uvm_fault(0xffffffff827d0da8, 0xffffffff82715988, 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(0xffffffff827d0da8, 0xffffffff82715988, 0, 2) -> e m_copyback(ffff800021fe05c0,70,0,ffff800021fe0784,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021fe05c0,70,0,ffff800021fe0784,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800021fe0840, count: 0 ddb{0}> trace m_copyback(ffff800021fe05c0,70,0,ffff800021fe0784,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021fe05c0,70,0,ffff800021fe0784,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044880,ffff800021fe0868,fffffd806a1b9800) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800021fe0968,0,ffff800000ac0fe8,0,ffffffff82894018,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b43000,ffff800021fe0c38) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800021fe0c38,ffff800021fe0c44,29,0,ffff800000b43000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b43000,fffffd806a1b9800) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff800021fe0f28,ffff80002330b000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800021fe0d80) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8070a974e8,ffff800021fe0f28,11,fffffd807f7bf780) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806caa1270,ffff800021fe0f28,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800021fba520,f0,ffff800021fe0f28,0,ffff800021fe1010) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800021fba520,ffff800021fe0fc0,ffff800021fe1010) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800021fe1090) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021fe1090) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7cfab4f3990, count: -14 ddb{0}> show registers rdi 0 rsi 0x7cbff acpi_pdirpa+0x68a67 rbp 0xffff800021fe05a0 rbx 0xffffffffffff99f0 rdx 0x7cbfe acpi_pdirpa+0x68a66 rcx 0xffffffff82748a00 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81fce2a8 pf_translate_a+0x1a8 r10 0x1 r11 0xa8d1ff0de8c61c2c r12 0xfffffd80684c3000 r13 0x40 r14 0x30 r15 0xffff800021fe07a0 rip 0xffffffff81eafae9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021fe04e0 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=106225 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021fba2a8,0xffff800021fbb8f0 process=0xffff8000ffffd3b0 user=0xffff800021fdc000, vmspace=0xfffffd807c0c1d08 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 9921 297380 55535 0 2 0 syz-executor.1 9921 209500 55535 0 3 0x4000080 fsleep syz-executor.1 * 9921 106225 55535 0 7 0x4000000 syz-executor.1 9921 33091 55535 0 3 0x4000080 fsleep syz-executor.1 87991 243426 1 0 3 0x100083 ttyin getty 85254 406481 0 0 3 0x14200 acct acct 94069 425542 0 0 3 0x14280 nfsidl nfsio 49399 484950 0 0 3 0x14280 nfsidl nfsio 46849 76577 0 0 3 0x14280 nfsidl nfsio 21986 259921 0 0 3 0x14280 nfsidl nfsio 88652 94053 0 0 3 0x14280 nfsidl nfsio 19281 374812 0 0 3 0x14280 nfsidl nfsio 88848 514578 0 0 3 0x14280 nfsidl nfsio 22323 111170 0 0 3 0x14280 nfsidl nfsio 14574 521121 0 0 3 0x14280 nfsidl nfsio 89420 453158 0 0 3 0x14280 nfsidl nfsio 59965 306418 0 0 3 0x14280 nfsidl nfsio 75876 478467 0 0 3 0x14280 nfsidl nfsio 498 442625 0 0 3 0x14280 nfsidl nfsio 7491 190821 0 0 3 0x14280 nfsidl nfsio 57640 421750 0 0 3 0x14280 nfsidl nfsio 96986 127519 0 0 3 0x14280 nfsidl nfsio 71238 388015 0 0 3 0x14280 nfsidl nfsio 76710 415828 0 0 3 0x14280 nfsidl nfsio 37440 350431 0 0 3 0x14280 nfsidl nfsio 90899 322674 0 0 3 0x14280 nfsidl nfsio 55535 267322 41107 0 3 0x82 nanosleep syz-executor.1 68367 514583 0 0 3 0x14200 bored sosplice 43220 275763 41107 0 3 0x82 piperd syz-executor.0 41107 7448 45539 0 3 0x82 thrsleep syz-fuzzer 41107 430076 45539 0 3 0x4000082 nanosleep syz-fuzzer 41107 199087 45539 0 2 0x4000002 syz-fuzzer 41107 222321 45539 0 2 0x4000002 syz-fuzzer 41107 280417 45539 0 3 0x4000082 thrsleep syz-fuzzer 41107 514244 45539 0 3 0x4000082 thrsleep syz-fuzzer 41107 126643 45539 0 7 0x4000002 syz-fuzzer 41107 151992 45539 0 3 0x4000082 thrsleep syz-fuzzer 45539 349032 98789 0 3 0x10008a pause ksh 98789 373220 29654 0 3 0x92 select sshd 29654 281219 1 0 3 0x80 select sshd 86450 370060 19666 74 3 0x100092 bpf pflogd 19666 273206 1 0 3 0x80 netio pflogd 95281 23414 54545 73 3 0x100090 kqread syslogd 54545 401560 1 0 3 0x100082 netio syslogd 65269 249814 1 77 3 0x100090 poll dhclient 97635 471831 1 0 3 0x80 poll dhclient 91321 246108 0 0 3 0x14200 bored smr 55157 66997 0 0 2 0x14200 zerothread 6781 390205 0 0 3 0x14200 aiodoned aiodoned 26531 322494 0 0 3 0x14200 syncer update 94769 289248 0 0 3 0x14200 cleaner cleaner 1656 20917 0 0 3 0x14200 reaper reaper 84606 212765 0 0 3 0x14200 pgdaemon pagedaemon 15529 479380 0 0 3 0x14200 bored crynlk 15284 312606 0 0 3 0x14200 bored crypto 699 16249 0 0 3 0x40014200 acpi0 acpi0 96524 94509 0 0 3 0x40014200 idle1 46386 44380 0 0 3 0x14200 bored softnet 86771 371694 0 0 3 0x14200 bored systqmp 43843 124678 0 0 3 0x14200 bored systq 69984 180796 0 0 3 0x40014200 bored softclock 50953 470039 0 0 3 0x40014200 idle0 1 90899 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 9921 (syz-executor.1) thread 0xffff800021fba520 (106225) exclusive rwlock netlock r = 0 (0xffffffff8275a5c0) #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 (0xffffffff82885e68) #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 9541 6432K 6990K 78643K 12263 0 pcb 13 8K 8K 78643K 209 0 rtable 70 6K 10K 78643K 753 0 ifaddr 81 14K 16K 78643K 227 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 75 0 ioctlops 0 0K 4K 78643K 1773 0 iov 0 0K 32K 78643K 122 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1799 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 27 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 470 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 1502 0 sigio 0 0K 0K 78643K 23 0 proc 63 63K 95K 78643K 593 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 110 0 in_multi 4 0K 2K 78643K 158 0 ether_multi 1 0K 0K 78643K 25 0 mrt 0 0K 0K 78643K 8 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 2K 78643K 469 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 181 254K 254K 78643K 5622 0 UVM aobj 57 7K 7K 78643K 63 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 2 0K 0K 78643K 1379 0 NDP 15 0K 0K 78643K 46 0 temp 161 3989K 4053K 78643K 14344 0 kqueue 3 4K 10K 78643K 53 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 6 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 61 0 59 1 0 1 1 0 8 0 rtentry 112 109 0 92 2 0 2 2 0 8 0 unpcb 120 688 0 677 2 1 1 2 0 8 0 syncache 272 11 0 11 5 5 0 1 0 8 0 tcpqe 32 10 0 10 2 2 0 1 0 8 0 tcpcb 592 2084 0 2076 10 8 2 4 0 8 1 inpcb 296 4300 0 4290 3 1 2 2 0 8 1 rttmr 72 4 0 4 2 2 0 1 0 8 0 nd6 48 28 0 28 1 1 0 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 6 0 6 1 1 0 1 0 482 0 pffrnode 88 6 0 6 1 1 0 1 0 8 0 pffrent 40 148 0 148 2 2 0 1 0 8 0 pfosfp 40 848 0 423 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 121 0 113 5 4 1 2 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 18 0 16 1 0 1 1 0 8 0 pfstkey 112 20 0 18 1 0 1 1 0 8 0 pfstate 328 18 0 16 2 1 1 2 0 8 0 pfrule 1360 71 0 50 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 469 0 444 14 9 5 13 0 8 0 art_table 32 470 0 444 2 0 2 2 0 8 0 art_node 16 106 0 93 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 466 0 456 1 0 1 1 0 8 0 shmpl 112 60 0 6 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3374 0 1969 90 1 89 89 0 8 0 ffsino 272 3374 0 1969 94 0 94 94 0 8 0 nchpl 144 5637 0 4054 60 0 60 60 0 8 0 uvmvnodes 72 3841 0 0 70 0 70 70 0 8 0 vnodes 208 3841 0 0 203 0 203 203 0 8 0 namei 1024 15563 0 15563 2 1 1 1 0 8 1 percpumem 16 48 0 16 1 0 1 1 0 8 0 vcpupl 1984 22 0 0 3 0 3 3 0 8 0 vmpool 560 30 0 8 3 1 2 2 0 8 0 pfiaddrpl 120 42 0 36 1 0 1 1 0 8 0 scxspl 200 16257 0 16257 14 11 3 7 0 8 3 plimitpl 152 133 0 125 1 0 1 1 0 8 0 sigapl 424 1739 0 1686 7 1 6 7 0 8 0 futexpl 56 26681 0 26679 2 1 1 1 0 8 0 knotepl 112 144 0 124 1 0 1 1 0 8 0 kqueuepl 152 203 0 196 1 0 1 1 0 8 0 pipepl 304 253 0 242 6 4 2 2 0 8 1 fdescpl 496 1700 0 1684 3 0 3 3 0 8 0 filepl 152 11131 0 11026 11 6 5 6 0 8 0 lockfpl 104 365 0 364 1 0 1 1 0 8 0 lockfspl 48 135 0 134 1 0 1 1 0 8 0 sessionpl 120 20 0 9 1 0 1 1 0 8 0 pgrppl 48 40 0 29 1 0 1 1 0 8 0 ucredpl 96 898 0 889 1 0 1 1 0 8 0 zombiepl 144 1686 0 1686 3 2 1 1 0 8 1 processpl 1008 1739 0 1686 7 0 7 7 0 8 0 procpl 632 4993 0 4930 7 1 6 6 0 8 0 sosppl 144 26 0 26 8 7 1 1 0 8 1 sockpl 400 5060 0 5037 12 9 3 6 0 8 0 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 187 0 0 23 1 22 23 0 8 0 mtagpl 96 90 0 0 3 0 3 3 0 8 0 mbufpl 256 448 0 0 24 0 24 24 0 8 0 bufpl 280 5839 0 190 404 0 404 404 0 8 0 anonpl 16 168414 0 149608 101 24 77 89 0 124 0 amapchunkpl 152 9577 0 9252 17 3 14 17 0 158 0 amappl16 192 6324 0 5438 68 23 45 56 0 8 0 amappl15 184 10 0 7 1 0 1 1 0 8 0 amappl14 176 26 0 19 1 0 1 1 0 8 0 amappl13 168 709 0 705 1 0 1 1 0 8 0 amappl12 160 608 0 603 1 0 1 1 0 8 0 amappl11 152 58 0 43 1 0 1 1 0 8 0 amappl10 144 214 0 210 1 0 1 1 0 8 0 amappl9 136 369 0 369 1 1 0 1 0 8 0 amappl8 128 167 0 124 2 0 2 2 0 8 0 amappl7 120 462 0 454 1 0 1 1 0 8 0 amappl6 112 134 0 117 1 0 1 1 0 8 0 amappl5 104 1780 0 1765 1 0 1 1 0 8 0 amappl4 96 988 0 955 1 0 1 1 0 8 0 amappl3 88 127 0 120 1 0 1 1 0 8 0 amappl2 80 11918 0 11843 3 1 2 3 0 8 0 amappl1 72 63556 0 63069 24 14 10 19 0 8 0 amappl 80 5288 0 5193 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 62 0 6 1 0 1 1 0 8 0 uaddrrnd 24 1730 0 1692 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1730 0 1692 1 0 1 1 0 8 0 vmmpekpl 168 16132 0 16082 3 0 3 3 0 8 0 vmmpepl 168 227425 0 225231 155 56 99 126 0 357 0 vmsppl 368 1729 0 1692 4 0 4 4 0 8 0 pdppl 4096 3467 0 3406 9 1 8 8 0 8 0 pvpl 32 523572 0 501733 249 66 183 212 0 265 3 pmappl 232 1729 0 1692 3 0 3 3 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 293 0 31 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800021fe05c0,70,0,ffff800021fe0784,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021fe05c0,70,0,ffff800021fe0784,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044880,ffff800021fe0868,fffffd806a1b9800) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800021fe0968,0,ffff800000ac0fe8,0,ffffffff82894018,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b43000,ffff800021fe0c38) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800021fe0c38,ffff800021fe0c44,29,0,ffff800000b43000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b43000,fffffd806a1b9800) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff800021fe0f28,ffff80002330b000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800021fe0d80) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8070a974e8,ffff800021fe0f28,11,fffffd807f7bf780) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806caa1270,ffff800021fe0f28,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800021fba520,f0,ffff800021fe0f28,0,ffff800021fe1010) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800021fba520,ffff800021fe0fc0,ffff800021fe1010) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800021fe1090) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021fe1090) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7cfab4f3990, 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 __mp_lock(ffffffff82885c60) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82885c60) at __mp_lock+0x133 sys/kern/kern_lock.c:147 syscall(ffff800020ea8a60) at syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800020ea8a60) at syscall+0x3fd sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc0001bde78, count: -6