uvm_fault(0xffffffff82874878, 0xfffffd0000000008, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ml_purge+0x38: movq 0x8(%r12),%r12 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff82874878, 0xfffffd0000000008, 0, 1) -> e ml_purge(ffff800020ee1628) at ml_purge+0x38 sys/kern/uipc_mbuf.c:1627 end trace frame: 0xffff800020ee1670, count: 0 ddb{0}> trace ml_purge(ffff800020ee1628) at ml_purge+0x38 sys/kern/uipc_mbuf.c:1627 ifq_purge(ffff800000ac5278) 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(ffff800020ee1750) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd80763430d8,7,fffffd807f7bf720,ffff800020ddc758) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80681f2d28,ffff800020ddc758) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80681f2d28,ffff800020ddc758) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80681f2d28,ffff800020ddc758) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80681f2d28,ffff800020ddc758) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020ddc758) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020ddc758,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020ddc758,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020ddc758,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020ddc758) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800020ee1bd0) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020ee1bd0) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd21c0, count: -14 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020ee1610 rbx 0 rdx 0x6249e acpi_pdirpa+0x4e306 rcx 0 rax 0 r8 0xffffffff81826317 witness_assert+0x207 r9 0x5 r10 0x499f3a51900cb230 r11 0xf69a476f74728bba r12 0xfffffd0000000000 r13 0x2000 __ALIGN_SIZE+0x1000 r14 0xffff800020ee1628 r15 0xfffffd0000000000 rip 0xffffffff821523f8 ml_purge+0x38 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020ee15e0 ss 0x10 ml_purge+0x38: movq 0x8(%r12),%r12 ddb{0}> show proc PROC (syz-executor.0) pid=409496 stat=onproc flags process=a proc=2000 pri=17, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff800020dddad8,0xffff800020dddd58 process=0xffff800020df03e8 user=0xffff800020edc000, vmspace=0xfffffd807f000b80 estcpu=36, cpticks=1, pctcpu=0.24 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 87750 392566 0 0 3 0x14280 nfsidl nfsio 47046 340093 0 0 3 0x14280 nfsidl nfsio 76312 231321 0 0 3 0x14280 nfsidl nfsio 17343 49269 0 0 3 0x14280 nfsidl nfsio 75476 260467 0 0 3 0x14280 nfsidl nfsio 42584 232668 0 0 3 0x14280 nfsidl nfsio 14886 492251 0 0 3 0x14280 nfsidl nfsio 83934 83753 0 0 3 0x14280 nfsidl nfsio 21963 15303 0 0 3 0x14280 nfsidl nfsio 39766 40123 0 0 3 0x14280 nfsidl nfsio 84147 4770 0 0 3 0x14280 nfsidl nfsio 12477 317416 0 0 3 0x14280 nfsidl nfsio 36709 77707 0 0 3 0x14280 nfsidl nfsio 31789 162519 0 0 3 0x14280 nfsidl nfsio 37080 2309 0 0 3 0x14280 nfsidl nfsio 83362 300434 0 0 3 0x14280 nfsidl nfsio 11527 506346 0 0 3 0x14280 nfsidl nfsio 80261 346501 0 0 3 0x14280 nfsidl nfsio 81656 13744 0 0 3 0x14280 nfsidl nfsio 67097 190320 0 0 3 0x14280 nfsidl nfsio 78700 133110 0 0 3 0x14200 acct acct 66256 299809 0 0 3 0x14200 bored sosplice 9185 331228 49160 0 2 0x482 syz-executor.1 49160 180011 81312 0 3 0x82 thrsleep syz-fuzzer 49160 483947 81312 0 2 0x4000482 syz-fuzzer 49160 229765 81312 0 3 0x4000082 thrsleep syz-fuzzer 49160 115524 81312 0 3 0x4000082 thrsleep syz-fuzzer 49160 264508 81312 0 3 0x4000082 thrsleep syz-fuzzer 49160 391502 81312 0 3 0x4000082 thrsleep syz-fuzzer 49160 157347 81312 0 3 0x4000082 thrsleep syz-fuzzer 49160 105161 81312 0 3 0x4000082 thrsleep syz-fuzzer 49160 448919 81312 0 3 0x4000082 thrsleep syz-fuzzer 49160 130005 81312 0 7 0x4000082 syz-fuzzer 81312 96660 39698 0 3 0x10008a pause ksh 39698 366560 93803 0 3 0x92 select sshd 69364 104190 1 0 3 0x100083 ttyopn getty 93803 218483 1 0 3 0x80 select sshd 94765 469875 11881 74 3 0x100092 bpf pflogd 11881 29003 1 0 3 0x80 netio pflogd 91761 20722 81316 73 3 0x100090 kqread syslogd 81316 72286 1 0 3 0x100082 netio syslogd 89137 120919 1 77 3 0x100090 poll dhclient 44760 267187 1 0 3 0x80 poll dhclient 93588 392394 0 0 3 0x14200 bored smr 72133 308196 0 0 2 0x14200 zerothread 614 23479 0 0 3 0x14200 aiodoned aiodoned 65528 363265 0 0 3 0x14200 syncer update 4549 513843 0 0 3 0x14200 cleaner cleaner 17086 209769 0 0 3 0x14200 reaper reaper 10356 169809 0 0 3 0x14200 pgdaemon pagedaemon 16917 464948 0 0 3 0x14200 bored crynlk 62918 224847 0 0 3 0x14200 bored crypto 4353 488953 0 0 3 0x40014200 acpi0 acpi0 65413 475876 0 0 3 0x40014200 idle1 60146 187007 0 0 3 0x14200 bored softnet 51949 127360 0 0 3 0x14200 bored systqmp 15193 282005 0 0 3 0x14200 bored systq 74950 428510 0 0 2 0x40014200 softclock 29433 196402 0 0 3 0x40014200 idle0 1 43817 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9528 6427K 7186K 78643K 12254 0 pcb 13 8K 8K 78643K 66 0 rtable 125 16K 19K 78643K 411 0 ifaddr 90 18K 18K 78643K 169 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 59 0 ioctlops 0 0K 4K 78643K 1558 0 iov 0 0K 16K 78643K 162 0 mount 1 1K 1K 78643K 1 0 vnodes 1231 77K 78K 78643K 1665 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 12 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 212 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 477 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 83K 78643K 487 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 57 0 in_multi 61 3K 3K 78643K 137 0 ether_multi 1 0K 0K 78643K 9 0 mrt 0 0K 0K 78643K 10 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 261 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 145 72K 77K 78643K 2563 0 UVM aobj 29 2K 2K 78643K 30 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 44 0 NDP 13 0K 0K 78643K 32 0 temp 114 3869K 3934K 78643K 9572 0 kqueue 3 4K 9K 78643K 33 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 arp 64 7 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 33 0 31 1 0 1 1 0 8 0 rtentry 112 76 0 35 2 0 2 2 0 8 0 unpcb 120 283 0 273 1 0 1 1 0 8 0 syncache 264 12 0 12 4 3 1 1 0 8 1 tcpqe 32 859 0 859 2 2 0 1 0 8 0 tcpcb 544 183 0 172 2 1 1 2 0 8 0 inpcb 296 640 0 631 2 0 2 2 0 8 1 rttmr 72 4 0 4 1 1 0 1 0 8 0 nd6 48 18 0 14 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 3 0 3 2 1 1 1 0 482 1 pffrnode 88 3 0 3 2 1 1 1 0 8 1 pffrent 40 12 0 12 2 1 1 1 0 8 1 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 27 0 18 2 1 1 2 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 17 0 5 1 0 1 1 0 8 0 pfstkey 112 17 0 5 1 0 1 1 0 8 0 pfstate 328 15 0 5 2 0 2 2 0 8 0 pfsrctr 152 3 0 3 1 1 0 1 0 8 0 pfrule 1360 41 0 22 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 273 0 96 13 0 13 13 0 8 0 art_table 32 274 0 96 2 0 2 2 0 8 0 art_node 16 75 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 15 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 210 0 200 1 0 1 1 0 8 0 shmpl 112 28 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2054 0 650 89 0 89 89 0 8 0 ffsino 272 2054 0 650 95 0 95 95 0 8 0 nchpl 144 2929 0 1320 60 0 60 60 0 8 0 uvmvnodes 72 2478 0 0 46 0 46 46 0 8 0 vnodes 208 2478 0 0 131 0 131 131 0 8 0 namei 1024 8325 0 8325 1 0 1 1 0 8 1 percpumem 16 40 0 8 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 8 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 11 0 3 1 0 1 1 0 8 0 scxspl 192 8944 0 8944 8 7 1 7 0 8 1 plimitpl 152 48 0 40 1 0 1 1 0 8 0 sigapl 424 714 0 662 7 0 7 7 0 8 1 futexpl 56 8375 0 8375 1 0 1 1 0 8 1 knotepl 112 93 0 74 1 0 1 1 0 8 0 kqueuepl 144 112 0 109 1 0 1 1 0 8 0 pipelkpl 48 148 0 138 1 0 1 1 0 8 0 pipepl 120 296 0 278 1 0 1 1 0 8 0 fdescpl 496 677 0 662 3 0 3 3 0 8 0 filepl 152 4176 0 4086 5 0 5 5 0 8 1 lockfpl 104 98 0 97 1 0 1 1 0 8 0 lockfspl 48 38 0 37 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 382 0 373 1 0 1 1 0 8 0 zombiepl 144 663 0 661 1 0 1 1 0 8 0 processpl 984 714 0 661 7 0 7 7 0 8 0 procpl 624 1765 0 1703 6 0 6 6 0 8 0 sosppl 128 8 0 8 2 1 1 1 0 8 1 sockpl 400 963 0 943 5 1 4 4 0 8 1 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 13 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 185 0 0 23 0 23 23 0 8 0 mtagpl 96 40 0 0 1 0 1 1 0 8 0 mbufpl 256 333 0 0 20 0 20 20 0 8 0 bufpl 280 4419 0 132 307 0 307 307 0 8 0 anonpl 16 74747 0 57795 84 13 71 83 0 124 1 amapchunkpl 152 4799 0 4636 34 13 21 21 0 158 14 amappl16 192 3423 0 2517 58 11 47 57 0 8 1 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 28 0 21 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 14 0 11 1 0 1 1 0 8 0 amappl11 152 57 0 42 1 0 1 1 0 8 0 amappl10 144 236 0 230 1 0 1 1 0 8 0 amappl9 136 386 0 385 1 0 1 1 0 8 0 amappl8 128 366 0 321 2 0 2 2 0 8 0 amappl7 120 126 0 114 1 0 1 1 0 8 0 amappl6 112 32 0 24 1 0 1 1 0 8 0 amappl5 104 579 0 565 1 0 1 1 0 8 0 amappl4 96 491 0 460 1 0 1 1 0 8 0 amappl3 88 128 0 123 1 0 1 1 0 8 0 amappl2 80 4539 0 4477 2 0 2 2 0 8 0 amappl1 72 24837 0 24407 23 13 10 18 0 8 0 amappl 80 2000 0 1954 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 29 0 1 1 0 1 1 0 8 0 uaddrrnd 24 685 0 664 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 685 0 664 1 0 1 1 0 8 0 vmmpekpl 168 8933 0 8890 3 0 3 3 0 8 0 vmmpepl 168 88733 0 86731 117 18 99 110 0 357 2 vmsppl 368 684 0 664 3 0 3 3 0 8 1 pdppl 4096 1377 0 1334 7 1 6 7 0 8 0 pvpl 32 238258 0 218647 197 13 184 197 0 265 22 pmappl 232 684 0 664 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 279 0 6 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ml_purge(ffff800020ee1628) at ml_purge+0x38 sys/kern/uipc_mbuf.c:1627 ifq_purge(ffff800000ac5278) 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(ffff800020ee1750) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd80763430d8,7,fffffd807f7bf720,ffff800020ddc758) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80681f2d28,ffff800020ddc758) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80681f2d28,ffff800020ddc758) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80681f2d28,ffff800020ddc758) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80681f2d28,ffff800020ddc758) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020ddc758) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020ddc758,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020ddc758,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020ddc758,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020ddc758) at userret+0x199 sys/kern/kern_sig.c:1872 syscall(ffff800020ee1bd0) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020ee1bd0) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd21c0, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d70ff0) 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(ffffffff828cb728) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828cb728) at __mp_lock+0x127 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828cb728,2) 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(ffff800020ebf2d0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020ebf2d0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020ebf2d0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(fffffd806e90fd80,118,ffffffff8245f2b4,0) at tsleep+0x1cc sys/kern/kern_synch.c:155 kqueue_sleep(fffffd806e90fd80,0) at kqueue_sleep+0x1a0 sys/kern/kern_event.c:885 kqueue_scan(fffffd806e90fd80,40,c0000c7698,0,ffff800020dddad8,ffff800020ebf7ac) at kqueue_scan+0x2b6 sys/kern/kern_event.c:928 sys_kevent(ffff800020dddad8,ffff800020ebf820,ffff800020ebf870) at sys_kevent+0x464 sys/kern/kern_event.c:640 syscall(ffff800020ebf8f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ebf8f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc0000c7e98, count: -14