uvm_fault(0xffffffff827b1ca0, 0xfffffd000000001c, 0, 1) -> e kernel: page fault trap, code=0 Stopped at m_free+0x58: movswq 0x1c(%r14),%rsi ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff827b1ca0, 0xfffffd000000001c, 0, 1) -> e m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 end trace frame: 0xffff800020edced0, count: 0 ddb{1}> trace m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 ml_purge(ffff800020edcee8) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline] ml_purge(ffff800020edcee8) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628 ifq_purge(ffff800000ac6278) at ifq_purge+0x9a sys/net/ifq.c:462 tun_dev_close(5d00,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460 spec_close(ffff800020edd010) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e3304e8,7,fffffd807f7bf960,ffff800020dddd48) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8066d69148,ffff800020dddd48) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8066d69148,ffff800020dddd48) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8066d69148,ffff800020dddd48) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8066d69148,ffff800020dddd48) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020dddd48) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020dddd48,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020dddd48,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020dddd48,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020dddd48) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800020edd490) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020edd490) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffddb50, count: -15 ddb{1}> show registers rdi 0 rsi 0x31447 acpi_pdirpa+0x1d2af rbp 0xffff800020edce90 rbx 0 rdx 0x31446 acpi_pdirpa+0x1d2ae rcx 0xffff800000676d80 rax 0 r8 0xffffffff819a54f7 witness_assert+0x207 r9 0x5 r10 0xb79fdde25889b9cc r11 0x10d2daf89af461d5 r12 0xfffffd806697aa00 r13 0x2000 __ALIGN_SIZE+0x1000 r14 0xfffffd0000000000 r15 0xfffffd0000000000 rip 0xffffffff81c29128 m_free+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020edce50 ss 0x10 m_free+0x58: movswq 0x1c(%r14),%rsi ddb{1}> show proc PROC (syz-executor.0) pid=277480 stat=onproc flags process=a proc=2000 pri=17, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddc4e8,0xffff800020e23618 process=0xffff800020df0f70 user=0xffff800020ed8000, vmspace=0xfffffd807efff730 estcpu=30, cpticks=2, pctcpu=0.1 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67807 303138 0 0 3 0x14280 nfsidl nfsio 52227 413110 0 0 3 0x14280 nfsidl nfsio 19437 395153 0 0 3 0x14280 nfsidl nfsio 38284 77736 0 0 3 0x14280 nfsidl nfsio 23920 63124 0 0 3 0x14280 nfsidl nfsio 44904 18638 0 0 3 0x14280 nfsidl nfsio 74519 94637 0 0 3 0x14280 nfsidl nfsio 20744 302055 0 0 3 0x14280 nfsidl nfsio 33564 67105 0 0 3 0x14280 nfsidl nfsio 97361 224863 0 0 3 0x14280 nfsidl nfsio 11399 384723 0 0 3 0x14280 nfsidl nfsio 12466 512508 0 0 3 0x14280 nfsidl nfsio 41379 10142 0 0 3 0x14280 nfsidl nfsio 21590 514238 0 0 3 0x14280 nfsidl nfsio 43210 436676 0 0 3 0x14280 nfsidl nfsio 83684 452532 0 0 3 0x14280 nfsidl nfsio 71907 509354 0 0 3 0x14280 nfsidl nfsio 3200 109517 0 0 3 0x14280 nfsidl nfsio 20639 51011 0 0 3 0x14280 nfsidl nfsio 11058 184498 0 0 3 0x14280 nfsidl nfsio 75968 441205 1 0 3 0x100083 ttyin getty 32654 218979 0 0 3 0x14200 bored sosplice 8176 233270 54728 0 2 0x2 syz-executor.1 54728 223014 24443 0 3 0x82 thrsleep syz-fuzzer 54728 72514 24443 0 3 0x4000082 nanosleep syz-fuzzer 54728 381043 24443 0 3 0x4000082 thrsleep syz-fuzzer 54728 461668 24443 0 3 0x4000082 nanosleep syz-fuzzer 54728 269615 24443 0 3 0x4000082 thrsleep syz-fuzzer 54728 413554 24443 0 3 0x4000082 thrsleep syz-fuzzer 54728 368892 24443 0 3 0x4000082 thrsleep syz-fuzzer 54728 487169 24443 0 7 0x4000002 syz-fuzzer 54728 163887 24443 0 3 0x4000082 thrsleep syz-fuzzer 54728 259660 24443 0 3 0x4000082 thrsleep syz-fuzzer 24443 382069 42717 0 3 0x10008a pause ksh 42717 308049 28386 0 3 0x92 select sshd 28386 329631 1 0 3 0x80 select sshd 31226 373865 26572 74 3 0x100092 bpf pflogd 26572 27198 1 0 3 0x80 netio pflogd 80424 216002 84553 73 3 0x100090 kqread syslogd 84553 354984 1 0 3 0x100082 netio syslogd 74967 83325 1 77 3 0x100090 poll dhclient 78038 296107 1 0 3 0x80 poll dhclient 10930 260375 0 0 3 0x14200 bored smr 34098 435284 0 0 2 0x14200 zerothread 56393 291253 0 0 3 0x14200 aiodoned aiodoned 12084 453878 0 0 3 0x14200 syncer update 60166 488845 0 0 3 0x14200 cleaner cleaner 23460 177966 0 0 3 0x14200 reaper reaper 92964 387955 0 0 3 0x14200 pgdaemon pagedaemon 38196 257498 0 0 3 0x14200 bored crynlk 1071 210352 0 0 3 0x14200 bored crypto 50844 159510 0 0 3 0x40014200 acpi0 acpi0 7724 360928 0 0 3 0x40014200 idle1 67477 190344 0 0 3 0x14200 bored softnet 14182 1888 0 0 3 0x14200 bored systqmp 36444 426711 0 0 3 0x14200 bored systq 26060 353585 0 0 3 0x40014200 bored softclock 68669 309109 0 0 3 0x40014200 idle0 1 58493 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 8176 (syz-executor.1) thread 0xffff800020e23608 (233270) exclusive rrwlock inode r = 0 (0xfffffd80645c2b48) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vget+0x1c8 sys/kern/vfs_subr.c:671 #6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1329 #8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #11 namei+0x63c sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b2065e8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 Process 54728 (syz-fuzzer) thread 0xffff800020ddc9c8 (487169) exclusive rwlock pipelk r = 0 (0xfffffd806fa11a90) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pipe_write+0x361 sys/kern/sys_pipe.c:559 #2 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #3 sys_write+0x83 sys/kern/sys_generic.c:285 #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9533 6422K 6990K 78643K 12458 0 pcb 13 8K 8K 78643K 107 0 rtable 96 4K 6K 78643K 369 0 ifaddr 88 17K 18K 78643K 152 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 59 0 ioctlops 0 0K 4K 78643K 1545 0 iov 0 0K 16K 78643K 72 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1704 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 123 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 1036 0 sigio 0 0K 0K 78643K 8 0 proc 61 63K 95K 78643K 520 0 subproc 23 1K 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 75 0 in_multi 46 2K 3K 78643K 138 0 ether_multi 1 0K 0K 78643K 21 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 262 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 134 88K 88K 78643K 4336 0 UVM aobj 21 6K 6K 78643K 23 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 89 0 NDP 14 0K 0K 78643K 29 0 temp 140 3868K 3933K 78643K 8984 0 kqueue 3 4K 8K 78643K 24 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 arp 64 10 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 51 0 49 1 0 1 1 0 8 0 rtentry 112 63 0 28 2 0 2 2 0 8 0 unpcb 120 1466 0 1455 1 0 1 1 0 8 0 syncache 264 8 0 8 3 3 0 1 0 8 0 tcpqe 32 44 0 44 1 1 0 1 0 8 0 tcpcb 544 1029 0 1025 1 0 1 1 0 8 0 inpcb 296 1455 0 1448 4 2 2 2 0 8 1 nd6 48 12 0 7 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 ppxss 1128 3 0 3 3 3 0 1 0 8 0 pffrag 232 3 0 3 1 1 0 1 0 482 0 pffrnode 88 3 0 3 1 1 0 1 0 8 0 pffrent 40 135 0 135 1 1 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 22 0 19 2 1 1 1 0 8 0 pfstitem 24 33 0 31 1 0 1 1 0 8 0 pfstkey 112 33 0 31 1 0 1 1 0 8 0 pfstate 328 33 0 31 2 1 1 2 0 8 0 pfrule 1360 31 0 22 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 304 0 118 13 1 12 13 0 8 0 art_table 32 305 0 118 2 0 2 2 0 8 0 art_node 16 62 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 3 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 119 0 109 1 0 1 1 0 8 0 shmpl 112 21 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2635 0 1233 89 0 89 89 0 8 0 ffsino 272 2635 0 1233 96 1 95 95 0 8 0 nchpl 144 4608 0 2996 60 0 60 60 0 8 0 uvmvnodes 72 3091 0 0 57 0 57 57 0 8 0 vnodes 208 3091 0 0 163 0 163 163 0 8 0 namei 1024 11109 0 11109 2 1 1 1 0 8 1 percpumem 16 40 0 8 1 0 1 1 0 8 0 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 560 8 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 6 0 4 1 0 1 1 0 8 0 scxspl 192 13120 0 13120 11 10 1 7 0 8 1 plimitpl 152 51 0 43 1 0 1 1 0 8 0 sigapl 424 1273 0 1222 6 0 6 6 0 8 0 futexpl 56 14227 0 14227 2 1 1 1 0 8 1 knotepl 112 82 0 63 1 0 1 1 0 8 0 kqueuepl 144 78 0 76 1 0 1 1 0 8 0 pipepl 304 170 0 160 4 3 1 2 0 8 0 fdescpl 496 1237 0 1222 3 0 3 3 0 8 0 filepl 152 7522 0 7432 5 0 5 5 0 8 1 lockfpl 104 154 0 153 1 0 1 1 0 8 0 lockfspl 48 52 0 51 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 96 727 0 717 1 0 1 1 0 8 0 zombiepl 144 1223 0 1221 1 0 1 1 0 8 0 processpl 984 1273 0 1221 7 0 7 7 0 8 0 procpl 624 3534 0 3473 6 0 6 6 0 8 0 sosppl 128 15 0 15 6 6 0 1 0 8 0 sockpl 400 2979 0 2959 11 7 4 4 0 8 1 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 173 0 0 20 0 20 20 0 8 0 mtagpl 96 207 0 0 6 0 6 6 0 8 0 mbufpl 256 619 0 0 35 0 35 35 0 8 0 bufpl 280 5425 0 135 378 0 378 378 0 8 0 anonpl 16 117688 0 101565 105 32 73 82 0 124 2 amapchunkpl 152 7493 0 7350 25 18 7 13 0 158 0 amappl16 192 5291 0 4388 69 23 46 56 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 26 0 20 1 0 1 1 0 8 0 amappl13 168 429 0 425 1 0 1 1 0 8 0 amappl12 160 447 0 446 2 1 1 1 0 8 0 amappl11 152 53 0 38 1 0 1 1 0 8 0 amappl10 144 17 0 15 1 0 1 1 0 8 0 amappl9 136 941 0 939 1 0 1 1 0 8 0 amappl8 128 348 0 318 2 0 2 2 0 8 0 amappl7 120 119 0 107 1 0 1 1 0 8 0 amappl6 112 29 0 24 1 0 1 1 0 8 0 amappl5 104 1159 0 1142 1 0 1 1 0 8 0 amappl4 96 498 0 470 1 0 1 1 0 8 0 amappl3 88 121 0 116 1 0 1 1 0 8 0 amappl2 80 9056 0 8995 2 0 2 2 0 8 0 amappl1 72 35700 0 35269 24 14 10 18 0 8 0 amappl 80 3782 0 3735 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 22 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1245 0 1222 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1245 0 1222 1 0 1 1 0 8 0 vmmpekpl 168 13489 0 13454 2 0 2 2 0 8 0 vmmpepl 168 152794 0 150797 142 44 98 110 0 357 3 vmsppl 368 1244 0 1222 3 0 3 3 0 8 0 pdppl 4096 2497 0 2452 7 0 7 7 0 8 0 pvpl 32 348087 0 329554 234 55 179 193 0 265 20 pmappl 232 1244 0 1222 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 297 0 13 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82751ff0) 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 __mp_lock(ffffffff8292a830) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292a830) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff8292a830) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292a830) at __mp_lock+0x127 sys/kern/kern_lock.c:147 selwakeup(fffffd806fa11a20) at selwakeup+0x16 sys/kern/sys_generic.c:776 pipeselwakeup(fffffd806fa11a00) at pipeselwakeup+0x76 sys/kern/sys_pipe.c:369 pipe_write(fffffd806eadde48,ffff800020ea19f8,0) at pipe_write+0x74e sys/kern/sys_pipe.c:658 dofilewritev(ffff800020ddc9c8,1,ffff800020ea19f8,0,ffff800020ea1ae0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020ddc9c8,ffff800020ea1a90,ffff800020ea1ae0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020ea1b60) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ea1b60) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc0003cf948, count: -14 ddb{0}> machine ddbcpu 1 Stopped at m_free+0x58: movswq 0x1c(%r14),%rsi ddb{1}> trace m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 ml_purge(ffff800020edcee8) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline] ml_purge(ffff800020edcee8) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628 ifq_purge(ffff800000ac6278) at ifq_purge+0x9a sys/net/ifq.c:462 tun_dev_close(5d00,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460 spec_close(ffff800020edd010) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e3304e8,7,fffffd807f7bf960,ffff800020dddd48) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8066d69148,ffff800020dddd48) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8066d69148,ffff800020dddd48) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8066d69148,ffff800020dddd48) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8066d69148,ffff800020dddd48) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020dddd48) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020dddd48,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020dddd48,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020dddd48,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020dddd48) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800020edd490) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020edd490) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffddb50, count: -15