login: panic: Data modified on freelist: word 4 of object 0xffff800001277c00 size 0x188 previous type free (0x6563 != 0xdeaf4152) Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 310483 37949 0 0 0 1 syz-executor *339537 37949 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830526de) at panic+0x1e5 sys/kern/subr_prf.c:198 malloc(188,2,a) at malloc+0xd7c sys/kern/kern_malloc.c:349 bpfopen(31700,41,2000,ffff800029fe62b8) at bpfopen+0x11b spec_open_clone(ffff8000371f98d8) at spec_open_clone+0x287 sys/kern/spec_vnops.c:722 spec_open(ffff8000371f98d8) at spec_open+0x326 sys/kern/spec_vnops.c:148 VOP_OPEN(fffffd806eddbb28,41,fffffd807f7d3478,ffff800029fe62b8) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 vn_open(ffff8000371f9b28,41,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177 doopenat(ffff800029fe62b8,ffffff9c,20000580,40,0,ffff8000371f9cd0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff8000371f9d80) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371f9d80) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd41626e1db0, count: 4 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: Data modified on freelist: word 4 of object 0xffff800001277c00 size 0x188 previous type free (0x6563 != 0xdeaf4152) ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830526de) at panic+0x1e5 sys/kern/subr_prf.c:198 malloc(188,2,a) at malloc+0xd7c sys/kern/kern_malloc.c:349 bpfopen(31700,41,2000,ffff800029fe62b8) at bpfopen+0x11b spec_open_clone(ffff8000371f98d8) at spec_open_clone+0x287 sys/kern/spec_vnops.c:722 spec_open(ffff8000371f98d8) at spec_open+0x326 sys/kern/spec_vnops.c:148 VOP_OPEN(fffffd806eddbb28,41,fffffd807f7d3478,ffff800029fe62b8) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 vn_open(ffff8000371f9b28,41,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177 doopenat(ffff800029fe62b8,ffffff9c,20000580,40,0,ffff8000371f9cd0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff8000371f9d80) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371f9d80) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd41626e1db0, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000371f95e0 rbx 0xffffffff834a0dbf cpu_info_full_primary+0x2dbf rdx 0 rcx 0xffff800029fe62b8 rax 0xffffffff8349fff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xfbada3174882444 r11 0x82a01e7caf445101 r12 0xffffffff834a0bc0 cpu_info_full_primary+0x2bc0 r13 0 r14 0 r15 0x1 rip 0xffffffff81610e15 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000371f95d0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=339537 pid=37949 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800029fe7980,0xffff800029fe7480 process=0xffff8000ffff1b50 user=0xffff8000371f4000, vmspace=0xfffffd806ce4ee18 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 94102 457278 16263 0 2 0 syz-executor 37949 310483 37201 0 7 0 syz-executor *37949 339537 37201 0 7 0x4000000 syz-executor 27995 348782 77131 0 2 0 syz-executor 74991 459990 11789 0 2 0 syz-executor 74991 108213 11789 0 3 0x4000080 kqpoll syz-executor 53914 231048 97521 0 2 0 syz-executor 53914 375728 97521 0 3 0x4000080 fsleep syz-executor 23393 198373 1 0 3 0x82 nanoslp getty 47344 62530 7856 0 3 0x80 nanoslp syz-executor 47344 234221 7856 0 3 0x4000080 sbwait syz-executor 47344 479072 7856 0 3 0x4000080 fsleep syz-executor 82985 259855 69484 60928 3 0x90 nanoslp syz-executor 82985 246895 69484 60928 3 0x4000090 fsleep syz-executor 82985 181057 69484 60928 3 0x4000090 kqsel syz-executor 82985 458254 69484 60928 3 0x4000090 fsleep syz-executor 77131 158045 9892 0 3 0x82 nanoslp syz-executor 62333 404090 0 0 3 0x14200 bored sosplice 37201 403782 9892 0 3 0x82 nanoslp syz-executor 11789 243145 9892 0 3 0x82 nanoslp syz-executor 16263 80952 9892 0 3 0x82 nanoslp syz-executor 97521 468481 9892 0 3 0x82 nanoslp syz-executor 69484 183250 9892 0 3 0x82 nanoslp syz-executor 7856 208801 9892 0 3 0x82 nanoslp syz-executor 17843 263786 9892 0 3 0x82 wait syz-executor 9892 319913 18856 0 3 0x82 kqread syz-executor 18856 163311 95874 0 3 0x10008a sigsusp ksh 95874 176756 31721 0 3 0x98 kqread sshd-session 31721 390252 31334 0 3 0x92 kqread sshd-session 31334 317052 1 0 3 0x88 kqread sshd 55789 387008 50609 74 3 0x1100092 bpf pflogd 50609 375775 1 0 3 0x80 sbwait pflogd 25320 404737 49934 73 3 0x1100090 kqread syslogd 49934 63639 1 0 3 0x100082 sbwait syslogd 9659 523029 1 0 3 0x100080 kqread resolvd 66716 465591 39358 77 3 0x100092 kqread dhcpleased 80235 292253 39358 77 3 0x100092 kqread dhcpleased 39358 257861 1 0 3 0x80 kqread dhcpleased 7121 314557 0 0 3 0x14200 bored smr 21542 301157 0 0 2 0x14200 zerothread 38521 209520 0 0 3 0x14200 aiodoned aiodoned 58627 445602 0 0 3 0x14200 syncer update 24778 22107 0 0 3 0x14200 cleaner cleaner 10052 433041 0 0 3 0x14200 reaper reaper 42096 114362 0 0 3 0x14200 pgdaemon pagedaemon 41505 209052 0 0 3 0x14200 bored viomb 24019 157383 0 0 3 0x40014200 acpi0 acpi0 50984 409651 0 0 3 0x40014200 idle1 69856 31132 0 0 3 0x14200 bored softnet3 75071 397882 0 0 3 0x14200 bored softnet2 56697 130003 0 0 3 0x14200 bored softnet1 13307 352118 0 0 3 0x14200 bored softnet0 4500 429001 0 0 3 0x14200 bored systqmp 51194 315656 0 0 3 0x14200 bored systq 52154 85900 0 0 3 0x14200 tmoslp softclockmp 84640 354584 0 0 3 0x40014200 tmoslp softclock 94999 1484 0 0 3 0x40014200 idle0 1 432270 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:91 r = 0 (0xffffffff83442338) #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 malloc+0x2f9 sys/kern/kern_malloc.c:195 #4 bpfopen+0x11b #5 spec_open_clone+0x287 sys/kern/spec_vnops.c:722 #6 spec_open+0x326 sys/kern/spec_vnops.c:148 #7 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 #8 vn_open+0x708 sys/kern/vfs_vnops.c:177 #9 doopenat+0x31d sys/kern/vfs_syscalls.c:1123 #10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 Process 94102 (syz-executor) thread 0xffff800029fe7470 (457278) exclusive rwlock vmmaplk r = 0 (0xfffffd806bf3a118) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5255 #2 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1813 #3 uvm_fault_check+0x831 uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #3 uvm_fault_check+0x831 sys/uvm/uvm_fault.c:712 #4 uvm_fault+0xf5 sys/uvm/uvm_fault.c:600 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 Process 37949 (syz-executor) thread 0xffff800029fe62b8 (339537) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8359d538) #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 yield+0x6a sys/kern/sched_bsd.c:320 #4 malloc+0xe5 sys/kern/kern_malloc.c:170 #5 checkalias+0x21c sys/kern/vfs_subr.c:586 #6 cdevvp+0xd2 sys/kern/vfs_subr.c:509 #7 spec_open_clone+0x1ee sys/kern/spec_vnops.c:713 #8 spec_open+0x326 sys/kern/spec_vnops.c:148 #9 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 #10 vn_open+0x708 sys/kern/vfs_vnops.c:177 #11 doopenat+0x31d sys/kern/vfs_syscalls.c:1123 #12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:91 r = 0 (0xffffffff83442338) #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 malloc+0x2f9 sys/kern/kern_malloc.c:195 #4 bpfopen+0x11b #5 spec_open_clone+0x287 sys/kern/spec_vnops.c:722 #6 spec_open+0x326 sys/kern/spec_vnops.c:148 #7 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 #8 vn_open+0x708 sys/kern/vfs_vnops.c:177 #9 doopenat+0x31d sys/kern/vfs_syscalls.c:1123 #10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 Process 27995 (syz-executor) thread 0xffff800029fe6030 (348782) exclusive rwlock vmmaplk r = 0 (0xfffffd806ce4e110) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5255 #2 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1813 #3 uvm_fault_check+0x831 uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #3 uvm_fault_check+0x831 sys/uvm/uvm_fault.c:712 #4 uvm_fault+0xf5 sys/uvm/uvm_fault.c:600 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10186 11115K 11397K 166960K 12649 0 pcb 17 14K 16K 166960K 237 0 rtable 173 5K 7K 166960K 432 0 pf 28 16K 21K 166960K 239 0 ifaddr 30 5K 7K 166960K 61 0 ifgroup 43 2K 2K 166960K 88 0 sysctl 3 0K 0K 166960K 3 0 counters 58 35K 36K 166960K 80 0 ioctlops 0 0K 4K 166960K 1600 0 iov 0 0K 16K 166960K 93 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1452 91K 92K 166960K 2218 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 147 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 18 65K 93K 166960K 851 0 sigio 0 0K 0K 166960K 111 0 proc 72 91K 116K 166960K 659 0 subproc 104 6K 6K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 124 0 in_multi 65 4K 7K 166960K 142 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 489 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 241 73K 78K 166960K 9917 0 UVM aobj 30 4K 6K 166960K 34 0 pinsyscall 43 86K 104K 166960K 1977 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 95 0 NDP 9 0K 2K 166960K 39 0 temp 67 6825K 6947K 166960K 30052 0 kqueue 13 20K 30K 166960K 154 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 69 0 66 1 0 1 1 0 8 0 rtentry 112 137 0 59 4 0 4 4 0 8 0 unpcb 144 653 0 633 7 5 2 4 0 8 1 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 223 0 218 4 2 2 4 0 8 1 arp 120 22 0 11 1 0 1 1 0 8 0 inpcb 336 1168 0 1154 17 12 5 15 0 8 3 nd6 136 31 0 15 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1168 1 0 1 1 1 0 1 0 8 0 pffrag 232 5 0 2 1 0 1 1 0 482 0 pffrnode 88 5 0 2 1 0 1 1 0 8 0 pffrent 40 13 0 10 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 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pfstitem 24 55 0 19 1 0 1 1 0 8 0 pfstkey 128 55 0 19 2 0 2 2 0 8 0 pfstate 376 55 0 19 4 0 4 4 0 8 0 pfrule 1344 56 0 48 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 591 0 263 30 3 27 30 0 8 4 art_table 32 593 0 263 4 0 4 4 0 8 0 art_node 16 136 0 66 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 7 1 0 1 1 0 8 0 semupl 112 7 0 7 4 3 1 1 0 8 1 semapl 112 145 0 135 1 0 1 1 0 8 0 shmpl 112 31 0 4 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3041 0 1544 95 0 95 95 0 8 0 ffsino 272 3041 0 1544 102 0 102 102 0 8 1 nchpl 144 4291 0 3779 63 0 63 63 0 8 39 uvmvnodes 80 3620 0 0 74 0 74 74 0 8 0 vnodes 216 3620 0 0 202 0 202 202 0 8 0 namei 1024 14717 0 14717 4 2 2 2 0 8 2 percpumem 16 54 0 11 1 0 1 1 0 8 0 kstatmem 264 40 0 22 2 0 2 2 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 14298 0 14298 12 11 1 8 1 8 1 plimitpl 152 170 0 153 1 0 1 1 0 8 0 sigapl 424 1156 0 1105 7 1 6 7 0 8 0 futexpl 64 12075 0 12071 1 0 1 1 0 8 0 knotepl 120 545 0 0 17 0 17 17 0 8 0 kqueuepl 216 250 0 238 3 2 1 3 0 8 0 pipepl 320 217 0 190 3 0 3 3 0 8 0 fdescpl 496 1136 0 1104 5 0 5 5 0 8 0 filepl 152 7586 0 7337 26 12 14 19 0 8 1 lockfpl 104 276 0 274 1 0 1 1 0 8 0 lockfspl 48 122 0 120 1 0 1 1 0 8 0 sessionpl 144 28 0 20 1 0 1 1 0 8 0 pgrppl 48 78 0 62 1 0 1 1 0 8 0 ucredpl 104 1477 0 1463 1 0 1 1 0 8 0 zombiepl 144 1370 0 1369 2 1 1 1 0 8 0 processpl 1160 1156 0 1105 5 1 4 5 0 8 0 procpl 648 2417 0 2357 7 0 7 7 0 8 0 srpgc 96 8 0 8 2 1 1 1 0 8 1 sosppl 168 10 0 10 2 1 1 1 0 8 1 sockpl 664 1899 0 1864 27 18 9 17 0 8 5 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 165 0 0 21 0 21 21 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 206 0 0 13 0 13 13 0 8 0 bufpl 280 6229 0 101 438 0 438 438 0 8 0 anonpl 24 277123 0 273342 103 44 59 63 0 185 22 amapchunkpl 152 32761 0 32233 34 8 26 28 0 158 2 amappl16 200 8060 0 8026 53 41 12 21 0 8 8 amappl15 192 10 0 10 2 2 0 1 0 8 0 amappl14 184 185 0 172 1 0 1 1 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 1808 0 1776 3 1 2 2 0 8 0 amappl11 160 62 0 47 1 0 1 1 0 8 0 amappl10 152 53 0 53 1 1 0 1 0 8 0 amappl9 144 135 0 134 1 0 1 1 0 8 0 amappl8 136 22 0 19 1 0 1 1 0 8 0 amappl7 128 114 0 102 1 0 1 1 0 8 0 amappl6 120 204 0 203 1 0 1 1 0 8 0 amappl5 112 217 0 205 1 0 1 1 0 8 0 amappl4 104 350 0 331 1 0 1 1 0 8 0 amappl3 96 6050 0 5951 3 0 3 3 0 8 0 amappl2 88 1471 0 1384 4 1 3 3 0 8 0 amappl1 80 10765 0 10198 15 0 15 15 0 8 1 amappl 88 9459 0 9279 5 0 5 5 0 92 0 dma4096 4096 2 0 2 2 2 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 33 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1136 0 1104 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1136 0 1104 1 0 1 1 0 8 0 vmmpekpl 168 10979 0 10944 3 0 3 3 0 8 0 vmmpepl 168 81178 0 79260 115 14 101 101 0 357 11 vmsppl 448 1135 0 1104 6 2 4 5 0 8 0 rwobjpl 56 31250 0 26655 67 2 65 65 0 8 0 pdppl 4096 2279 0 2208 119 48 71 85 0 8 0 pvpl 32 16759 0 0 138 2 136 136 0 265 0 pmappl 248 1135 0 1104 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 428 0 74 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(ffffffff830526de) at panic+0x1e5 sys/kern/subr_prf.c:198 malloc(188,2,a) at malloc+0xd7c sys/kern/kern_malloc.c:349 bpfopen(31700,41,2000,ffff800029fe62b8) at bpfopen+0x11b spec_open_clone(ffff8000371f98d8) at spec_open_clone+0x287 sys/kern/spec_vnops.c:722 spec_open(ffff8000371f98d8) at spec_open+0x326 sys/kern/spec_vnops.c:148 VOP_OPEN(fffffd806eddbb28,41,fffffd807f7d3478,ffff800029fe62b8) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 vn_open(ffff8000371f9b28,41,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177 doopenat(ffff800029fe62b8,ffffff9c,20000580,40,0,ffff8000371f9cd0) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123 syscall(ffff8000371f9d80) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371f9d80) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd41626e1db0, count: -11 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 __mp_lock(ffffffff8359d330) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8359d330) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff800031f8c550) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800031f8c550) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72de1f76dac0, count: 9 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 __mp_lock(ffffffff8359d330) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8359d330) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff800031f8c550) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800031f8c550) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72de1f76dac0, count: -6