panic: softclock: invalid to_clock: 1815118 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *107256 41710 0 0x8000002 0 0 syz-executor.0 517446 33911 0 0x14000 0x200 1K update db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285e523) at panic+0x17b sys/kern/subr_prf.c:198 softclock(0) at softclock+0x22d sys/kern/kern_timeout.c:759 softintr_dispatch(0) at softintr_dispatch+0xcd sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff82e7df10) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82e7df10) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff80002bd25830) at syscall+0x83b mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002bd25830) at syscall+0x83b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fc8f511ae90, 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: softclock: invalid to_clock: 1815118 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285e523) at panic+0x17b sys/kern/subr_prf.c:198 softclock(0) at softclock+0x22d sys/kern/kern_timeout.c:759 softintr_dispatch(0) at softintr_dispatch+0xcd sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff82e7df10) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82e7df10) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff80002bd25830) at syscall+0x83b mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002bd25830) at syscall+0x83b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fc8f511ae90, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002bd25510 rbx 0xffffffff82d48d77 cpu_info_full_primary+0x2d77 rdx 0 rcx 0xffff80002bd1a7f0 rax 0xffffffff82d47ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xc61fa218eb1035b1 r11 0x2274f8e49c247f95 r12 0xffffffff82d48b78 cpu_info_full_primary+0x2b78 r13 0 r14 0 r15 0x1 rip 0xffffffff82653b5c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002bd25500 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) tid=107256 pid=41710 tcnt=1 stat=onproc flags process=8000002 proc=0 runpri=84, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a204540,0xffff80002bd1a2e0 process=0xffff80002ef6c498 user=0xffff80002bd20000, vmspace=0xfffffd8063c49c08 estcpu=34, cpticks=0, pctcpu=5.17, user=0, sys=0, intr=363 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 2441 204164 64465 0 2 0x8000480 syz-executor.3 2441 484280 64465 0 3 0xc000080 sbwait syz-executor.3 2441 361547 64465 0 3 0xc000080 fsleep syz-executor.3 4767 152190 48880 0 2 0x8000480 syz-executor.5 4767 191080 48880 0 3 0xc000080 fsleep syz-executor.5 4767 310584 48880 0 3 0xc000080 fsleep syz-executor.5 88376 425992 48590 0 2 0x8000480 syz-executor.6 88376 259971 48590 0 3 0xc000080 ttyout syz-executor.6 88376 448978 48590 0 3 0xc000080 fsleep syz-executor.6 64465 36464 47381 0 3 0x8000082 nanoslp syz-executor.3 48880 447071 47381 0 2 0x8000482 syz-executor.5 *41710 107256 47381 0 7 0x8000002 syz-executor.0 25709 154997 47381 0 2 0x8000482 syz-executor.7 92468 137180 47381 0 2 0x8000002 syz-executor.2 48590 455137 47381 0 2 0x8000482 syz-executor.6 75461 115220 47381 0 2 0x8000002 syz-executor.1 43587 197014 47381 0 3 0x8000082 nanoslp syz-executor.4 69343 398012 0 0 3 0x14200 bored sosplice 47381 151452 83913 0 3 0x1a000082 wait syz-fuzzer 47381 219488 83913 0 3 0x1e000082 nanoslp syz-fuzzer 47381 119812 83913 0 3 0x1e000082 wait syz-fuzzer 47381 136738 83913 0 3 0x1e000082 wait syz-fuzzer 47381 82398 83913 0 3 0x1e000082 thrsleep syz-fuzzer 47381 155969 83913 0 2 0x1e000082 syz-fuzzer 47381 336725 83913 0 3 0x1e000082 wait syz-fuzzer 47381 401538 83913 0 3 0x1e000082 wait syz-fuzzer 47381 125552 83913 0 3 0x1e000082 wait syz-fuzzer 47381 459476 83913 0 3 0x1e000082 thrsleep syz-fuzzer 47381 153725 83913 0 3 0x1e000082 thrsleep syz-fuzzer 47381 80623 83913 0 3 0x1e000082 thrsleep syz-fuzzer 47381 326236 83913 0 3 0x1e000082 wait syz-fuzzer 47381 363203 83913 0 3 0x1e000082 wait syz-fuzzer 47381 299860 83913 0 3 0x1e000082 thrsleep syz-fuzzer 47381 96011 83913 0 3 0x1e000082 kqread syz-fuzzer 83913 505805 16053 0 3 0x810008a sigsusp ksh 16053 344747 1084 0 3 0x1800009a kqread sshd 83212 467290 1 0 3 0x18100083 ttyin getty 1084 69797 1 0 3 0x18000088 kqread sshd 3637 227817 39068 73 2 0x19100010 syslogd 39068 372166 1 0 3 0x18100082 sbwait syslogd 38634 332545 1 0 3 0x18100080 kqread resolvd 61487 187854 14672 77 3 0x18100092 kqread dhcpleased 38761 65250 14672 77 3 0x18100092 kqread dhcpleased 14672 150362 1 0 3 0x18000080 kqread dhcpleased 75709 219833 0 0 2 0x14200 smr 51436 6480 0 0 2 0x14200 zerothread 43858 331983 0 0 3 0x14200 aiodoned aiodoned 33911 517446 0 0 7 0x14200 update 47971 5938 0 0 3 0x14200 cleaner cleaner 88276 360528 0 0 2 0x14200 reaper 73744 503670 0 0 3 0x14200 pgdaemon pagedaemon 28625 226010 0 0 3 0x14200 bored viomb 30385 324796 0 0 3 0x40014200 acpi0 acpi0 75187 384017 0 0 3 0x40014200 idle1 97466 109446 0 0 3 0x14200 bored softnet3 90617 79981 0 0 3 0x14200 bored softnet2 8448 444730 0 0 3 0x14200 bored softnet1 43125 227700 0 0 2 0x14200 softnet0 91484 408449 0 0 2 0x14200 systqmp 59143 471832 0 0 3 0x14200 bored systq 85908 454192 0 0 3 0x14200 tmoslp softclockmp 62663 335160 0 0 3 0x40014200 tmoslp softclock 67650 488182 0 0 3 0x40014200 idle0 1 384152 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_timeout.c:57 r = 0 (0xffffffff82d54510) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 mtx_enter_try+0x103 #2 mtx_enter+0x4e sys/kern/kern_lock.c:266 #3 softclock_process_tick_timeout+0x19d sys/kern/kern_timeout.c:723 #4 softclock+0x139 sys/kern/kern_timeout.c:755 #5 softintr_dispatch+0xcd sys/arch/amd64/amd64/softintr.c:90 #6 Xsoftclock+0x27 #7 __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] #7 __mp_lock+0x122 sys/kern/kern_lock.c:147 #8 syscall+0x83b mi_syscall sys/sys/syscall_mi.h:180 [inline] #8 syscall+0x83b sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd807084d8d8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 mtx_enter_try+0x103 #2 mtx_enter+0x4e sys/kern/kern_lock.c:266 #3 pmap_do_remove+0x99 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_do_remove+0x99 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline] #3 pmap_do_remove+0x99 sys/arch/amd64/amd64/pmap.c:1800 #4 uvm_unmap_kill_entry_withlock+0x1b1 sys/uvm/uvm_map.c:1897 #5 uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #5 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534 #6 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 #7 reaper+0x197 sys/kern/kern_exit.c:463 #8 proc_trampoline+0x10 Process 41710 (syz-executor.0) thread 0xffff80002bd1a7f0 (107256) Process 75461 (syz-executor.1) thread 0xffff80002bd1a560 (115220) Process 3637 (syslogd) thread 0xffff8000ffffd490 (227817) Process 88276 (reaper) thread 0xffff80002a149718 (360528) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10231 6712K 7106K 166960K 18903 0 pcb 17 14K 17K 166960K 866 0 rtable 218 15K 16K 166960K 2202 0 pf 43 11K 11K 166960K 311 0 ifaddr 46 16K 16K 166960K 330 0 ifgroup 78 3K 3K 166960K 511 0 sysctl 4 1K 1K 166960K 13 0 counters 76 37K 38K 166960K 324 0 ioctlops 0 0K 4K 166960K 1731 0 iov 0 0K 32K 166960K 318 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1416 89K 90K 166960K 5658 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 28K 40K 166960K 105 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 384 0 dirhash 12 2K 3K 166960K 267 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 13 45K 85K 166960K 4967 0 sigio 0 0K 0K 166960K 87 0 proc 60 79K 115K 166960K 2185 0 subproc 104 6K 8K 166960K 758 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 821 0 in_multi 84 6K 7K 166960K 768 0 ether_multi 1 0K 0K 166960K 64 0 mrt 1 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 127 572K 572K 166960K 127 0 exec 0 0K 1K 166960K 1614 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 282 90K 106K 166960K 44009 0 UVM aobj 147 9K 9K 166960K 161 0 pinsyscall 33 66K 100K 166960K 7387 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 1K 166960K 379 0 NDP 19 0K 1K 166960K 250 0 temp 78 6820K 14756K 166960K 171974 0 kqueue 12 18K 30K 166960K 750 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 120 588 0 585 3 2 1 3 0 8 0 rtentry 112 736 0 644 5 1 4 4 0 8 0 unpcb 144 3657 0 3643 11 9 2 6 0 8 1 syncache 336 7 0 7 4 4 0 1 0 8 0 tcpqe 32 29 112 29 3 3 0 1 0 8 0 tcpcb 808 1310 0 1305 14 13 1 2 0 8 0 arp 120 138 0 121 1 0 1 1 0 8 0 inpcb 384 5045 0 5034 28 26 2 9 0 8 0 nd6 136 198 0 173 2 1 1 2 0 8 0 pkpcb 40 30 0 30 18 17 1 1 0 8 1 kcovpl 48 58 0 50 1 0 1 1 0 8 0 ppxss 1168 40 0 40 21 20 1 1 0 8 1 pffrag 232 50 0 48 2 1 1 1 0 482 0 pffrnode 88 49 0 47 2 1 1 1 0 8 0 pffrent 40 540 0 538 2 1 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 pfstitem 24 398 0 367 1 0 1 1 0 8 0 pfstkey 128 398 0 367 4 2 2 3 0 8 0 pfstate 376 398 0 367 10 6 4 7 0 8 0 pfrule 1344 21 0 16 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 2654 0 2273 46 22 24 30 0 8 0 art_table 32 2655 0 2273 4 0 4 4 0 8 0 art_node 16 719 0 637 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 11 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 382 0 372 1 0 1 1 0 8 0 shmpl 112 158 0 14 5 0 5 5 0 8 0 dirhash 1024 187 0 170 3 0 3 3 0 8 0 dino2pl 256 9667 0 8128 97 0 97 97 0 8 0 ffsino 272 9667 0 8128 104 0 104 104 0 8 0 nchpl 144 16671 0 16064 66 38 28 66 0 8 0 uvmvnodes 80 10284 0 0 210 0 210 210 0 8 0 vnodes 216 10284 0 0 572 0 572 572 0 8 0 namei 1024 60387 0 60387 11 10 1 2 0 8 1 percpumem 16 176 0 124 1 0 1 1 0 8 0 vcpupl 3904 12 0 4 1 0 1 1 0 8 0 vmpool 696 29 0 21 3 2 1 1 0 8 0 kstatmem 264 282 0 248 6 3 3 3 0 8 0 scsiplug 72 10 0 10 10 9 1 1 0 8 1 scxspl 216 133761 0 133751 37 36 1 8 1 8 0 plimitpl 152 790 0 774 1 0 1 1 0 8 0 sigapl 424 5213 0 5168 8 2 6 8 0 8 0 futexpl 64 80538 0 80534 9 8 1 1 0 8 0 knotepl 120 1034 0 0 19 0 19 19 0 8 0 kqueuepl 216 1898 0 1890 18 17 1 12 0 8 0 pipepl 320 880 0 852 3 0 3 3 0 8 0 fdescpl 496 5167 0 5143 7 3 4 5 0 8 0 filepl 152 34382 0 34136 34 23 11 19 0 8 0 lockfpl 104 1400 0 1398 1 0 1 1 0 8 0 lockfspl 48 616 0 614 1 0 1 1 0 8 0 sessionpl 144 69 0 53 1 0 1 1 0 8 0 pgrppl 48 172 0 156 1 0 1 1 0 8 0 ucredpl 104 5983 0 5971 1 0 1 1 0 8 0 zombiepl 144 5170 0 5168 4 3 1 1 0 8 0 processpl 1136 5213 0 5168 6 1 5 6 0 8 0 procpl 656 10325 0 10258 13 5 8 9 0 8 0 srpgc 96 48 0 48 16 16 0 1 0 8 0 sosppl 168 13 0 13 9 9 0 1 0 8 0 sockpl 664 9374 0 9346 61 56 5 15 0 8 2 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 2 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 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 700 0 0 48 10 38 48 0 8 0 mtagpl 96 38 0 0 1 0 1 1 0 8 0 mbufpl 256 1117 0 0 63 0 63 63 0 8 0 bufpl 280 18955 0 8667 735 0 735 735 0 8 0 anonpl 24 870700 0 859468 194 123 71 91 0 186 0 amapchunkpl 152 148954 0 148050 97 60 37 41 0 158 0 amappl16 200 20709 0 20541 123 101 22 35 0 8 4 amappl15 192 53 0 51 1 0 1 1 0 8 0 amappl14 184 323 0 311 2 1 1 2 0 8 0 amappl13 176 13 0 12 1 0 1 1 0 8 0 amappl12 168 6561 0 6530 2 0 2 2 0 8 0 amappl11 160 72 0 62 1 0 1 1 0 8 0 amappl10 152 139 0 126 1 0 1 1 0 8 0 amappl9 144 345 0 344 1 0 1 1 0 8 0 amappl8 136 409 0 369 2 0 2 2 0 8 0 amappl7 128 64 0 49 1 0 1 1 0 8 0 amappl6 120 992 0 974 2 1 1 2 0 8 0 amappl5 112 364 0 351 1 0 1 1 0 8 0 amappl4 104 974 0 936 2 0 2 2 0 8 0 amappl3 96 26420 0 26336 3 0 3 3 0 8 0 amappl2 88 5654 0 5583 4 2 2 4 0 8 0 amappl1 80 27258 0 26772 22 11 11 22 0 8 0 amappl 88 42736 0 42550 7 2 5 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 72 160 0 14 3 0 3 3 0 8 0 uaddrrnd 24 5196 0 5163 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5196 0 5163 1 0 1 1 0 8 0 vmmpekpl 168 37820 0 37750 4 0 4 4 0 8 0 vmmpepl 168 334290 0 332431 247 149 98 117 0 357 3 vmsppl 440 5195 0 5162 6 1 5 5 0 8 0 rwobjpl 56 92572 0 81016 188 21 167 167 0 8 1 pdppl 4096 10399 0 10332 289 212 77 77 0 8 10 pvpl 32 49185 0 0 398 1 397 397 0 265 0 pmappl 248 5195 0 5162 5 2 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 708 0 293 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285e523) at panic+0x17b sys/kern/subr_prf.c:198 softclock(0) at softclock+0x22d sys/kern/kern_timeout.c:759 softintr_dispatch(0) at softintr_dispatch+0xcd sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff82e7df10) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82e7df10) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff80002bd25830) at syscall+0x83b mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002bd25830) at syscall+0x83b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fc8f511ae90, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 __mp_acquire_count(ffffffff82e7df10,1) at __mp_acquire_count+0x5a sys/kern/kern_lock.c:227 tsleep(fffffd8067a8fa00,11,ffffffff8284e343,0) at tsleep+0x16f getblk(fffffd807efa6510,1fa500,4000,0,ffffffffffffffff) at getblk+0x137 sys/kern/vfs_bio.c:1025 bread(fffffd807efa6510,1fa500,4000,ffff80002a167108) at bread+0x3e bio_doread sys/kern/vfs_bio.c:430 [inline] bread(fffffd807efa6510,1fa500,4000,ffff80002a167108) at bread+0x3e sys/kern/vfs_bio.c:475 ffs_update(fffffd806f70f780,0) at ffs_update+0x14c sys/ufs/ffs/ffs_inode.c:91 VOP_FSYNC(fffffd805fcc87d8,fffffd807f7d3f08,3,ffff80002a148f68) at VOP_FSYNC+0xd2 sys/kern/vfs_vops.c:311 syncer_thread(ffff80002a148f68) at syncer_thread+0x221 sys/kern/vfs_sync.c:161 end trace frame: 0x0, count: 4 ddb{1}> trace x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 __mp_acquire_count(ffffffff82e7df10,1) at __mp_acquire_count+0x5a sys/kern/kern_lock.c:227 tsleep(fffffd8067a8fa00,11,ffffffff8284e343,0) at tsleep+0x16f getblk(fffffd807efa6510,1fa500,4000,0,ffffffffffffffff) at getblk+0x137 sys/kern/vfs_bio.c:1025 bread(fffffd807efa6510,1fa500,4000,ffff80002a167108) at bread+0x3e bio_doread sys/kern/vfs_bio.c:430 [inline] bread(fffffd807efa6510,1fa500,4000,ffff80002a167108) at bread+0x3e sys/kern/vfs_bio.c:475 ffs_update(fffffd806f70f780,0) at ffs_update+0x14c sys/ufs/ffs/ffs_inode.c:91 VOP_FSYNC(fffffd805fcc87d8,fffffd807f7d3f08,3,ffff80002a148f68) at VOP_FSYNC+0xd2 sys/kern/vfs_vops.c:311 syncer_thread(ffff80002a148f68) at syncer_thread+0x221 sys/kern/vfs_sync.c:161 end trace frame: 0x0, count: -11