uvm_fault(0xffffffff827df520, 0xfffffd000000001c, 0, 1) -> e kernel: page fault trap, code=0 Stopped at m_free+0x58: movswq 0x1c(%r14),%rsi ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff827df520, 0xfffffd000000001c, 0, 1) -> e m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 end trace frame: 0xffff800020e00ad0, count: 0 ddb{0}> trace m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 ml_purge(ffff800020e00ae8) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline] ml_purge(ffff800020e00ae8) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628 ifq_purge(ffff800000af7278) at ifq_purge+0x9a sys/net/ifq.c:462 tun_dev_close(5d01,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460 spec_close(ffff800020e00c10) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ed7b4e8,7,fffffd807f7bf5a0,ffff800020e23398) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806ca46d20,ffff800020e23398) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806ca46d20,ffff800020e23398) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806ca46d20,ffff800020e23398) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806ca46d20,ffff800020e23398) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e23398) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e23398,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e23398,ffff800020e00ea0,ffff800020e00ef0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800020e00f70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e00f70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffea530, count: -14 ddb{0}> show registers rdi 0 rsi 0x64089 acpi_pdirpa+0x4fef1 rbp 0xffff800020e00a90 rbx 0 rdx 0x64088 acpi_pdirpa+0x4fef0 rcx 0xffffffff826f19c0 mbstat_boot_boot_cpumem rax 0 r8 0xffffffff81837607 witness_assert+0x207 r9 0x5 r10 0x93ee3c9841464530 r11 0xefe684adf0bc3528 r12 0xfffffd80688ad900 r13 0x2000 __ALIGN_SIZE+0x1000 r14 0xfffffd0000000000 r15 0xfffffd0000000000 rip 0xffffffff81200b58 m_free+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020e00a50 ss 0x10 m_free+0x58: movswq 0x1c(%r14),%rsi ddb{0}> show proc PROC (syz-executor.1) pid=320720 stat=onproc flags process=1008 proc=2000 pri=26, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020e224f8,0xffffffff82915620 process=0xffff800020e08ba8 user=0xffff800020dfc000, vmspace=0xfffffd806e8e4178 estcpu=1, cpticks=1, pctcpu=0.1 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 39827 62532 1 0 3 0x100083 ttyin getty 74626 142313 0 0 3 0x14200 bored sosplice 54183 303278 25375 0 3 0x82 piperd syz-executor.0 25375 268946 4671 0 3 0x82 thrsleep syz-fuzzer 25375 119917 4671 0 3 0x4000082 thrsleep syz-fuzzer 25375 509876 4671 0 3 0x4000082 thrsleep syz-fuzzer 25375 352759 4671 0 3 0x4000082 thrsleep syz-fuzzer 25375 245777 4671 0 3 0x4000082 thrsleep syz-fuzzer 25375 453612 4671 0 3 0x4000082 thrsleep syz-fuzzer 25375 209515 4671 0 3 0x4000082 thrsleep syz-fuzzer 25375 306386 4671 0 3 0x4000082 thrsleep syz-fuzzer 25375 205080 4671 0 3 0x4000082 kqread syz-fuzzer 25375 406691 4671 0 3 0x4000082 thrsleep syz-fuzzer 25375 467636 4671 0 3 0x4000082 thrsleep syz-fuzzer 4671 49915 75461 0 3 0x10008a pause ksh 75461 427182 41280 0 3 0x92 select sshd 41280 368611 1 0 3 0x80 select sshd 49497 432803 95250 74 3 0x100092 bpf pflogd 95250 233828 1 0 3 0x80 netio pflogd 17499 320849 55448 73 3 0x100090 kqread syslogd 55448 100196 1 0 3 0x100082 netio syslogd 1202 366001 1 77 3 0x100090 poll dhclient 87918 173005 1 0 3 0x80 poll dhclient 19958 275807 0 0 3 0x14200 bored smr 30061 200571 0 0 3 0x14200 pgzero zerothread 62773 100854 0 0 3 0x14200 aiodoned aiodoned 840 358810 0 0 3 0x14200 syncer update 8753 110485 0 0 3 0x14200 cleaner cleaner 2243 375889 0 0 3 0x14200 reaper reaper 5677 26678 0 0 3 0x14200 pgdaemon pagedaemon 96049 395021 0 0 3 0x14200 bored crynlk 91268 337074 0 0 3 0x14200 bored crypto 87823 237356 0 0 3 0x40014200 acpi0 acpi0 13414 455582 0 0 7 0x40014200 idle1 60887 383480 0 0 3 0x14200 bored softnet 74342 60892 0 0 3 0x14200 bored systqmp 67178 494757 0 0 3 0x14200 bored systq 95430 412803 0 0 3 0x40014200 bored softclock 54563 423384 0 0 3 0x40014200 idle0 1 283913 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 9536 6422K 7331K 78643K 13453 0 pcb 13 8K 8K 78643K 124 0 rtable 97 6K 8K 78643K 463 0 ifaddr 91 17K 17K 78643K 194 0 sysctl 0 0K 0K 78643K 3 0 counters 43 33K 34K 78643K 67 0 ioctlops 0 0K 4K 78643K 1542 0 iov 0 0K 16K 78643K 320 0 mount 1 1K 1K 78643K 1 0 vnodes 1243 78K 78K 78643K 2029 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 20 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 112 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 686 0 sigio 0 0K 0K 78643K 10 0 proc 62 63K 95K 78643K 547 0 subproc 23 1K 3K 78643K 68 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 63 3K 3K 78643K 188 0 ether_multi 1 0K 0K 78643K 18 0 mrt 0 0K 0K 78643K 6 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 320 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 124 39K 47K 78643K 3224 0 UVM aobj 44 4K 4K 78643K 50 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 81 0 NDP 14 0K 0K 78643K 40 0 temp 135 3867K 3935K 78643K 17901 0 kqueue 3 4K 8K 78643K 29 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 12 0 4 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 88 0 56 2 0 2 2 0 8 0 unpcb 120 454 0 443 1 0 1 1 0 8 0 syncache 264 8 0 8 2 2 0 1 0 8 0 tcpqe 32 93 0 93 3 3 0 1 0 8 0 tcpcb 544 196 0 192 1 0 1 1 0 8 0 inpcb 296 697 0 688 12 10 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 23 0 20 1 0 1 1 0 8 0 pkpcb 40 16 0 16 4 4 0 1 0 8 0 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 7 0 6 2 1 1 1 0 482 0 pffrnode 88 7 0 6 2 1 1 1 0 8 0 pffrent 40 143 0 142 2 1 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 25 0 18 1 0 1 1 0 8 0 pfstitem 24 52 0 48 1 0 1 1 0 8 0 pfstkey 112 52 0 48 1 0 1 1 0 8 0 pfstate 328 50 0 47 3 1 2 3 0 8 0 pfrule 1360 29 0 20 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 386 0 210 16 5 11 13 0 8 0 art_table 32 387 0 210 2 0 2 2 0 8 0 art_node 16 87 0 59 1 0 1 1 0 8 0 sysvmsgpl 40 56 0 29 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 110 0 100 1 0 1 1 0 8 0 shmpl 112 48 0 6 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2361 0 959 89 0 89 89 0 8 0 ffsino 272 2361 0 959 95 0 95 95 0 8 0 nchpl 144 3671 0 2086 60 0 60 60 0 8 0 uvmvnodes 72 3078 0 0 56 0 56 56 0 8 0 vnodes 208 3078 0 0 162 0 162 162 0 8 0 namei 1024 10872 0 10872 14 13 1 1 0 8 1 percpumem 16 44 0 12 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 560 2 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 14 0 8 1 0 1 1 0 8 0 scsiplug 64 2 0 2 2 2 0 1 0 8 0 scxspl 192 10110 0 10110 15 14 1 7 0 8 1 plimitpl 152 54 0 46 1 0 1 1 0 8 0 sigapl 424 897 0 866 4 0 4 4 0 8 0 futexpl 56 10950 0 10950 14 13 1 1 0 8 1 knotepl 112 120 0 107 1 0 1 1 0 8 0 kqueuepl 144 93 0 91 1 0 1 1 0 8 0 pipelkpl 48 167 0 160 1 0 1 1 0 8 0 pipepl 120 334 0 321 1 0 1 1 0 8 0 fdescpl 496 881 0 866 3 0 3 3 0 8 0 filepl 152 5685 0 5600 5 0 5 5 0 8 0 lockfpl 104 156 0 155 1 0 1 1 0 8 0 lockfspl 48 62 0 61 1 0 1 1 0 8 0 sessionpl 112 21 0 10 1 0 1 1 0 8 0 pgrppl 48 27 0 16 1 0 1 1 0 8 0 ucredpl 96 763 0 754 1 0 1 1 0 8 0 zombiepl 144 867 0 866 1 0 1 1 0 8 0 processpl 984 897 0 866 5 0 5 5 0 8 0 procpl 624 2403 0 2362 4 0 4 4 0 8 0 sosppl 128 8 0 8 3 3 0 1 0 8 0 sockpl 400 1226 0 1206 7 4 3 4 0 8 0 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 7 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 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 176 0 0 18 1 17 18 0 8 0 mtagpl 96 367 0 0 9 0 9 9 0 8 0 mbufpl 256 959 0 0 53 0 53 53 0 8 0 bufpl 280 4484 0 133 311 0 311 311 0 8 0 anonpl 16 97490 0 85499 105 36 69 83 0 124 0 amapchunkpl 152 5204 0 5053 22 14 8 11 0 158 1 amappl16 192 4121 0 3237 70 23 47 53 0 8 2 amappl15 184 333 0 330 1 0 1 1 0 8 0 amappl14 176 27 0 23 1 0 1 1 0 8 0 amappl13 168 32 0 29 1 0 1 1 0 8 0 amappl12 160 6 0 4 2 1 1 1 0 8 0 amappl11 152 382 0 366 1 0 1 1 0 8 0 amappl10 144 327 0 322 1 0 1 1 0 8 0 amappl9 136 390 0 388 1 0 1 1 0 8 0 amappl8 128 373 0 340 3 1 2 2 0 8 0 amappl7 120 435 0 420 1 0 1 1 0 8 0 amappl6 112 358 0 352 1 0 1 1 0 8 0 amappl5 104 449 0 432 1 0 1 1 0 8 0 amappl4 96 850 0 822 1 0 1 1 0 8 0 amappl3 88 131 0 126 1 0 1 1 0 8 0 amappl2 80 6085 0 6015 2 0 2 2 0 8 0 amappl1 72 29012 0 28562 23 13 10 18 0 8 0 amappl 80 2670 0 2624 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 49 0 6 1 0 1 1 0 8 0 uaddrrnd 24 883 0 867 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 883 0 867 1 0 1 1 0 8 0 vmmpekpl 168 10318 0 10282 2 0 2 2 0 8 0 vmmpepl 168 115046 0 113063 178 49 129 129 0 357 35 vmsppl 368 882 0 867 2 0 2 2 0 8 0 pdppl 4096 1773 0 1735 7 1 6 6 0 8 0 pvpl 32 290231 0 275104 263 94 169 197 0 265 7 pmappl 232 882 0 867 7 5 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 320 0 27 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 ml_purge(ffff800020e00ae8) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline] ml_purge(ffff800020e00ae8) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628 ifq_purge(ffff800000af7278) at ifq_purge+0x9a sys/net/ifq.c:462 tun_dev_close(5d01,7) at tun_dev_close+0xc8 sys/net/if_tun.c:460 spec_close(ffff800020e00c10) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ed7b4e8,7,fffffd807f7bf5a0,ffff800020e23398) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd806ca46d20,ffff800020e23398) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806ca46d20,ffff800020e23398) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806ca46d20,ffff800020e23398) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806ca46d20,ffff800020e23398) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800020e23398) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800020e23398,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020e23398,ffff800020e00ea0,ffff800020e00ef0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800020e00f70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e00f70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffea530, 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 acpicpu_idle() at acpicpu_idle+0x331 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffff800020d70ff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5