panic: acquiring blockable sleep lock with spinlock or critical section held (rwlock) vmmaplk Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 41100 62361 73 0x1100010 0 0 syslogd *370102 96538 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830718a1) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffffffff835e6928,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter_read(ffffffff835e6918) at rw_enter_read+0xab sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff800029fe5a50,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800029fe5a50,ffff800029fe5a88,ffff800029fe5ab0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(ffffffff835e6838,7f839d322000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800029fe5bf0,7f839d322238) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800029fe5bf0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pmap_page_remove(fffffd8008699a60) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd8008699a60) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2014 uvm_anfree_list(fffffd8057b84cc0,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806f77b0a8) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff800029fe5e20,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 end trace frame: 0xffff800029fe5e60, count: 0 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: acquiring blockable sleep lock with spinlock or critical section held (rwlock) vmmaplk ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830718a1) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffffffff835e6928,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter_read(ffffffff835e6918) at rw_enter_read+0xab sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff800029fe5a50,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800029fe5a50,ffff800029fe5a88,ffff800029fe5ab0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(ffffffff835e6838,7f839d322000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800029fe5bf0,7f839d322238) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800029fe5bf0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pmap_page_remove(fffffd8008699a60) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd8008699a60) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2014 uvm_anfree_list(fffffd8057b84cc0,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806f77b0a8) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff800029fe5e20,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 uvm_map_teardown(fffffd807eb77898) at uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 uvmspace_free(fffffd807eb77898) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd91c0) at reaper+0x246 sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -17 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800029fe56b0 rbx 0xffff800029b7cdbf rdx 0 rcx 0xffff800029fd91c0 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4bd7bf1ba9e9568d r11 0x954bc4b3f722bf2 r12 0xffff800029b7cbc0 r13 0 r14 0 r15 0x1 rip 0xffffffff8159d1d5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800029fe56a0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (reaper) tid=370102 pid=96538 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=84, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800029fd9448,0xffff800029fd8f48 process=0xffff800029fea8d0 user=0xffff800029fe0000, vmspace=0xffffffff835e6838 estcpu=36, cpticks=12, pctcpu=22.28, user=0, sys=12522, intr=23 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 45837 463827 41998 0 3 0x82 wait syz-executor 57991 345095 41998 0 3 0x82 wait syz-executor 98099 215179 41998 0 3 0x82 wait syz-executor 60357 263440 41998 0 3 0x82 wait syz-executor 36203 170930 41998 0 3 0x82 wait syz-executor 73330 514025 41998 0 3 0x82 wait syz-executor 75637 432657 41998 0 3 0x82 nanoslp syz-executor 64301 277387 1 0 3 0x100083 ttyin getty 20113 159700 0 0 3 0x14200 bored sosplice 41998 301561 60752 0 3 0x82 wait syz-executor 60752 191446 60787 0 3 0x10008a sigsusp ksh 60787 88525 82030 0 3 0x98 kqread sshd-session 82030 223878 16872 0 3 0x92 kqread sshd-session 16872 249393 1 0 3 0x88 kqread sshd 96127 446468 84724 74 3 0x1100092 bpf pflogd 84724 513597 1 0 3 0x80 sbwait pflogd 62361 41100 81163 73 7 0x1100010 syslogd 81163 290032 1 0 3 0x100082 sbwait syslogd 99223 178121 1 0 3 0x100080 kqread resolvd 35454 67521 77606 77 3 0x100092 kqread dhcpleased 50694 183270 77606 77 3 0x100092 kqread dhcpleased 77606 213936 1 0 3 0x80 kqread dhcpleased 83875 403334 0 0 3 0x14200 bored smr 7955 310289 0 0 3 0x14200 pgzero zerothread 79818 427309 0 0 3 0x14200 aiodoned aiodoned 92530 39836 0 0 3 0x14200 syncer update 1871 41816 0 0 3 0x14200 cleaner cleaner *96538 370102 0 0 7 0x14200 reaper 89774 244296 0 0 3 0x14200 pgdaemon pagedaemon 82597 13919 0 0 3 0x14200 bored viomb 68298 432640 0 0 3 0x40014200 acpi0 acpi0 97173 282022 0 0 3 0x40014200 idle1 20988 197240 0 0 3 0x14200 bored softnet3 7661 46265 0 0 3 0x14200 bored softnet2 55532 5889 0 0 3 0x14200 bored softnet1 95855 313764 0 0 3 0x14200 bored softnet0 2485 327536 0 0 3 0x14200 bored systqmp 14210 266088 0 0 3 0x14200 bored systq 75528 522173 0 0 3 0x14200 tmoslp softclockmp 7016 38365 0 0 3 0x40014200 tmoslp softclock 63082 66629 0 0 3 0x40014200 idle0 1 277480 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806bd43db0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_page_remove+0xcd rcr3 machine/cpufunc.h:139 [inline] #3 pmap_page_remove+0xcd pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_page_remove+0xcd sys/arch/amd64/amd64/pmap.c:1974 #4 uvm_anfree_list+0xd6 #5 amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 #6 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #7 uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 #8 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #9 reaper+0x246 sys/kern/kern_exit.c:477 #10 proc_trampoline+0x10 Process 62361 (syslogd) thread 0xffff8000ffffdbe8 (41100) exclusive rrwlock inode r = 0 (0xfffffd806e4033d0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2926 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 96538 (reaper) thread 0xffff800029fd91c0 (370102) exclusive rwlock amaplk r = 0 (0xfffffd80649a01a0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 amap_unref+0x38 sys/uvm/uvm_amap.c:1360 #2 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #3 uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 #4 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #5 reaper+0x246 sys/kern/kern_exit.c:477 #6 proc_trampoline+0x10 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806bd43db0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_page_remove+0xcd rcr3 machine/cpufunc.h:139 [inline] #3 pmap_page_remove+0xcd pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_page_remove+0xcd sys/arch/amd64/amd64/pmap.c:1974 #4 uvm_anfree_list+0xd6 #5 amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 #6 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #7 uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 #8 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #9 reaper+0x246 sys/kern/kern_exit.c:477 #10 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10202 11129K 11969K 166960K 13943 0 pcb 17 16K 18K 166960K 544 0 rtable 208 8K 9K 166960K 2293 0 pf 33 17K 25K 166960K 244 0 ifaddr 39 7K 8K 166960K 296 0 ifgroup 51 2K 2K 166960K 312 0 sysctl 2 0K 1K 166960K 9 0 counters 62 36K 36K 166960K 194 0 ioctlops 0 0K 8K 166960K 1826 0 iov 0 0K 17K 166960K 335 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1565 98K 99K 166960K 3775 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 37 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 94 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 9 29K 93K 166960K 2662 0 sigio 0 0K 0K 166960K 46 0 proc 73 91K 128K 166960K 2250 0 subproc 91 5K 7K 166960K 833 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 287 0 in_multi 88 6K 7K 166960K 802 0 ether_multi 1 0K 0K 166960K 19 0 mrt 1 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 1334 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 227 72K 91K 166960K 23148 0 UVM aobj 131 6K 6K 166960K 134 0 pinsyscall 34 68K 104K 166960K 5214 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 212 0 NDP 11 0K 2K 166960K 210 0 temp 76 6824K 6902K 166960K 150368 0 kqueue 13 20K 30K 166960K 299 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 277 0 274 2 1 1 2 0 8 0 rtentry 112 798 0 707 4 1 3 4 0 8 0 unpcb 144 1819 0 1802 24 23 1 6 0 8 0 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 808 846 0 842 25 24 1 14 0 8 0 arp 120 146 0 129 1 0 1 1 0 8 0 inpcb 336 3131 0 3123 50 48 2 20 0 8 1 nd6 136 203 0 181 1 0 1 1 0 8 0 pkpcb 40 13 0 13 6 6 0 1 0 8 0 kcovpl 48 64 0 57 1 0 1 1 0 8 0 ppxss 1168 6 0 6 4 4 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 14 0 14 1 1 0 1 0 482 0 pffrnode 88 12 0 12 1 1 0 1 0 8 0 pffrent 40 25 0 25 1 1 0 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 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 31 0 29 1 0 1 1 0 8 0 pfstkey 128 32 0 30 2 1 1 2 0 8 0 pfstate 376 32 0 30 4 3 1 4 0 8 0 pfrule 1344 28 0 20 2 1 1 2 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 3224 0 2815 40 11 29 29 0 8 0 art_table 32 3228 0 2815 4 0 4 4 0 8 0 art_node 16 792 0 711 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 8 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 91 0 81 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 4638 0 3020 102 0 102 102 0 8 0 ffsino 272 4638 0 3020 110 1 109 109 0 8 0 nchpl 144 7282 0 5518 66 0 66 66 0 8 0 uvmvnodes 80 6688 0 0 137 0 137 137 0 8 0 vnodes 216 6688 0 0 372 0 372 372 0 8 0 namei 1024 31589 0 31589 8 7 1 2 0 8 1 percpumem 16 111 0 66 1 0 1 1 0 8 0 kstatmem 264 154 0 132 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 51940 0 51940 16 15 1 8 1 8 1 plimitpl 152 388 0 371 1 0 1 1 0 8 0 sigapl 424 2879 0 2829 10 3 7 9 0 8 0 futexpl 64 29216 0 29216 7 6 1 1 0 8 1 knotepl 120 666 0 0 17 0 17 17 0 8 0 kqueuepl 216 595 0 586 9 8 1 5 0 8 0 pipepl 320 478 0 451 8 5 3 8 0 8 0 fdescpl 496 2837 0 2814 7 2 5 5 0 8 0 filepl 152 17287 0 17065 46 36 10 19 0 8 0 lockfpl 104 801 0 799 2 1 1 2 0 8 0 lockfspl 48 320 0 318 1 0 1 1 0 8 0 sessionpl 144 82 0 73 1 0 1 1 0 8 0 pgrppl 48 233 0 216 1 0 1 1 0 8 0 ucredpl 104 2290 0 2276 1 0 1 1 0 8 0 zombiepl 144 2837 0 2829 1 0 1 1 0 8 0 processpl 1160 2879 0 2829 7 3 4 6 0 8 0 procpl 648 5704 0 5644 8 2 6 8 0 8 0 srpgc 96 4 0 4 2 2 0 1 0 8 0 sosppl 168 15 0 15 6 6 0 1 0 8 0 sockpl 664 5303 0 5275 80 76 4 23 0 8 0 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 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 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 165 0 0 18 0 18 18 0 8 0 mcl2k 2048 71 0 0 6 0 6 6 0 8 0 mtagpl 96 22 0 0 1 0 1 1 0 8 0 mbufpl 256 3428 0 0 213 0 213 213 0 8 0 bufpl 280 13235 0 5053 585 0 585 585 0 8 0 anonpl 24 442652 0 439144 117 54 63 77 0 185 19 amapchunkpl 152 75219 0 74748 59 21 38 42 0 158 15 amappl16 200 9786 0 9766 79 75 4 25 0 8 1 amappl15 192 12 0 12 1 1 0 1 0 8 0 amappl14 184 231 0 219 1 0 1 1 0 8 0 amappl13 176 15 0 14 2 1 1 1 0 8 0 amappl12 168 4375 0 4344 3 1 2 2 0 8 0 amappl11 160 58 0 44 1 0 1 1 0 8 0 amappl10 152 15 0 15 2 2 0 1 0 8 0 amappl9 144 144 0 144 1 1 0 1 0 8 0 amappl8 136 27 0 23 1 0 1 1 0 8 0 amappl7 128 227 0 214 1 0 1 1 0 8 0 amappl6 120 757 0 755 1 0 1 1 0 8 0 amappl5 112 364 0 352 1 0 1 1 0 8 0 amappl4 104 504 0 485 1 0 1 1 0 8 0 amappl3 96 14931 0 14824 5 2 3 4 0 8 0 amappl2 88 1494 0 1424 2 0 2 2 0 8 0 amappl1 80 18775 0 18202 14 1 13 14 0 8 0 amappl 88 22152 0 21987 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 7 0 7 2 2 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 2837 0 2807 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2837 0 2807 1 0 1 1 0 8 0 vmmpekpl 168 22726 0 22658 4 0 4 4 0 8 0 vmmpepl 168 177721 0 175899 142 52 90 102 0 357 6 vmsppl 440 2836 0 2806 6 2 4 5 0 8 0 rwobjpl 56 56529 0 48790 117 7 110 110 0 8 0 pdppl 4096 5681 0 5612 190 119 71 85 0 8 2 pvpl 32 33574 0 0 270 0 270 270 0 265 0 pmappl 248 2836 0 2806 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 783 0 220 17 0 17 17 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff834f3ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff835713b8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835713b8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff835713b8,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416 biowait(fffffd806ed5d240) at biowait+0xc1 sys/kern/vfs_bio.c:1254 bwrite(fffffd806ed5d240) at bwrite+0x2e2 sys/kern/vfs_bio.c:766 ffs_update(fffffd806e403338,1) at ffs_update+0x34c sys/ufs/ffs/ffs_inode.c:111 VOP_FSYNC(fffffd806e1bcb48,fffffd807f7d3618,1,ffff8000ffffdbe8) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 end trace frame: 0xffff80002a06a4a0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff834f3ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff835713b8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835713b8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff835713b8,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416 biowait(fffffd806ed5d240) at biowait+0xc1 sys/kern/vfs_bio.c:1254 bwrite(fffffd806ed5d240) at bwrite+0x2e2 sys/kern/vfs_bio.c:766 ffs_update(fffffd806e403338,1) at ffs_update+0x34c sys/ufs/ffs/ffs_inode.c:111 VOP_FSYNC(fffffd806e1bcb48,fffffd807f7d3618,1,ffff8000ffffdbe8) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffdbe8,ffff80002a06a580,ffff80002a06a4d0) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2926 syscall(ffff80002a06a580) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06a580) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d52a428e420, 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:437 panic(ffffffff830718a1) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffffffff835e6928,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter_read(ffffffff835e6918) at rw_enter_read+0xab sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff800029fe5a50,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800029fe5a50,ffff800029fe5a88,ffff800029fe5ab0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(ffffffff835e6838,7f839d322000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800029fe5bf0,7f839d322238) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800029fe5bf0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pmap_page_remove(fffffd8008699a60) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd8008699a60) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2014 uvm_anfree_list(fffffd8057b84cc0,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806f77b0a8) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff800029fe5e20,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 end trace frame: 0xffff800029fe5e60, count: 0 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830718a1) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffffffff835e6928,1,0) at witness_checkorder+0x1113 sys/kern/subr_witness.c:843 rw_enter_read(ffffffff835e6918) at rw_enter_read+0xab sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff800029fe5a50,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800029fe5a50,ffff800029fe5a88,ffff800029fe5ab0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(ffffffff835e6838,7f839d322000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800029fe5bf0,7f839d322238) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800029fe5bf0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pmap_page_remove(fffffd8008699a60) at pmap_page_remove+0x45d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd8008699a60) at pmap_page_remove+0x45d sys/arch/amd64/amd64/pmap.c:2014 uvm_anfree_list(fffffd8057b84cc0,0) at uvm_anfree_list+0xd6 amap_wipeout(fffffd806f77b0a8) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff800029fe5e20,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 uvm_map_teardown(fffffd807eb77898) at uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 uvmspace_free(fffffd807eb77898) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd91c0) at reaper+0x246 sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -17