (379893) exclusive rrwlock inode r = 0 (0xfffffd806e0c7bf0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 sys_ftruncate+0x1c4 sys/kern/vfs_syscalls.c:2912 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10212 10958K 10965K 166960K 11291 0 pcb 17 12K 12K 166960K 17 0 rtable 236 6K 6K 166960K 422 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 4 1K 3K 166960K 5 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 33 0 iov 1 12K 16K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1452 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 22 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 25 93K 121K 166960K 409 0 sigio 0 0K 0K 166960K 6 0 proc 58 79K 127K 166960K 498 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 146 0 in_multi 99 7K 7K 166960K 118 0 ether_multi 1 0K 0K 166960K 2 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 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 431 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 267 169K 183K 166960K 5450 0 UVM aobj 12 3K 3K 166960K 13 0 pinsyscall 48 96K 111K 166960K 1459 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 24 0 NDP 11 0K 2K 166960K 27 0 temp 56 8687K 8751K 166960K 4911 0 kqueue 14 22K 27K 166960K 74 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 56 0 53 1 0 1 1 0 8 0 rtentry 176 112 0 1 6 0 6 6 0 8 0 unpcb 144 260 0 241 2 0 2 2 0 8 1 syncache 336 14 0 14 1 0 1 1 0 8 1 tcpqe 32 3 0 3 1 0 1 1 0 8 1 tcpcb 808 202 0 193 4 0 4 4 0 8 2 arp 128 18 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 384 482 0 468 8 0 8 8 0 8 5 nd6 144 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 454 0 0 29 0 29 29 0 8 0 art_table 32 455 0 0 4 0 4 4 0 8 0 art_node 16 111 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 45 0 5 1 0 1 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 10 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2031 0 521 95 0 95 95 0 8 0 ffsino 288 2031 0 521 108 0 108 108 0 8 0 nchpl 144 2618 0 938 63 0 63 63 0 8 0 uvmvnodes 80 2112 0 0 44 0 44 44 0 8 0 vnodes 216 2112 0 0 118 0 118 118 0 8 0 namei 1024 8305 0 8305 1 0 1 1 0 8 1 percpumem 16 47 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 8417 0 8417 10 2 8 8 1 8 8 plimitpl 152 135 0 110 2 0 2 2 0 8 1 sigapl 424 693 0 636 8 0 8 8 0 8 1 futexpl 64 4092 0 4088 1 0 1 1 0 8 0 knotepl 120 315 0 0 10 0 10 10 0 8 0 kqueuepl 224 94 0 84 1 0 1 1 0 8 0 pipepl 336 136 0 107 3 0 3 3 0 8 0 fdescpl 520 674 0 636 3 0 3 3 0 8 0 filepl 160 3431 0 3200 14 0 14 14 0 8 2 lockfpl 104 76 0 73 1 0 1 1 0 8 0 lockfspl 48 31 0 28 1 0 1 1 0 8 0 sessionpl 144 30 0 13 1 0 1 1 0 8 0 pgrppl 48 43 0 18 1 0 1 1 0 8 0 ucredpl 104 777 0 758 1 0 1 1 0 8 0 zombiepl 144 639 0 636 1 0 1 1 0 8 0 processpl 1216 693 0 636 5 0 5 5 0 8 0 procpl 680 1180 0 1113 7 0 7 7 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 728 801 0 766 10 0 10 10 0 8 5 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 16 0 16 16 0 8 0 mcl2k 2048 41 0 0 6 0 6 6 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 364 0 0 23 0 23 23 0 8 0 bufpl 280 2783 0 117 191 0 191 191 0 8 0 anonpl 32 7764 0 0 63 0 63 63 0 246 0 amapchunkpl 152 16449 0 15879 32 0 32 32 0 158 6 amappl16 200 2387 0 2357 19 6 13 15 0 8 8 amappl15 192 39 0 39 2 1 1 1 0 8 1 amappl14 184 117 0 106 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 1282 0 1244 2 0 2 2 0 8 0 amappl11 160 54 0 43 1 0 1 1 0 8 0 amappl10 152 25 0 25 1 1 0 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 100 0 89 1 0 1 1 0 8 0 amappl6 120 180 0 176 1 0 1 1 0 8 0 amappl5 112 114 0 108 1 0 1 1 0 8 0 amappl4 104 312 0 297 1 0 1 1 0 8 0 amappl3 96 3031 0 2897 4 0 4 4 0 8 0 amappl2 88 679 0 619 2 0 2 2 0 8 0 amappl1 80 10993 0 10339 16 0 16 16 0 8 0 amappl 88 4702 0 4507 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 12 0 1 1 0 1 1 0 8 0 uaddrrnd 24 674 0 636 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 674 0 636 1 0 1 1 0 8 0 vmmpekpl 168 7813 0 7778 2 0 2 2 0 8 0 vmmpepl 168 51294 0 49041 107 0 107 107 0 357 0 vmsppl 480 673 0 636 6 0 6 6 0 8 0 rwobjpl 72 19188 0 16108 58 0 58 58 0 8 0 pdppl 4096 1356 0 1272 118 30 88 96 0 8 4 pvpl 32 15802 0 0 128 0 128 128 0 265 0 pmappl 256 673 0 636 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 424 0 32 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83882ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:149 getblk(fffffd8009ee76c0,360,4000,0,ffffffffffffffff) at getblk+0xa7 sys/kern/vfs_bio.c:-1 bread(fffffd8009ee76c0,360,4000,ffff8000383fc248) at bread+0x47 bio_doread sys/kern/vfs_bio.c:422 [inline] bread(fffffd8009ee76c0,360,4000,ffff8000383fc248) at bread+0x47 sys/kern/vfs_bio.c:467 ffs_update(fffffd806e0c75b0,0) at ffs_update+0x198 sys/ufs/ffs/ffs_inode.c:91 ufs_inactive(ffff8000383fc308) at ufs_inactive+0x2e5 sys/ufs/ufs/ufs_inode.c:95 VOP_INACTIVE(fffffd805f289798,ffff80002a279ab0) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:498 vput(fffffd805f289798) at vput+0xe5 sys/kern/vfs_subr.c:796 vn_closefile(fffffd806b1d0870,ffff80002a279ab0) at vn_closefile+0x13f sys/kern/vfs_vnops.c:616 fdrop(fffffd806b1d0870,ffff80002a279ab0) at fdrop+0x126 sys/kern/kern_descrip.c:1265 closef(fffffd806b1d0870,ffff80002a279ab0) at closef+0x192 sys/kern/kern_descrip.c:1249 syscall(ffff8000383fc580) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000383fc580) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 end trace frame: 0xffff8000383fc600, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83882ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:149 getblk(fffffd8009ee76c0,360,4000,0,ffffffffffffffff) at getblk+0xa7 sys/kern/vfs_bio.c:-1 bread(fffffd8009ee76c0,360,4000,ffff8000383fc248) at bread+0x47 bio_doread sys/kern/vfs_bio.c:422 [inline] bread(fffffd8009ee76c0,360,4000,ffff8000383fc248) at bread+0x47 sys/kern/vfs_bio.c:467 ffs_update(fffffd806e0c75b0,0) at ffs_update+0x198 sys/ufs/ffs/ffs_inode.c:91 ufs_inactive(ffff8000383fc308) at ufs_inactive+0x2e5 sys/ufs/ufs/ufs_inode.c:95 VOP_INACTIVE(fffffd805f289798,ffff80002a279ab0) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:498 vput(fffffd805f289798) at vput+0xe5 sys/kern/vfs_subr.c:796 vn_closefile(fffffd806b1d0870,ffff80002a279ab0) at vn_closefile+0x13f sys/kern/vfs_vnops.c:616 fdrop(fffffd806b1d0870,ffff80002a279ab0) at fdrop+0x126 sys/kern/kern_descrip.c:1265 closef(fffffd806b1d0870,ffff80002a279ab0) at closef+0x192 sys/kern/kern_descrip.c:1249 syscall(ffff8000383fc580) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000383fc580) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7930dc5c2030, count: -15 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833eadd8) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83925e70) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83925e70) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800870f9f0) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800870f9f0) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800870f9f0) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806bb49b78,0,ffff80003c461c78,ffff80003c461c5c,0,2,906ec051e5737c29,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c461e90,ffff80003c461ec8,ffff80003c461d10,ffff80003c461cf8) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c461e90,ffff80003c461ec8,ffff80003c461e10) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806be51b60,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c462020,200000000040) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c462020) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x761da9f834a0, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833eadd8) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83925e70) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83925e70) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800870f9f0) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800870f9f0) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800870f9f0) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806bb49b78,0,ffff80003c461c78,ffff80003c461c5c,0,2,906ec051e5737c29,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c461e90,ffff80003c461ec8,ffff80003c461d10,ffff80003c461cf8) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c461e90,ffff80003c461ec8,ffff80003c461e10) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806be51b60,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c462020,200000000040) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c462020) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x761da9f834a0, count: -13