panic: kernel diagnostic assertion "len >= 0 && !M_READONLY(m)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/uipc_mbuf.c", line 1384 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 28283 60629 0 0 0x4000000 0 syz-executor.7 34771 66715 0 0x2 0x480 1 syz-executor.4 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82579a90) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ec6cc,ffffffff82560ab1,568,ffffffff8258f284) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd8075d17e00,ffffffde) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002ae29060,ffff800000cb2200,ffff80002ae28dc8,ffff80002ae28cc8) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(51700,ffff80002ae29060,1) at bpfwrite+0x169 sys/net/bpf.c:644 spec_write(ffff80002ae28ec0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8067ff2390,ffff80002ae29060,1,fffffd807f7d8840) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd806bf8ac00,ffff80002ae29060,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000ffff57a0,3,ffff80002ae29060,1,ffff80002ae29160) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff8000ffff57a0,ffff80002ae29108,ffff80002ae29160) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff8000ffff57a0,ffff80002ae29108,ffff80002ae29160) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002ae291d0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002ae291d0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x26f71eaafd0, 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 *cpu0: kernel diagnostic assertion "len >= 0 && !M_READONLY(m)" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/uipc_mbuf.c", line 1384 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82579a90) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ec6cc,ffffffff82560ab1,568,ffffffff8258f284) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd8075d17e00,ffffffde) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002ae29060,ffff800000cb2200,ffff80002ae28dc8,ffff80002ae28cc8) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(51700,ffff80002ae29060,1) at bpfwrite+0x169 sys/net/bpf.c:644 spec_write(ffff80002ae28ec0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8067ff2390,ffff80002ae29060,1,fffffd807f7d8840) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd806bf8ac00,ffff80002ae29060,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000ffff57a0,3,ffff80002ae29060,1,ffff80002ae29160) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff8000ffff57a0,ffff80002ae29108,ffff80002ae29160) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff8000ffff57a0,ffff80002ae29108,ffff80002ae29160) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002ae291d0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002ae291d0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x26f71eaafd0, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002ae28ae0 rbx 0xffffffff828ecbff cpu_info_full_primary+0x2bff rdx 0xffff800000c3bb80 rcx 0 rax 0xffff8000ffff57a0 r8 0 r9 0x8080808080808080 r10 0x78595e848b1087f2 r11 0x85a66b236dc7afc7 r12 0xffffffff828eca00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff82237da8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002ae28ad0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.7) pid=28283 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff80002ae457a0,0xffffffff82af1e70 process=0xffff8000ffff1908 user=0xffff80002ae24000, vmspace=0xfffffd806a4b12e8 estcpu=33, cpticks=0, pctcpu=0.1 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 86405 426181 22149 0 2 0 syz-executor.0 60648 313803 66715 0 2 0 syz-executor.4 60648 428806 66715 0 2 0x4000000 syz-executor.4 78185 144862 16223 0 2 0 syz-executor.1 78185 475656 16223 0 3 0x4000080 fsleep syz-executor.1 37603 443709 53969 0 2 0 syz-executor.3 60629 350657 74578 0 2 0 syz-executor.7 *60629 28283 74578 0 7 0x4000000 syz-executor.7 26531 513594 52012 0 2 0 syz-executor.2 26531 76088 52012 0 3 0x4000080 fsleep syz-executor.2 5863 232467 8741 0 2 0 syz-executor.5 5863 319923 8741 0 3 0x4000080 piperd syz-executor.5 5863 505448 8741 0 3 0x4000080 fsleep syz-executor.5 5863 172523 8741 0 3 0x4000080 fsleep syz-executor.5 8741 171324 80972 0 2 0x2 syz-executor.5 22149 496499 80972 0 3 0x82 nanoslp syz-executor.0 16223 163597 80972 0 2 0x482 syz-executor.1 57613 221080 0 0 3 0x14200 acct acct 52012 397292 80972 0 2 0x2 syz-executor.2 53969 351861 80972 0 2 0x482 syz-executor.3 66715 34771 80972 0 7 0x482 syz-executor.4 58292 193697 0 0 3 0x14280 nfsidl nfsio 71728 18247 0 0 3 0x14280 nfsidl nfsio 40485 158559 0 0 3 0x14280 nfsidl nfsio 17511 497865 0 0 3 0x14280 nfsidl nfsio 91212 272350 0 0 3 0x14280 nfsidl nfsio 45065 121901 0 0 3 0x14280 nfsidl nfsio 99357 19150 0 0 3 0x14280 nfsidl nfsio 9130 119422 0 0 3 0x14280 nfsidl nfsio 84697 178557 0 0 3 0x14280 nfsidl nfsio 88407 273011 0 0 3 0x14280 nfsidl nfsio 63940 80398 0 0 3 0x14280 nfsidl nfsio 55133 118109 0 0 3 0x14280 nfsidl nfsio 37754 30621 0 0 3 0x14280 nfsidl nfsio 35919 354234 0 0 3 0x14280 nfsidl nfsio 17195 102413 0 0 3 0x14280 nfsidl nfsio 87282 177804 0 0 3 0x14280 nfsidl nfsio 51343 35488 0 0 3 0x14280 nfsidl nfsio 46173 485984 0 0 3 0x14280 nfsidl nfsio 36237 323391 0 0 3 0x14280 nfsidl nfsio 75179 307671 0 0 3 0x14280 nfsidl nfsio 74578 400728 80972 0 3 0x82 nanoslp syz-executor.7 80808 93332 0 0 3 0x14200 bored sosplice 43264 506725 80972 0 2 0x2 syz-executor.6 80972 252805 80983 0 3 0x82 thrsleep syz-fuzzer 80972 178954 80983 0 3 0x4000082 thrsleep syz-fuzzer 80972 41725 80983 0 3 0x4000082 thrsleep syz-fuzzer 80972 518671 80983 0 3 0x4000082 thrsleep syz-fuzzer 80972 510467 80983 0 3 0x4000082 thrsleep syz-fuzzer 80972 215679 80983 0 3 0x4000082 kqread syz-fuzzer 80972 19535 80983 0 3 0x4000082 thrsleep syz-fuzzer 80972 395471 80983 0 3 0x4000082 thrsleep syz-fuzzer 80983 183415 19226 0 3 0x10008a sigsusp ksh 19226 112949 41659 0 3 0x9a kqread sshd 40784 40296 1 0 3 0x100083 ttyopn getty 41659 492009 1 0 3 0x88 kqread sshd 706 104420 78175 74 3 0x100092 bpf pflogd 78175 22550 1 0 3 0x80 netio pflogd 27894 248177 24692 73 3 0x100090 kqread syslogd 24692 27979 1 0 3 0x100082 netio syslogd 9700 439691 1 0 3 0x100080 kqread resolvd 54728 37770 70295 77 3 0x100092 kqread dhcpleased 75744 8290 70295 77 3 0x100092 kqread dhcpleased 70295 120702 1 0 3 0x80 kqread dhcpleased 31609 146474 0 0 3 0x14200 bored smr 44250 514330 0 0 2 0x14200 zerothread 40955 197663 0 0 3 0x14200 aiodoned aiodoned 85454 276269 0 0 3 0x14200 syncer update 30272 377561 0 0 3 0x14200 cleaner cleaner 80803 427306 0 0 3 0x14200 reaper reaper 53374 265177 0 0 3 0x14200 pgdaemon pagedaemon 96213 76980 0 0 3 0x14200 bored viomb 77298 49296 0 0 3 0x40014200 acpi0 acpi0 39894 417768 0 0 3 0x40014200 idle1 81894 468488 0 0 3 0x14200 bored softnet 54773 30441 0 0 3 0x14200 bored systqmp 77864 99303 0 0 3 0x14200 bored systq 85218 108922 0 0 2 0x40014200 softclock 2034 266069 0 0 3 0x40014200 idle0 1 483512 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 60629 (syz-executor.7) thread 0xffff8000ffff57a0 (28283) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82ac44c8) #0 witness_lock+0x44d #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x19c sys/kern/sys_generic.c:381 #3 sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] #3 sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 #4 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10237 6644K 7097K 78643K 22964 0 pcb 13 24K 26K 78643K 1345 0 rtable 207 12K 15K 78643K 2454 0 ifaddr 104 21K 22K 78643K 1252 0 sysctl 2 0K 0K 78643K 2 0 counters 58 35K 36K 78643K 230 0 ioctlops 0 0K 4K 78643K 3223 0 iov 0 0K 16K 78643K 573 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1366 85K 86K 78643K 5463 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 76 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 68 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 89K 78643K 8375 0 sigio 0 0K 0K 78643K 164 0 proc 70 87K 111K 78643K 1767 0 subproc 104 6K 6K 78643K 559 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 616 0 in_multi 76 5K 7K 78643K 789 0 ether_multi 1 0K 0K 78643K 99 0 mrt 1 0K 0K 78643K 38 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 2K 78643K 2329 0 pfkey data 0 0K 0K 78643K 2 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 7 26K 26K 78643K 7 0 UVM amap 477 498K 499K 78643K 107478 0 UVM aobj 131 8K 8K 78643K 138 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 325 0 NDP 15 0K 2K 78643K 194 0 temp 153 4723K 4803K 78643K 66379 0 kqueue 12 18K 28K 78643K 528 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 120 335 0 332 3 1 2 2 0 8 1 rtentry 112 607 0 528 4 1 3 4 0 8 0 unpcb 136 5348 0 5333 67 65 2 6 0 8 1 syncache 296 25 0 25 10 9 1 1 0 8 1 tcpqe 32 12 0 12 5 4 1 1 0 8 1 tcpcb 736 3170 0 3162 122 120 2 17 0 8 1 arp 120 95 0 82 1 0 1 1 0 8 0 inpcb 304 8083 0 8074 141 137 4 17 0 8 3 rttmr 72 11 0 11 3 3 0 1 0 8 0 nd6 48 153 0 132 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 43 0 35 1 0 1 1 0 8 0 ppxss 1248 19 0 19 5 5 0 1 0 8 0 pfstscr 40 7 0 7 2 2 0 1 0 8 0 pffrag 232 74 0 74 2 1 1 1 0 482 1 pffrnode 88 74 0 74 2 1 1 1 0 8 1 pffrent 40 195 0 195 2 1 1 1 0 8 1 pfosfp 40 1432 0 1008 5 0 5 5 0 8 0 pfosfpen 112 1432 0 714 21 0 21 21 0 8 0 pfrktable 1344 314 0 302 10 9 1 2 0 8 0 pftag 88 23 0 15 1 0 1 1 0 8 0 pfqueue 264 3 0 3 1 1 0 1 0 8 0 pfstitem 24 31 0 29 1 0 1 1 0 8 0 pfstkey 112 49 0 47 1 0 1 1 0 8 0 pfstate 320 39 0 37 3 2 1 3 0 8 0 pfrule 1360 466 0 363 12 3 9 9 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2841 0 2499 41 19 22 31 0 8 0 art_table 32 2842 0 2499 4 1 3 4 0 8 0 art_node 16 603 0 535 1 0 1 1 0 8 0 sysvmsgpl 40 23 0 10 2 1 1 1 0 8 0 semapl 112 66 0 56 1 0 1 1 0 8 0 shmpl 112 135 0 7 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12293 0 10837 92 0 92 92 0 8 0 ffsino 272 12293 0 10837 98 0 98 98 0 8 0 nchpl 144 23098 0 21474 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 81440 0 81440 5 4 1 2 0 8 1 percpumem 16 127 0 86 1 0 1 1 0 8 0 vcpupl 2048 63 0 0 8 0 8 8 0 8 0 vmpool 560 72 0 9 5 0 5 5 0 8 0 pfiaddrpl 120 107 0 91 6 5 1 1 0 8 0 scsiplug 72 6 0 6 2 2 0 1 0 8 0 scxspl 216 70048 0 70048 22 21 1 8 0 8 1 plimitpl 152 1093 0 1078 1 0 1 1 0 8 0 sigapl 424 8650 0 8584 10 2 8 8 0 8 0 futexpl 64 65823 0 65819 5 4 1 1 0 8 0 knotepl 120 394 0 0 11 1 10 10 0 8 0 kqueuepl 216 1750 0 1742 37 32 5 5 0 8 4 pipepl 336 8806 0 8777 104 94 10 13 0 8 5 fdescpl 496 8593 0 8563 6 2 4 5 0 8 0 filepl 152 65983 0 65740 111 94 17 22 0 8 5 lockfpl 104 2012 0 2010 3 2 1 2 0 8 0 lockfspl 48 584 0 582 1 0 1 1 0 8 0 sessionpl 144 59 0 42 1 0 1 1 0 8 0 pgrppl 48 71 0 54 1 0 1 1 0 8 0 ucredpl 96 6524 0 6509 1 0 1 1 0 8 0 zombiepl 144 8584 0 8584 1 0 1 1 0 8 1 processpl 1064 8650 0 8584 6 1 5 5 0 8 0 procpl 672 24889 0 24809 19 10 9 9 0 8 0 srpgc 96 62 0 62 11 11 0 1 0 8 0 sosppl 168 71 0 71 12 12 0 1 0 8 0 sockpl 480 13771 0 13746 367 358 9 29 0 8 5 mcl64k 65536 26 0 0 4 1 3 3 0 8 0 mcl16k 16384 33 0 0 5 2 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 16 0 0 2 0 2 2 0 8 0 mcl2k 2048 362 0 0 30 2 28 30 0 8 0 mtagpl 96 677 0 0 17 1 16 17 0 8 0 mbufpl 256 1043 0 0 55 0 55 55 0 8 0 bufpl 288 16744 0 10408 453 0 453 453 0 8 0 anonpl 24 2461979 0 2439064 308 143 165 172 0 186 19 amapchunkpl 152 274365 0 273439 103 64 39 49 0 158 0 amappl16 200 24467 0 23725 124 73 51 52 0 8 8 amappl15 192 1444 0 1438 1 0 1 1 0 8 0 amappl14 184 1015 0 1008 1 0 1 1 0 8 0 amappl13 176 440 0 439 1 0 1 1 0 8 0 amappl12 168 1813 0 1807 1 0 1 1 0 8 0 amappl11 160 1472 0 1454 1 0 1 1 0 8 0 amappl10 152 819 0 809 1 0 1 1 0 8 0 amappl9 144 2305 0 2300 1 0 1 1 0 8 0 amappl8 136 1780 0 1669 4 0 4 4 0 8 0 amappl7 128 639 0 627 1 0 1 1 0 8 0 amappl6 120 2136 0 2107 2 1 1 2 0 8 0 amappl5 112 7047 0 7025 1 0 1 1 0 8 0 amappl4 104 4102 0 4067 4 2 2 2 0 8 1 amappl3 96 2556 0 2541 1 0 1 1 0 8 0 amappl2 88 2703 0 2649 3 1 2 3 0 8 0 amappl1 80 158158 0 157578 20 7 13 19 0 8 0 amappl 88 106207 0 105904 8 0 8 8 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 72 137 0 7 3 0 3 3 0 8 0 uaddrrnd 24 8665 0 8572 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8665 0 8572 1 0 1 1 0 8 0 vmmpekpl 168 105147 0 105076 4 0 4 4 0 8 0 vmmpepl 168 799492 0 796530 281 136 145 153 0 357 10 vmsppl 368 8664 0 8572 9 0 9 9 0 8 0 rwobjpl 56 199187 0 191304 129 14 115 116 0 8 2 pdppl 4096 17337 0 17207 498 366 132 132 0 8 2 pvpl 32 4411356 0 4386389 450 209 241 263 0 265 24 pmappl 248 8664 0 8572 6 0 6 6 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1549 0 613 27 0 27 27 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:440 panic(ffffffff82579a90) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ec6cc,ffffffff82560ab1,568,ffffffff8258f284) at __assert+0x25 sys/kern/subr_prf.c:161 m_align(fffffd8075d17e00,ffffffde) at m_align+0x1a0 sys/kern/uipc_mbuf.c:1385 bpf_movein(ffff80002ae29060,ffff800000cb2200,ffff80002ae28dc8,ffff80002ae28cc8) at bpf_movein+0x25e sys/net/bpf.c:228 bpfwrite(51700,ffff80002ae29060,1) at bpfwrite+0x169 sys/net/bpf.c:644 spec_write(ffff80002ae28ec0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8067ff2390,ffff80002ae29060,1,fffffd807f7d8840) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd806bf8ac00,ffff80002ae29060,1) at vn_write+0x1a1 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000ffff57a0,3,ffff80002ae29060,1,ffff80002ae29160) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_pad_pwrite(ffff8000ffff57a0,ffff80002ae29108,ffff80002ae29160) at sys_pad_pwrite+0x92 sys_pwrite sys/kern/vfs_syscalls.c:3354 [inline] sys_pad_pwrite(ffff8000ffff57a0,ffff80002ae29108,ffff80002ae29160) at sys_pad_pwrite+0x92 sys/kern/vfs_syscalls.c:3426 syscall(ffff80002ae291d0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002ae291d0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x26f71eaafd0, count: -13 ddb{0}> machine ddbcpu 1