uvm_fault(0xffffffff828805c8, 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(0xffffffff828805c8, 0xfffffd000000001c, 0, 1) -> e m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 end trace frame: 0xffff800020eddb30, count: 0 ddb{1}> trace m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 ml_purge(ffff800020eddb48) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline] ml_purge(ffff800020eddb48) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628 ifq_purge(ffff800000ac6278) at ifq_purge+0x9a sys/net/ifq.c:529 tun_dev_close(5d00,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460 spec_close(ffff800020eddc70) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807aefd418,7,fffffd807f7bf780,ffff800020dddad8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80665c3ac8,ffff800020dddad8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80665c3ac8,ffff800020dddad8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80665c3ac8,ffff800020dddad8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80665c3ac8,ffff800020dddad8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020dddad8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020dddad8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020dddad8,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020dddad8,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020dddad8) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800020ede0f0) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020ede0f0) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc4f0, count: -15 ddb{1}> show registers rdi 0 rsi 0x3a9f9 acpi_pdirpa+0x26861 rbp 0xffff800020eddaf0 rbx 0 rdx 0x3a9f8 acpi_pdirpa+0x26860 rcx 0xffff800000676d80 rax 0 r8 0xffffffff81305c47 witness_assert+0x207 r9 0x5 r10 0xe06b71ea1bbf483a r11 0xbdfa74ae131ac522 r12 0xfffffd8069a9ce00 r13 0x2000 __ALIGN_SIZE+0x1000 r14 0xfffffd0000000000 r15 0xfffffd0000000000 rip 0xffffffff81bfc188 m_free+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020eddab0 ss 0x10 m_free+0x58: movswq 0x1c(%r14),%rsi ddb{1}> show proc PROC (syz-executor.0) pid=324104 stat=onproc flags process=a proc=2000 pri=17, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddcc38,0xffff800020e09778 process=0xffff800020df0bb0 user=0xffff800020ed9000, vmspace=0xfffffd807efffcf0 estcpu=36, cpticks=3, pctcpu=0.49 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 86301 60627 1 0 3 0x100083 ttyin getty 39383 485961 0 0 3 0x14200 acct acct 29651 498069 68762 0 7 0x2 syz-executor.1 79535 387845 0 0 3 0x14280 nfsidl nfsio 94461 394966 0 0 3 0x14280 nfsidl nfsio 39244 215806 0 0 3 0x14280 nfsidl nfsio 55060 514066 0 0 3 0x14280 nfsidl nfsio 8455 480892 0 0 3 0x14280 nfsidl nfsio 80770 1494 0 0 3 0x14280 nfsidl nfsio 72264 443123 0 0 3 0x14280 nfsidl nfsio 59002 510846 0 0 3 0x14280 nfsidl nfsio 63810 42132 0 0 3 0x14280 nfsidl nfsio 238 384150 0 0 3 0x14280 nfsidl nfsio 13270 238610 0 0 3 0x14280 nfsidl nfsio 77785 425406 0 0 3 0x14280 nfsidl nfsio 27907 58100 0 0 3 0x14280 nfsidl nfsio 89267 307942 0 0 3 0x14280 nfsidl nfsio 55147 438398 0 0 3 0x14280 nfsidl nfsio 35491 70069 0 0 3 0x14280 nfsidl nfsio 65270 392325 0 0 3 0x14280 nfsidl nfsio 72552 132870 0 0 3 0x14280 nfsidl nfsio 9019 99018 0 0 3 0x14280 nfsidl nfsio 98581 124798 0 0 3 0x14280 nfsidl nfsio 79733 290637 0 0 3 0x14200 bored sosplice 68762 141574 58742 0 2 0x82 syz-fuzzer 68762 358907 58742 0 3 0x4000082 nanosleep syz-fuzzer 68762 219686 58742 0 3 0x4000082 thrsleep syz-fuzzer 68762 136579 58742 0 3 0x4000082 thrsleep syz-fuzzer 68762 238466 58742 0 3 0x4000082 thrsleep syz-fuzzer 68762 465189 58742 0 3 0x4000082 thrsleep syz-fuzzer 68762 14836 58742 0 3 0x4000082 thrsleep syz-fuzzer 68762 39758 58742 0 3 0x4000082 nanosleep syz-fuzzer 68762 48633 58742 0 3 0x4000082 thrsleep syz-fuzzer 68762 480838 58742 0 3 0x4000082 thrsleep syz-fuzzer 58742 340227 56459 0 3 0x10008a pause ksh 56459 192740 50085 0 3 0x92 select sshd 50085 460146 1 0 3 0x80 select sshd 96567 341861 4928 74 3 0x100092 bpf pflogd 4928 235786 1 0 3 0x80 netio pflogd 4863 176814 98150 73 3 0x100090 kqread syslogd 98150 468198 1 0 3 0x100082 netio syslogd 83254 62599 1 77 3 0x100090 poll dhclient 63515 315841 1 0 3 0x80 poll dhclient 24094 27490 0 0 3 0x14200 bored smr 9606 404617 0 0 2 0x14200 zerothread 7679 37993 0 0 3 0x14200 aiodoned aiodoned 28160 128605 0 0 3 0x14200 syncer update 24289 171618 0 0 3 0x14200 cleaner cleaner 48815 469980 0 0 3 0x14200 reaper reaper 43284 306097 0 0 3 0x14200 pgdaemon pagedaemon 26727 246359 0 0 3 0x14200 bored crynlk 39690 58635 0 0 3 0x14200 bored crypto 16801 172126 0 0 3 0x40014200 acpi0 acpi0 29255 248298 0 0 3 0x40014200 idle1 66564 295100 0 0 3 0x14200 bored softnet 74568 402751 0 0 3 0x14200 bored systqmp 96494 370191 0 0 3 0x14200 bored systq 20302 254164 0 0 3 0x40014200 bored softclock 99822 277860 0 0 3 0x40014200 idle0 1 19108 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 29651 (syz-executor.1) thread 0xffff800020e0a878 (498069) exclusive rrwlock inode r = 0 (0xfffffd806b1fad58) #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 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358 #5 ffs_inode_alloc+0x1e2 sys/ufs/ffs/ffs_alloc.c:394 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b1fa3c8) #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 domkdirat+0x75 sys/kern/vfs_syscalls.c:3036 #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9532 6438K 7340K 78643K 11877 0 pcb 13 8K 8K 78643K 124 0 rtable 116 5K 8K 78643K 642 0 ifaddr 93 18K 19K 78643K 232 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 65 0 ioctlops 0 0K 4K 78643K 1634 0 iov 0 0K 16K 78643K 102 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1609 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 13 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 122 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 788 0 sigio 0 0K 0K 78643K 12 0 proc 61 63K 83K 78643K 589 0 subproc 23 1K 2K 78643K 52 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 52 0 in_multi 83 3K 4K 78643K 231 0 ether_multi 1 0K 0K 78643K 11 0 mrt 0 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 276 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 130 56K 56K 78643K 3615 0 UVM aobj 30 4K 4K 78643K 38 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 101 0 NDP 13 0K 0K 78643K 46 0 temp 126 3866K 3934K 78643K 13515 0 kqueue 3 4K 12K 78643K 46 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 3 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 112 123 0 78 2 0 2 2 0 8 0 unpcb 120 391 0 381 1 0 1 1 0 8 0 syncache 264 13 0 13 4 4 0 1 0 8 0 sackhl 24 1 0 1 1 0 1 1 0 8 1 tcpqe 32 108 0 108 2 2 0 1 0 8 0 tcpcb 544 294 0 290 2 0 2 2 0 8 1 inpcb 296 1968 0 1961 4 2 2 2 0 8 1 rttmr 72 3 0 3 1 1 0 1 0 8 0 nd6 48 43 0 37 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 pffrag 232 7 0 6 1 0 1 1 0 482 0 pffrnode 88 7 0 6 1 0 1 1 0 8 0 pffrent 40 187 0 186 1 0 1 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 74 0 70 3 2 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 40 0 22 1 0 1 1 0 8 0 pfstkey 112 42 0 24 1 0 1 1 0 8 0 pfstate 328 41 0 23 4 1 3 3 0 8 0 pfrule 1360 44 0 31 3 1 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 581 0 361 19 5 14 15 0 8 0 art_table 32 583 0 361 2 0 2 2 0 8 0 art_node 16 120 0 78 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 14 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 120 0 110 1 0 1 1 0 8 0 shmpl 112 35 0 8 2 1 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2411 0 1008 89 0 89 89 0 8 0 ffsino 272 2411 0 1008 95 0 95 95 0 8 1 nchpl 144 3914 0 2317 60 0 60 60 0 8 0 uvmvnodes 72 2756 0 0 51 0 51 51 0 8 0 vnodes 208 2756 0 0 146 0 146 146 0 8 0 namei 1024 10744 0 10743 3 2 1 1 0 8 0 percpumem 16 43 0 11 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 11 0 8 1 0 1 1 0 8 0 pfiaddrpl 120 28 0 25 3 2 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 11365 0 11365 13 10 3 7 0 8 3 plimitpl 152 77 0 69 1 0 1 1 0 8 0 sigapl 424 1023 0 971 8 1 7 7 0 8 1 futexpl 56 12421 0 12421 3 2 1 1 0 8 1 knotepl 112 119 0 100 1 0 1 1 0 8 0 kqueuepl 144 129 0 127 1 0 1 1 0 8 0 pipepl 304 225 0 215 6 4 2 2 0 8 1 fdescpl 496 986 0 971 3 0 3 3 0 8 0 filepl 152 6715 0 6625 8 2 6 6 0 8 1 lockfpl 104 139 0 138 1 0 1 1 0 8 0 lockfspl 48 52 0 51 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 26 0 15 1 0 1 1 0 8 0 ucredpl 96 468 0 459 1 0 1 1 0 8 0 zombiepl 144 972 0 970 2 1 1 1 0 8 0 processpl 992 1023 0 970 8 1 7 7 0 8 0 procpl 624 2792 0 2730 6 0 6 6 0 8 0 sosppl 128 8 0 8 3 3 0 1 0 8 0 sockpl 400 2419 0 2400 8 3 5 5 0 8 3 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 11 0 0 2 0 2 2 0 8 0 mcl4k 4096 13 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 191 0 0 23 1 22 23 0 8 0 mtagpl 96 45 0 0 2 0 2 2 0 8 0 mbufpl 256 473 0 0 24 0 24 24 0 8 0 bufpl 280 5117 0 150 355 0 355 355 0 8 0 anonpl 16 110110 0 92878 98 18 80 81 0 124 8 amapchunkpl 152 5795 0 5648 18 10 8 14 0 158 1 amappl16 192 4746 0 3809 71 16 55 55 0 8 7 amappl15 184 272 0 270 1 0 1 1 0 8 0 amappl14 176 490 0 486 1 0 1 1 0 8 0 amappl13 168 35 0 32 1 0 1 1 0 8 0 amappl12 160 6 0 6 1 1 0 1 0 8 0 amappl11 152 423 0 407 1 0 1 1 0 8 0 amappl10 144 21 0 14 1 0 1 1 0 8 0 amappl9 136 394 0 393 1 0 1 1 0 8 0 amappl8 128 387 0 352 2 0 2 2 0 8 0 amappl7 120 128 0 113 1 0 1 1 0 8 0 amappl6 112 392 0 386 2 1 1 1 0 8 0 amappl5 104 529 0 513 1 0 1 1 0 8 0 amappl4 96 880 0 852 1 0 1 1 0 8 0 amappl3 88 229 0 223 1 0 1 1 0 8 0 amappl2 80 7099 0 7034 2 0 2 2 0 8 0 amappl1 72 31648 0 31220 23 13 10 18 0 8 0 amappl 80 3046 0 3001 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 37 0 8 1 0 1 1 0 8 0 uaddrrnd 24 997 0 979 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 997 0 979 1 0 1 1 0 8 0 vmmpekpl 168 11664 0 11623 2 0 2 2 0 8 0 vmmpepl 168 128954 0 126944 171 65 106 134 0 357 9 vmsppl 368 996 0 979 2 0 2 2 0 8 0 pdppl 4096 2001 0 1961 7 1 6 6 0 8 0 pvpl 32 323471 0 303047 221 30 191 191 0 265 23 pmappl 232 996 0 979 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 295 0 15 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(ffffffff82701ff0) 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(ffffffff828f5bd8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828f5bd8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828f5bd8,1) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800021ee7d80,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800021ee7d80,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800021ee7d80,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(fffffd80664f66d0,11,ffffffff8246c075,0) at tsleep+0x1cc sys/kern/kern_synch.c:155 biowait(fffffd80664f66d0) at biowait+0xa6 sys/kern/vfs_bio.c:1256 bwrite(fffffd80664f66d0) at bwrite+0x1e4 sys/kern/vfs_bio.c:765 VOP_BWRITE(fffffd80664f66d0) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:724 ufs_direnter(fffffd8066dd7000,fffffd807d887d00,ffff800021ee7fd0,ffff800021ee8320,fffffd806624db08) at ufs_direnter+0x8e3 sys/ufs/ufs/ufs_lookup.c:909 ufs_mkdir(ffff800021ee8170) at ufs_mkdir+0x70b sys/ufs/ufs/ufs_vnops.c:1251 VOP_MKDIR(fffffd8066dd7000,ffff800021ee82d0,ffff800021ee8320,ffff800021ee8200) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 domkdirat(ffff800020e0a878,ffffff9c,7f7ffffbde00,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 syscall(ffff800021ee84a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021ee84a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbde70, count: -18 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(ffff800020eddb48) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline] ml_purge(ffff800020eddb48) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628 ifq_purge(ffff800000ac6278) at ifq_purge+0x9a sys/net/ifq.c:529 tun_dev_close(5d00,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460 spec_close(ffff800020eddc70) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807aefd418,7,fffffd807f7bf780,ffff800020dddad8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80665c3ac8,ffff800020dddad8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80665c3ac8,ffff800020dddad8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80665c3ac8,ffff800020dddad8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80665c3ac8,ffff800020dddad8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020dddad8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020dddad8,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020dddad8,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020dddad8,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020dddad8) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800020ede0f0) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020ede0f0) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc4f0, count: -15