uvm_fault(0xfffffd8068c5cd00, 0x668, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pppacopen+0x1b5: movq %r13,0x668 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 92718 68465 0 0 0x4000000 0K syz-executor.0 302121 99257 0 0x12 0x88 1 sshd pppacopen(86338,1,2000,ffff800025adcfc8) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800027b04318) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8066439590,1,fffffd807f7d7840,ffff800025adcfc8) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800027b04568,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff800025adcfc8,ffffff9c,20000040,0,0,ffff800027b04750) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027b047c0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027b047c0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf7bc6b86700, count: 8 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: uvm_fault(0xfffffd8068c5cd00, 0x668, 0, 2) -> e ddb{0}> trace pppacopen(86338,1,2000,ffff800025adcfc8) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800027b04318) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8066439590,1,fffffd807f7d7840,ffff800025adcfc8) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800027b04568,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff800025adcfc8,ffffff9c,20000040,0,0,ffff800027b04750) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027b047c0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027b047c0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf7bc6b86700, count: -7 ddb{0}> show registers rdi 0xffff800021271000 rsi 0x11d5 __ALIGN_SIZE+0x1d5 rbp 0xffff800027b04290 rbx 0 rdx 0xffff800021271000 rcx 0x11d4 __ALIGN_SIZE+0x1d4 rax 0xffffffff81c79ee5 pppacopen+0x1b5 r8 0x770 r9 0xfffffd807f7d7840 r10 0x8cbe340c89b1ed2f r11 0xd35961c9ac4bdeb r12 0xfffffd8066439590 r13 0 r14 0x86338 acpi_pdirpa+0x721a0 r15 0xffff800027b04318 rip 0xffffffff81c79ee5 pppacopen+0x1b5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800027b04240 ss 0 pppacopen+0x1b5: movq %r13,0x668 ddb{0}> show proc PROC (syz-executor.0) pid=92718 stat=onproc flags process=0 proc=4000000 pri=17, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800025adc548,0xffffffff8293ceb0 process=0xffff8000ffffa570 user=0xffff800027aff000, vmspace=0xfffffd8068c5cd00 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 68465 238873 93336 0 2 0 syz-executor.0 *68465 92718 93336 0 7 0x4000000 syz-executor.0 12404 178232 7680 0 2 0 syz-executor.1 12404 120510 7680 0 2 0x4000000 syz-executor.1 69896 241561 37401 0 2 0x2 syz-executor.3 24171 134056 0 0 3 0x14200 bored sosplice 80968 501463 37401 0 3 0x82 nanoslp syz-executor.2 7680 443909 37401 0 2 0x482 syz-executor.1 93336 381199 37401 0 3 0x82 nanoslp syz-executor.0 37401 89871 7432 0 3 0x82 thrsleep syz-fuzzer 37401 15169 7432 0 2 0x4000482 syz-fuzzer 37401 341826 7432 0 3 0x4000082 thrsleep syz-fuzzer 37401 488584 7432 0 3 0x4000082 thrsleep syz-fuzzer 37401 192887 7432 0 3 0x4000082 thrsleep syz-fuzzer 37401 5628 7432 0 3 0x4000082 thrsleep syz-fuzzer 37401 208024 7432 0 3 0x4000082 thrsleep syz-fuzzer 37401 54472 7432 0 2 0x4000082 syz-fuzzer 37401 210402 7432 0 2 0x4000082 syz-fuzzer 7432 58441 99257 0 3 0x10008a sigsusp ksh 99257 302121 44392 0 7 0x9a sshd 98510 246441 1 0 3 0x100083 ttyin getty 44392 46314 1 0 3 0x88 poll sshd 98345 142655 41504 74 3 0x100092 bpf pflogd 41504 53781 1 0 3 0x80 netio pflogd 38909 296684 30364 73 3 0x100090 kqread syslogd 30364 237267 1 0 3 0x100082 netio syslogd 44360 21279 1 0 3 0x100080 kqread resolvd 14157 430795 26738 77 3 0x100092 kqread dhcpleased 81718 63837 26738 77 3 0x100092 kqread dhcpleased 26738 386965 1 0 3 0x80 kqread dhcpleased 81840 353200 0 0 3 0x14200 bored smr 44639 336376 0 0 2 0x14200 zerothread 35110 233220 0 0 3 0x14200 aiodoned aiodoned 26177 69418 0 0 3 0x14200 syncer update 49110 309773 0 0 3 0x14200 cleaner cleaner 84683 341126 0 0 3 0x14200 reaper reaper 5552 439091 0 0 3 0x14200 pgdaemon pagedaemon 66469 207117 0 0 3 0x14200 bored viomb 24861 485821 0 0 3 0x40014200 acpi0 acpi0 52844 412300 0 0 3 0x40014200 idle1 64330 80260 0 0 3 0x14200 bored softnet 15767 219507 0 0 3 0x14200 bored systqmp 23590 211442 0 0 3 0x14200 bored systq 32157 212983 0 0 3 0x40014200 bored softclock 84898 86333 0 0 3 0x40014200 idle0 1 67636 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 68465 (syz-executor.0) thread 0xffff800025adcfc8 (92718) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828f9c10) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416 #3 sleep_finish+0x1b2 sys/kern/kern_synch.c:433 #4 tsleep+0x12c sys/kern/kern_synch.c:158 #5 getblk+0x13c sys/kern/vfs_bio.c:1031 #6 bread+0x3a bio_doread sys/kern/vfs_bio.c:436 [inline] #6 bread+0x3a sys/kern/vfs_bio.c:481 #7 ffs_vget+0x204 sys/ufs/ffs/ffs_vfsops.c:1364 #8 ufs_lookup+0x122c sys/ufs/ufs/ufs_lookup.c:582 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 vn_open+0x105 sys/kern/vfs_vnops.c:146 #13 doopenat+0x26a sys/kern/vfs_syscalls.c:1128 #14 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #14 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #15 Xsyscall+0x128 Process 12404 (syz-executor.1) thread 0xffff800025add508 (120510) exclusive rrwlock inode r = 0 (0xfffffd8066499928) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x1351 sys/ufs/ufs/ufs_lookup.c:529 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dorenameat+0x100 sys/kern/vfs_syscalls.c:2991 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80664990a8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 dorenameat+0x100 sys/kern/vfs_syscalls.c:2991 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 Process 69896 (syz-executor.3) thread 0xffff800025adc008 (241561) exclusive rrwlock inode r = 0 (0xfffffd80664992c8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vn_closefile+0xc6 vn_close sys/kern/vfs_vnops.c:298 [inline] #5 vn_closefile+0xc6 sys/kern/vfs_vnops.c:624 #6 fdrop+0xc7 sys/kern/kern_descrip.c:1279 #7 closef+0x11c sys/kern/kern_descrip.c:1263 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10166 6466K 7045K 78643K 12118 0 pcb 13 8K 8K 78643K 31 0 rtable 152 4K 4K 78643K 316 0 ifaddr 59 13K 13K 78643K 94 0 sysctl 2 0K 0K 78643K 2 0 counters 48 34K 34K 78643K 60 0 ioctlops 0 0K 4K 78643K 1581 0 iov 0 0K 16K 78643K 137 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1238 78K 78K 78643K 1665 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 17K 78643K 33 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 187 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 8 25K 49K 78643K 1146 0 sigio 0 0K 0K 78643K 5 0 proc 70 87K 111K 78643K 461 0 subproc 52 3K 3K 78643K 65 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 64 0 in_multi 55 3K 3K 78643K 92 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 0K 0K 78643K 20 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 2K 78643K 527 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 213 108K 114K 78643K 15053 0 UVM aobj 65 3K 3K 78643K 65 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 73 0 NDP 8 0K 1K 78643K 24 0 temp 62 4192K 4257K 78643K 6277 0 kqueue 10 14K 18K 78643K 38 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 117 0 114 1 0 1 1 0 8 0 rtentry 112 87 0 20 2 0 2 2 0 8 0 unpcb 136 133 0 118 1 0 1 1 0 8 0 syncache 296 5 0 5 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 136 0 114 7 4 3 4 0 8 0 arp 120 13 0 2 1 0 1 1 0 8 0 inpcb 304 488 0 479 2 0 2 2 0 8 1 rttmr 72 8 0 8 2 1 1 1 0 8 1 nd6 48 15 0 3 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 5 0 1 1 0 1 1 0 8 0 pfstscr 40 29 0 29 2 2 0 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 4 0 3 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 pfstitem 24 17 0 9 1 0 1 1 0 8 0 pfstkey 112 45 0 37 1 0 1 1 0 8 0 pfstate 320 45 0 37 2 1 1 2 0 8 0 pfrule 1360 25 0 20 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 321 0 44 18 0 18 18 0 8 0 art_table 32 322 0 44 3 0 3 3 0 8 0 art_node 16 86 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 0 1 0 1 1 0 8 0 semupl 112 10 0 10 1 1 0 1 0 8 0 semapl 112 185 0 175 1 0 1 1 0 8 0 shmpl 112 62 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3049 0 1622 90 0 90 90 0 8 0 ffsino 272 3049 0 1622 96 0 96 96 0 8 0 nchpl 144 4744 0 3149 61 0 61 61 0 8 0 uvmvnodes 80 3309 0 0 68 0 68 68 0 8 0 vnodes 224 3309 0 0 195 0 195 195 0 8 0 namei 1024 12750 0 12748 1 0 1 1 0 8 0 percpumem 16 42 0 6 1 0 1 1 0 8 0 vcpupl 2048 4 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 0 1 0 1 1 0 8 0 scxspl 216 14230 0 14230 11 10 1 8 0 8 1 plimitpl 152 81 0 70 1 0 1 1 0 8 0 sigapl 424 1382 0 1346 5 0 5 5 0 8 0 futexpl 64 10097 0 10097 1 0 1 1 0 8 1 knotepl 112 70 0 0 2 0 2 2 0 8 0 kqueuepl 216 122 0 116 1 0 1 1 0 8 0 pipepl 336 124 0 108 2 0 2 2 0 8 0 fdescpl 496 1367 0 1346 4 1 3 4 0 8 0 filepl 152 5158 0 5005 7 0 7 7 0 8 1 lockfpl 104 436 0 434 1 0 1 1 0 8 0 lockfspl 48 161 0 159 1 0 1 1 0 8 0 sessionpl 144 21 0 8 1 0 1 1 0 8 0 pgrppl 48 21 0 8 1 0 1 1 0 8 0 ucredpl 96 1130 0 1118 1 0 1 1 0 8 0 zombiepl 144 1346 0 1345 1 0 1 1 0 8 0 processpl 1064 1382 0 1345 3 0 3 3 0 8 0 procpl 672 2668 0 2621 5 0 5 5 0 8 0 sosppl 168 27 0 27 1 1 0 1 0 8 0 sockpl 480 742 0 716 5 1 4 5 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 118 0 0 14 0 14 14 0 8 0 mtagpl 96 52 0 0 2 0 2 2 0 8 0 mbufpl 256 422 0 0 25 0 25 25 0 8 0 bufpl 288 6090 0 143 425 0 425 425 0 8 0 anonpl 24 392533 0 385602 110 31 79 93 0 186 20 amapchunkpl 152 39141 0 38690 44 17 27 41 0 158 7 amappl16 200 6572 0 6426 57 44 13 31 0 8 2 amappl15 192 388 0 384 1 0 1 1 0 8 0 amappl14 184 256 0 255 1 0 1 1 0 8 0 amappl13 176 50 0 47 1 0 1 1 0 8 0 amappl12 168 17 0 12 1 0 1 1 0 8 0 amappl11 160 212 0 198 1 0 1 1 0 8 0 amappl10 152 49 0 41 1 0 1 1 0 8 0 amappl9 144 756 0 752 1 0 1 1 0 8 0 amappl8 136 384 0 352 3 1 2 2 0 8 0 amappl7 128 83 0 70 1 0 1 1 0 8 0 amappl6 120 428 0 412 1 0 1 1 0 8 0 amappl5 112 1222 0 1202 1 0 1 1 0 8 0 amappl4 104 797 0 776 1 0 1 1 0 8 0 amappl3 96 163 0 147 1 0 1 1 0 8 0 amappl2 88 396 0 355 2 1 1 2 0 8 0 amappl1 80 26314 0 25825 14 3 11 13 0 8 0 amappl 88 14664 0 14509 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 64 0 0 2 0 2 2 0 8 0 uaddrrnd 24 1371 0 1346 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1371 0 1346 1 0 1 1 0 8 0 vmmpekpl 168 11528 0 11487 4 1 3 3 0 8 0 vmmpepl 168 124649 0 123111 111 25 86 94 0 357 10 vmsppl 368 1370 0 1346 3 0 3 3 0 8 0 rwobjpl 56 35991 0 31673 63 1 62 63 0 8 0 pdppl 4096 2750 0 2696 78 20 58 62 0 8 4 pvpl 32 832912 0 822370 179 28 151 167 0 265 44 pmappl 248 1370 0 1346 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 773 0 27 22 0 22 22 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pppacopen(86338,1,2000,ffff800025adcfc8) at pppacopen+0x1b5 sys/net/if_pppx.c:1020 spec_open(ffff800027b04318) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd8066439590,1,fffffd807f7d7840,ffff800025adcfc8) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff800027b04568,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff800025adcfc8,ffffff9c,20000040,0,0,ffff800027b04750) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff800027b047c0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027b047c0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf7bc6b86700, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a 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+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x34 sys/dev/kcov.c:154 __mp_lock(ffffffff828f9a08) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828f9a08) at __mp_lock+0x133 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828f9a08,2) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 sleep_finish(ffff8000211c4910,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433 tsleep(ffffffff828d0ee8,118,ffffffff824b910a,0) at tsleep+0x12c sys/kern/kern_synch.c:158 doppoll(ffff8000ffff6550,e4fecc5f400,4,0,ffff8000211c4a94,ffff8000211c4b70) at doppoll+0x552 sys_ppoll(ffff8000ffff6550,ffff8000211c4b10,ffff8000211c4b70) at sys_ppoll+0x133 sys/kern/sys_generic.c:1019 syscall(ffff8000211c4be0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211c4be0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe28a0, count: 2 ddb{1}> trace x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a 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+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x34 sys/dev/kcov.c:154 __mp_lock(ffffffff828f9a08) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828f9a08) at __mp_lock+0x133 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828f9a08,2) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 sleep_finish(ffff8000211c4910,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433 tsleep(ffffffff828d0ee8,118,ffffffff824b910a,0) at tsleep+0x12c sys/kern/kern_synch.c:158 doppoll(ffff8000ffff6550,e4fecc5f400,4,0,ffff8000211c4a94,ffff8000211c4b70) at doppoll+0x552 sys_ppoll(ffff8000ffff6550,ffff8000211c4b10,ffff8000211c4b70) at sys_ppoll+0x133 sys/kern/sys_generic.c:1019 syscall(ffff8000211c4be0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211c4be0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe28a0, count: -13