uvm_fault(0xffffffff827dcee0, 0xffffffff826a53e0, 0, 2) -> e kernel: page fault trap, code=0 Stopped at m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff827dcee0, 0xffffffff826a53e0, 0, 2) -> e m_copyback(ffff8000223a6720,138,0,ffff8000223a68e4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000223a6720,138,0,ffff8000223a68e4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff8000223a69a0, count: 0 ddb{0}> trace m_copyback(ffff8000223a6720,138,0,ffff8000223a68e4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000223a6720,138,0,ffff8000223a68e4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff8000000449c0,ffff8000223a69c8,fffffd806aad0200) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff8000223a6ac8,0,ffff800000b54010,0,ffffffff828822e0,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b8a000,ffff8000223a6d98) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000223a6d98,ffff8000223a6da4,29,0,ffff800000b8a000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b8a000,fffffd806aad0200) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff8000223a7088,ffff8000220ee000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff8000223a6ee0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e3908f8,ffff8000223a7088,11,fffffd807f7bf5a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd806a552608,ffff8000223a7088,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000212c5c60,f0,ffff8000223a7088,0,ffff8000223a7170) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000212c5c60,ffff8000223a7120,ffff8000223a7170) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000223a71f0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000223a71f0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaea80012ee0, count: -14 ddb{0}> show registers rdi 0 rsi 0xb6c0b acpi_pdirpa+0xa2a73 rbp 0xffff8000223a6700 rbx 0xffffffffffff8c4b rdx 0xb6c0a acpi_pdirpa+0xa2a72 rcx 0xffffffff826df180 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0x1 r10 0xaca430feef9af13f r11 0x2799870c70522d83 r12 0xfffffd806848d800 r13 0x108 r14 0x30 r15 0xffff8000223a6900 rip 0xffffffff81233bb9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000223a6640 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=373247 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000212c4f90,0xffffffff828b1030 process=0xffff8000224ed4b8 user=0xffff8000223a2000, vmspace=0xfffffd807effbb80 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 34635 314552 68977 0 2 0 syz-executor.0 *34635 373247 68977 0 7 0x4000000 syz-executor.0 68977 324593 97200 0 3 0x82 nanosleep syz-executor.0 15839 338385 97200 0 3 0x2 biowait syz-executor.1 89614 59433 0 0 3 0x14200 acct acct 56257 165812 0 0 3 0x14280 nfsidl nfsio 19244 243880 0 0 3 0x14280 nfsidl nfsio 31777 218705 0 0 3 0x14280 nfsidl nfsio 92720 137640 0 0 3 0x14280 nfsidl nfsio 60248 385042 0 0 3 0x14280 nfsidl nfsio 29213 36763 0 0 3 0x14280 nfsidl nfsio 53619 458331 0 0 3 0x14280 nfsidl nfsio 89972 300275 0 0 3 0x14280 nfsidl nfsio 47785 167224 0 0 3 0x14280 nfsidl nfsio 6136 490735 0 0 3 0x14280 nfsidl nfsio 92704 456604 0 0 3 0x14280 nfsidl nfsio 47770 38076 0 0 3 0x14280 nfsidl nfsio 88231 390789 0 0 3 0x14280 nfsidl nfsio 34806 182045 0 0 3 0x14280 nfsidl nfsio 29541 424662 0 0 3 0x14280 nfsidl nfsio 76797 12890 0 0 3 0x14280 nfsidl nfsio 69112 110351 0 0 3 0x14280 nfsidl nfsio 16154 261137 0 0 3 0x14280 nfsidl nfsio 96341 471730 0 0 3 0x14280 nfsidl nfsio 7280 376367 0 0 3 0x14280 nfsidl nfsio 47866 275603 1 0 3 0x100083 ttyopn getty 41200 429940 0 0 3 0x14200 bored sosplice 97200 63639 91948 0 3 0x82 thrsleep syz-fuzzer 97200 184255 91948 0 3 0x4000082 nanosleep syz-fuzzer 97200 404534 91948 0 3 0x4000082 thrsleep syz-fuzzer 97200 490836 91948 0 3 0x4000082 thrsleep syz-fuzzer 97200 337521 91948 0 3 0x4000082 kqread syz-fuzzer 97200 45139 91948 0 3 0x4000082 thrsleep syz-fuzzer 97200 366308 91948 0 3 0x4000082 thrsleep syz-fuzzer 97200 467423 91948 0 3 0x4000082 thrsleep syz-fuzzer 91948 246851 57393 0 3 0x10008a pause ksh 57393 151104 7686 0 3 0x92 select sshd 7686 25495 1 0 3 0x80 select sshd 25107 235085 29661 74 3 0x100092 bpf pflogd 29661 416540 1 0 3 0x80 netio pflogd 14733 89522 1124 73 3 0x100090 kqread syslogd 1124 54487 1 0 3 0x100082 netio syslogd 29819 257196 1 77 3 0x100090 poll dhclient 18531 244620 1 0 3 0x80 poll dhclient 77203 426207 0 0 3 0x14200 bored smr 11639 51759 0 0 2 0x14200 zerothread 49359 114549 0 0 3 0x14200 aiodoned aiodoned 64886 339983 0 0 3 0x14200 syncer update 60695 3843 0 0 3 0x14200 cleaner cleaner 78542 175059 0 0 3 0x14200 reaper reaper 7847 3945 0 0 3 0x14200 pgdaemon pagedaemon 22025 447940 0 0 3 0x14200 bored crynlk 8149 263039 0 0 3 0x14200 bored crypto 50064 183479 0 0 3 0x14200 bored viomb 34790 93571 0 0 3 0x40014200 acpi0 acpi0 63795 341634 0 0 7 0x40014200 idle1 47058 411506 0 0 3 0x14200 bored softnet 19701 337037 0 0 3 0x14200 bored systqmp 73296 30235 0 0 3 0x14200 bored systq 21158 444649 0 0 3 0x40014200 bored softclock 9562 385104 0 0 3 0x40014200 idle0 1 348893 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 34635 (syz-executor.0) thread 0xffff8000212c5c60 (373247) Process 15839 (syz-executor.1) thread 0xffff8000212aaa58 (338385) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9573 6462K 7107K 78643K 19311 0 pcb 13 8K 8K 78643K 334 0 rtable 117 6K 8K 78643K 1209 0 ifaddr 96 18K 19K 78643K 489 0 counters 43 33K 34K 78643K 183 0 ioctlops 0 0K 4K 78643K 1885 0 iov 0 0K 32K 78643K 274 0 mount 1 1K 1K 78643K 1 0 vnodes 1229 77K 78K 78643K 4323 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 35 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 752 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1825 197K 290K 78643K 13109 0 file desc 5 13K 25K 78643K 8677 0 sigio 0 0K 0K 78643K 95 0 proc 69 63K 95K 78643K 1093 0 subproc 32 2K 2K 78643K 112 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 589 0 in_multi 33 2K 2K 78643K 415 0 ether_multi 1 0K 0K 78643K 124 0 mrt 0 0K 0K 78643K 45 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 2K 78643K 650 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 241 209K 225K 78643K 20753 0 UVM aobj 42 3K 3K 78643K 44 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 399 0 NDP 17 0K 0K 78643K 109 0 temp 161 3987K 4052K 78643K 70293 0 kqueue 4 6K 24K 78643K 533 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 20 0 14 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 255 0 253 1 0 1 1 0 8 0 rtentry 112 145 0 101 2 0 2 2 0 8 0 unpcb 120 2211 0 2188 4 3 1 2 0 8 0 syncache 296 87 0 87 9 9 0 1 0 8 0 tcpqe 32 164 0 164 7 7 0 1 0 8 0 tcpcb 736 1466 0 1459 25 22 3 5 0 8 1 inpcb 296 3623 0 3614 10 8 2 3 0 8 1 rttmr 72 11 0 11 2 2 0 1 0 8 0 nd6 48 29 0 23 1 0 1 1 0 8 0 pkpcb 40 111 0 111 6 5 1 1 0 8 1 kcovpl 48 6 0 4 1 0 1 1 0 8 0 ppxss 1128 21 0 21 6 6 0 1 0 8 0 pfstscr 40 10 0 10 1 1 0 1 0 8 0 pffrag 232 42 0 41 4 3 1 1 0 482 0 pffrnode 88 42 0 41 4 3 1 1 0 8 0 pffrent 40 1336 0 1335 5 4 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 66 0 62 1 0 1 1 0 8 0 pftag 88 6 0 0 1 0 1 1 0 8 0 pfqueue 264 18 0 13 2 1 1 1 0 8 0 pfstitem 24 81 0 79 1 0 1 1 0 8 0 pfstkey 112 93 0 91 2 1 1 2 0 8 0 pfstate 328 88 0 86 7 6 1 6 0 8 0 pfrule 1360 192 0 147 5 1 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 608 0 413 14 1 13 13 0 8 0 art_table 32 609 0 413 2 0 2 2 0 8 0 art_node 16 144 0 104 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 16 1 0 1 1 0 8 0 semapl 112 750 0 740 1 0 1 1 0 8 0 shmpl 112 41 0 2 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12346 0 10951 88 0 88 88 0 8 0 ffsino 272 12346 0 10951 94 0 94 94 0 8 0 nchpl 144 22401 0 20811 60 0 60 60 0 8 0 uvmvnodes 72 6166 0 0 113 0 113 113 0 8 0 vnodes 208 6166 0 0 325 0 325 325 0 8 0 namei 1024 55907 0 55907 3 2 1 1 0 8 1 percpumem 16 102 0 70 1 0 1 1 0 8 0 vcpupl 1984 15 0 0 2 0 2 2 0 8 0 vmpool 560 26 0 11 3 1 2 2 0 8 0 pfiaddrpl 120 31 0 24 1 0 1 1 0 8 0 scsiplug 72 8 0 8 2 2 0 1 0 8 0 scxspl 216 69023 0 69022 18 17 1 8 0 8 0 plimitpl 152 452 0 444 1 0 1 1 0 8 0 sigapl 424 8904 0 8850 9 2 7 7 0 8 0 futexpl 56 66018 0 66018 3 2 1 1 0 8 1 knotepl 112 803 0 783 3 2 1 2 0 8 0 kqueuepl 152 4943 0 4940 1 0 1 1 0 8 0 pipepl 304 497 0 486 11 9 2 2 0 8 0 fdescpl 496 8866 0 8850 3 0 3 3 0 8 0 filepl 152 30840 0 30738 10 5 5 7 0 8 1 lockfpl 104 921 0 920 1 0 1 1 0 8 0 lockfspl 48 355 0 354 1 0 1 1 0 8 0 sessionpl 144 23 0 12 1 0 1 1 0 8 0 pgrppl 48 80 0 69 1 0 1 1 0 8 0 ucredpl 96 3958 0 3949 1 0 1 1 0 8 0 zombiepl 144 8850 0 8850 1 0 1 1 0 8 1 processpl 1056 8904 0 8850 4 0 4 4 0 8 0 procpl 656 19504 0 19442 7 1 6 6 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 89 0 89 10 10 0 1 0 8 0 sockpl 400 6248 0 6215 12 7 5 6 0 8 0 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 20 0 0 2 0 2 2 0 8 0 mcl9k 9216 15 0 0 2 0 2 2 0 8 0 mcl8k 8192 12 0 0 2 0 2 2 0 8 0 mcl4k 4096 18 0 0 3 1 2 3 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 328 0 0 17 0 17 17 0 8 0 mtagpl 96 505 0 0 13 0 13 13 0 8 0 mbufpl 256 1404 0 0 79 1 78 78 0 8 0 bufpl 280 19350 0 13101 447 0 447 447 0 8 0 anonpl 16 652520 0 645471 97 49 48 48 0 124 15 amapchunkpl 152 37383 0 37198 52 31 21 21 0 158 13 amappl16 192 31030 0 30719 56 32 24 28 0 8 8 amappl15 184 33 0 31 1 0 1 1 0 8 0 amappl14 176 25 0 19 1 0 1 1 0 8 0 amappl13 168 84 0 83 1 0 1 1 0 8 0 amappl12 160 4590 0 4586 2 1 1 1 0 8 0 amappl11 152 68 0 53 1 0 1 1 0 8 0 amappl10 144 386 0 379 1 0 1 1 0 8 0 amappl9 136 231 0 230 1 0 1 1 0 8 0 amappl8 128 471 0 341 5 0 5 5 0 8 0 amappl7 120 422 0 415 1 0 1 1 0 8 0 amappl6 112 463 0 440 1 0 1 1 0 8 0 amappl5 104 5494 0 5473 1 0 1 1 0 8 0 amappl4 96 4907 0 4874 1 0 1 1 0 8 0 amappl3 88 764 0 757 1 0 1 1 0 8 0 amappl2 80 66046 0 65971 3 1 2 3 0 8 0 amappl1 72 256903 0 256425 26 16 10 19 0 8 0 amappl 80 19923 0 19845 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 2 1 0 1 1 0 8 0 uaddrrnd 24 8892 0 8861 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8892 0 8861 1 0 1 1 0 8 0 vmmpekpl 168 40927 0 40887 2 0 2 2 0 8 0 vmmpepl 168 1101003 0 1099341 137 49 88 88 0 357 9 vmsppl 368 8891 0 8861 3 0 3 3 0 8 0 pdppl 4096 17791 0 17737 9 1 8 8 0 8 1 pvpl 32 2763031 0 2752682 287 160 127 127 0 265 33 pmappl 232 8891 0 8861 3 1 2 2 0 8 0 extentpl 40 57 0 39 1 0 1 1 0 8 0 phpool 112 365 0 38 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff8000223a6720,138,0,ffff8000223a68e4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000223a6720,138,0,ffff8000223a68e4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff8000000449c0,ffff8000223a69c8,fffffd806aad0200) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff8000223a6ac8,0,ffff800000b54010,0,ffffffff828822e0,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b8a000,ffff8000223a6d98) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000223a6d98,ffff8000223a6da4,29,0,ffff800000b8a000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b8a000,fffffd806aad0200) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff8000223a7088,ffff8000220ee000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff8000223a6ee0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e3908f8,ffff8000223a7088,11,fffffd807f7bf5a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd806a552608,ffff8000223a7088,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000212c5c60,f0,ffff8000223a7088,0,ffff8000223a7170) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000212c5c60,ffff8000223a7120,ffff8000223a7170) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000223a71f0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000223a71f0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaea80012ee0, 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+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d70ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5