uvm_fault(0xffffffff8263c810, 0xfffffd0000000008, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ml_purge+0x38: movq 0x8(%r12),%r12 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff8263c810, 0xfffffd0000000008, 0, 1) -> e ml_purge(ffff800021fb33c8) at ml_purge+0x38 sys/kern/uipc_mbuf.c:1627 end trace frame: 0xffff800021fb3410, count: 0 ddb{1}> trace ml_purge(ffff800021fb33c8) at ml_purge+0x38 sys/kern/uipc_mbuf.c:1627 ifq_purge(ffff8000009d5278) 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(ffff800021fb34f0) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e5fe688,7,fffffd807f7bf840,ffff800020ec7398) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80679fe868,ffff800020ec7398) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80679fe868,ffff800020ec7398) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80679fe868,ffff800020ec7398) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd80679fe868,ffff800020ec7398) at closef+0x11c sys/kern/kern_descrip.c:1260 fdfree(ffff800020ec7398) at fdfree+0x101 sys/kern/kern_descrip.c:1192 exit1(ffff800020ec7398,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020ec7398,ffff800021fb3780,ffff800021fb37d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021fb3850) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021fb3850) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe4ac0, count: -13 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800021fb33b0 rbx 0 rdx 0x2f92a acpi_pdirpa+0x1b792 rcx 0 rax 0 r8 0xffffffff8176cce7 witness_assert+0x207 r9 0x5 r10 0xef6c7d5ae5f400a9 r11 0x949a9a58f5f02275 r12 0xfffffd0000000000 r13 0x2000 __ALIGN_SIZE+0x1000 r14 0xffff800021fb33c8 r15 0xfffffd0000000000 rip 0xffffffff81353858 ml_purge+0x38 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021fb3380 ss 0x10 ml_purge+0x38: movq 0x8(%r12),%r12 ddb{1}> show proc PROC (syz-executor.0) pid=8023 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ec6018,0xffff800020ec7af8 process=0xffff800020e93730 user=0xffff800021fae000, vmspace=0xfffffd80628b0740 estcpu=36, cpticks=20, pctcpu=0.0 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17983 294165 57507 0 3 0x80 nanosleep syz-executor.1 17983 455031 57507 0 3 0x4000000 smrbar syz-executor.1 17983 372256 57507 0 3 0x4000080 fsleep syz-executor.1 19833 266854 0 0 3 0x14200 bored sosplice 57507 212480 35747 0 3 0x82 nanosleep syz-executor.1 35747 177737 24203 0 3 0x82 thrsleep syz-fuzzer 35747 361966 24203 0 3 0x4000082 thrsleep syz-fuzzer 35747 512637 24203 0 3 0x4000082 thrsleep syz-fuzzer 35747 132704 24203 0 3 0x4000082 thrsleep syz-fuzzer 35747 338754 24203 0 3 0x4000082 thrsleep syz-fuzzer 35747 379196 24203 0 3 0x4000082 thrsleep syz-fuzzer 35747 404569 24203 0 3 0x4000082 thrsleep syz-fuzzer 35747 421706 24203 0 2 0x4000082 syz-fuzzer 35747 420538 24203 0 3 0x4000082 thrsleep syz-fuzzer 35747 315757 24203 0 3 0x4000082 thrsleep syz-fuzzer 24203 370829 70457 0 3 0x10008a pause ksh 70457 85256 94316 0 3 0x92 select sshd 7298 513163 1 0 3 0x100083 ttyin getty 94316 520234 1 0 3 0x80 select sshd 53856 140629 96018 74 3 0x100092 bpf pflogd 96018 58316 1 0 3 0x80 netio pflogd 38609 193118 61031 73 3 0x100090 kqread syslogd 61031 421494 1 0 3 0x100082 netio syslogd 84298 117736 1 77 3 0x100090 poll dhclient 68700 438710 1 0 3 0x80 poll dhclient 96222 233211 0 0 3 0x14200 bored smr 74719 441857 0 0 2 0x14200 zerothread 38614 225861 0 0 3 0x14200 aiodoned aiodoned 54937 124361 0 0 3 0x14200 syncer update 12496 436700 0 0 3 0x14200 cleaner cleaner 73895 514571 0 0 7 0x14200 reaper 44762 180629 0 0 3 0x14200 pgdaemon pagedaemon 56359 371000 0 0 3 0x14200 bored crynlk 98771 101805 0 0 3 0x14200 bored crypto 84098 167425 0 0 3 0x40014200 acpi0 acpi0 23410 155967 0 0 3 0x40014200 idle1 28732 141572 0 0 3 0x14200 bored softnet 52783 346677 0 0 3 0x14200 bored systqmp 15265 291993 0 0 3 0x14200 bored systq 37482 422446 0 0 3 0x40014200 bored softclock 32280 300479 0 0 3 0x40014200 idle0 1 267738 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 9554 6439K 7129K 78643K 13592 0 pcb 13 8K 8K 78643K 146 0 rtable 85 3K 5K 78643K 3313 0 ifaddr 114 28K 31K 78643K 2060 0 counters 49 34K 34K 78643K 911 0 ioctlops 0 0K 4K 78643K 1564 0 iov 0 0K 16K 78643K 136 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 2029 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 65 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 5 13K 25K 78643K 1021 0 sigio 0 0K 0K 78643K 10 0 proc 63 63K 95K 78643K 509 0 subproc 23 1K 2K 78643K 36 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 76 0 in_multi 84 3K 4K 78643K 165 0 ether_multi 1 0K 0K 78643K 28 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 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 300 0 pfkey data 0 0K 0K 78643K 2 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 131 136K 152K 78643K 4226 0 UVM aobj 34 2K 2K 78643K 44 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 109 0 NDP 18 0K 0K 78643K 454 0 temp 137 3046K 3111K 78643K 21113 0 kqueue 3 4K 13K 78643K 69 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 12 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 56 0 54 1 0 1 1 0 8 0 rtentry 112 256 0 225 2 0 2 2 0 8 0 unpcb 120 938 0 928 1 0 1 1 0 8 0 syncache 264 7 0 7 3 3 0 1 0 8 0 tcpcb 544 580 0 576 2 1 1 2 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 4 0 4 1 1 0 1 0 8 0 inpcb 280 1346 0 1338 5 3 2 2 0 8 1 rttmr 72 4 0 4 2 1 1 1 0 8 1 nd6 48 10 0 8 1 0 1 1 0 8 0 pkpcb 40 10 0 10 3 3 0 1 0 8 0 ppxss 1128 3 0 3 2 2 0 1 0 8 0 pffrag 232 17 0 17 3 3 0 1 0 482 0 pffrnode 88 17 0 17 3 3 0 1 0 8 0 pffrent 40 552 0 552 3 3 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 pfstitem 24 84 0 46 1 0 1 1 0 8 0 pfstkey 112 84 0 46 2 0 2 2 0 8 0 pfstate 328 84 0 46 5 0 5 5 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 286 0 158 14 2 12 14 0 8 0 art_table 32 287 0 158 2 0 2 2 0 8 0 art_node 16 81 0 55 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 5 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 61 0 51 1 0 1 1 0 8 0 shmpl 112 42 0 11 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3450 0 2043 46 0 46 46 0 8 0 ffsino 272 3450 0 2043 95 0 95 95 0 8 0 nchpl 144 4827 0 3216 61 0 61 61 0 8 0 uvmvnodes 72 3820 0 0 70 0 70 70 0 8 0 vnodes 208 3820 0 0 202 0 202 202 0 8 0 namei 1024 14685 0 14685 1 0 1 1 0 8 1 percpumem 16 466 0 431 1 0 1 1 0 8 0 vcpupl 1984 11 0 0 2 0 2 2 0 8 0 vmpool 560 22 0 11 1 0 1 1 0 8 0 scxspl 192 14703 0 14703 8 7 1 5 0 8 1 plimitpl 152 63 0 55 1 0 1 1 0 8 0 sigapl 424 1237 0 1205 4 0 4 4 0 8 0 futexpl 56 16496 0 16495 1 0 1 1 0 8 0 knotepl 112 138 0 119 1 0 1 1 0 8 0 kqueuepl 144 187 0 185 1 0 1 1 0 8 0 pipelkpl 48 215 0 205 1 0 1 1 0 8 0 pipepl 120 430 0 414 1 0 1 1 0 8 0 fdescpl 496 1221 0 1205 3 0 3 3 0 8 0 filepl 152 8595 0 8503 6 1 5 6 0 8 0 lockfpl 104 173 0 172 1 0 1 1 0 8 0 lockfspl 48 59 0 58 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 615 0 606 1 0 1 1 0 8 0 zombiepl 144 1206 0 1204 1 0 1 1 0 8 0 processpl 984 1237 0 1204 5 0 5 5 0 8 0 procpl 624 3392 0 3346 4 0 4 4 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 27 0 27 4 3 1 1 0 8 1 sockpl 400 2354 0 2334 8 4 4 5 0 8 2 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 16 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 161 0 0 20 1 19 20 0 8 0 mtagpl 80 62 0 0 2 0 2 2 0 8 0 mbufpl 256 607 0 0 36 0 36 36 0 8 0 bufpl 280 8430 0 2163 448 0 448 448 0 8 0 anonpl 16 122497 0 107598 84 24 60 75 0 124 0 amapchunkpl 152 7425 0 7281 25 19 6 19 0 158 0 amappl16 192 6298 0 5488 67 26 41 52 0 8 0 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 6 0 5 2 1 1 1 0 8 0 amappl13 168 25 0 24 1 0 1 1 0 8 0 amappl12 160 15 0 15 2 1 1 1 0 8 1 amappl11 152 1062 0 1039 2 1 1 2 0 8 0 amappl10 144 21 0 16 1 0 1 1 0 8 0 amappl9 136 391 0 388 1 0 1 1 0 8 0 amappl8 128 315 0 298 1 0 1 1 0 8 0 amappl7 120 119 0 107 1 0 1 1 0 8 0 amappl6 112 1011 0 1004 1 0 1 1 0 8 0 amappl5 104 724 0 708 1 0 1 1 0 8 0 amappl4 96 917 0 883 2 1 1 2 0 8 0 amappl3 88 131 0 125 1 0 1 1 0 8 0 amappl2 80 8876 0 8794 3 1 2 3 0 8 0 amappl1 72 35746 0 35270 25 15 10 20 0 8 0 amappl 80 3668 0 3609 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 43 0 10 1 0 1 1 0 8 0 uaddrrnd 24 1243 0 1216 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1243 0 1216 1 0 1 1 0 8 0 vmmpekpl 168 12608 0 12568 2 0 2 2 0 8 0 vmmpepl 168 154404 0 152359 117 25 92 101 0 357 0 vmsppl 368 1242 0 1216 3 0 3 3 0 8 0 pdppl 4096 2494 0 2443 7 0 7 7 0 8 0 pvpl 32 361112 0 342456 188 36 152 181 0 265 1 pmappl 232 1242 0 1216 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 205 0 11 6 0 6 6 0 8 0