panic: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/setuid/kernel/sys/arch/amd64/amd64/intr.c", line 699 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 32971 44148 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279cfd2) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f915,ffffffff8283c480,2bb,ffffffff827a1cb3) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(95fdd4fb) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd80795c01b0) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd80795c01b0) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000211d8ff0,fffffd80795c01b0,fffffd80795c0238,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000211d8ff0,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000211d8ff0) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000211d8ff0,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000211d8ff0,ffff8000218fbd80,ffff8000218fbdd0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000218fbe50) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000218fbe50) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7cd94cb1d620, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/setuid/kernel/sys/arch/amd64/amd64/intr.c", line 699 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279cfd2) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f915,ffffffff8283c480,2bb,ffffffff827a1cb3) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(95fdd4fb) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd80795c01b0) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd80795c01b0) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000211d8ff0,fffffd80795c01b0,fffffd80795c0238,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000211d8ff0,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000211d8ff0) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000211d8ff0,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000211d8ff0,ffff8000218fbd80,ffff8000218fbdd0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000218fbe50) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000218fbe50) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7cd94cb1d620, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000218fb9c0 rbx 0xffff800020d59b9f rdx 0 rcx 0xffff8000211d8ff0 rax 0xffff800020d58ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xdcc1d559dbbbe417 r11 0xdc41ee1a8a53bcdb r12 0xffff800020d599a0 r13 0 r14 0 r15 0x1 rip 0xffffffff8138849c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000218fb9b0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=277061 stat=onproc flags process=1018 proc=2000 pri=0, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000212a3d40,0xffff8000211d9550 process=0xffff8000ffff8438 user=0xffff8000218f6000, vmspace=0xfffffd807e8453c8 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 8648 520146 23693 32767 2 0x10 syz-executor.1 8648 100102 23693 32767 2 0x4000090 syz-executor.1 8648 334625 23693 32767 3 0x4000090 fsleep syz-executor.1 47519 84014 22659 32767 3 0x90 piperd syz-executor.4 84127 512121 78410 32767 3 0x90 nanoslp syz-executor.0 22659 267499 19586 0 3 0x82 wait syz-executor.4 78410 124553 19586 0 3 0x82 wait syz-executor.0 54880 54195 10804 32767 3 0x90 piperd syz-executor.7 10804 335978 19586 0 3 0x82 wait syz-executor.7 23693 456897 9914 32767 3 0x90 nanoslp syz-executor.1 9914 39426 19586 0 3 0x82 wait syz-executor.1 10128 381993 0 0 3 0x14200 bored sosplice 24084 218726 95168 32767 3 0x90 nanoslp syz-executor.5 53157 227962 69745 32767 3 0x90 piperd syz-executor.6 76546 218348 62806 32767 3 0x90 piperd syz-executor.3 95168 226953 19586 0 3 0x82 wait syz-executor.5 69745 93043 19586 0 3 0x82 wait syz-executor.6 62806 372832 19586 0 3 0x82 wait syz-executor.3 12368 494675 8813 32767 3 0x90 nanoslp syz-executor.2 8813 513991 19586 0 3 0x82 wait syz-executor.2 19586 308513 71508 0 3 0x2000082 wait syz-fuzzer 19586 96280 71508 0 3 0x6000082 thrsleep syz-fuzzer 19586 102341 71508 0 3 0x6000082 kqread syz-fuzzer 19586 144254 71508 0 3 0x6000082 wait syz-fuzzer 19586 425552 71508 0 3 0x6000082 wait syz-fuzzer 19586 273253 71508 0 3 0x6000082 wait syz-fuzzer 19586 85065 71508 0 3 0x6000082 wait syz-fuzzer 19586 147512 71508 0 3 0x6000082 thrsleep syz-fuzzer 19586 307108 71508 0 3 0x6000082 thrsleep syz-fuzzer 19586 209110 71508 0 3 0x6000082 wait syz-fuzzer 19586 145935 71508 0 3 0x6000082 thrsleep syz-fuzzer 19586 452543 71508 0 3 0x6000082 thrsleep syz-fuzzer 19586 156941 71508 0 3 0x6000082 wait syz-fuzzer 19586 79001 71508 0 3 0x6000082 wait syz-fuzzer 19586 249274 71508 0 3 0x6000082 thrsleep syz-fuzzer 19586 193091 71508 0 3 0x6000082 thrsleep syz-fuzzer 71508 193313 79578 0 3 0x10008a sigsusp ksh 79578 94373 79307 0 3 0x9a kqread sshd 63608 27647 1 0 3 0x100083 ttyin getty 79307 223558 1 0 3 0x88 kqread sshd 1368 345699 82298 73 3 0x1100090 kqread syslogd 82298 254199 1 0 3 0x100082 netio syslogd 64886 289549 1 0 3 0x100080 kqread resolvd 66692 18473 84090 77 3 0x100092 kqread dhcpleased 95766 266931 84090 77 3 0x100092 kqread dhcpleased 84090 248594 1 0 3 0x80 kqread dhcpleased 21873 351262 0 0 3 0x14200 bored smr 82544 388198 0 0 3 0x14200 pgzero zerothread 63162 105558 0 0 3 0x14200 aiodoned aiodoned 65336 418974 0 0 3 0x14200 syncer update 78156 321996 0 0 3 0x14200 cleaner cleaner 44148 32971 0 0 7 0x14200 reaper 41918 151999 0 0 3 0x14200 pgdaemon pagedaemon 26275 10562 0 0 3 0x14200 bored viomb 50128 153566 0 0 3 0x40014200 acpi0 acpi0 13193 85244 0 0 3 0x40014200 idle1 15344 379195 0 0 3 0x14200 bored softnet3 10567 467299 0 0 3 0x14200 bored softnet2 11751 381967 0 0 3 0x14200 bored softnet1 98751 229915 0 0 3 0x14200 bored softnet0 48177 417971 0 0 3 0x14200 bored systqmp 93639 92550 0 0 3 0x14200 bored systq 99244 375159 0 0 3 0x40014200 bored softclock 73059 385799 0 0 3 0x40014200 idle0 1 150505 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 6412K 6420K 78643K 11313 0 pcb 13 10K 12K 78643K 15 0 rtable 236 6K 6K 78643K 688 0 pf 29 8K 8K 78643K 43 0 ifaddr 44 15K 15K 78643K 76 0 ifgroup 50 2K 2K 78643K 78 0 sysctl 2 0K 0K 78643K 2 0 counters 60 35K 35K 78643K 74 0 ioctlops 0 0K 2K 78643K 45 0 iov 0 0K 16K 78643K 186 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1278 80K 80K 78643K 1789 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 32 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 295 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 21 77K 117K 78643K 2744 0 sigio 0 0K 0K 78643K 291 0 proc 56 78K 103K 78643K 838 0 subproc 104 6K 6K 78643K 195 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 110 0 in_multi 99 7K 7K 78643K 207 0 ether_multi 1 0K 0K 78643K 5 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 217 970K 970K 78643K 217 0 exec 0 0K 1K 78643K 680 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 346 87K 100K 78643K 30346 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 102 0 NDP 11 0K 2K 78643K 48 0 temp 74 5920K 5986K 78643K 10621 0 kqueue 12 18K 26K 78643K 249 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> 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 120 262 0 259 5 4 1 3 0 8 0 rtentry 112 193 0 82 4 0 4 4 0 8 0 unpcb 144 2662 0 2649 20 17 3 6 0 8 2 syncache 304 32 0 32 8 7 1 1 0 8 1 tcpqe 32 501 0 501 6 6 0 1 0 8 0 tcpcb 808 709 0 689 25 22 3 9 0 8 0 arp 120 32 0 14 1 0 1 1 0 8 0 ipq 40 4 0 4 2 2 0 1 0 8 0 ipqe 40 16 0 16 2 2 0 1 0 8 0 inpcb 368 1600 0 1577 39 31 8 13 0 8 5 nd6 136 50 0 25 1 0 1 1 0 8 0 kcovpl 48 15 0 7 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 776 0 319 29 0 29 29 0 8 0 art_table 32 777 0 319 4 0 4 4 0 8 0 art_node 16 192 0 91 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 289 0 279 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4833 0 3393 91 0 91 91 0 8 0 ffsino 272 4833 0 3393 97 0 97 97 0 8 0 nchpl 144 8416 0 6775 63 0 63 63 0 8 0 uvmvnodes 80 5037 0 0 103 0 103 103 0 8 0 vnodes 216 5037 0 0 280 0 280 280 0 8 0 namei 1024 29712 0 29712 2 1 1 2 0 8 1 percpumem 16 50 0 7 1 0 1 1 0 8 0 kstatmem 264 36 0 14 2 0 2 2 0 8 0 scxspl 216 25196 0 25196 17 14 3 8 1 8 3 plimitpl 152 265 0 242 2 1 1 2 0 8 0 sigapl 424 3027 0 2976 7 0 7 7 0 8 0 futexpl 64 19776 0 19775 1 0 1 1 0 8 0 knotepl 120 378 0 0 10 0 10 10 0 8 0 kqueuepl 216 641 0 633 12 7 5 5 0 8 4 pipepl 320 776 0 746 17 9 8 8 0 8 5 fdescpl 496 3009 0 2977 7 1 6 6 0 8 0 filepl 152 18682 0 18440 34 19 15 16 0 8 3 lockfpl 104 250 0 248 1 0 1 1 0 8 0 lockfspl 48 83 0 81 1 0 1 1 0 8 0 sessionpl 144 30 0 14 1 0 1 1 0 8 0 pgrppl 48 56 0 40 1 0 1 1 0 8 0 ucredpl 104 2598 0 2580 1 0 1 1 0 8 0 zombiepl 144 2979 0 2976 1 0 1 1 0 8 0 processpl 1072 3027 0 2976 4 0 4 4 0 8 0 procpl 680 8436 0 8367 11 3 8 8 0 8 0 sosppl 168 42 0 42 6 5 1 1 0 8 1 sockpl 488 4633 0 4594 63 49 14 21 0 8 8 mcl64k 65536 22 0 0 3 1 2 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 14 0 0 2 0 2 2 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 23 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 336 0 0 42 0 42 42 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 988 0 0 59 0 59 59 0 8 0 bufpl 288 8064 0 1736 453 0 453 453 0 8 0 anonpl 24 430180 0 419257 120 42 78 92 0 186 0 amapchunkpl 152 96001 0 95193 64 24 40 46 0 158 2 amappl16 200 10403 0 10114 60 43 17 29 0 8 0 amappl15 192 42 0 42 1 1 0 1 0 8 0 amappl14 184 189 0 173 2 1 1 2 0 8 0 amappl13 176 12 0 11 1 0 1 1 0 8 0 amappl12 168 3756 0 3722 2 0 2 2 0 8 0 amappl11 160 75 0 65 1 0 1 1 0 8 0 amappl10 152 51 0 41 1 0 1 1 0 8 0 amappl9 144 234 0 232 1 0 1 1 0 8 0 amappl8 136 320 0 246 3 0 3 3 0 8 0 amappl7 128 89 0 77 2 0 2 2 0 8 0 amappl6 120 283 0 267 1 0 1 1 0 8 0 amappl5 112 253 0 245 1 0 1 1 0 8 0 amappl4 104 626 0 588 2 0 2 2 0 8 0 amappl3 96 18993 0 18910 10 6 4 4 0 8 1 amappl2 88 3432 0 3360 3 1 2 3 0 8 0 amappl1 80 19183 0 18664 21 8 13 21 0 8 0 amappl 88 29677 0 29451 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 3009 0 2977 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3009 0 2977 1 0 1 1 0 8 0 vmmpekpl 168 30375 0 30303 4 0 4 4 0 8 0 vmmpepl 168 198769 0 196561 153 44 109 118 0 357 2 vmsppl 464 3008 0 2977 7 2 5 6 0 8 0 rwobjpl 56 62101 0 55648 94 2 92 92 0 8 0 pdppl 4096 6026 0 5954 208 126 82 92 0 8 10 pvpl 32 1072885 0 1056127 333 153 180 333 0 265 30 pmappl 248 3008 0 2977 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1075 0 186 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bfcff0) 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 __mp_lock(ffffffff82d48c68) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d48c68) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x41 sys/dev/kcov.c:164 reaper(ffff8000211b37f0) at reaper+0x160 sys/kern/kern_exit.c:454 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff82bfcff0) 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 __mp_lock(ffffffff82d48c68) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d48c68) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x41 sys/dev/kcov.c:164 reaper(ffff8000211b37f0) at reaper+0x160 sys/kern/kern_exit.c:454 end trace frame: 0x0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279cfd2) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f915,ffffffff8283c480,2bb,ffffffff827a1cb3) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(95fdd4fb) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd80795c01b0) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd80795c01b0) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000211d8ff0,fffffd80795c01b0,fffffd80795c0238,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000211d8ff0,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000211d8ff0) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000211d8ff0,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000211d8ff0,ffff8000218fbd80,ffff8000218fbdd0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000218fbe50) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000218fbe50) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7cd94cb1d620, count: 2 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279cfd2) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281f915,ffffffff8283c480,2bb,ffffffff827a1cb3) at __assert+0x29 sys/kern/subr_prf.c:157 splraise(95fdd4fb) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699 mtx_enter_try(fffffd80795c01b0) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291 mtx_enter(fffffd80795c01b0) at mtx_enter+0x4f sys/kern/kern_lock.c:266 knote_remove(ffff8000211d8ff0,fffffd80795c01b0,fffffd80795c0238,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881 knote_fdclose(ffff8000211d8ff0,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934 fdfree(ffff8000211d8ff0) at fdfree+0xdf sys/kern/kern_descrip.c:1196 exit1(ffff8000211d8ff0,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206 sys_exit(ffff8000211d8ff0,ffff8000218fbd80,ffff8000218fbdd0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000218fbe50) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000218fbe50) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7cd94cb1d620, count: -13