witness: lock order reversal: 1st 0xffffffff839f8580 &sched_lock (&sched_lock) 2nd 0xffff8000299dee00 &cq->cq_mtx (&cq->cq_mtx) lock order [1] &sched_lock (&sched_lock) -> [2] &cq->cq_mtx (&cq->cq_mtx) #0 mtx_enter+0x4a sys/kern/kern_lock.c:257 #1 clockintr_cancel+0x2f sys/kern/kern_clockintr.c:323 #2 mi_switch+0x172 x86_atomic_clearbits_u32 machine/atomic.h:-1 [inline] #2 mi_switch+0x172 sys/kern/sched_bsd.c:374 #3 ast+0x165 mi_ast sys/sys/syscall_mi.h:252 [inline] #3 ast+0x165 sys/arch/amd64/amd64/trap.c:543 #4 intr_user_exit+0x3c lock order [2] &cq->cq_mtx (&cq->cq_mtx) -> [1] &sched_lock (&sched_lock) #0 mtx_enter+0x4a sys/kern/kern_lock.c:257 #1 sleep_setup+0xc6 sys/kern/kern_synch.c:302 #2 msleep_nsec+0x119 sys/kern/kern_synch.c:217 #3 dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 #4 dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #4 dtclose+0x105 sys/dev/dt/dt_dev.c:232 #5 spec_close+0x45f sys/kern/spec_vnops.c:-1 #6 VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 #7 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #7 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #8 fdrop+0x126 sys/kern/kern_descrip.c:1267 #9 closef+0x192 sys/kern/kern_descrip.c:1251 #10 fdfree+0x116 sys/kern/kern_descrip.c:1182 #11 exit1+0x59c sys/kern/kern_exit.c:215 #12 sys_exit+0x1a sys/kern/kern_exit.c:-1 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(ffff8000299dee00,9,0) at witness_checkorder+0x10fb sys/kern/subr_witness.c:-1 mtx_enter(ffff8000299dedf0) at mtx_enter+0x4a sys/kern/kern_lock.c:257 clockintr_cancel(ffff8000299de2f8) at clockintr_cancel+0x2f sys/kern/kern_clockintr.c:323 mi_switch() at mi_switch+0x172 x86_atomic_clearbits_u32 machine/atomic.h:-1 [inline] mi_switch() at mi_switch+0x172 sys/kern/sched_bsd.c:374 ast(ffff80003c427db0) at ast+0x165 mi_ast sys/sys/syscall_mi.h:252 [inline] ast(ffff80003c427db0) at ast+0x165 sys/arch/amd64/amd64/trap.c:543 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x70ba05b8db90, count: -7 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c427bd0 rbx 0xfffffd800473ec48 rdx 0 rcx 0xffff800031c7f9d8 rax 0xffff8000299ddff0 r8 0xffff80003c427ab0 r9 0x8080808080808080 r10 0xaa7685a789caa619 r11 0x8b0406ddcdb4a540 r12 0 r13 0xfffffd8003f50dc0 r14 0x3 r15 0xffffffff rip 0xffffffff81bd4c95 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c427bc0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=442605 pid=6253 tcnt=3 stat=run flags process=4000000 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0x0, list=0xffff800031c7ef98,0xffff80003c416d08 process=0xffff800031c82bc0 user=0xffff80003c422000, vmspace=0xfffffd806d368990 estcpu=36, cpticks=2, pctcpu=0.0, user=1, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 75068 270414 73749 0 2 0 syz-executor 75068 388897 73749 0 3 0x4000080 fsleep syz-executor * 6253 442605 60089 0 2 0x4000000 syz-executor 6253 226358 60089 0 3 0x4000080 kqsel syz-executor 6253 493143 60089 0 2 0x4000000 syz-executor 97384 421531 98844 0 2 0x10 syz-executor 97384 403792 98844 0 3 0x4000010 smrbar syz-executor 97384 491115 98844 0 7 0x4000010 syz-executor 50698 241995 49844 60929 3 0x90 nanoslp syz-executor 50698 422343 49844 60929 3 0x4000090 fsleep syz-executor 50698 370340 49844 60929 3 0x4000090 fsleep syz-executor 53394 91049 42062 0 3 0x80 nanoslp syz-executor 53394 244803 42062 0 3 0x4000080 kqread syz-executor 53394 55661 42062 0 3 0x4000080 fsleep syz-executor 29295 435313 56478 0 3 0x80 nanoslp syz-executor 29295 136008 56478 0 3 0x4000080 kqsel syz-executor 29295 296462 56478 0 3 0x4000080 fsleep syz-executor 60089 90336 12212 0 3 0x82 nanoslp syz-executor 77410 408490 1 0 3 0x100083 ttyin getty 98844 7485 12212 0 3 0x82 nanoslp syz-executor 70801 84779 0 0 3 0x14280 nfsidl nfsio 70306 350818 0 0 3 0x14280 nfsidl nfsio 69471 459627 0 0 3 0x14280 nfsidl nfsio 63413 152677 0 0 3 0x14280 nfsidl nfsio 58292 27529 0 0 3 0x14280 nfsidl nfsio 8794 129468 0 0 3 0x14280 nfsidl nfsio 28662 357643 0 0 3 0x14280 nfsidl nfsio 32004 502832 0 0 3 0x14280 nfsidl nfsio 30090 445926 0 0 3 0x14280 nfsidl nfsio 43399 499675 0 0 3 0x14280 nfsidl nfsio 96001 93020 0 0 3 0x14280 nfsidl nfsio 6789 173711 0 0 3 0x14280 nfsidl nfsio 25398 432090 0 0 3 0x14280 nfsidl nfsio 34023 335175 0 0 3 0x14280 nfsidl nfsio 15290 106702 0 0 3 0x14280 nfsidl nfsio 6875 331112 0 0 3 0x14280 nfsidl nfsio 52841 295359 0 0 3 0x14280 nfsidl nfsio 34121 309808 0 0 3 0x14280 nfsidl nfsio 5593 171240 0 0 3 0x14280 nfsidl nfsio 21367 149562 0 0 3 0x14280 nfsidl nfsio 49844 189441 12212 0 3 0x82 nanoslp syz-executor 78720 223978 0 0 3 0x14200 bored sosplice 73749 52431 12212 0 3 0x82 nanoslp syz-executor 56478 142225 12212 0 3 0x82 nanoslp syz-executor 64230 141652 12212 0 3 0x82 wait syz-executor 42062 146848 12212 0 3 0x82 nanoslp syz-executor 20356 142887 12212 0 2 0x2 syz-executor 12212 206101 4779 0 3 0x82 kqread syz-executor 4779 33565 89064 0 3 0x10008a sigsusp ksh 89064 479842 83250 0 3 0x98 kqread sshd-session 83250 495534 71570 0 3 0x92 kqread sshd-session 71570 210236 1 0 3 0x88 kqread sshd 76684 45266 34048 74 3 0x1100092 bpf pflogd 34048 390215 1 0 3 0x80 sbwait pflogd 73805 109613 33205 73 3 0x1100090 kqread syslogd 33205 224357 1 0 3 0x100082 sbwait syslogd 3761 293589 1 0 3 0x100080 kqread resolvd 11506 293249 38577 77 3 0x100092 kqread dhcpleased 57335 360166 38577 77 3 0x100092 kqread dhcpleased 38577 91246 1 0 3 0x80 kqread dhcpleased 68996 4702 0 0 3 0x14200 bored smr 24610 513435 0 0 2 0x14200 zerothread 73076 395900 0 0 3 0x14200 aiodoned aiodoned 6555 124793 0 0 3 0x14200 syncer update 78236 362212 0 0 3 0x14200 cleaner cleaner 89673 85462 0 0 3 0x14200 reaper reaper 79274 259866 0 0 3 0x14200 pgdaemon pagedaemon 84450 91847 0 0 3 0x14200 bored viomb 3434 224289 0 0 3 0x40014200 acpi0 acpi0 12800 268734 0 0 3 0x40014200 idle1 76511 90133 0 0 3 0x14200 bored softnet3 39620 230713 0 0 3 0x14200 bored softnet2 38970 275537 0 0 3 0x14200 bored softnet1 43566 136732 0 0 3 0x14200 bored softnet0 16106 328342 0 0 3 0x14200 bored systqmp 62313 446563 0 0 3 0x14200 bored systq 91983 390627 0 0 3 0x14200 tmoslp softclockmp 36221 319477 0 0 3 0x40014200 tmoslp softclock 33225 308306 0 0 3 0x40014200 idle0 1 372039 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &vioq->viq_rxmtx r = 0 (0xffff80000002c4b0) #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+0x1ad sys/kern/kern_lock.c:301 #2 mtx_enter+0x62 sys/kern/kern_lock.c:258 #3 vio_rx_intr+0x82 sys/dev/pv/if_vio.c:1567 #4 vio_queue_intr+0x59 sys/dev/pv/if_vio.c:909 #5 intr_handler+0x11d sys/arch/amd64/amd64/intr.c:563 #6 Xintr_ioapic_edge26_untramp+0x18f #7 __sanitizer_cov_trace_const_cmp4+0x1e kd_curproc sys/dev/kcov.c:583 [inline] #7 __sanitizer_cov_trace_const_cmp4+0x1e sys/dev/kcov.c:230 #8 mtx_enter+0xaf sys/kern/kern_lock.c:261 #9 endtsleep+0x39 sys/kern/kern_synch.c:538 #10 timeout_run+0x13d sys/kern/kern_timeout.c:707 #11 softclock_process_tick_timeout+0x22b sys/kern/kern_timeout.c:765 #12 softclock+0x16b sys/kern/kern_timeout.c:797 #13 softintr_dispatch+0x140 sys/kern/kern_softintr.c:84 #14 dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 #15 Xsoftclock+0x27 #16 __sanitizer_cov_trace_pc+0x95 kd_claim sys/dev/kcov.c:632 [inline] #16 __sanitizer_cov_trace_pc+0x95 sys/dev/kcov.c:157 #17 mtx_enter+0xdd sys/kern/kern_lock.c:261 #18 sleep_setup+0xc6 sys/kern/kern_synch.c:302 shared mutex timeout r = 0 (0xffffffff83861ff0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 timeout_run+0x115 sys/kern/kern_timeout.c:703 #2 softclock_process_tick_timeout+0x22b sys/kern/kern_timeout.c:765 #3 softclock+0x16b sys/kern/kern_timeout.c:797 #4 softintr_dispatch+0x140 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 mtx_enter+0xdd sys/kern/kern_lock.c:261 #9 sleep_setup+0xc6 sys/kern/kern_synch.c:302 #10 sys_futex+0xa04 futex_wait sys/kern/sys_futex.c:301 [inline] #10 sys_futex+0xa04 sys/kern/sys_futex.c:151 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #12 Xsyscall+0x128 CPU 1: exclusive mutex &sched_lock r = 0 (0xffffffff839f8580) #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+0x1ad sys/kern/kern_lock.c:301 #2 mtx_enter+0x13b sys/kern/kern_lock.c:258 #3 preempt+0x35 sys/kern/sched_bsd.c:339 #4 ast+0x165 mi_ast sys/sys/syscall_mi.h:252 [inline] #4 ast+0x165 sys/arch/amd64/amd64/trap.c:543 #5 intr_user_exit+0x3c Process 97384 (syz-executor) thread 0xffff800031c7ef98 (403792) exclusive rwlock clonelk r = 0 (0xffffffff8385ac08) #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+0x377 sys/kern/kern_rwlock.c:310 #2 if_clone_destroy+0x67 sys/net/if.c:-1 #3 tun_dev_close+0x1dc sys/net/if_tun.c:529 #4 spec_close+0x412 sys/kern/spec_vnops.c:-1 #5 VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 #6 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #6 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #7 fdrop+0x126 sys/kern/kern_descrip.c:1267 #8 closef+0x192 sys/kern/kern_descrip.c:1251 #9 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #10 Xsyscall+0x128 Process 97384 (syz-executor) thread 0xffff800031c7f228 (491115) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839140c0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 #2 dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 #3 Xsoftclock+0x27 #4 __sanitizer_cov_trace_pc+0x95 kd_claim sys/dev/kcov.c:632 [inline] #4 __sanitizer_cov_trace_pc+0x95 sys/dev/kcov.c:157 #5 mtx_enter+0xdd sys/kern/kern_lock.c:261 #6 sleep_setup+0xc6 sys/kern/kern_synch.c:302 #7 sys_futex+0xa04 futex_wait sys/kern/sys_futex.c:301 [inline] #7 sys_futex+0xa04 sys/kern/sys_futex.c:151 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 Process 20356 (syz-executor) thread 0xffff80002a2baf78 (142887) exclusive rrwlock inode r = 0 (0xfffffd806e059b00) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #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:3109 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d05f310) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #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:3094 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10311 11463K 12573K 166960K 13595 0 pcb 17 16K 18K 166960K 423 0 rtable 126 10K 11K 166960K 594 0 pf 45 19K 67486K 166960K 305 0 ifaddr 28 3K 7K 166960K 108 0 ifgroup 64 2K 2K 166960K 187 0 sysctl 4 1K 9K 166960K 14 0 counters 72 37K 38K 166960K 192 0 ioctlops 0 0K 4K 166960K 1752 0 iov 0 0K 24K 166960K 62 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1526 96K 96K 166960K 2779 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 33 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 112 0 dirhash 15 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 110K 166960K 1264 0 sigio 1 0K 0K 166960K 25 0 proc 72 91K 116K 166960K 702 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 240 0 in_multi 37 2K 6K 166960K 191 0 ether_multi 1 0K 0K 166960K 14 0 mrt 0 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 656 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 246 175K 191K 166960K 12749 0 UVM aobj 111 3K 3K 166960K 114 0 pinsyscall 42 84K 104K 166960K 2445 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 76 0 NDP 16 0K 1K 166960K 75 0 temp 70 8693K 8947K 166960K 46920 0 kqueue 16 26K 28K 166960K 187 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 120 112 0 109 1 0 1 1 0 8 0 rtentry 176 170 0 129 5 0 5 5 0 8 0 unpcb 144 863 0 842 9 7 2 6 0 8 1 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 660 0 652 14 13 1 13 0 8 0 arp 128 25 0 18 1 0 1 1 0 8 0 inpcb 328 1677 0 1665 20 13 7 12 0 8 5 nd6 144 36 0 29 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 2 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 43 0 43 2 1 1 1 0 8 1 pppxif 1504 8 0 8 2 1 1 1 0 8 1 pffrag 232 28 0 18 1 0 1 1 0 482 0 pffrnode 88 26 0 18 1 0 1 1 0 8 0 pffrent 40 52 0 41 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 pfrktable 1344 6 0 2 1 0 1 1 0 8 0 pfanchor 1288 5 0 0 1 0 1 1 0 8 0 pftag 88 2 0 1 1 0 1 1 0 8 0 pfstitem 24 96 0 23 1 0 1 1 0 8 0 pfstkey 128 98 0 25 3 0 3 3 0 8 0 pfstate 384 96 0 24 8 0 8 8 0 8 0 pfrule 1344 95 0 22 9 2 7 7 0 8 0 rttmr 136 3 0 3 3 2 1 1 0 8 1 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 747 0 541 31 9 22 28 0 8 8 art_table 32 752 0 541 4 0 4 4 0 8 0 art_node 16 166 0 129 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 7 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 107 0 97 1 0 1 1 0 8 0 shmpl 112 111 0 3 4 0 4 4 0 8 0 dirhash 1024 27 0 8 3 0 3 3 0 8 0 dino2pl 256 3677 0 2164 95 0 95 95 0 8 0 ffsino 288 3677 0 2164 109 0 109 109 0 8 0 nchpl 144 5350 0 3650 64 0 64 64 0 8 0 rtmask 32 10 0 10 3 2 1 1 0 8 1 uvmvnodes 80 4755 0 0 98 0 98 98 0 8 0 vnodes 216 4755 0 0 265 0 265 265 0 8 0 namei 1024 19014 0 19013 2 1 1 1 0 8 0 percpumem 16 111 0 60 1 0 1 1 0 8 0 pfiaddrpl 120 65 0 0 2 0 2 2 0 8 0 kstatmem 264 110 0 76 3 0 3 3 0 8 0 scsiplug 72 4 0 4 2 2 0 1 0 8 0 scxspl 216 23651 0 23651 12 10 2 8 1 8 2 plimitpl 152 412 0 393 1 0 1 1 0 8 0 sigapl 424 1582 0 1512 9 0 9 9 0 8 0 knotepl 120 585 0 0 18 0 18 18 0 8 0 kqueuepl 224 385 0 369 5 4 1 5 0 8 0 pipepl 336 257 0 228 3 0 3 3 0 8 0 fdescpl 520 1535 0 1504 3 0 3 3 0 8 0 filepl 160 10308 0 10063 29 13 16 23 0 8 0 lockfpl 104 796 0 788 2 1 1 2 0 8 0 lockfspl 48 291 0 283 1 0 1 1 0 8 0 sessionpl 144 27 0 18 1 0 1 1 0 8 0 pgrppl 48 52 0 35 1 0 1 1 0 8 0 ucredpl 104 1424 0 1407 1 0 1 1 0 8 0 zombiepl 144 1513 0 1512 1 0 1 1 0 8 0 processpl 1240 1582 0 1512 6 0 6 6 0 8 0 procpl 656 3467 0 3386 8 0 8 8 0 8 0 srpgc 96 18 0 18 3 2 1 1 0 8 1 sosppl 168 6 0 6 3 2 1 1 0 8 1 sockpl 728 2684 0 2648 38 28 10 22 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 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 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 41 0 0 5 0 5 5 0 8 0 mtagpl 96 21 0 0 1 0 1 1 0 8 0 mbufpl 256 1190 0 0 74 0 74 74 0 8 0 bufpl 280 8104 0 1962 439 0 439 439 0 8 0 anonpl 32 11524 0 0 93 0 93 93 0 246 0 amapchunkpl 152 44143 0 43632 47 16 31 38 0 158 10 amappl16 200 4628 0 4594 31 16 15 18 0 8 8 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 126 0 114 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 1 0 1 0 8 0 amappl12 168 2235 0 2204 3 1 2 2 0 8 0 amappl11 160 51 0 36 1 0 1 1 0 8 0 amappl10 152 11 0 11 1 1 0 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 29 0 27 1 0 1 1 0 8 0 amappl7 128 121 0 109 1 0 1 1 0 8 0 amappl6 120 221 0 218 1 0 1 1 0 8 0 amappl5 112 156 0 146 1 0 1 1 0 8 0 amappl4 104 333 0 312 1 0 1 1 0 8 0 amappl3 96 8776 0 8658 4 0 4 4 0 8 0 amappl2 88 698 0 636 2 0 2 2 0 8 0 amappl1 80 13576 0 12969 18 3 15 15 0 8 0 amappl 88 11793 0 11623 5 0 5 5 0 92 0 dma4096 4096 2 0 2 2 1 1 1 0 8 1 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 128 254 0 254 2 2 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 113 0 3 2 0 2 2 0 8 0 uaddrrnd 24 1535 0 1504 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1535 0 1504 1 0 1 1 0 8 0 vmmpekpl 168 13887 0 13833 3 0 3 3 0 8 0 vmmpepl 168 101372 0 99358 112 10 102 104 0 357 4 vmsppl 480 1534 0 1504 7 2 5 5 0 8 0 rwobjpl 72 32154 0 26338 106 0 106 106 0 8 0 pdppl 4096 3077 0 3008 109 36 73 85 0 8 4 pvpl 32 17719 0 0 143 0 143 143 0 265 0 pmappl 256 1534 0 1504 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 478 0 64 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff83879ff0) 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 mtx_enter(ffffffff839f8570) at mtx_enter+0xd2 sys/kern/kern_lock.c:261 wakeup_n(ffff80000002c000,1) at wakeup_n+0x54 sys/kern/kern_synch.c:579 task_add(ffff80000002c000,ffff800000039530) at task_add+0x167 sys/kern/kern_task.c:372 ifiq_input(ffff8000000394c0,ffff80003c4308b8) at ifiq_input+0x4b0 sys/net/ifq.c:794 vio_rxeof(ffff80000002c400) at vio_rxeof+0x40b sys/dev/pv/if_vio.c:1553 vio_rx_intr(ffff80000019f800) at vio_rx_intr+0x98 sys/dev/pv/if_vio.c:1569 vio_queue_intr(ffff80000002c400) at vio_queue_intr+0x59 sys/dev/pv/if_vio.c:909 intr_handler(ffff80003c430a60,ffff800000079d80) at intr_handler+0x11d sys/arch/amd64/amd64/intr.c:563 Xintr_ioapic_edge26_untramp() at Xintr_ioapic_edge26_untramp+0x18f __sanitizer_cov_trace_const_cmp4(0,2) at __sanitizer_cov_trace_const_cmp4+0x1e kd_curproc sys/dev/kcov.c:583 [inline] __sanitizer_cov_trace_const_cmp4(0,2) at __sanitizer_cov_trace_const_cmp4+0x1e sys/dev/kcov.c:230 mtx_enter(ffffffff839f8570) at mtx_enter+0xaf sys/kern/kern_lock.c:261 endtsleep(ffff80002a2ba2a8) at endtsleep+0x39 sys/kern/kern_synch.c:538 timeout_run(ffffffff83862048,ffff80002a2ba338) at timeout_run+0x13d sys/kern/kern_timeout.c:707 softclock_process_tick_timeout(ffff80002a2ba338,0) at softclock_process_tick_timeout+0x22b sys/kern/kern_timeout.c:765 softclock(0) at softclock+0x16b sys/kern/kern_timeout.c:797 softintr_dispatch(0) at softintr_dispatch+0x140 sys/kern/kern_softintr.c:84 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x95 kd_claim sys/dev/kcov.c:632 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x95 sys/dev/kcov.c:157 mtx_enter(ffffffff839f8570) at mtx_enter+0xdd sys/kern/kern_lock.c:261 sleep_setup(ffff80003c430f10,120,ffffffff833d7766) at sleep_setup+0xc6 sys/kern/kern_synch.c:302 sys_futex(ffff800031c7f228,ffff80003c4310b0,ffff80003c431000) at sys_futex+0xa04 futex_wait sys/kern/sys_futex.c:301 [inline] sys_futex(ffff800031c7f228,ffff80003c4310b0,ffff80003c431000) at sys_futex+0xa04 sys/kern/sys_futex.c:151 syscall(ffff80003c4310b0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4310b0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd8ef6a57620, count: -27 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(ffff8000299dee00,9,0) at witness_checkorder+0x10fb sys/kern/subr_witness.c:-1 mtx_enter(ffff8000299dedf0) at mtx_enter+0x4a sys/kern/kern_lock.c:257 clockintr_cancel(ffff8000299de2f8) at clockintr_cancel+0x2f sys/kern/kern_clockintr.c:323 mi_switch() at mi_switch+0x172 x86_atomic_clearbits_u32 machine/atomic.h:-1 [inline] mi_switch() at mi_switch+0x172 sys/kern/sched_bsd.c:374 ast(ffff80003c427db0) at ast+0x165 mi_ast sys/sys/syscall_mi.h:252 [inline] ast(ffff80003c427db0) at ast+0x165 sys/arch/amd64/amd64/trap.c:543 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x70ba05b8db90, count: -7