panic: pool_do_get: shmpl free list modified: page 0xfffffd806c8d3000; item addr 0xfffffd806c8d3930; offset 0x40=0x69da3945 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 503136 85748 32767 0x10 0 1 syz-executor *520539 85748 32767 0x10 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834406d6) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83969f98,1,ffff80003c4113c8) at pool_do_get+0x5df pool_get(ffffffff83969f98,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c40ba18,ffff80003c411620,56,ffff80003c411570) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c40ba18,ffff80003c411620,ffff80003c411570) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c411620) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c411620) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x55e0bde1be0, 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: pool_do_get: shmpl free list modified: page 0xfffffd806c8d3000; item addr 0xfffffd806c8d3930; offset 0x40=0x69da3945 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834406d6) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83969f98,1,ffff80003c4113c8) at pool_do_get+0x5df pool_get(ffffffff83969f98,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c40ba18,ffff80003c411620,56,ffff80003c411570) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c40ba18,ffff80003c411620,ffff80003c411570) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c411620) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c411620) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x55e0bde1be0, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c4111f0 rbx 0xffffffff8389ee07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff80003c40ba18 rax 0xffffffff8389dff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x559d51344b8583bb r11 0xc61dff4d5bfaa232 r12 0xffffffff8389ec08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff81bb2405 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c4111e0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=520539 pid=85748 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c40b4e8,0xffffffff83a4c6a0 process=0xffff80003c3dd830 user=0xffff80003c40c000, vmspace=0xfffffd800f889400 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 85748 503136 93864 32767 7 0x10 syz-executor 85748 394260 93864 32767 3 0x4000090 fsleep syz-executor 85748 218729 93864 32767 3 0x4000090 fsleep syz-executor *85748 520539 93864 32767 7 0x4000010 syz-executor 68118 255628 55834 32767 3 0x90 nanoslp syz-executor 68118 97655 55834 32767 3 0x4000090 ttyin syz-executor 68118 154330 55834 32767 3 0x4000090 fsleep syz-executor 67067 369872 52300 32767 3 0x90 nanoslp syz-executor 67067 412945 52300 32767 3 0x4000098 kqread syz-executor 67067 320003 52300 32767 3 0x4000090 fsleep syz-executor 60672 455102 94203 32767 3 0x90 nanoslp syz-executor 60672 479896 94203 32767 3 0x4000090 netcon syz-executor 60672 249455 94203 32767 3 0x4000090 fsleep syz-executor 83193 110631 92304 32767 3 0x90 nanoslp syz-executor 83193 368418 92304 32767 3 0x4000090 nanoslp syz-executor 83193 25504 92304 32767 3 0x4000090 fsleep syz-executor 83193 424862 92304 32767 3 0x4000090 fsleep syz-executor 92304 321413 84692 32767 3 0x90 nanoslp syz-executor 88947 275745 20753 32767 3 0x90 wait syz-executor 94203 221357 43770 32767 3 0x90 nanoslp syz-executor 4960 153966 7820 32767 3 0x10 biowait syz-executor 55834 236155 85976 32767 3 0x90 nanoslp syz-executor 52300 108685 72431 32767 3 0x90 nanoslp syz-executor 53311 50123 58203 32767 3 0x90 nanoslp syz-executor 93864 380829 28299 32767 3 0x90 nanoslp syz-executor 43770 6237 87643 0 3 0x82 wait syz-executor 85976 294966 87643 0 3 0x82 wait syz-executor 72431 158381 87643 0 3 0x82 wait syz-executor 58203 295209 87643 0 3 0x82 wait syz-executor 7820 175027 87643 0 3 0x82 wait syz-executor 20753 384661 87643 0 3 0x82 wait syz-executor 28299 37159 87643 0 3 0x82 wait syz-executor 84692 258832 87643 0 3 0x82 wait syz-executor 87643 152454 93320 0 3 0x82 kqread syz-executor 93320 217931 53912 0 3 0x10008a sigsusp ksh 53912 138916 73292 0 3 0x98 kqread sshd-session 73292 290061 53700 0 3 0x92 kqread sshd-session 16063 19382 1 0 3 0x100083 ttyin getty 53700 167132 1 0 3 0x88 kqread sshd 7401 94700 37985 73 3 0x1100090 kqread syslogd 37985 353537 1 0 3 0x100082 sbwait syslogd 24257 504779 1 0 3 0x100080 kqread resolvd 31542 232532 4316 77 3 0x100092 kqread dhcpleased 62356 433024 4316 77 3 0x100092 kqread dhcpleased 4316 116598 1 0 3 0x80 kqread dhcpleased 73891 114232 0 0 3 0x14200 bored smr 89614 145058 0 0 3 0x14200 pgzero zerothread 14681 65726 0 0 3 0x14200 aiodoned aiodoned 21280 204176 0 0 3 0x14200 syncer update 66115 480776 0 0 3 0x14200 cleaner cleaner 64622 100137 0 0 3 0x14200 reaper reaper 86759 141552 0 0 3 0x14200 pgdaemon pagedaemon 31263 180110 0 0 3 0x14200 bored viomb 94919 60647 0 0 3 0x40014200 acpi0 acpi0 82330 421610 0 0 3 0x40014200 idle1 29664 205190 0 0 3 0x14200 bored softnet1 64515 196399 0 0 3 0x14200 bored softnet0 85677 474236 0 0 3 0x14200 bored systqmp 69080 466576 0 0 3 0x14200 bored systq 98269 238712 0 0 3 0x14200 tmoslp softclockmp 99381 211268 0 0 3 0x40014200 tmoslp softclock 79099 355485 0 0 3 0x40014200 idle0 1 117348 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 (0xffffffff83969fb0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pool_get+0x124 sys/kern/subr_pool.c:585 #3 shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 #4 sys_shmget+0x195 sys/kern/sysv_shm.c:482 #5 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 Process 85748 (syz-executor) thread 0xffff80003c40ba18 (520539) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a69940) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 exclusive mutex shmpl r = 0 (0xffffffff83969fb0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pool_get+0x124 sys/kern/subr_pool.c:585 #3 shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 #4 sys_shmget+0x195 sys/kern/sysv_shm.c:482 #5 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 Process 4960 (syz-executor) thread 0xffff8000fffefca0 (153966) exclusive rrwlock inode r = 0 (0xfffffd806c561d78) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3143 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d280428) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3128 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11060 12019K 12034K 166960K 12151 0 pcb 17 12K 12K 166960K 17 0 rtable 243 6K 7K 166960K 407 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 6 0 counters 70 37K 37K 166960K 70 0 ioctlops 0 0K 4K 166960K 34 0 iov 0 0K 16K 166960K 12 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1287 81K 81K 166960K 1365 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 17 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 25 93K 121K 166960K 369 0 sigio 0 0K 0K 166960K 2 0 proc 58 99K 147K 166960K 539 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 35 0 in_multi 99 7K 7K 166960K 112 0 ether_multi 1 0K 0K 166960K 3 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 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 392 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 264 152K 174K 166960K 5204 0 UVM aobj 10 2K 3K 166960K 13 0 pinsyscall 46 92K 112K 166960K 1493 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 15 0 NDP 11 0K 2K 166960K 27 0 temp 47 9072K 9137K 166960K 4909 0 kqueue 14 22K 28K 166960K 68 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 59 0 55 1 0 1 1 0 8 0 rtentry 176 115 0 2 6 0 6 6 0 8 0 unpcb 144 294 0 279 1 0 1 1 0 8 0 syncache 336 9 0 9 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 121 0 112 2 0 2 2 0 8 1 arp 136 18 0 0 1 0 1 1 0 8 0 ipq 40 5 0 1 1 0 1 1 0 8 0 ipqe 40 9 0 4 1 0 1 1 0 8 0 inpcb 328 425 0 412 7 0 7 7 0 8 5 nd6 152 28 0 1 2 0 2 2 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 491 0 13 31 0 31 31 0 8 0 art_table 40 492 0 13 5 0 5 5 0 8 0 art_node 32 115 0 12 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 10 0 3 1 0 1 1 0 8 0 pool(0xffffffff83969f98:shmpl): page inconsistency: page 0xfffffd806c8d3000; 27 on list, 7 missing, 35 items per page dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1883 0 424 92 0 92 92 0 8 0 ffsino 296 1883 0 424 113 0 113 113 0 8 0 nchpl 144 2429 0 740 63 0 63 63 0 8 0 vnodes 216 1964 0 0 110 0 110 110 0 8 0 namei 1024 7399 0 7398 1 0 1 1 0 8 0 percpumem 16 50 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 8181 0 8180 11 3 8 8 1 8 7 plimitpl 152 109 0 83 2 0 2 2 0 8 0 sigapl 424 671 0 618 7 0 7 7 0 8 0 knotepl 120 442 0 0 14 0 14 14 0 8 0 kqueuepl 224 92 0 78 1 0 1 1 0 8 0 pipepl 344 137 0 110 3 0 3 3 0 8 0 fdescpl 528 655 0 618 3 0 3 3 0 8 0 filepl 160 3017 0 2792 13 0 13 13 0 8 3 lockfpl 104 118 0 116 1 0 1 1 0 8 0 lockfspl 48 26 0 24 1 0 1 1 0 8 0 sessionpl 144 34 0 18 1 0 1 1 0 8 0 pgrppl 48 44 0 20 1 0 1 1 0 8 0 ucredpl 104 423 0 404 1 0 1 1 0 8 0 zombiepl 144 620 0 618 1 0 1 1 0 8 0 processpl 1232 671 0 618 5 0 5 5 0 8 0 procpl 664 1046 0 981 7 0 7 7 0 8 1 sosppl 176 5 0 4 1 0 1 1 0 8 0 sockpl 752 781 0 749 11 0 11 11 0 8 6 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 128 0 0 16 0 16 16 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 230 0 0 15 0 15 15 0 8 0 bufpl 280 2624 0 102 181 0 181 181 0 8 0 anonpl 32 7712 0 0 63 0 63 63 0 246 0 amapchunkpl 152 16304 0 15696 32 0 32 32 0 158 7 amappl16 200 2213 0 2187 7 2 5 5 0 8 3 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 424 0 423 1 0 1 1 0 8 0 amappl13 176 123 0 113 1 0 1 1 0 8 0 amappl12 168 907 0 871 2 0 2 2 0 8 0 amappl11 160 49 0 49 1 1 0 1 0 8 0 amappl10 152 59 0 49 1 0 1 1 0 8 0 amappl9 144 261 0 261 1 1 0 1 0 8 0 amappl8 136 100 0 99 1 0 1 1 0 8 0 amappl7 128 177 0 166 1 0 1 1 0 8 0 amappl6 120 152 0 151 1 0 1 1 0 8 0 amappl5 112 107 0 100 1 0 1 1 0 8 0 amappl4 104 277 0 260 1 0 1 1 0 8 0 amappl3 96 2971 0 2830 5 1 4 4 0 8 0 amappl2 88 569 0 516 2 0 2 2 0 8 0 amappl1 80 11914 0 11328 16 0 16 16 0 8 0 amappl 88 4436 0 4235 5 0 5 5 0 92 0 uvmvnodes 80 108 0 0 3 0 3 3 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 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 12 0 3 1 0 1 1 0 8 0 uaddrrnd 24 655 0 618 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 655 0 618 1 0 1 1 0 8 0 vmmpekpl 168 7403 0 7371 2 0 2 2 0 8 0 vmmpepl 168 51693 0 49603 105 0 105 105 0 357 4 vmsppl 488 654 0 618 7 1 6 6 0 8 0 rwobjpl 80 17838 0 16838 25 0 25 25 0 8 1 pdppl 4096 1317 0 1236 115 28 87 95 0 8 6 pvpl 32 14703 0 0 119 0 119 119 0 265 0 pmappl 256 654 0 618 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 289 0 31 8 0 8 8 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:438 panic(ffffffff834406d6) at panic+0x1e5 sys/kern/subr_prf.c:198 pool_do_get(ffffffff83969f98,1,ffff80003c4113c8) at pool_do_get+0x5df pool_get(ffffffff83969f98,1) at pool_get+0x162 sys/kern/subr_pool.c:-1 shmget_allocate_segment(ffff80003c40ba18,ffff80003c411620,56,ffff80003c411570) at shmget_allocate_segment+0x1af sys/kern/sysv_shm.c:-1 sys_shmget(ffff80003c40ba18,ffff80003c411620,ffff80003c411570) at sys_shmget+0x195 sys/kern/sysv_shm.c:482 syscall(ffff80003c411620) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c411620) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x55e0bde1be0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299adff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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+0x38 sys/dev/kcov.c:-1 sys_clock_gettime(ffff80003c40a558,ffff80003c3f1c10,ffff80003c3f1b60) at sys_clock_gettime+0x2e sys/kern/kern_time.c:-1 syscall(ffff80003c3f1c10) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3f1c10) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73aa2376ff70, count: 8 ddb{1}> trace x86_ipi_db(ffff8000299adff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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+0x38 sys/dev/kcov.c:-1 sys_clock_gettime(ffff80003c40a558,ffff80003c3f1c10,ffff80003c3f1b60) at sys_clock_gettime+0x2e sys/kern/kern_time.c:-1 syscall(ffff80003c3f1c10) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3f1c10) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73aa2376ff70, count: -7