panic: pool_p_free: rttmr free list modified: page 0xfffffd805edde000; item addr 0xfffffd805eddee58; offset 0x10=0x83924510 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 335134 46631 0 0 0x4000000 0 syz-executor *476300 93379 0 0x14000 0x200 1 systqmp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83367070) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_p_free(ffffffff8399f5e0,fffffd805eddef90) at pool_p_free+0x2d1 sys/kern/subr_pool.c:986 pool_gc_pages(0) at pool_gc_pages+0x357 sys/kern/subr_pool.c:1587 taskq_thread(ffffffff837e2410) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: 10 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: pool_p_free: rttmr free list modified: page 0xfffffd805edde000; item addr 0xfffffd805eddee58; offset 0x10=0x83924510 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83367070) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_p_free(ffffffff8399f5e0,fffffd805eddef90) at pool_p_free+0x2d1 sys/kern/subr_pool.c:986 pool_gc_pages(0) at pool_gc_pages+0x357 sys/kern/subr_pool.c:1587 taskq_thread(ffffffff837e2410) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: -5 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a219f00 rbx 0xffff8000299eeddf rdx 0 rcx 0xffff8000ffffe000 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe8246b831dd287a3 r11 0xa7db65856a0f2096 r12 0xffff8000299eebe0 r13 0 r14 0 r15 0x1 rip 0xffffffff820653b5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a219ef0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (systqmp) tid=476300 pid=93379 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffe298,0xffff8000ffffe540 process=0xffff8000ffff89c0 user=0xffff80002a215000, vmspace=0xffffffff838f2a68 estcpu=0, cpticks=3, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46631 40334 35152 0 2 0 syz-executor 46631 335134 35152 0 7 0x4000000 syz-executor 417 370211 46088 60929 2 0x10 syz-executor 417 307579 46088 60929 3 0x4000090 sbwait syz-executor 72421 214409 67302 0 2 0xc80 syz-executor 72421 487836 67302 0 3 0x4000080 lockf syz-executor 72421 348348 67302 0 3 0x4000080 fsleep syz-executor 72421 110067 67302 0 3 0x4000080 fsleep syz-executor 21290 283959 79558 0 2 0xc80 syz-executor 21290 506753 79558 0 3 0x4000080 netacc syz-executor 21290 304219 79558 0 3 0x4000080 fsleep syz-executor 77669 293894 1 0 3 0x100083 ttyin getty 35152 252977 28658 0 2 0xc82 syz-executor 38845 262104 21413 0 3 0x82 sbwait sshd-session 84469 44430 28658 0 3 0x82 wait syz-executor 36823 519419 0 0 3 0x14200 bored sosplice 7688 486905 28658 0 2 0xc82 syz-executor 67302 75391 28658 0 2 0xc82 syz-executor 79558 222867 28658 0 2 0xc82 syz-executor 41313 185655 28658 0 2 0xc82 syz-executor 4927 203981 28658 0 3 0x82 wait syz-executor 46088 28719 28658 0 2 0xc82 syz-executor 28658 146695 49387 0 3 0x82 kqread syz-executor 49387 50611 46542 0 3 0x10008a sigsusp ksh 46542 32956 49380 0 3 0x98 kqread sshd-session 49380 326916 21413 0 3 0x92 kqread sshd-session 21413 231816 1 0 3 0x88 kqread sshd 60274 289013 88130 74 3 0x1100092 bpf pflogd 88130 238662 1 0 3 0x80 sbwait pflogd 22341 22845 12680 73 3 0x1100090 kqread syslogd 12680 512169 1 0 3 0x100082 sbwait syslogd 59547 207514 1 0 3 0x100080 kqread resolvd 28974 502605 41960 77 3 0x100092 kqread dhcpleased 77935 436035 41960 77 3 0x100092 kqread dhcpleased 41960 453912 1 0 3 0x80 kqread dhcpleased 6546 366954 0 0 3 0x14200 bored smr 44321 165126 0 0 3 0x14200 pgzero zerothread 61385 184150 0 0 3 0x14200 aiodoned aiodoned 83265 366823 0 0 3 0x14200 syncer update 50623 30389 0 0 3 0x14200 cleaner cleaner 3978 257947 0 0 3 0x14200 reaper reaper 33942 377054 0 0 3 0x14200 pgdaemon pagedaemon 12925 81155 0 0 3 0x14200 bored viomb 23261 65116 0 0 3 0x40014200 acpi0 acpi0 28812 447925 0 0 3 0x40014200 idle1 68024 386195 0 0 3 0x14200 bored softnet7 14537 250183 0 0 3 0x14200 bored softnet6 16956 501776 0 0 3 0x14200 bored softnet5 54711 263301 0 0 3 0x14200 bored softnet4 66167 313089 0 0 3 0x14200 bored softnet3 85840 129634 0 0 3 0x14200 bored softnet2 23315 493450 0 0 3 0x14200 bored softnet1 5601 386067 0 0 3 0x14200 bored softnet0 *93379 476300 0 0 7 0x14200 systqmp 9271 387038 0 0 3 0x14200 bored systq 70999 86244 0 0 3 0x14200 tmoslp softclockmp 55072 288116 0 0 2 0x40014200 softclock 34517 378313 0 0 3 0x40014200 idle0 1 494267 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &sched_lock r = 0 (0xffffffff83871f10) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 endtsleep+0x39 sys/kern/kern_synch.c:538 #4 timeout_run+0x13d sys/kern/kern_timeout.c:698 #5 softclock_process_tick_timeout+0x232 sys/kern/kern_timeout.c:756 #6 softclock+0x152 sys/kern/kern_timeout.c:788 #7 softintr_dispatch+0x13b sys/kern/kern_softintr.c:84 #8 dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 #9 Xsoftclock+0x27 #10 __sanitizer_cov_trace_pc+0x95 kd_claim sys/dev/kcov.c:632 [inline] #10 __sanitizer_cov_trace_pc+0x95 sys/dev/kcov.c:157 #11 _kernel_lock+0x5f sys/kern/kern_lock.c:85 #12 scsi_iopool_run+0xd5 scsi_iopool_get sys/scsi/scsi_base.c:260 [inline] #12 scsi_iopool_run+0xd5 sys/scsi/scsi_base.c:424 #13 scsi_xsh_runqueue+0x39d sys/scsi/scsi_base.c:599 #14 scsi_xsh_add+0x10e sys/scsi/scsi_base.c:538 #15 sdstrategy+0x21b sys/scsi/sd.c:567 #16 spec_strategy+0x45 sys/kern/spec_vnops.c:448 #17 VOP_STRATEGY+0xca sys/kern/vfs_vops.c:639 #18 ufs_strategy+0x1f6 sys/ufs/ufs/ufs_vnops.c:-1 shared mutex timeout r = 0 (0xffffffff837efa00) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 timeout_run+0x115 sys/kern/kern_timeout.c:694 #2 softclock_process_tick_timeout+0x232 sys/kern/kern_timeout.c:756 #3 softclock+0x152 sys/kern/kern_timeout.c:788 #4 softintr_dispatch+0x13b sys/kern/kern_softintr.c:84 #5 dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 #6 Xsoftclock+0x27 #7 __sanitizer_cov_trace_pc+0x95 kd_claim sys/dev/kcov.c:632 [inline] #7 __sanitizer_cov_trace_pc+0x95 sys/dev/kcov.c:157 #8 _kernel_lock+0x5f sys/kern/kern_lock.c:85 #9 scsi_iopool_run+0xd5 scsi_iopool_get sys/scsi/scsi_base.c:260 [inline] #9 scsi_iopool_run+0xd5 sys/scsi/scsi_base.c:424 #10 scsi_xsh_runqueue+0x39d sys/scsi/scsi_base.c:599 #11 scsi_xsh_add+0x10e sys/scsi/scsi_base.c:538 #12 sdstrategy+0x21b sys/scsi/sd.c:567 #13 spec_strategy+0x45 sys/kern/spec_vnops.c:448 #14 VOP_STRATEGY+0xca sys/kern/vfs_vops.c:639 #15 ufs_strategy+0x1f6 sys/ufs/ufs/ufs_vnops.c:-1 #16 VOP_STRATEGY+0xca sys/kern/vfs_vops.c:639 #17 bwrite+0x298 sys/kern/vfs_bio.c:745 #18 ffs2_balloc+0x18b4 sys/ufs/ffs/ffs_balloc.c:701 Process 46631 (syz-executor) thread 0xffff80003c44c558 (335134) Process 93379 (systqmp) thread 0xffff8000ffffe000 (476300) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10298 11076K 12795K 166960K 13851 0 pcb 18 18K 20K 166960K 697 0 rtable 140 10K 10K 166960K 606 0 pf 52 20K 67487K 166960K 352 0 ifaddr 34 5K 8K 166960K 210 0 ifgroup 77 3K 3K 166960K 378 0 sysctl 4 1K 9K 166960K 13 0 counters 80 38K 38K 166960K 546 0 ioctlops 0 0K 6K 166960K 2124 0 iov 0 0K 48K 166960K 156 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1470 92K 93K 166960K 3300 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 23 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 163 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 2326 0 sigio 1 0K 0K 166960K 104 0 proc 73 115K 164K 166960K 884 0 subproc 72 4K 4K 166960K 102 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 289 0 in_multi 36 2K 7K 166960K 228 0 ether_multi 1 0K 0K 166960K 23 0 mrt 1 0K 0K 166960K 17 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 686 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 274 189K 203K 166960K 22710 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 45 90K 101K 166960K 3478 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 168 0 NDP 18 0K 1K 166960K 156 0 temp 77 8652K 8724K 166960K 119589 0 kqueue 13 20K 34K 166960K 489 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 120 398 0 395 5 4 1 3 0 8 0 rtentry 176 202 0 162 5 1 4 5 0 8 0 unpcb 144 1937 0 1916 20 14 6 6 0 8 5 syncache 336 11 0 11 2 2 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 736 825 0 816 15 11 4 7 0 8 3 arp 128 24 0 16 1 0 1 1 0 8 0 inpcb 328 3080 0 3066 35 28 7 10 0 8 5 nd6 144 40 0 32 1 0 1 1 0 8 0 pkpcb 40 22 0 22 5 4 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1192 210 0 207 3 2 1 1 0 8 0 pppxif 1504 17 0 17 5 4 1 1 0 8 1 pfstscr 40 3 0 1 1 0 1 1 0 8 0 pffrag 232 19 0 9 1 0 1 1 0 482 0 pffrnode 88 14 0 5 1 0 1 1 0 8 0 pffrent 40 36 0 26 1 0 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 75 0 38 1 0 1 1 0 8 0 pfstkey 128 79 0 40 2 0 2 2 0 8 0 pfstate 384 75 0 39 5 0 5 5 0 8 0 pfrule 1344 27 0 21 2 1 1 2 0 8 0 rttmr 136 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 891 0 688 33 17 16 32 0 8 0 art_table 40 896 0 688 6 1 5 6 0 8 0 art_node 32 197 0 165 1 0 1 1 0 8 0 sysvmsgpl 40 27 0 24 2 1 1 1 0 8 0 semapl 112 159 0 149 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 5969 0 4456 96 0 96 96 0 8 0 ffsino 296 5969 0 4456 118 0 118 118 0 8 0 nchpl 144 9273 0 8721 64 31 33 64 0 8 8 rtmask 32 22 0 22 5 4 1 1 0 8 1 uvmvnodes 80 6896 0 0 141 0 141 141 0 8 0 vnodes 216 6896 0 0 384 0 384 384 0 8 0 namei 1024 31861 0 31861 1 0 1 1 0 8 1 percpumem 16 288 0 233 1 0 1 1 0 8 0 kstatmem 264 272 0 230 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 16 0 16 4 3 1 1 0 8 1 scxspl 216 57719 0 57718 14 11 3 8 1 8 2 plimitpl 152 937 0 918 1 0 1 1 0 8 0 sigapl 424 2622 0 2566 9 1 8 9 0 8 0 knotepl 120 880 0 0 26 0 26 26 0 8 0 kqueuepl 224 1007 0 997 11 6 5 5 0 8 4 pipepl 344 451 0 423 9 6 3 9 0 8 0 fdescpl 528 2573 0 2540 3 0 3 3 0 8 0 filepl 160 19098 0 18756 31 12 19 19 0 8 4 lockfpl 104 1006 0 1002 1 0 1 1 0 8 0 lockfspl 48 424 0 421 1 0 1 1 0 8 0 sessionpl 144 31 0 21 1 0 1 1 0 8 0 pgrppl 48 80 0 62 1 0 1 1 0 8 0 ucredpl 104 3316 0 3301 1 0 1 1 0 8 0 zombiepl 144 3369 0 3365 2 1 1 1 0 8 0 processpl 1248 2622 0 2566 7 0 7 7 0 8 0 procpl 664 6417 0 6354 9 0 9 9 0 8 0 sosppl 168 9 0 9 4 3 1 1 0 8 1 sockpl 752 5504 0 5466 68 55 13 20 0 8 8 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 136 0 0 17 0 17 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 0 mtagpl 96 13 0 0 1 0 1 1 0 8 0 mbufpl 256 1168 0 0 71 0 71 71 0 8 0 bufpl 280 23163 0 17020 440 0 440 440 0 8 0 anonpl 32 19992 0 0 161 0 161 161 0 246 0 amapchunkpl 152 77596 0 76984 53 24 29 37 0 158 2 amappl16 200 7340 0 7289 91 78 13 50 0 8 5 amappl15 192 36 0 36 1 1 0 1 0 8 0 amappl14 184 167 0 154 1 0 1 1 0 8 0 amappl13 176 7 0 7 2 2 0 1 0 8 0 amappl12 168 3266 0 3233 3 1 2 2 0 8 0 amappl11 160 53 0 38 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 1 0 1 0 8 0 amappl9 144 258 0 258 2 2 0 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 114 0 100 1 0 1 1 0 8 0 amappl6 120 204 0 199 1 0 1 1 0 8 0 amappl5 112 132 0 121 1 0 1 1 0 8 0 amappl4 104 329 0 309 1 0 1 1 0 8 0 amappl3 96 16122 0 15997 4 0 4 4 0 8 0 amappl2 88 725 0 656 2 0 2 2 0 8 0 amappl1 80 18726 0 18021 17 0 17 17 0 8 0 amappl 88 21576 0 21384 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 3 0 3 2 1 1 1 0 8 1 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 258 0 258 4 3 1 1 0 8 1 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 21 0 20 1 0 1 1 0 8 0 aobjpl 72 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2573 0 2540 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2573 0 2540 1 0 1 1 0 8 0 vmmpekpl 168 20806 0 20753 3 0 3 3 0 8 0 vmmpepl 168 165765 0 163492 168 34 134 138 0 357 26 vmsppl 488 2572 0 2540 5 0 5 5 0 8 0 rwobjpl 80 49149 0 41151 164 0 164 164 0 8 0 pdppl 4096 5154 0 5080 116 42 74 84 0 8 0 pvpl 32 30023 0 0 242 0 242 242 0 265 0 pmappl 256 2572 0 2540 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 378 0 78 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837a8ff0) 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+0x44 sys/dev/kcov.c:159 __mp_lock(ffffffff83914398) at __mp_lock+0xe1 read_rflags sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:212 [inline] __mp_lock(ffffffff83914398) at __mp_lock+0xe1 intr_disable sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:233 [inline] __mp_lock(ffffffff83914398) at __mp_lock+0xe1 sys/kern/kern_lock.c:160 __mp_acquire_count(ffffffff83914398,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 tsleep_nsec(fffffd807323d008,11,ffffffff8341ddcd,ffffffffffffffff) at tsleep_nsec+0x23d sys/kern/kern_synch.c:-1 biowait(fffffd807323d008) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd807323d008) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs2_balloc(fffffd806e6e1190,7c000,4000,fffffd80097fb478,2,ffff80003a821738) at ffs2_balloc+0x18b4 sys/ufs/ffs/ffs_balloc.c:701 ffs_write(ffff80003a8217c0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805d0d8cd8,ffff80003a821978,7,fffffd80097fb478) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd805eaf9378,ffff80003a821978,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003c44c558,3,ffff80003a821978,0,ffff80003a821a30) at dofilewritev+0x242 sys/kern/sys_generic.c:380 end trace frame: 0xffff80003a821a00, count: 0 ddb{0}> trace x86_ipi_db(ffffffff837a8ff0) 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+0x44 sys/dev/kcov.c:159 __mp_lock(ffffffff83914398) at __mp_lock+0xe1 read_rflags sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:212 [inline] __mp_lock(ffffffff83914398) at __mp_lock+0xe1 intr_disable sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:233 [inline] __mp_lock(ffffffff83914398) at __mp_lock+0xe1 sys/kern/kern_lock.c:160 __mp_acquire_count(ffffffff83914398,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 tsleep_nsec(fffffd807323d008,11,ffffffff8341ddcd,ffffffffffffffff) at tsleep_nsec+0x23d sys/kern/kern_synch.c:-1 biowait(fffffd807323d008) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd807323d008) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs2_balloc(fffffd806e6e1190,7c000,4000,fffffd80097fb478,2,ffff80003a821738) at ffs2_balloc+0x18b4 sys/ufs/ffs/ffs_balloc.c:701 ffs_write(ffff80003a8217c0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd805d0d8cd8,ffff80003a821978,7,fffffd80097fb478) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd805eaf9378,ffff80003a821978,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003c44c558,3,ffff80003a821978,0,ffff80003a821a30) at dofilewritev+0x242 sys/kern/sys_generic.c:380 sys_write(ffff80003c44c558,ffff80003a821ae0,ffff80003a821a30) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80003a821ae0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a821ae0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81b0980c00, count: -17 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(ffffffff83367070) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_p_free(ffffffff8399f5e0,fffffd805eddef90) at pool_p_free+0x2d1 sys/kern/subr_pool.c:986 pool_gc_pages(0) at pool_gc_pages+0x357 sys/kern/subr_pool.c:1587 taskq_thread(ffffffff837e2410) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: 10 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83367070) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_p_free(ffffffff8399f5e0,fffffd805eddef90) at pool_p_free+0x2d1 sys/kern/subr_pool.c:986 pool_gc_pages(0) at pool_gc_pages+0x357 sys/kern/subr_pool.c:1587 taskq_thread(ffffffff837e2410) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: -5