login: panic: pool_do_get: mbufpl free list modified: page 0xfffffd8068a5b000; item addr 0xfffffd8068a5ba00; offset 0x0=0x0 != 0x34fc836d9296424f Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *315122 61502 0 0 0x4000000 0K syz-executor.1 414665 85617 0 0x2 0x4000480 1 syz-fuzzer db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8249d33b) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff82915ab0,2,ffff800023f1e668) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82915ab0,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_get(2,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250 switchwrite(86139,ffff800023f1ea50,1) at switchwrite+0x260 sys/net/switchctl.c:260 spec_write(ffff800023f1e820) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd807617ac40,ffff800023f1ea50,1,fffffd807f7bf900) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8066211b48,ffff800023f1ea50,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e38398,5,ffff800023f1ea50,1,ffff800023f1eb40) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff800020e38398,ffff800023f1eaf8,ffff800023f1eb40) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff800023f1ebc0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f1ebc0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6522e19a490, count: 2 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 pool_do_get: mbufpl free list modified: page 0xfffffd8068a5b000; item addr 0xfffffd8068a5ba00; offset 0x0=0x0 != 0x34fc836d9296424f ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8249d33b) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff82915ab0,2,ffff800023f1e668) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82915ab0,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_get(2,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250 switchwrite(86139,ffff800023f1ea50,1) at switchwrite+0x260 sys/net/switchctl.c:260 spec_write(ffff800023f1e820) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd807617ac40,ffff800023f1ea50,1,fffffd807f7bf900) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8066211b48,ffff800023f1ea50,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e38398,5,ffff800023f1ea50,1,ffff800023f1eb40) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff800020e38398,ffff800023f1eaf8,ffff800023f1eb40) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff800023f1ebc0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f1ebc0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6522e19a490, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800023f1e4b0 rbx 0xffff800023f1e560 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8210369f kprintf+0x16f r9 0x1 r10 0x2 r11 0x726f9daf7daa94a3 r12 0x3000000008 r13 0xffff800023f1e4c0 r14 0x100 r15 0x1 rip 0xffffffff81785548 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800023f1e4a0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=315122 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e37018,0xffffffff82914340 process=0xffff800020ec2fa8 user=0xffff800023f19000, vmspace=0xfffffd807efffa10 estcpu=36, cpticks=5, pctcpu=0.0 user=0, sys=5, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61502 436882 37062 0 2 0 syz-executor.1 *61502 315122 37062 0 7 0x4000000 syz-executor.1 89893 315794 1 0 3 0x100083 ttyin getty 77926 250503 0 0 3 0x14200 bored sosplice 59496 231265 0 0 3 0x14200 acct acct 37062 8615 85617 0 2 0x482 syz-executor.1 56614 180730 85617 0 3 0x82 piperd syz-executor.0 85617 317816 57488 0 3 0x82 kqread syz-fuzzer 85617 414665 57488 0 7 0x4000482 syz-fuzzer 85617 19321 57488 0 3 0x4000082 thrsleep syz-fuzzer 85617 258721 57488 0 2 0x4000002 syz-fuzzer 85617 463200 57488 0 3 0x4000082 thrsleep syz-fuzzer 85617 392946 57488 0 3 0x4000082 thrsleep syz-fuzzer 85617 5347 57488 0 3 0x4000082 thrsleep syz-fuzzer 85617 274638 57488 0 3 0x4000082 thrsleep syz-fuzzer 57488 448066 83148 0 3 0x10008a pause ksh 83148 334942 42495 0 3 0x92 select sshd 42495 179658 1 0 3 0x80 select sshd 74893 81534 52279 74 3 0x100092 bpf pflogd 52279 368687 1 0 3 0x80 netio pflogd 35322 205842 45581 73 3 0x100090 kqread syslogd 45581 73590 1 0 3 0x100082 netio syslogd 34429 515527 1 77 3 0x100090 poll dhclient 23979 227525 1 0 3 0x80 poll dhclient 86374 136160 0 0 3 0x14200 bored smr 1061 429124 0 0 2 0x14200 zerothread 48952 113104 0 0 3 0x14200 aiodoned aiodoned 9716 104334 0 0 3 0x14200 syncer update 35869 481931 0 0 3 0x14200 cleaner cleaner 7029 150132 0 0 3 0x14200 reaper reaper 76013 184626 0 0 3 0x14200 pgdaemon pagedaemon 62711 214781 0 0 3 0x14200 bored crynlk 38823 231338 0 0 3 0x14200 bored crypto 12349 395135 0 0 3 0x40014200 acpi0 acpi0 98726 226127 0 0 3 0x40014200 idle1 88797 11417 0 0 3 0x14200 bored softnet 8772 276175 0 0 3 0x14200 bored systqmp 56678 31184 0 0 3 0x14200 bored systq 80228 271194 0 0 2 0x40014200 softclock 5431 195594 0 0 3 0x40014200 idle0 1 509052 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex mbufpl r = 0 (0xffffffff82915ac0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_get+0xbf sys/kern/subr_pool.c:578 #4 m_get+0x4c sys/kern/uipc_mbuf.c:250 #5 switchwrite+0x260 sys/net/switchctl.c:260 #6 spec_write+0xd4 sys/kern/spec_vnops.c:309 #7 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 #8 vn_write+0x198 sys/kern/vfs_vnops.c:414 #9 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #10 sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 #11 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #11 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #12 Xsyscall+0x128 Process 61502 (syz-executor.1) thread 0xffff800020e38398 (315122) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82935f10) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #3 sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 exclusive mutex mbufpl r = 0 (0xffffffff82915ac0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_get+0xbf sys/kern/subr_pool.c:578 #4 m_get+0x4c sys/kern/uipc_mbuf.c:250 #5 switchwrite+0x260 sys/net/switchctl.c:260 #6 spec_write+0xd4 sys/kern/spec_vnops.c:309 #7 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 #8 vn_write+0x198 sys/kern/vfs_vnops.c:414 #9 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #10 sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 #11 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #11 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #12 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9514 6476K 7057K 78643K 11645 0 pcb 14 8K 8K 78643K 180 0 rtable 108 4K 8K 78643K 409 0 ifaddr 71 14K 15K 78643K 133 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 51 0 ioctlops 0 0K 4K 78643K 1604 0 iov 1 2K 12K 78643K 40 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1496 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 110 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 451 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 95K 78643K 478 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 23 0 in_multi 42 2K 2K 78643K 113 0 ether_multi 1 0K 0K 78643K 7 0 mrt 0 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 225 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 172 28K 29K 78643K 2159 0 UVM aobj 17 2K 2K 78643K 19 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 36 0 NDP 11 0K 0K 78643K 22 0 temp 102 3858K 3922K 78643K 3773 0 kqueue 3 4K 9K 78643K 17 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 arp 64 6 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 29 0 27 1 0 1 1 0 8 0 rtentry 112 64 0 21 2 0 2 2 0 8 0 unpcb 120 111 0 101 1 0 1 1 0 8 0 syncache 264 5 0 5 2 2 0 1 0 8 0 tcpqe 32 548 0 548 1 1 0 1 0 8 0 tcpcb 544 201 0 195 4 3 1 2 0 8 0 inpcb 296 503 0 495 4 2 2 2 0 8 1 rttmr 72 3 0 3 2 1 1 1 0 8 1 nd6 48 19 0 13 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 2 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 62 0 60 2 1 1 1 0 8 0 pfstitem 24 26 0 12 1 0 1 1 0 8 0 pfstkey 112 26 0 12 1 0 1 1 0 8 0 pfstate 328 26 0 12 2 0 2 2 0 8 0 pfrule 1360 39 0 23 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 246 0 40 13 0 13 13 0 8 0 art_table 32 247 0 40 2 0 2 2 0 8 0 art_node 16 63 0 23 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 2 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 106 0 96 1 0 1 1 0 8 0 shmpl 112 16 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1946 0 541 89 0 89 89 0 8 0 ffsino 272 1946 0 541 96 2 94 95 0 8 0 nchpl 144 2704 0 1093 60 0 60 60 0 8 0 uvmvnodes 72 2227 0 0 41 0 41 41 0 8 0 vnodes 208 2227 0 0 118 0 118 118 0 8 0 namei 1024 7471 0 7471 2 1 1 1 0 8 1 percpumem 16 36 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 18 0 18 2 1 1 1 0 8 1 scxspl 192 7695 0 7695 8 7 1 7 0 8 1 plimitpl 152 38 0 30 1 0 1 1 0 8 0 sigapl 424 669 0 636 4 0 4 4 0 8 0 futexpl 56 5091 0 5091 1 0 1 1 0 8 1 knotepl 112 74 0 54 1 0 1 1 0 8 0 kqueuepl 144 22 0 20 1 0 1 1 0 8 0 pipepl 304 112 0 101 3 2 1 2 0 8 0 fdescpl 496 652 0 636 3 0 3 3 0 8 0 filepl 152 3172 0 3067 6 1 5 5 0 8 0 lockfpl 104 90 0 89 1 0 1 1 0 8 0 lockfspl 48 29 0 28 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 19 0 8 1 0 1 1 0 8 0 ucredpl 96 390 0 381 1 0 1 1 0 8 0 zombiepl 144 636 0 636 2 1 1 1 0 8 1 processpl 992 669 0 636 6 1 5 5 0 8 0 procpl 624 1325 0 1284 4 0 4 4 0 8 0 sockpl 400 651 0 631 4 1 3 3 0 8 1 mcl64k 65536 60 0 0 8 0 8 8 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 210 0 0 26 0 26 26 0 8 0 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 239 0 0 15 1 14 15 0 8 0 mbufpl: pool(0xffffffff82915ab0:mbufpl): free list modified: page 0xfffffd8068a5b000; item ordinal 0; addr 0xfffffd8068a5ba00 (p 0xfffffd806908b000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd8068a5b000; item ordinal 0; addr 0xfffffd8068a5ba00 (p 0xfffffd806908b000); offset 0x0=0x0 mbufpl: pool(0xffffffff82915ab0:mbufpl): page inconsistency: page 0xfffffd8068a5b000; item ordinal 1; addr 0x345aafb3e07c5dce bufpl 280 3770 0 133 260 0 260 260 0 8 0 anonpl 16 68284 0 49581 84 8 76 80 0 124 0 amapchunkpl 152 3166 0 2855 18 3 15 18 0 158 0 amappl16 192 2558 0 1698 44 1 43 43 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 23 0 18 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 369 0 363 1 0 1 1 0 8 0 amappl11 152 64 0 48 1 0 1 1 0 8 0 amappl10 144 19 0 14 1 0 1 1 0 8 0 amappl9 136 358 0 357 1 0 1 1 0 8 0 amappl8 128 360 0 317 2 0 2 2 0 8 0 amappl7 120 133 0 118 1 0 1 1 0 8 0 amappl6 112 26 0 21 1 0 1 1 0 8 0 amappl5 104 793 0 774 1 0 1 1 0 8 0 amappl4 96 494 0 464 1 0 1 1 0 8 0 amappl3 88 132 0 127 1 0 1 1 0 8 0 amappl2 80 3687 0 3619 2 0 2 2 0 8 0 amappl1 72 25428 0 24974 23 13 10 18 0 8 0 amappl 80 1622 0 1539 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 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 64 18 0 2 1 0 1 1 0 8 0 uaddrrnd 24 652 0 636 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 652 0 636 1 0 1 1 0 8 0 vmmpekpl 168 8732 0 8699 2 0 2 2 0 8 0 vmmpepl 168 84194 0 82117 121 30 91 114 0 357 0 vmsppl 368 651 0 636 2 0 2 2 0 8 0 pdppl 4096 1311 0 1272 7 1 6 6 0 8 0 pvpl 32 231867 0 209966 197 12 185 190 0 265 8 pmappl 232 651 0 636 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 282 0 12 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8249d33b) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff82915ab0,2,ffff800023f1e668) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82915ab0,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_get(2,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250 switchwrite(86139,ffff800023f1ea50,1) at switchwrite+0x260 sys/net/switchctl.c:260 spec_write(ffff800023f1e820) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd807617ac40,ffff800023f1ea50,1,fffffd807f7bf900) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8066211b48,ffff800023f1ea50,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e38398,5,ffff800023f1ea50,1,ffff800023f1eb40) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff800020e38398,ffff800023f1eaf8,ffff800023f1eb40) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff800023f1ebc0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f1ebc0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6522e19a490, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_cmp4(ffffffff82935d08,ffffffff82935d08) at __sanitizer_cov_trace_cmp4 __mp_acquire_count(ffffffff82935d08,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020e7e650,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e7e650,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e7e650,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff828bd66c,120,ffffffff823fdad4,2) at tsleep+0x1cc sys/kern/kern_synch.c:155 sys_nanosleep(ffff800020e40120,ffff800020e7e780,ffff800020e7e7d0) at sys_nanosleep+0x205 sys/kern/kern_time.c:297 syscall(ffff800020e7e850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e7e850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00004df20, count: 3 ddb{1}> trace x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_cmp4(ffffffff82935d08,ffffffff82935d08) at __sanitizer_cov_trace_cmp4 __mp_acquire_count(ffffffff82935d08,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020e7e650,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e7e650,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e7e650,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff828bd66c,120,ffffffff823fdad4,2) at tsleep+0x1cc sys/kern/kern_synch.c:155 sys_nanosleep(ffff800020e40120,ffff800020e7e780,ffff800020e7e7d0) at sys_nanosleep+0x205 sys/kern/kern_time.c:297 syscall(ffff800020e7e850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e7e850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc00004df20, count: -12