uvm_fault(0xffffffff8285b1b8, 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(0xffffffff8285b1b8, 0xfffffd000000001c, 0, 1) -> e m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 end trace frame: 0xffff800023f0b900, count: 0 ddb{0}> trace m_free(fffffd0000000000) at m_free+0x58 sys/sys/percpu.h:125 ml_purge(ffff800023f0b918) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline] ml_purge(ffff800023f0b918) 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(ffff800023f0ba40) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807b6d44e8,7,fffffd807f7bfae0,ffff800023fa0c58) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80668af608,ffff800023fa0c58) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80668af608,ffff800023fa0c58) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80668af608,ffff800023fa0c58) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80668af608,ffff800023fa0c58) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800023fa0c58) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800023fa0c58,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800023fa0c58,ffff800023f0bcd0,ffff800023f0bd20) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023f0bda0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f0bda0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffaa70, count: -14 ddb{0}> show registers rdi 0 rsi 0x5c1bf acpi_pdirpa+0x48027 rbp 0xffff800023f0b8c0 rbx 0 rdx 0x5c1be acpi_pdirpa+0x48026 rcx 0xffffffff826ea6c0 mbstat_boot_boot_cpumem rax 0 r8 0xffffffff8117b027 witness_assert+0x207 r9 0x5 r10 0xf3b28ff022128dcf r11 0x368ab9ddcb365c2c r12 0xfffffd8064adcc00 r13 0x2000 __ALIGN_SIZE+0x1000 r14 0xfffffd0000000000 r15 0xfffffd0000000000 rip 0xffffffff810c9cc8 m_free+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023f0b880 ss 0x10 m_free+0x58: movswq 0x1c(%r14),%rsi ddb{0}> show proc PROC (syz-executor.0) pid=387771 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff800023fa0298,0xffff800023fa1628 process=0xffff8000230fe030 user=0xffff800023f06000, vmspace=0xfffffd806e8ef458 estcpu=24, cpticks=26, pctcpu=0.27 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92868 52393 56241 0 3 0x80 nanosleep syz-executor.1 92868 25032 56241 0 3 0x4000080 netio syz-executor.1 92868 264302 56241 0 3 0x4000080 fsleep syz-executor.1 31044 16633 0 0 3 0x14280 nfsidl nfsio 8632 341527 0 0 3 0x14280 nfsidl nfsio 51366 370751 0 0 3 0x14280 nfsidl nfsio 75459 152132 0 0 3 0x14280 nfsidl nfsio 49617 200745 0 0 3 0x14280 nfsidl nfsio 13856 288979 0 0 3 0x14280 nfsidl nfsio 690 78192 0 0 3 0x14280 nfsidl nfsio 6727 336911 0 0 3 0x14280 nfsidl nfsio 66648 128057 0 0 3 0x14280 nfsidl nfsio 10200 387175 0 0 3 0x14280 nfsidl nfsio 53926 120040 0 0 3 0x14280 nfsidl nfsio 15209 185829 0 0 3 0x14280 nfsidl nfsio 3327 375016 0 0 3 0x14280 nfsidl nfsio 39850 360746 0 0 3 0x14280 nfsidl nfsio 82954 118519 0 0 3 0x14280 nfsidl nfsio 29339 217546 0 0 3 0x14280 nfsidl nfsio 72429 370737 0 0 3 0x14280 nfsidl nfsio 49500 480520 0 0 3 0x14280 nfsidl nfsio 4055 458379 0 0 3 0x14280 nfsidl nfsio 38699 396796 0 0 3 0x14280 nfsidl nfsio 93072 298874 0 0 3 0x14200 bored sosplice 56241 19571 43196 0 2 0x2 syz-executor.1 43196 349132 43395 0 3 0x82 thrsleep syz-fuzzer 43196 130085 43395 0 3 0x4000082 thrsleep syz-fuzzer 43196 415194 43395 0 3 0x4000082 thrsleep syz-fuzzer 43196 518643 43395 0 2 0x4000482 syz-fuzzer 43196 212781 43395 0 3 0x4000082 thrsleep syz-fuzzer 43196 109959 43395 0 3 0x4000082 thrsleep syz-fuzzer 43196 421370 43395 0 3 0x4000082 thrsleep syz-fuzzer 43196 294018 43395 0 7 0x4000082 syz-fuzzer 43196 159371 43395 0 3 0x4000082 thrsleep syz-fuzzer 43196 481787 43395 0 3 0x4000082 thrsleep syz-fuzzer 43395 483804 13589 0 3 0x10008a pause ksh 13589 459764 68764 0 3 0x92 select sshd 45672 479475 1 0 3 0x100083 ttyin getty 68764 412075 1 0 3 0x80 select sshd 51954 361726 59762 74 3 0x100092 bpf pflogd 59762 157366 1 0 3 0x80 netio pflogd 75553 420724 3747 73 2 0x100010 syslogd 3747 2565 1 0 3 0x100082 netio syslogd 10510 335042 1 77 3 0x100090 poll dhclient 73261 437578 1 0 3 0x80 poll dhclient 68739 39937 0 0 3 0x14200 bored smr 55708 389075 0 0 2 0x14200 zerothread 54628 469198 0 0 3 0x14200 aiodoned aiodoned 55936 477799 0 0 3 0x14200 syncer update 11966 279303 0 0 3 0x14200 cleaner cleaner 60753 224981 0 0 3 0x14200 reaper reaper 88965 487106 0 0 3 0x14200 pgdaemon pagedaemon 60523 291046 0 0 3 0x14200 bored crynlk 56236 39174 0 0 3 0x14200 bored crypto 73185 292855 0 0 3 0x40014200 acpi0 acpi0 75657 117132 0 0 3 0x40014200 idle1 199 499320 0 0 3 0x14200 bored softnet 31880 197027 0 0 3 0x14200 bored systqmp 90272 277982 0 0 3 0x14200 bored systq 36399 492447 0 0 3 0x40014200 bored softclock 8532 505314 0 0 3 0x40014200 idle0 1 343346 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 9509 6413K 7185K 78643K 11537 0 pcb 13 8K 8K 78643K 57 0 rtable 75 3K 6K 78643K 349 0 ifaddr 67 13K 14K 78643K 141 0 counters 43 33K 34K 78643K 55 0 ioctlops 0 0K 4K 78643K 1501 0 iov 0 0K 36K 78643K 42 0 mount 1 1K 1K 78643K 1 0 vnodes 1226 77K 77K 78643K 1462 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 24 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 282 0 sigio 0 0K 0K 78643K 6 0 proc 61 63K 83K 78643K 472 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 28 0 in_multi 38 2K 2K 78643K 119 0 ether_multi 1 0K 0K 78643K 5 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 229 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 126 39K 40K 78643K 1864 0 UVM aobj 5 2K 2K 78643K 12 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 42 0 NDP 11 0K 0K 78643K 33 0 temp 94 3863K 3930K 78643K 7822 0 kqueue 3 4K 10K 78643K 27 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 6 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 31 0 29 1 0 1 1 0 8 0 rtentry 112 67 0 42 2 0 2 2 0 8 0 unpcb 120 177 0 167 1 0 1 1 0 8 0 syncache 264 10 0 10 3 2 1 1 0 8 1 tcpqe 32 36 0 36 2 2 0 1 0 8 0 tcpcb 544 119 0 115 1 0 1 1 0 8 0 inpcb 296 576 0 567 2 0 2 2 0 8 1 nd6 48 21 0 18 1 0 1 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 2 0 2 2 1 1 1 0 482 1 pffrnode 88 2 0 2 2 1 1 1 0 8 1 pffrent 40 4 0 4 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 21 0 19 2 1 1 1 0 8 0 pfstitem 24 37 0 9 1 0 1 1 0 8 0 pfstkey 112 39 0 11 2 1 1 2 0 8 0 pfstate 328 38 0 10 4 1 3 4 0 8 0 pfrule 1360 29 0 20 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 266 0 156 14 1 13 13 0 8 3 art_table 32 268 0 156 2 0 2 2 0 8 0 art_node 16 66 0 46 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 7 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 10 0 7 2 1 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1774 0 369 89 0 89 89 0 8 0 ffsino 272 1774 0 369 96 1 95 95 0 8 0 nchpl 144 2357 0 746 60 0 60 60 0 8 0 uvmvnodes 72 2018 0 0 37 0 37 37 0 8 0 vnodes 208 2018 0 0 107 0 107 107 0 8 0 namei 1024 6617 0 6617 1 0 1 1 0 8 1 percpumem 16 38 0 6 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 6 0 4 2 1 1 1 0 8 0 scxspl 192 6867 0 6867 8 7 1 7 0 8 1 plimitpl 152 33 0 25 1 0 1 1 0 8 0 sigapl 424 518 0 466 6 0 6 6 0 8 0 futexpl 56 4389 0 4388 1 0 1 1 0 8 0 knotepl 112 87 0 68 1 0 1 1 0 8 0 kqueuepl 144 52 0 49 1 0 1 1 0 8 0 pipelkpl 48 117 0 107 1 0 1 1 0 8 0 pipepl 120 234 0 218 1 0 1 1 0 8 0 fdescpl 496 482 0 466 3 0 3 3 0 8 0 filepl 152 3017 0 2927 5 0 5 5 0 8 0 lockfpl 104 320 0 319 1 0 1 1 0 8 0 lockfspl 48 159 0 158 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 96 324 0 315 1 0 1 1 0 8 0 zombiepl 144 467 0 465 1 0 1 1 0 8 0 processpl 984 518 0 465 7 0 7 7 0 8 0 procpl 624 1115 0 1051 6 0 6 6 0 8 0 sosppl 128 16 0 16 2 1 1 1 0 8 1 sockpl 400 786 0 765 5 1 4 4 0 8 1 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 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 154 0 0 19 0 19 19 0 8 0 mtagpl 96 139 0 0 4 0 4 4 0 8 0 mbufpl 256 471 0 0 29 0 29 29 0 8 0 bufpl 280 3788 0 132 262 0 262 262 0 8 0 anonpl 16 58780 0 42479 81 5 76 80 0 124 10 amapchunkpl 152 2509 0 2355 10 3 7 9 0 158 0 amappl16 192 2179 0 1306 54 8 46 54 0 8 2 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 255 0 248 1 0 1 1 0 8 0 amappl12 160 6 0 6 1 1 0 1 0 8 0 amappl11 152 53 0 38 1 0 1 1 0 8 0 amappl10 144 155 0 147 1 0 1 1 0 8 0 amappl9 136 387 0 386 1 0 1 1 0 8 0 amappl8 128 344 0 313 1 0 1 1 0 8 0 amappl7 120 117 0 105 1 0 1 1 0 8 0 amappl6 112 31 0 25 1 0 1 1 0 8 0 amappl5 104 267 0 250 1 0 1 1 0 8 0 amappl4 96 601 0 572 1 0 1 1 0 8 0 amappl3 88 228 0 219 1 0 1 1 0 8 0 amappl2 80 2918 0 2841 2 0 2 2 0 8 0 amappl1 72 20543 0 20068 23 13 10 18 0 8 0 amappl 80 1342 0 1293 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 11 0 7 1 0 1 1 0 8 0 uaddrrnd 24 486 0 468 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 486 0 468 1 0 1 1 0 8 0 vmmpekpl 168 7718 0 7677 2 0 2 2 0 8 0 vmmpepl 168 65307 0 63216 117 18 99 114 0 357 5 vmsppl 368 485 0 468 2 0 2 2 0 8 0 pdppl 4096 979 0 938 6 0 6 6 0 8 0 pvpl 32 195993 0 175956 191 4 187 191 0 265 25 pmappl 232 485 0 468 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 282 0 6 8 0 8 8 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(ffff800023f0b918) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline] ml_purge(ffff800023f0b918) 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(ffff800023f0ba40) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd807b6d44e8,7,fffffd807f7bfae0,ffff800023fa0c58) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd80668af608,ffff800023fa0c58) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80668af608,ffff800023fa0c58) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80668af608,ffff800023fa0c58) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80668af608,ffff800023fa0c58) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800023fa0c58) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800023fa0c58,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800023fa0c58,ffff800023f0bcd0,ffff800023f0bd20) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023f0bda0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f0bda0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffaa70, 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(ffffffff82927e48) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82927e48) at __mp_lock+0x12e sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82927e48,2) 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(ffff800020ea18f0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020ea18f0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020ea18f0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(fffffd806e91ecf0,118,ffffffff824630c7,0) at tsleep+0x1cc sys/kern/kern_synch.c:155 kqueue_sleep(fffffd806e91ecf0,0) at kqueue_sleep+0x1a0 sys/kern/kern_event.c:885 kqueue_scan(fffffd806e91ecf0,40,c000181698,0,ffff800020ddcea8,ffff800020ea1dcc) at kqueue_scan+0x2b6 sys/kern/kern_event.c:928 sys_kevent(ffff800020ddcea8,ffff800020ea1e40,ffff800020ea1e90) at sys_kevent+0x464 sys/kern/kern_event.c:640 syscall(ffff800020ea1f10) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ea1f10) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc000181e98, count: -14