panic: kernel diagnostic assertion "!ISSET(p->p_flag, P_WSLEEP) || p->p_stat == SSTOP" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_sched.c", line 265 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 103008 75932 32767 0x10 0 1 syz-executor.5 *132269 96752 32767 0x10 0 0K syz-executor.4 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82799270) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281a224,ffffffff82765f2c,109,ffffffff82841ab8) at __assert+0x29 sys/kern/subr_prf.c:157 setrunqueue(ffff800020d58ff0,ffff800021268030,3a) at setrunqueue+0x2e5 sys/kern/kern_sched.c:263 schedcpu(ffffffff82d83998) at schedcpu+0x28b sys/kern/sched_bsd.c:236 timeout_run(ffffffff82d83998) at timeout_run+0xd0 sys/kern/kern_timeout.c:640 softclock_process_tick_timeout(ffffffff82d83998,0) at softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 softclock(0) at softclock+0x130 sys/kern/kern_timeout.c:710 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x78e9b84adbb0, count: 5 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: kernel diagnostic assertion "!ISSET(p->p_flag, P_WSLEEP) || p->p_stat == SSTOP" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_sched.c", line 265 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82799270) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281a224,ffffffff82765f2c,109,ffffffff82841ab8) at __assert+0x29 sys/kern/subr_prf.c:157 setrunqueue(ffff800020d58ff0,ffff800021268030,3a) at setrunqueue+0x2e5 sys/kern/kern_sched.c:263 schedcpu(ffffffff82d83998) at schedcpu+0x28b sys/kern/sched_bsd.c:236 timeout_run(ffffffff82d83998) at timeout_run+0xd0 sys/kern/kern_timeout.c:640 softclock_process_tick_timeout(ffffffff82d83998,0) at softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 softclock(0) at softclock+0x130 sys/kern/kern_timeout.c:710 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x78e9b84adbb0, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800026167640 rbx 0xffffffff82b87b8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0xffff800021268b10 rax 0xffffffff82b86ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x11ccb7e2ce75000c r11 0x5f16ef41ec8545ab r12 0xffffffff82b87990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff81dccbec db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800026167630 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.4) pid=132269 stat=onproc flags process=10 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800021268dc8,0xffff8000212d58c0 process=0xffff800021221d60 user=0xffff800026162000, vmspace=0xfffffd806ac7e5a0 estcpu=14, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 75932 103008 68605 32767 7 0x10 syz-executor.5 75932 217215 68605 32767 3 0x4000090 netio syz-executor.5 53265 218817 31212 32767 2 0x10 syz-executor.1 53265 447427 31212 32767 3 0x4000090 netio syz-executor.1 *96752 132269 51206 32767 7 0x10 syz-executor.4 96752 66596 51206 32767 2 0x4000010 syz-executor.4 21387 354994 75032 32767 2 0x10 syz-executor.3 95717 392956 82436 32767 2 0x10 syz-executor.7 95717 213767 82436 32767 3 0x4000090 fsleep syz-executor.7 55552 248587 60704 32767 3 0x3810 suspend syz-executor.6 55552 393178 60704 32767 2 0x40818b0 syz-executor.6 16077 361801 36297 32767 2 0x10 syz-executor.2 16077 354816 36297 32767 2 0x4000010 syz-executor.2 95386 337411 55685 32767 2 0x10 syz-executor.0 95386 489339 55685 32767 3 0x4000090 fsleep syz-executor.0 78568 265433 0 0 3 0x14200 bored sosplice 60704 227934 60359 32767 3 0x90 nanoslp syz-executor.6 60359 55023 92269 0 3 0x82 wait syz-executor.6 36297 112706 96449 32767 3 0x90 nanoslp syz-executor.2 96449 356096 92269 0 3 0x82 wait syz-executor.2 75032 92002 39967 32767 3 0x90 nanoslp syz-executor.3 82436 177754 42101 32767 3 0x90 nanoslp syz-executor.7 42101 504466 92269 0 3 0x82 wait syz-executor.7 51206 229940 63492 32767 2 0x10 syz-executor.4 63492 503240 92269 0 3 0x82 wait syz-executor.4 39967 378550 92269 0 3 0x82 wait syz-executor.3 68605 132558 11856 32767 3 0x90 nanoslp syz-executor.5 11856 9511 92269 0 3 0x82 wait syz-executor.5 31212 191026 21704 32767 3 0x90 nanoslp syz-executor.1 21704 513190 92269 0 3 0x82 wait syz-executor.1 55685 177043 98108 32767 3 0x90 nanoslp syz-executor.0 98108 262651 92269 0 3 0x82 wait syz-executor.0 92269 416989 38661 0 3 0x82 wait syz-fuzzer 92269 65829 38661 0 3 0x4000082 thrsleep syz-fuzzer 92269 207205 38661 0 3 0x4000082 wait syz-fuzzer 92269 491499 38661 0 3 0x4000082 thrsleep syz-fuzzer 92269 124618 38661 0 3 0x4000082 wait syz-fuzzer 92269 120931 38661 0 3 0x4000082 wait syz-fuzzer 92269 314667 38661 0 3 0x4000082 thrsleep syz-fuzzer 92269 486622 38661 0 3 0x4000082 kqread syz-fuzzer 92269 490959 38661 0 3 0x4000082 thrsleep syz-fuzzer 92269 497060 38661 0 3 0x4000082 wait syz-fuzzer 92269 350470 38661 0 3 0x4000082 thrsleep syz-fuzzer 92269 275009 38661 0 3 0x4000082 wait syz-fuzzer 92269 224302 38661 0 3 0x4000082 wait syz-fuzzer 92269 480177 38661 0 3 0x4000082 wait syz-fuzzer 92269 93032 38661 0 3 0x4000082 thrsleep syz-fuzzer 38661 77571 21937 0 3 0x10008a sigsusp ksh 21937 316479 40935 0 3 0x9a kqread sshd 75788 25714 1 0 3 0x100083 ttyin getty 40935 48637 1 0 3 0x88 kqread sshd 61745 52582 82141 73 3 0x1100010 ffs_fsync syslogd 82141 165019 1 0 3 0x100082 netio syslogd 12643 1910 1 0 3 0x100080 kqread resolvd 80674 16311 48947 77 3 0x100092 kqread dhcpleased 52309 487123 48947 77 3 0x100092 kqread dhcpleased 48947 361007 1 0 3 0x80 kqread dhcpleased 22935 70923 0 0 3 0x14200 bored smr 87882 331130 0 0 2 0x14200 zerothread 3740 277697 0 0 3 0x14200 aiodoned aiodoned 13092 255537 0 0 3 0x14200 syncer update 13109 238173 0 0 3 0x14200 cleaner cleaner 70289 462084 0 0 3 0x14200 reaper reaper 48855 483498 0 0 3 0x14200 pgdaemon pagedaemon 44918 363312 0 0 3 0x14200 bored viomb 62313 223947 0 0 3 0x40014200 acpi0 acpi0 5144 456844 0 0 3 0x40014200 idle1 76698 158974 0 0 3 0x14200 bored softnet3 52058 210626 0 0 3 0x14200 bored softnet2 86103 284042 0 0 3 0x14200 bored softnet1 80809 140586 0 0 3 0x14200 bored softnet0 56079 27480 0 0 3 0x14200 bored systqmp 41877 42585 0 0 3 0x14200 bored systq 24322 135997 0 0 3 0x40014200 bored softclock 68052 269669 0 0 3 0x40014200 idle0 1 194677 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive sched_lock &sched_lock r = 0 (0xffffffff82d83950) #0 witness_lock+0x447 #1 schedcpu+0x119 sys/kern/sched_bsd.c:219 #2 timeout_run+0xd0 sys/kern/kern_timeout.c:640 #3 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 #4 softclock+0x130 sys/kern/kern_timeout.c:710 #5 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #6 Xsoftclock+0x27 shared mutex timeout r = 0 (0xffffffff82b63130) #0 witness_lock+0x447 #1 timeout_run+0xbb sys/kern/kern_timeout.c:636 #2 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 #3 softclock+0x130 sys/kern/kern_timeout.c:710 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x27 Process 96752 (syz-executor.4) thread 0xffff800021268b10 (132269) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82ce9840) #0 witness_lock+0x447 #1 softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 #2 Xsoftclock+0x27 exclusive sched_lock &sched_lock r = 0 (0xffffffff82d83950) #0 witness_lock+0x447 #1 schedcpu+0x119 sys/kern/sched_bsd.c:219 #2 timeout_run+0xd0 sys/kern/kern_timeout.c:640 #3 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 #4 softclock+0x130 sys/kern/kern_timeout.c:710 #5 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #6 Xsoftclock+0x27 shared mutex timeout r = 0 (0xffffffff82b63130) #0 witness_lock+0x447 #1 timeout_run+0xbb sys/kern/kern_timeout.c:636 #2 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 #3 softclock+0x130 sys/kern/kern_timeout.c:710 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x27 Process 61745 (syslogd) thread 0xffff8000211ad880 (52582) exclusive rrwlock inode r = 0 (0xfffffd806e5eae70) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0xf9 sys/kern/vfs_syscalls.c:2896 #6 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #6 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10183 6408K 6419K 78643K 11273 0 pcb 13 8K 8K 78643K 13 0 rtable 234 6K 6K 78643K 470 0 pf 29 8K 8K 78643K 37 0 ifaddr 44 15K 15K 78643K 62 0 ifgroup 50 2K 2K 78643K 66 0 counters 60 35K 35K 78643K 68 0 ioctlops 0 0K 2K 78643K 37 0 iov 2 0K 13K 78643K 355 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1278 80K 80K 78643K 1520 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 20 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 116 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 26 97K 121K 78643K 1076 0 sigio 0 0K 0K 78643K 4 0 proc 56 78K 127K 78643K 662 0 subproc 104 6K 6K 78643K 156 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 43 0 in_multi 99 7K 7K 78643K 158 0 ether_multi 1 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 79 360K 360K 78643K 79 0 exec 0 0K 1K 78643K 498 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 8 62K 64K 78643K 10 0 UVM amap 363 87K 100K 78643K 12901 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 19 0 NDP 11 0K 2K 78643K 39 0 temp 73 5872K 5936K 78643K 6520 0 kqueue 12 18K 26K 78643K 110 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 51 0 48 1 0 1 1 0 8 0 rtentry 112 156 0 46 4 0 4 4 0 8 0 unpcb 144 1332 0 1315 11 10 1 6 0 8 0 syncache 296 11 0 11 3 3 0 1 0 8 0 tcpqe 32 89 0 89 2 2 0 1 0 8 0 tcpcb 808 108 0 102 2 1 1 2 0 8 0 arp 120 26 0 8 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 35 0 0 1 0 1 1 0 8 0 inpcb 368 363 0 354 9 8 1 7 0 8 0 nd6 136 37 0 13 1 0 1 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 630 0 178 29 0 29 29 0 8 0 art_table 32 631 0 178 4 0 4 4 0 8 0 art_node 16 155 0 55 1 0 1 1 0 8 0 semapl 112 108 0 98 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2645 0 1204 91 0 91 91 0 8 0 ffsino 272 2645 0 1204 97 0 97 97 0 8 0 nchpl 144 4036 0 2394 63 0 63 63 0 8 0 uvmvnodes 80 2810 0 0 58 0 58 58 0 8 0 vnodes 216 2810 0 0 157 0 157 157 0 8 0 namei 1024 13627 0 13627 3 2 1 3 0 8 1 percpumem 16 47 0 4 1 0 1 1 0 8 0 kstatmem 264 30 0 8 2 0 2 2 0 8 0 scxspl 216 12970 0 12969 12 11 1 8 1 8 0 plimitpl 152 194 0 168 3 1 2 2 0 8 1 sigapl 424 1352 0 1297 7 0 7 7 0 8 0 futexpl 64 6411 0 6408 2 1 1 1 0 8 0 knotepl 120 227 0 0 7 0 7 7 0 8 0 kqueuepl 216 363 0 354 9 8 1 5 0 8 0 pipepl 320 271 0 243 8 4 4 8 0 8 1 fdescpl 496 1334 0 1297 7 1 6 6 0 8 0 filepl 152 7264 0 7024 25 11 14 18 0 8 4 lockfpl 104 55 0 52 1 0 1 1 0 8 0 lockfspl 48 29 0 26 1 0 1 1 0 8 0 sessionpl 144 27 0 11 1 0 1 1 0 8 0 pgrppl 48 30 0 14 1 0 1 1 0 8 0 ucredpl 104 1095 0 1077 1 0 1 1 0 8 0 zombiepl 144 1297 0 1297 1 0 1 1 0 8 1 processpl 1072 1352 0 1297 5 1 4 5 0 8 0 procpl 696 3251 0 3175 11 3 8 9 0 8 0 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 488 1758 0 1729 56 49 7 22 0 8 3 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 14 0 0 2 0 2 2 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 263 0 0 33 0 33 33 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 1031 0 0 61 0 61 61 0 8 0 bufpl 288 5951 0 145 415 0 415 415 0 8 0 anonpl 24 299823 0 289009 120 23 97 97 0 186 25 amapchunkpl 152 42199 0 41287 54 5 49 49 0 158 9 amappl16 200 7766 0 7499 26 10 16 26 0 8 0 amappl15 192 13 0 13 1 1 0 1 0 8 0 amappl14 184 175 0 163 2 1 1 2 0 8 0 amappl13 176 12 0 12 1 1 0 1 0 8 0 amappl12 168 2011 0 1974 2 0 2 2 0 8 0 amappl11 160 69 0 57 1 0 1 1 0 8 0 amappl10 152 39 0 29 1 0 1 1 0 8 0 amappl9 144 192 0 190 2 1 1 2 0 8 0 amappl8 136 279 0 227 2 0 2 2 0 8 0 amappl7 128 85 0 67 1 0 1 1 0 8 0 amappl6 120 268 0 251 2 1 1 2 0 8 0 amappl5 112 184 0 178 1 0 1 1 0 8 0 amappl4 104 644 0 604 2 0 2 2 0 8 0 amappl3 96 8245 0 8141 6 3 3 4 0 8 0 amappl2 88 1569 0 1499 4 2 2 3 0 8 0 amappl1 80 13172 0 12650 22 9 13 22 0 8 0 amappl 88 12354 0 12099 7 0 7 7 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 1334 0 1297 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1334 0 1297 1 0 1 1 0 8 0 vmmpekpl 168 16310 0 16250 4 0 4 4 0 8 0 vmmpepl 168 102403 0 100024 138 31 107 122 0 357 1 vmsppl 464 1333 0 1297 7 1 6 6 0 8 0 rwobjpl 56 36073 0 31875 61 1 60 60 0 8 0 pdppl 4096 2676 0 2594 148 66 82 94 0 8 0 pvpl 32 669456 0 652352 345 71 274 343 0 265 129 pmappl 248 1333 0 1297 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 901 0 79 24 0 24 24 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(ffffffff82799270) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281a224,ffffffff82765f2c,109,ffffffff82841ab8) at __assert+0x29 sys/kern/subr_prf.c:157 setrunqueue(ffff800020d58ff0,ffff800021268030,3a) at setrunqueue+0x2e5 sys/kern/kern_sched.c:263 schedcpu(ffffffff82d83998) at schedcpu+0x28b sys/kern/sched_bsd.c:236 timeout_run(ffffffff82d83998) at timeout_run+0xd0 sys/kern/kern_timeout.c:640 softclock_process_tick_timeout(ffffffff82d83998,0) at softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 softclock(0) at softclock+0x130 sys/kern/kern_timeout.c:710 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x78e9b84adbb0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800020d58ff0) 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+0x29 kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x29 sys/dev/kcov.c:158 __mp_lock(ffffffff82d83748) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d83748) at __mp_lock+0x133 sys/kern/kern_lock.c:147 preempt() at preempt+0x37 sys/kern/sched_bsd.c:297 ast(ffff80002e42bef0) at ast+0x109 mi_ast sys/sys/syscall_mi.h:192 [inline] ast(ffff80002e42bef0) at ast+0x109 sys/arch/amd64/amd64/trap.c:541 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x7c74b85bbbb0, count: 7 ddb{1}> trace x86_ipi_db(ffff800020d58ff0) 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+0x29 kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x29 sys/dev/kcov.c:158 __mp_lock(ffffffff82d83748) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d83748) at __mp_lock+0x133 sys/kern/kern_lock.c:147 preempt() at preempt+0x37 sys/kern/sched_bsd.c:297 ast(ffff80002e42bef0) at ast+0x109 mi_ast sys/sys/syscall_mi.h:192 [inline] ast(ffff80002e42bef0) at ast+0x109 sys/arch/amd64/amd64/trap.c:541 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x7c74b85bbbb0, count: -8