panic: kernel diagnostic assertion "p->p_stat == SONPROC || p->p_stat == SSLEEP || p->p_stat == SSTOP" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_synch.c", line 408 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 115088 62222 32767 0x10 0 1 syz-executor.4 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a37ea) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f876,ffffffff82852e51,198,ffffffff827b0ca7) at __assert+0x29 sys/kern/subr_prf.c:157 tsleep_nsec(0,1,48f160c14465a376,120) at tsleep_nsec rwsleep(ffff80002129d5f8,ffffffff82c3cdd0,120,ffffffff8279c3d7,0) at rwsleep+0xab sys/kern/kern_synch.c:300 futex_wait(de66a917b20,2,0,2) at futex_wait+0x13d sys/kern/sys_futex.c:250 sys_futex(ffff80002129d5f8,ffff80002511d8e0,ffff80002511d930) at sys_futex+0xfc sys/kern/sys_futex.c:101 syscall(ffff80002511d9b0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002511d9b0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xde64bbfd100, count: 6 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 "p->p_stat == SONPROC || p->p_stat == SSLEEP || p->p_stat == SSTOP" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_synch.c", line 408 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a37ea) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f876,ffffffff82852e51,198,ffffffff827b0ca7) at __assert+0x29 sys/kern/subr_prf.c:157 tsleep_nsec(0,1,48f160c14465a376,120) at tsleep_nsec rwsleep(ffff80002129d5f8,ffffffff82c3cdd0,120,ffffffff8279c3d7,0) at rwsleep+0xab sys/kern/kern_synch.c:300 futex_wait(de66a917b20,2,0,2) at futex_wait+0x13d sys/kern/sys_futex.c:250 sys_futex(ffff80002129d5f8,ffff80002511d8e0,ffff80002511d930) at sys_futex+0xfc sys/kern/sys_futex.c:101 syscall(ffff80002511d9b0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002511d9b0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xde64bbfd100, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002511d5f0 rbx 0xffffffff82bd3b9f cpu_info_full_primary+0x2b9f rdx 0xffff800000d4a640 rcx 0xffff80002129d5f8 rax 0xffffffff82bd2ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x7bb6447dd9e4e5c8 r11 0xcb1a1c631bc066aa r12 0xffffffff82bd39a0 cpu_info_full_primary+0x29a0 r13 0 r14 0 r15 0x1 rip 0xffffffff818714dc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002511d5e0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.7) pid=422286 stat=run flags process=1810 proc=4080080 pri=81, usrpri=81, nice=20 forw=0x0, list=0xffff80002129db68,0xffff80002129d8c0 process=0xffff8000ffff94f8 user=0xffff800025118000, vmspace=0xfffffd806bfaeb08 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 90948 327743 69184 32767 2 0x10 syz-executor.5 10600 218244 73227 32767 3 0x3810 suspend syz-executor.7 *10600 422286 73227 32767 2 0x4081890 syz-executor.7 22210 90427 71808 32767 3 0x90 nanoslp syz-executor.1 22210 215489 71808 32767 3 0x4000090 ttyout syz-executor.1 22210 451439 71808 32767 3 0x4000090 fsleep syz-executor.1 22210 163875 71808 32767 3 0x4000090 fsleep syz-executor.1 23149 77641 95034 32767 2 0x10 syz-executor.3 23149 355978 95034 32767 3 0x4000090 kqread syz-executor.3 23149 334575 95034 32767 3 0x4000090 fsleep syz-executor.3 44414 362842 2422 32767 2 0x10 syz-executor.6 2422 271765 78461 0 3 0x82 wait syz-executor.6 69184 287702 48035 32767 3 0x90 nanoslp syz-executor.5 48035 243263 78461 0 3 0x82 wait syz-executor.5 97786 217070 30895 32767 3 0x10 biowait syz-executor.0 30895 178720 78461 0 3 0x82 wait syz-executor.0 71808 419659 31722 32767 3 0x90 nanoslp syz-executor.1 31722 486413 78461 0 3 0x82 wait syz-executor.1 95034 10467 86439 32767 3 0x90 nanoslp syz-executor.3 86439 331658 78461 0 3 0x82 wait syz-executor.3 87845 505171 9174 32767 3 0x90 piperd syz-executor.2 9174 201176 78461 0 3 0x82 wait syz-executor.2 73227 297587 50491 32767 3 0x90 nanoslp syz-executor.7 50491 4218 78461 0 3 0x82 wait syz-executor.7 45014 228219 0 0 3 0x14200 bored sosplice 62222 115088 83912 32767 7 0x10 syz-executor.4 83912 218501 78461 0 3 0x82 wait syz-executor.4 78461 474088 73377 0 3 0x2000082 wait syz-fuzzer 78461 396300 73377 0 3 0x6000082 thrsleep syz-fuzzer 78461 480818 73377 0 3 0x6000082 thrsleep syz-fuzzer 78461 15202 73377 0 3 0x6000082 wait syz-fuzzer 78461 134377 73377 0 3 0x6000082 kqread syz-fuzzer 78461 514149 73377 0 3 0x6000082 wait syz-fuzzer 78461 191206 73377 0 3 0x6000082 wait syz-fuzzer 78461 82670 73377 0 3 0x6000082 thrsleep syz-fuzzer 78461 409316 73377 0 3 0x6000082 thrsleep syz-fuzzer 78461 369227 73377 0 3 0x6000082 wait syz-fuzzer 78461 47417 73377 0 3 0x6000082 thrsleep syz-fuzzer 78461 110055 73377 0 3 0x6000082 thrsleep syz-fuzzer 78461 485911 73377 0 3 0x6000082 wait syz-fuzzer 78461 16553 73377 0 3 0x6000082 thrsleep syz-fuzzer 78461 79802 73377 0 3 0x6000082 wait syz-fuzzer 78461 176510 73377 0 3 0x6000082 wait syz-fuzzer 73377 462410 13342 0 3 0x10008a sigsusp ksh 13342 96606 85384 0 3 0x9a kqread sshd 82056 21304 1 0 3 0x100083 ttyin getty 85384 31736 1 0 3 0x88 kqread sshd 3430 113707 69029 73 3 0x1100090 kqread syslogd 69029 288326 1 0 3 0x100082 netio syslogd 1389 394912 1 0 3 0x100080 kqread resolvd 43145 485183 54208 77 3 0x100092 kqread dhcpleased 1188 199898 54208 77 3 0x100092 kqread dhcpleased 54208 290618 1 0 3 0x80 kqread dhcpleased 18680 414019 0 0 3 0x14200 bored smr 22773 269860 0 0 2 0x14200 zerothread 5317 402192 0 0 3 0x14200 aiodoned aiodoned 61984 118564 0 0 3 0x14200 syncer update 16535 417492 0 0 3 0x14200 cleaner cleaner 27332 290956 0 0 3 0x14200 reaper reaper 56678 412785 0 0 3 0x14200 pgdaemon pagedaemon 48435 85740 0 0 3 0x14200 bored viomb 48780 50168 0 0 3 0x40014200 acpi0 acpi0 30787 115418 0 0 3 0x40014200 idle1 10257 137979 0 0 3 0x14200 bored softnet3 41027 267259 0 0 3 0x14200 bored softnet2 24243 420535 0 0 3 0x14200 bored softnet1 33402 220169 0 0 3 0x14200 bored softnet0 91139 108031 0 0 3 0x14200 bored systqmp 17671 325413 0 0 3 0x14200 bored systq 54519 505234 0 0 3 0x40014200 bored softclock 47001 490343 0 0 3 0x40014200 idle0 1 485275 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 (0xffffffff82cbb960) #0 witness_lock+0x447 #1 sleep_finish+0x142 sys/kern/kern_synch.c:398 #2 rwsleep+0xab sys/kern/kern_synch.c:300 #3 futex_wait+0x13d sys/kern/sys_futex.c:250 #4 sys_futex+0xfc sys/kern/sys_futex.c:101 #5 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #5 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #6 Xsyscall+0x128 Process 44414 (syz-executor.6) thread 0xffff80002129d088 (362842) exclusive rrwlock inode r = 0 (0xfffffd806fca7c50) #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 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806710df80) #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 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 Process 97786 (syz-executor.0) thread 0xffff80002129cdd0 (217070) exclusive rrwlock inode r = 0 (0xfffffd806fca7810) #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 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343 #6 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806fd96a28) #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 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10192 6409K 6420K 78643K 11321 0 pcb 13 12K 14K 78643K 17 0 rtable 240 6K 7K 78643K 979 0 pf 29 8K 8K 78643K 63 0 ifaddr 44 15K 15K 78643K 116 0 ifgroup 50 2K 2K 78643K 118 0 sysctl 2 0K 0K 78643K 2 0 counters 60 35K 35K 78643K 94 0 ioctlops 0 0K 2K 78643K 107 0 iov 0 0K 16K 78643K 1364 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 2894 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 176 0 VM map 2 1K 1K 78643K 2 0 sem 10 1K 1K 78643K 15 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 113K 78643K 10688 0 sigio 0 0K 0K 78643K 123 0 proc 56 78K 103K 78643K 1607 0 subproc 104 6K 6K 78643K 325 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 673 0 in_multi 99 7K 7K 78643K 359 0 ether_multi 1 0K 0K 78643K 4 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 91 413K 413K 78643K 91 0 exec 0 0K 1K 78643K 2804 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 434 95K 99K 78643K 106711 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 346 0 NDP 11 0K 2K 78643K 78 0 temp 74 5920K 6048K 78643K 28705 0 kqueue 13 20K 28K 78643K 1053 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 120 258 0 255 3 2 1 2 0 8 0 rtentry 112 311 0 198 4 0 4 4 0 8 0 unpcb 144 7705 0 7692 79 75 4 10 0 8 3 syncache 296 133 0 133 17 17 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 577 0 577 13 13 0 2 0 8 0 tcpcb 808 4919 0 4905 130 127 3 14 0 8 1 arp 120 55 0 36 1 0 1 1 0 8 0 ipq 40 15 0 14 6 5 1 1 0 8 0 ipqe 40 150 0 149 6 5 1 1 0 8 0 inpcb 368 16645 0 16619 166 159 7 17 0 8 4 nd6 136 85 0 59 1 0 1 1 0 8 0 kcovpl 48 25 0 17 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1241 0 773 30 0 30 30 0 8 0 art_table 32 1242 0 773 4 0 4 4 0 8 0 art_node 16 310 0 207 1 0 1 1 0 8 0 sysvmsgpl 40 39 0 0 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 14643 0 13184 92 0 92 92 0 8 0 ffsino 272 14643 0 13184 98 0 98 98 0 8 0 nchpl 144 28355 0 26716 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 91015 0 91014 4 3 1 2 0 8 0 percpumem 16 60 0 17 1 0 1 1 0 8 0 kstatmem 264 56 0 34 2 0 2 2 0 8 0 scxspl 216 79725 0 79724 38 36 2 8 1 8 1 plimitpl 152 2056 0 2032 19 17 2 2 0 8 1 sigapl 424 10947 0 10896 7 0 7 7 0 8 0 futexpl 64 86193 0 86189 1 0 1 1 0 8 0 knotepl 120 571 0 0 10 0 10 10 0 8 0 kqueuepl 216 2778 0 2767 43 42 1 5 0 8 0 pipepl 320 1706 0 1678 32 29 3 8 0 8 0 fdescpl 496 10929 0 10896 7 2 5 6 0 8 0 filepl 152 69441 0 69195 110 96 14 19 0 8 4 lockfpl 104 1912 0 1910 4 3 1 2 0 8 0 lockfspl 48 387 0 385 1 0 1 1 0 8 0 sessionpl 144 40 0 24 1 0 1 1 0 8 0 pgrppl 48 76 0 60 1 0 1 1 0 8 0 ucredpl 104 8739 0 8721 1 0 1 1 0 8 0 zombiepl 144 10896 0 10896 1 0 1 1 0 8 1 processpl 1072 10947 0 10896 4 0 4 4 0 8 0 procpl 696 29901 0 29829 19 11 8 9 0 8 0 sosppl 168 156 0 152 15 14 1 1 0 8 0 sockpl 488 24884 0 24849 447 436 11 34 0 8 5 mcl64k 65536 25 0 0 4 1 3 3 0 8 0 mcl16k 16384 18 0 0 3 0 3 3 0 8 0 mcl12k 12288 18 0 0 2 0 2 2 0 8 0 mcl9k 9216 18 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 5 0 5 5 0 8 0 mcl4k 4096 69 0 0 7 2 5 6 0 8 0 mcl2k2 2112 16 0 0 2 0 2 2 0 8 0 mcl2k 2048 382 0 0 39 11 28 39 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1298 0 0 62 0 62 62 0 8 0 bufpl 288 18406 0 12078 453 0 453 453 0 8 0 anonpl 24 1120962 0 1109757 175 86 89 95 0 186 2 amapchunkpl 152 334580 0 333736 86 49 37 44 0 158 1 amappl16 200 25294 0 25005 115 94 21 29 0 8 3 amappl15 192 13 0 12 2 1 1 1 0 8 0 amappl14 184 241 0 225 2 1 1 2 0 8 0 amappl13 176 16 0 16 2 2 0 1 0 8 0 amappl12 168 11822 0 11788 2 0 2 2 0 8 0 amappl11 160 62 0 51 1 0 1 1 0 8 0 amappl10 152 64 0 51 1 0 1 1 0 8 0 amappl9 144 304 0 304 18 17 1 1 0 8 1 amappl8 136 691 0 523 6 0 6 6 0 8 0 amappl7 128 126 0 112 2 0 2 2 0 8 0 amappl6 120 471 0 442 2 1 1 2 0 8 0 amappl5 112 465 0 457 1 0 1 1 0 8 0 amappl4 104 964 0 919 2 0 2 2 0 8 0 amappl3 96 66345 0 66257 3 0 3 3 0 8 0 amappl2 88 11644 0 11573 3 1 2 3 0 8 0 amappl1 80 46979 0 46453 22 9 13 22 0 8 0 amappl 88 105687 0 105445 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 10929 0 10896 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10929 0 10896 1 0 1 1 0 8 0 vmmpekpl 168 83635 0 83571 4 0 4 4 0 8 0 vmmpepl 168 645159 0 642782 217 99 118 123 0 357 2 vmsppl 464 10928 0 10896 7 2 5 6 0 8 0 rwobjpl 56 167611 0 160145 119 9 110 110 0 8 1 pdppl 4096 21866 0 21792 444 362 82 90 0 8 8 pvpl 32 3031194 0 3014075 457 283 174 343 0 265 18 pmappl 248 10928 0 10896 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1544 0 667 26 0 26 26 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(ffffffff827a37ea) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f876,ffffffff82852e51,198,ffffffff827b0ca7) at __assert+0x29 sys/kern/subr_prf.c:157 tsleep_nsec(0,1,48f160c14465a376,120) at tsleep_nsec rwsleep(ffff80002129d5f8,ffffffff82c3cdd0,120,ffffffff8279c3d7,0) at rwsleep+0xab sys/kern/kern_synch.c:300 futex_wait(de66a917b20,2,0,2) at futex_wait+0x13d sys/kern/sys_futex.c:250 sys_futex(ffff80002129d5f8,ffff80002511d8e0,ffff80002511d930) at sys_futex+0xfc sys/kern/sys_futex.c:101 syscall(ffff80002511d9b0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002511d9b0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xde64bbfd100, count: -9 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(ffffffff82cbb758) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cbb758) at __mp_lock+0x133 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82cbb758,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x4df sys/kern/sched_bsd.c:473 preempt() at preempt+0x5b sys/kern/sched_bsd.c:343 ast(ffff80002a7e9940) at ast+0x109 mi_ast sys/sys/syscall_mi.h:192 [inline] ast(ffff80002a7e9940) at ast+0x109 sys/arch/amd64/amd64/trap.c:541 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x71dfe8285c70, count: 5 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(ffffffff82cbb758) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cbb758) at __mp_lock+0x133 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82cbb758,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x4df sys/kern/sched_bsd.c:473 preempt() at preempt+0x5b sys/kern/sched_bsd.c:343 ast(ffff80002a7e9940) at ast+0x109 mi_ast sys/sys/syscall_mi.h:192 [inline] ast(ffff80002a7e9940) at ast+0x109 sys/arch/amd64/amd64/trap.c:541 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x71dfe8285c70, count: -10