panic: pool_do_put: shmpl: double pool_put: 0xfffffd8066b781c0 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 265304 69110 0 0 0 1 syz-executor *380977 69110 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83073b6a) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_put(ffffffff83633a50,fffffd8066b781c0) at pool_do_put+0x1be sys/kern/subr_pool.c:841 pool_put(ffffffff83633a50,fffffd8066b781c0) at pool_put+0xb3 sys/kern/subr_pool.c:799 shm_delete_mapping(fffffd80730b1c68,ffff8000012af008) at shm_delete_mapping+0x1ac shm_deallocate_segment sys/kern/sysv_shm.c:153 [inline] shm_delete_mapping(fffffd80730b1c68,ffff8000012af008) at shm_delete_mapping+0x1ac sys/kern/sysv_shm.c:174 syscall(ffff8000371d8260) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371d8260) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbcaaea8be30, 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: pool_do_put: shmpl: double pool_put: 0xfffffd8066b781c0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83073b6a) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_put(ffffffff83633a50,fffffd8066b781c0) at pool_do_put+0x1be sys/kern/subr_pool.c:841 pool_put(ffffffff83633a50,fffffd8066b781c0) at pool_put+0xb3 sys/kern/subr_pool.c:799 shm_delete_mapping(fffffd80730b1c68,ffff8000012af008) at shm_delete_mapping+0x1ac shm_deallocate_segment sys/kern/sysv_shm.c:153 [inline] shm_delete_mapping(fffffd80730b1c68,ffff8000012af008) at shm_delete_mapping+0x1ac sys/kern/sysv_shm.c:174 syscall(ffff8000371d8260) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371d8260) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbcaaea8be30, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000371d7f90 rbx 0xffffffff83424dbf cpu_info_full_primary+0x2dbf rdx 0 rcx 0xffff8000ffff22a8 rax 0xffffffff83423ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xd3b55d9f22945f24 r11 0xb1b76ff495c3cea1 r12 0xffffffff83424bc0 cpu_info_full_primary+0x2bc0 r13 0 r14 0 r15 0x1 rip 0xffffffff82f8ff85 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000371d7f80 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=380977 pid=69110 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff2a40,0xffff8000ffff2540 process=0xffff8000363a04a8 user=0xffff8000371d3000, vmspace=0xfffffd80730b1c68 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 69110 265304 82157 0 7 0 syz-executor *69110 380977 82157 0 7 0x4000000 syz-executor 69110 352004 82157 0 2 0x4000000 syz-executor 25894 10616 19082 0 3 0x80 fsleep syz-executor 25894 493671 19082 0 3 0x4000080 kqread syz-executor 25894 198693 19082 0 3 0x4000080 fsleep syz-executor 2945 448216 28555 0 3 0x80 fsleep syz-executor 2945 168985 28555 0 3 0x4000080 ttyin syz-executor 68375 335678 4003 0 3 0x80 fsleep syz-executor 68375 237510 4003 0 3 0x4000080 sbwait syz-executor 40383 257175 82557 0 3 0x80 fsleep syz-executor 40383 424501 82557 0 3 0x4000080 rest syz-executor 2791 431695 68785 0 3 0x80 fsleep syz-executor 2791 175788 68785 0 3 0x4000080 lockf syz-executor 2791 428864 68785 0 3 0x4000080 fsleep syz-executor 7002 408351 66512 0 3 0x80 fsleep syz-executor 7002 463128 66512 0 3 0x4000080 semwait syz-executor 66512 204457 83952 0 3 0x82 nanoslp syz-executor 53757 71462 0 0 3 0x14200 bored sosplice 28555 209471 83952 0 3 0x82 nanoslp syz-executor 22239 44937 83952 0 3 0x82 wait syz-executor 19082 197241 83952 0 3 0x82 nanoslp syz-executor 4003 439037 83952 0 3 0x82 nanoslp syz-executor 82157 89463 83952 0 3 0x82 nanoslp syz-executor 68785 4876 83952 0 3 0x82 nanoslp syz-executor 82557 474477 83952 0 3 0x82 nanoslp syz-executor 83952 180647 90649 0 3 0x82 kqread syz-executor 90649 430671 20880 0 3 0x10008a sigsusp ksh 20880 381008 60179 0 3 0x98 kqread sshd-session 60179 250495 43212 0 3 0x92 kqread sshd-session 47609 105128 1 0 3 0x100083 ttyin getty 43212 286186 1 0 3 0x88 kqread sshd 32317 114893 78954 74 3 0x1100092 bpf pflogd 78954 138145 1 0 3 0x80 sbwait pflogd 19193 431772 88151 73 3 0x1100090 kqread syslogd 88151 11365 1 0 3 0x100082 sbwait syslogd 3034 105173 1 0 3 0x100080 kqread resolvd 75398 258175 33472 77 3 0x100092 kqread dhcpleased 61731 405177 33472 77 3 0x100092 kqread dhcpleased 33472 520912 1 0 3 0x80 kqread dhcpleased 48753 68231 0 0 3 0x14200 bored smr 35232 63322 0 0 3 0x14200 pgzero zerothread 71123 55626 0 0 3 0x14200 aiodoned aiodoned 86226 73270 0 0 3 0x14200 syncer update 22510 482107 0 0 3 0x14200 cleaner cleaner 75766 205122 0 0 3 0x14200 reaper reaper 74932 315620 0 0 3 0x14200 pgdaemon pagedaemon 55415 16573 0 0 3 0x14200 bored viomb 51793 32694 0 0 3 0x40014200 acpi0 acpi0 9973 11172 0 0 3 0x40014200 idle1 80964 235107 0 0 3 0x14200 bored softnet3 34648 315426 0 0 3 0x14200 bored softnet2 13007 513976 0 0 3 0x14200 bored softnet1 33873 103561 0 0 3 0x14200 bored softnet0 83450 60879 0 0 3 0x14200 bored systqmp 27281 3095 0 0 3 0x14200 bored systq 35839 379227 0 0 3 0x14200 tmoslp softclockmp 6034 442630 0 0 3 0x40014200 tmoslp softclock 76228 381425 0 0 3 0x40014200 idle0 1 400298 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex shmpl r = 0 (0xffffffff83633a60) #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 pool_put+0x9f sys/kern/subr_pool.c:797 #4 shm_delete_mapping+0x1ac shm_deallocate_segment sys/kern/sysv_shm.c:153 [inline] #4 shm_delete_mapping+0x1ac sys/kern/sysv_shm.c:174 #5 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #5 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Process 69110 (syz-executor) thread 0xffff8000ffff22a8 (380977) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835a1e58) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x278 sys/kern/kern_synch.c:417 #4 rw_enter+0x348 sys/kern/kern_rwlock.c:285 #5 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5257 #6 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #7 shm_delete_mapping+0xa0 sys/kern/sysv_shm.c:170 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff83633a60) #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 pool_put+0x9f sys/kern/subr_pool.c:797 #4 shm_delete_mapping+0x1ac shm_deallocate_segment sys/kern/sysv_shm.c:153 [inline] #4 shm_delete_mapping+0x1ac sys/kern/sysv_shm.c:174 #5 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #5 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Process 69110 (syz-executor) thread 0xffff8000ffff2530 (352004) exclusive rwlock futex r = 0 (0xffffffff8341c4a0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 sys_futex+0x69 sys/kern/sys_futex.c:98 #2 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #2 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #3 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10239 11327K 11506K 166960K 12517 0 pcb 19 14K 16K 166960K 195 0 rtable 200 6K 8K 166960K 465 0 pf 36 18K 20K 166960K 70 0 ifaddr 41 7K 8K 166960K 64 0 ifgroup 55 2K 2K 166960K 81 0 sysctl 2 0K 0K 166960K 2 0 counters 64 36K 36K 166960K 80 0 ioctlops 0 0K 4K 166960K 1544 0 iov 1 12K 28K 166960K 33 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1519 95K 96K 166960K 2269 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 41 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 18 65K 89K 166960K 835 0 sigio 0 0K 0K 166960K 74 0 proc 73 91K 140K 166960K 648 0 subproc 104 6K 6K 166960K 118 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 4 0K 0K 166960K 266 0 in_multi 98 7K 7K 166960K 146 0 ether_multi 1 0K 0K 166960K 4 0 mrt 2 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 578 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 244 73K 87K 166960K 9471 0 UVM aobj 21 2K 2K 166960K 24 0 pinsyscall 43 86K 102K 166960K 1950 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 28 0 NDP 12 0K 2K 166960K 41 0 temp 77 6824K 6904K 166960K 18260 0 kqueue 14 22K 28K 166960K 138 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 67 0 64 1 0 1 1 0 8 0 rtentry 112 152 0 62 4 0 4 4 0 8 0 unpcb 144 461 0 442 4 3 1 4 0 8 0 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpcb 808 283 0 277 8 7 1 8 0 8 0 arp 120 28 0 12 1 0 1 1 0 8 0 inpcb 336 867 0 850 7 5 2 7 0 8 0 nd6 136 33 0 9 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1168 4 0 4 1 1 0 1 0 8 0 pffrag 232 7 0 1 1 0 1 1 0 482 0 pffrnode 88 7 0 1 1 0 1 1 0 8 0 pffrent 40 51 0 45 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 2 0 1 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 78 0 23 1 0 1 1 0 8 0 pfstkey 128 78 0 23 2 0 2 2 0 8 0 pfstate 376 78 0 23 6 0 6 6 0 8 0 pfrule 1344 27 0 17 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 670 0 217 33 4 29 30 0 8 0 art_table 32 671 0 217 4 0 4 4 0 8 0 art_node 16 150 0 69 1 0 1 1 0 8 0 sysvmsgpl 40 100 0 99 1 0 1 1 0 8 0 semapl 112 36 0 26 1 0 1 1 0 8 0 shmpl 112 21 0 3 1 0 1 1 0 8 0 pool(shmpl): free list modified: page 0xfffffd8066b78000; item ordinal 0; addr 0xfffffd8066b781c0 (p 0xfffffd8066b78000); offset 0x1c=0xdeadbeee dirhash 1024 26 0 9 3 0 3 3 0 8 0 dino2pl 256 2840 0 1338 95 0 95 95 0 8 0 ffsino 272 2840 0 1338 102 0 102 102 0 8 0 nchpl 144 4038 0 2344 63 0 63 63 0 8 0 uvmvnodes 80 3593 0 0 74 0 74 74 0 8 0 vnodes 216 3593 0 0 200 0 200 200 0 8 0 namei 1024 13559 0 13559 2 1 1 2 0 8 1 percpumem 16 54 0 8 1 0 1 1 0 8 0 kstatmem 264 40 0 16 2 0 2 2 0 8 0 scsiplug 72 6 0 6 4 3 1 1 0 8 1 scxspl 216 11574 0 11574 12 10 2 8 1 8 2 plimitpl 152 195 0 177 1 0 1 1 0 8 0 sigapl 424 1138 0 1087 7 1 6 7 0 8 0 futexpl 64 15052 0 15044 1 0 1 1 0 8 0 knotepl 120 543 0 0 18 1 17 17 0 8 0 kqueuepl 216 266 0 234 5 0 5 5 0 8 1 pipepl 320 161 0 134 3 0 3 3 0 8 0 fdescpl 496 1118 0 1086 5 0 5 5 0 8 0 filepl 152 6661 0 6307 20 4 16 16 0 8 1 lockfpl 104 364 0 359 2 1 1 2 0 8 0 lockfspl 48 127 0 123 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 40 0 23 1 0 1 1 0 8 0 ucredpl 104 1160 0 1147 1 0 1 1 0 8 0 zombiepl 144 1088 0 1087 1 0 1 1 0 8 0 processpl 1160 1138 0 1087 5 1 4 5 0 8 0 procpl 648 2223 0 2162 6 0 6 6 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 664 1404 0 1365 9 5 4 9 0 8 0 mcl64k 65536 2 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 154 0 0 20 0 20 20 0 8 0 mcl2k 2048 32 0 0 3 0 3 3 0 8 0 mtagpl 96 28 0 0 1 0 1 1 0 8 0 mbufpl 256 236 0 0 15 0 15 15 0 8 0 bufpl 280 3438 0 101 239 0 239 239 0 8 0 anonpl 24 207796 0 204274 62 15 47 47 0 185 18 amapchunkpl 152 31125 0 30601 31 8 23 27 0 158 1 amappl16 200 4723 0 4692 34 24 10 15 0 8 8 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 117 0 105 1 0 1 1 0 8 0 amappl13 176 9 0 9 1 1 0 1 0 8 0 amappl12 168 1781 0 1749 3 1 2 2 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 11 0 11 1 1 0 1 0 8 0 amappl9 144 136 0 135 1 0 1 1 0 8 0 amappl8 136 18 0 16 1 0 1 1 0 8 0 amappl7 128 108 0 95 1 0 1 1 0 8 0 amappl6 120 196 0 194 1 0 1 1 0 8 0 amappl5 112 142 0 130 1 0 1 1 0 8 0 amappl4 104 351 0 331 1 0 1 1 0 8 0 amappl3 96 5680 0 5577 3 0 3 3 0 8 0 amappl2 88 1400 0 1313 3 0 3 3 0 8 0 amappl1 80 10191 0 9619 17 3 14 14 0 8 0 amappl 88 8982 0 8801 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 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 dma512 512 1 0 1 1 0 1 1 0 8 1 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 256 0 256 4 3 1 1 0 8 1 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 23 0 3 1 0 1 1 0 8 0 pool(aobjpl): free list modified: page 0xfffffd806f88e000; item ordinal 0; addr 0xfffffd806f88e168 (p 0xfffffd806f88e000); offset 0xc=0xdead410f uaddrrnd 24 1118 0 1086 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1118 0 1086 1 0 1 1 0 8 0 vmmpekpl 168 9863 0 9821 3 0 3 3 0 8 0 vmmpepl 168 74723 0 72797 106 11 95 95 0 357 9 vmsppl 448 1117 0 1086 6 2 4 5 0 8 0 rwobjpl 56 26455 0 21893 66 1 65 65 0 8 0 pdppl 4096 2243 0 2172 101 30 71 83 0 8 0 pvpl 32 14142 0 0 115 1 114 114 0 265 0 pmappl 248 1117 0 1086 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 406 0 54 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83073b6a) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_put(ffffffff83633a50,fffffd8066b781c0) at pool_do_put+0x1be sys/kern/subr_pool.c:841 pool_put(ffffffff83633a50,fffffd8066b781c0) at pool_put+0xb3 sys/kern/subr_pool.c:799 shm_delete_mapping(fffffd80730b1c68,ffff8000012af008) at shm_delete_mapping+0x1ac shm_deallocate_segment sys/kern/sysv_shm.c:153 [inline] shm_delete_mapping(fffffd80730b1c68,ffff8000012af008) at shm_delete_mapping+0x1ac sys/kern/sysv_shm.c:174 syscall(ffff8000371d8260) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371d8260) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbcaaea8be30, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) 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+0x33 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:158 __mp_lock(ffffffff835a1c50) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a1c50) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 syscall(ffff8000363a9900) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000363a9900) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a6ae2582460, count: 8 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) 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+0x33 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:158 __mp_lock(ffffffff835a1c50) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a1c50) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 syscall(ffff8000363a9900) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000363a9900) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a6ae2582460, count: -7