uvm_fault(0xffffffff8284a238, 0xffffffff826a22d8, 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(0xffffffff8284a238, 0xffffffff826a22d8, 0, 2) -> e m_copyback(ffff800023fd7830,138,0,ffff800023fd79f4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800023fd7830,138,0,ffff800023fd79f4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800023fd7ab0, count: 0 ddb{0}> trace m_copyback(ffff800023fd7830,138,0,ffff800023fd79f4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800023fd7830,138,0,ffff800023fd79f4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff80000007e000,ffff800023fd7ad8,fffffd806544e200) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800023fd7bd8,0,ffff800000ac1fd8,0,ffffffff828840d8,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000adc000,ffff800023fd7ea8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800023fd7ea8,ffff800023fd7eb4,29,0,ffff800000adc000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000adc000,fffffd806544e200) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800023fd8198,ffff800020eef000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800023fd7ff0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e7da688,ffff800023fd8198,11,fffffd807f7bf960) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806755f3a8,ffff800023fd8198,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000241093e8,f0,ffff800023fd8198,0,ffff800023fd8280) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000241093e8,ffff800023fd8230,ffff800023fd8280) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800023fd8300) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023fd8300) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9e3ad83a6b0, count: -14 ddb{0}> show registers rdi 0 rsi 0x964fd acpi_pdirpa+0x82365 rbp 0xffff800023fd7810 rbx 0xffffffffffff82c2 rdx 0x964fc acpi_pdirpa+0x82364 rcx 0xffffffff826e0cc0 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff8224dce8 pf_translate_a+0x1a8 r10 0x1 r11 0x4ab29540544d7d99 r12 0xfffffd8064a89700 r13 0x108 r14 0x30 r15 0xffff800023fd7a10 rip 0xffffffff815394e9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023fd7750 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=422232 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800024108a08,0xffffffff8287ee50 process=0xffff800020e007f0 user=0xffff800023fd3000, vmspace=0xfffffd8066f26010 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41971 130285 97144 0 7 0 syz-executor.0 *41971 422232 97144 0 7 0x4000000 syz-executor.0 91740 339947 4166 0 3 0x80 nanosleep syz-executor.1 91740 440429 4166 0 3 0x4000080 fsleep syz-executor.1 91740 379742 4166 0 3 0x4000080 netio syz-executor.1 91740 6775 4166 0 3 0x4000080 fsleep syz-executor.1 49791 227562 1 0 3 0x100083 ttyin getty 23911 491838 0 0 3 0x14200 bored sosplice 58559 107283 0 0 3 0x14200 acct acct 4166 183393 50004 0 3 0x82 nanosleep syz-executor.1 69290 350961 0 0 3 0x14280 nfsidl nfsio 5711 453697 0 0 3 0x14280 nfsidl nfsio 36382 263063 0 0 3 0x14280 nfsidl nfsio 3759 202376 0 0 3 0x14280 nfsidl nfsio 56573 333648 0 0 3 0x14280 nfsidl nfsio 90994 470712 0 0 3 0x14280 nfsidl nfsio 60509 280749 0 0 3 0x14280 nfsidl nfsio 22112 424200 0 0 3 0x14280 nfsidl nfsio 36955 85575 0 0 3 0x14280 nfsidl nfsio 22721 232125 0 0 3 0x14280 nfsidl nfsio 5593 400290 0 0 3 0x14280 nfsidl nfsio 85872 424371 0 0 3 0x14280 nfsidl nfsio 65629 347385 0 0 3 0x14280 nfsidl nfsio 85784 91623 0 0 3 0x14280 nfsidl nfsio 95792 415598 0 0 3 0x14280 nfsidl nfsio 25866 122337 0 0 3 0x14280 nfsidl nfsio 13005 273836 0 0 3 0x14280 nfsidl nfsio 51090 19161 0 0 3 0x14280 nfsidl nfsio 61746 302516 0 0 3 0x14280 nfsidl nfsio 49192 192483 0 0 3 0x14280 nfsidl nfsio 97144 338588 50004 0 3 0x82 nanosleep syz-executor.0 50004 428871 52994 0 3 0x82 thrsleep syz-fuzzer 50004 231510 52994 0 3 0x4000082 nanosleep syz-fuzzer 50004 350426 52994 0 3 0x4000082 thrsleep syz-fuzzer 50004 90601 52994 0 3 0x4000082 thrsleep syz-fuzzer 50004 408833 52994 0 3 0x4000082 kqread syz-fuzzer 50004 5023 52994 0 3 0x4000082 thrsleep syz-fuzzer 50004 25555 52994 0 3 0x4000082 thrsleep syz-fuzzer 50004 182132 52994 0 3 0x4000082 thrsleep syz-fuzzer 52994 162624 5370 0 3 0x10008a pause ksh 5370 279222 92702 0 3 0x92 select sshd 92702 6927 1 0 3 0x80 select sshd 60869 251021 21076 74 3 0x100092 bpf pflogd 21076 434665 1 0 3 0x80 netio pflogd 42952 286304 98325 73 3 0x100090 kqread syslogd 98325 270446 1 0 3 0x100082 netio syslogd 23474 211133 1 77 3 0x100090 poll dhclient 90381 399937 1 0 3 0x80 poll dhclient 89253 446549 0 0 3 0x14200 bored smr 3012 338888 0 0 3 0x14200 pgzero zerothread 21599 520329 0 0 3 0x14200 aiodoned aiodoned 10205 138449 0 0 3 0x14200 syncer update 56022 475707 0 0 3 0x14200 cleaner cleaner 44513 453547 0 0 3 0x14200 reaper reaper 40826 517505 0 0 3 0x14200 pgdaemon pagedaemon 24011 146312 0 0 3 0x14200 bored crynlk 56898 226640 0 0 3 0x14200 bored crypto 26717 433196 0 0 3 0x40014200 acpi0 acpi0 15030 490964 0 0 3 0x40014200 idle1 79539 247152 0 0 3 0x14200 bored softnet 97364 479578 0 0 3 0x14200 bored systqmp 81465 413260 0 0 3 0x14200 bored systq 33970 57489 0 0 3 0x40014200 bored softclock 7004 330744 0 0 3 0x40014200 idle0 1 147259 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 41971 (syz-executor.0) thread 0xffff8000241093e8 (422232) exclusive rwlock netlock r = 0 (0xffffffff82730a80) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 tun_dev_write+0x1f9 sys/net/if_tun.c:867 #2 spec_write+0xd4 sys/kern/spec_vnops.c:309 #3 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 #4 vn_write+0x14e sys/kern/vfs_vnops.c:414 #5 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #6 sys_write+0x83 sys/kern/sys_generic.c:285 #7 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8287f080) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #3 sys_write+0x83 sys/kern/sys_generic.c:285 #4 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9503 6409K 7314K 78643K 16341 0 pcb 13 8K 8K 78643K 550 0 rtable 98 6K 10K 78643K 593 0 ifaddr 64 13K 14K 78643K 194 0 counters 43 33K 34K 78643K 83 0 ioctlops 0 0K 4K 78643K 1646 0 iov 0 0K 16K 78643K 137 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 2663 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 29 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 995 0 dirhash 6 1K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 3846 0 sigio 0 0K 0K 78643K 146 0 proc 61 63K 83K 78643K 555 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 96 0 in_multi 26 1K 2K 78643K 129 0 ether_multi 1 0K 0K 78643K 13 0 mrt 0 0K 0K 78643K 13 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 2K 78643K 439 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 197 63K 79K 78643K 12360 0 UVM aobj 60 4K 4K 78643K 68 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 76 0 NDP 10 0K 0K 78643K 40 0 temp 125 3968K 4032K 78643K 12641 0 kqueue 3 4K 8K 78643K 20 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 8 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 53 0 51 1 0 1 1 0 8 0 rtentry 112 81 0 49 2 0 2 2 0 8 0 unpcb 120 9200 0 9184 9 8 1 2 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpcb 592 990 0 986 9 8 1 5 0 8 0 inpcb 296 4256 0 4249 14 13 1 2 0 8 0 rttmr 72 5 0 5 3 2 1 1 0 8 1 nd6 48 22 0 16 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 3 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 4 0 4 2 2 0 1 0 8 0 pffrag 232 4 0 4 4 4 0 1 0 482 0 pffrnode 88 4 0 4 4 4 0 1 0 8 0 pffrent 40 6 0 6 4 4 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 pfrktable 1344 62 0 57 3 1 2 2 0 8 1 pfstitem 24 12 0 10 1 0 1 1 0 8 0 pfstkey 112 18 0 16 1 0 1 1 0 8 0 pfstate 328 16 0 14 2 1 1 2 0 8 0 pfrule 1360 41 0 30 7 5 2 2 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 407 0 240 16 5 11 14 0 8 0 art_table 32 408 0 240 2 0 2 2 0 8 0 art_node 16 79 0 52 1 0 1 1 0 8 0 sysvmsgpl 40 25 0 12 1 0 1 1 0 8 0 semapl 112 993 0 983 1 0 1 1 0 8 0 shmpl 112 65 0 8 2 0 2 2 0 8 0 dirhash 1024 17 0 13 3 1 2 3 0 8 0 dino2pl 256 6381 0 4979 89 1 88 89 0 8 0 ffsino 272 6381 0 4979 94 0 94 94 0 8 0 nchpl 144 12485 0 10890 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 31034 0 31034 4 3 1 1 0 8 1 percpumem 16 52 0 20 1 0 1 1 0 8 0 vcpupl 1984 10 0 0 2 0 2 2 0 8 0 vmpool 560 14 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 20 0 16 1 0 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 32477 0 32477 20 17 3 7 0 8 3 plimitpl 152 63 0 55 1 0 1 1 0 8 0 sigapl 424 4081 0 4027 7 0 7 7 0 8 1 futexpl 56 45241 0 45239 4 3 1 1 0 8 0 knotepl 112 96 0 76 1 0 1 1 0 8 0 kqueuepl 152 86 0 83 1 0 1 1 0 8 0 pipepl 304 396 0 385 13 11 2 2 0 8 1 fdescpl 496 4044 0 4027 3 0 3 3 0 8 0 filepl 152 24865 0 24755 13 8 5 6 0 8 0 lockfpl 104 1302 0 1301 1 0 1 1 0 8 0 lockfspl 48 580 0 579 1 0 1 1 0 8 0 sessionpl 120 20 0 9 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 2146 0 2137 1 0 1 1 0 8 0 zombiepl 144 4027 0 4027 1 0 1 1 0 8 1 processpl 1008 4081 0 4027 7 0 7 7 0 8 0 procpl 632 11245 0 11180 6 0 6 6 0 8 0 sosppl 144 13 0 13 3 2 1 1 0 8 1 sockpl 400 13520 0 13495 39 35 4 6 0 8 1 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 14 0 0 2 0 2 2 0 8 0 mcl9k 9216 15 0 0 2 0 2 2 0 8 0 mcl8k 8192 16 0 0 2 0 2 2 0 8 0 mcl4k 4096 28 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 218 0 0 20 3 17 20 0 8 0 mtagpl 96 207 0 0 5 0 5 5 0 8 0 mbufpl 256 1264 0 0 65 0 65 65 0 8 0 bufpl 280 8224 0 1966 448 0 448 448 0 8 0 anonpl 16 348445 0 327169 156 70 86 86 0 124 0 amapchunkpl 152 21094 0 20781 42 16 26 26 0 158 13 amappl16 192 14727 0 13663 103 49 54 54 0 8 0 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 27 0 19 1 0 1 1 0 8 0 amappl13 168 3657 0 3652 1 0 1 1 0 8 0 amappl12 160 11 0 6 1 0 1 1 0 8 0 amappl11 152 60 0 45 1 0 1 1 0 8 0 amappl10 144 13 0 8 1 0 1 1 0 8 0 amappl9 136 364 0 363 1 0 1 1 0 8 0 amappl8 128 237 0 159 3 0 3 3 0 8 0 amappl7 120 268 0 261 1 0 1 1 0 8 0 amappl6 112 133 0 116 1 0 1 1 0 8 0 amappl5 104 505 0 492 1 0 1 1 0 8 0 amappl4 96 3960 0 3929 1 0 1 1 0 8 0 amappl3 88 4661 0 4649 1 0 1 1 0 8 0 amappl2 80 27860 0 27782 3 1 2 3 0 8 0 amappl1 72 130190 0 129687 25 15 10 19 0 8 0 amappl 80 11542 0 11452 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 67 0 8 1 0 1 1 0 8 0 uaddrrnd 24 4058 0 4031 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4058 0 4031 1 0 1 1 0 8 0 vmmpekpl 168 32816 0 32777 2 0 2 2 0 8 0 vmmpepl 168 521769 0 519273 214 105 109 120 0 357 0 vmsppl 368 4057 0 4031 3 0 3 3 0 8 0 pdppl 4096 8123 0 8072 7 0 7 7 0 8 0 pvpl 32 1060589 0 1035738 365 164 201 203 0 265 0 pmappl 232 4057 0 4031 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 359 0 56 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800023fd7830,138,0,ffff800023fd79f4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800023fd7830,138,0,ffff800023fd79f4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff80000007e000,ffff800023fd7ad8,fffffd806544e200) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800023fd7bd8,0,ffff800000ac1fd8,0,ffffffff828840d8,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000adc000,ffff800023fd7ea8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800023fd7ea8,ffff800023fd7eb4,29,0,ffff800000adc000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000adc000,fffffd806544e200) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff800023fd8198,ffff800020eef000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800023fd7ff0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e7da688,ffff800023fd8198,11,fffffd807f7bf960) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806755f3a8,ffff800023fd8198,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000241093e8,f0,ffff800023fd8198,0,ffff800023fd8280) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000241093e8,ffff800023fd8230,ffff800023fd8280) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800023fd8300) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023fd8300) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9e3ad83a6b0, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d80ff0) 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 end of kernel end trace frame: 0x7f7ffffe0130, count: -3