uvm_fault(0xffffffff8277aa10, 0xffffffff82689510, 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(0xffffffff8277aa10, 0xffffffff82689510, 0, 2) -> e m_copyback(ffff8000227071a0,158,0,ffff800022707364,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000227071a0,158,0,ffff800022707364,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800022707420, count: 0 ddb{0}> trace m_copyback(ffff8000227071a0,158,0,ffff800022707364,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000227071a0,158,0,ffff800022707364,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a00,ffff800022707448,fffffd806f0e2d00) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800022707548,0,ffff800000abf558,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b46000,ffff800022707818) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800022707818,ffff800022707824,29,0,ffff800000b46000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b46000,fffffd806f0e2d00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff800022707b08,ffff800022b09000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800022707960) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806ed474e8,ffff800022707b08,11,fffffd807f7bf840) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8066ddcd30,ffff800022707b08,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800021efa058,f0,ffff800022707b08,0,ffff800022707bf0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800021efa058,ffff800022707ba0,ffff800022707bf0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800022707c70) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022707c70) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x114442e4fb0, count: -14 ddb{0}> show registers rdi 0 rsi 0x6c985 acpi_pdirpa+0x587ed rbp 0xffff800022707180 rbx 0xffffffffffffaf59 rdx 0x6c984 acpi_pdirpa+0x587ec rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0xbf537d58bbf39bb7 r12 0xfffffd8071bbc400 r13 0x128 r14 0x30 r15 0xffff800022707380 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000227070c0 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=74965 stat=onproc flags process=0 proc=4000000 pri=78, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff800021efa7c0,0xffffffff82888178 process=0xffff800021efc3f0 user=0xffff800022702000, vmspace=0xfffffd806689a5d0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 23882 53379 51805 0 7 0 syz-executor.1 *23882 74965 51805 0 7 0x4000000 syz-executor.1 23488 188362 41794 0 3 0x80 nanosleep syz-executor.0 23488 66189 41794 0 3 0x4000080 netcon syz-executor.0 23488 218935 41794 0 3 0x4000080 fsleep syz-executor.0 2386 504953 0 0 3 0x14280 nfsidl nfsio 17450 518107 0 0 3 0x14280 nfsidl nfsio 58834 377710 0 0 3 0x14280 nfsidl nfsio 64002 17738 0 0 3 0x14280 nfsidl nfsio 53396 1233 0 0 3 0x14280 nfsidl nfsio 40624 67779 0 0 3 0x14280 nfsidl nfsio 37168 35755 0 0 3 0x14280 nfsidl nfsio 36521 206214 0 0 3 0x14280 nfsidl nfsio 74640 80054 0 0 3 0x14280 nfsidl nfsio 71201 158243 0 0 3 0x14280 nfsidl nfsio 80185 427642 0 0 3 0x14280 nfsidl nfsio 27163 255391 0 0 3 0x14280 nfsidl nfsio 35510 232862 0 0 3 0x14280 nfsidl nfsio 83463 44877 0 0 3 0x14280 nfsidl nfsio 83299 333325 0 0 3 0x14280 nfsidl nfsio 16029 279254 0 0 3 0x14280 nfsidl nfsio 89510 155894 0 0 3 0x14280 nfsidl nfsio 60309 434756 0 0 3 0x14280 nfsidl nfsio 80551 352489 0 0 3 0x14280 nfsidl nfsio 21256 176319 0 0 3 0x14280 nfsidl nfsio 51805 149849 88557 0 3 0x82 nanosleep syz-executor.1 41794 356923 88557 0 3 0x82 nanosleep syz-executor.0 39516 146266 0 0 3 0x14200 bored sosplice 88557 279983 77863 0 3 0x82 nanosleep syz-fuzzer 88557 394873 77863 0 3 0x4000082 nanosleep syz-fuzzer 88557 197248 77863 0 3 0x4000082 thrsleep syz-fuzzer 88557 126028 77863 0 3 0x4000082 thrsleep syz-fuzzer 88557 322566 77863 0 3 0x4000082 thrsleep syz-fuzzer 88557 204748 77863 0 3 0x4000082 thrsleep syz-fuzzer 88557 10640 77863 0 3 0x4000082 thrsleep syz-fuzzer 88557 316672 77863 0 3 0x4000082 kqread syz-fuzzer 77863 334632 97935 0 3 0x10008a pause ksh 97935 466341 98451 0 3 0x92 select sshd 85580 220989 1 0 3 0x100083 ttyin getty 98451 187803 1 0 3 0x80 select sshd 78013 165227 86917 74 3 0x100092 bpf pflogd 86917 260260 1 0 3 0x80 netio pflogd 24227 302085 39531 73 3 0x100090 kqread syslogd 39531 155595 1 0 3 0x100082 netio syslogd 24850 452384 1 77 3 0x100090 poll dhclient 17564 468327 1 0 3 0x80 poll dhclient 69441 204819 0 0 3 0x14200 bored smr 29504 265542 0 0 2 0x14200 zerothread 79460 296510 0 0 3 0x14200 aiodoned aiodoned 70288 487580 0 0 3 0x14200 syncer update 88292 333558 0 0 3 0x14200 cleaner cleaner 54923 103046 0 0 3 0x14200 reaper reaper 37332 488211 0 0 3 0x14200 pgdaemon pagedaemon 46437 450932 0 0 3 0x14200 bored crynlk 11394 24951 0 0 3 0x14200 bored crypto 13042 250130 0 0 3 0x40014200 acpi0 acpi0 99937 6272 0 0 3 0x40014200 idle1 35071 466256 0 0 3 0x14200 bored softnet 54529 318738 0 0 3 0x14200 bored systqmp 2678 389878 0 0 3 0x14200 bored systq 7499 35168 0 0 3 0x40014200 bored softclock 67515 394013 0 0 3 0x40014200 idle0 1 44743 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 23882 (syz-executor.1) thread 0xffff800021efa058 (74965) exclusive rwlock netlock r = 0 (0xffffffff827435e0) #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 (0xffffffff8289f9d8) #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 9516 6422K 6928K 78643K 11793 0 pcb 13 8K 8K 78643K 120 0 rtable 106 4K 7K 78643K 607 0 ifaddr 69 13K 14K 78643K 184 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 73 0 ioctlops 0 0K 4K 78643K 1613 0 iov 0 0K 16K 78643K 73 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1618 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 20 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 207 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 870 0 sigio 0 0K 0K 78643K 8 0 proc 61 63K 95K 78643K 594 0 subproc 32 2K 2K 78643K 85 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 81 0 in_multi 29 1K 2K 78643K 167 0 ether_multi 1 0K 0K 78643K 11 0 mrt 0 0K 0K 78643K 14 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 2K 78643K 477 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 184 110K 110K 78643K 4127 0 UVM aobj 63 7K 7K 78643K 69 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 102 0 NDP 12 0K 0K 78643K 48 0 temp 133 3968K 4045K 78643K 6045 0 kqueue 3 4K 12K 78643K 22 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 15 0 9 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 56 0 54 1 0 1 1 0 8 0 rtentry 112 132 0 91 2 0 2 2 0 8 0 unpcb 120 359 0 349 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 44 0 44 1 1 0 1 0 8 0 tcpcb 592 1272 0 1254 4 2 2 3 0 8 0 inpcb 296 1804 0 1795 5 3 2 2 0 8 0 rttmr 72 6 0 6 3 3 0 1 0 8 0 nd6 48 33 0 28 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 6 0 6 2 2 0 1 0 482 0 pffrnode 88 6 0 6 2 2 0 1 0 8 0 pffrent 40 98 0 98 2 2 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 35 0 33 3 2 1 1 0 8 0 pfstitem 24 50 0 48 1 0 1 1 0 8 0 pfstkey 112 52 0 50 1 0 1 1 0 8 0 pfstate 328 50 0 48 3 2 1 3 0 8 0 pfrule 1360 35 0 31 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 587 0 398 19 7 12 14 0 8 0 art_table 32 588 0 398 2 0 2 2 0 8 0 art_node 16 131 0 94 1 0 1 1 0 8 0 sysvmsgpl 40 56 0 16 1 0 1 1 0 8 0 semapl 112 205 0 195 1 0 1 1 0 8 0 shmpl 112 66 0 6 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2456 0 1056 89 0 89 89 0 8 0 ffsino 272 2456 0 1056 94 0 94 94 0 8 0 nchpl 144 3807 0 2216 60 0 60 60 0 8 0 uvmvnodes 72 2814 0 0 52 0 52 52 0 8 0 vnodes 208 2814 0 0 149 0 149 149 0 8 0 namei 1024 10490 0 10490 4 3 1 1 0 8 1 percpumem 16 47 0 15 1 0 1 1 0 8 0 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 560 11 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 12 0 10 3 2 1 1 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 200 11559 0 11559 18 15 3 7 0 8 3 plimitpl 152 50 0 42 1 0 1 1 0 8 0 sigapl 424 1099 0 1046 6 0 6 6 0 8 0 futexpl 56 11176 0 11175 2 1 1 1 0 8 0 knotepl 112 128 0 108 1 0 1 1 0 8 0 kqueuepl 152 87 0 85 1 0 1 1 0 8 0 pipepl 304 200 0 189 12 10 2 2 0 8 1 fdescpl 496 1061 0 1044 3 0 3 3 0 8 0 filepl 152 6655 0 6550 5 0 5 5 0 8 0 lockfpl 104 227 0 226 1 0 1 1 0 8 0 lockfspl 48 76 0 75 1 0 1 1 0 8 0 sessionpl 120 21 0 10 1 0 1 1 0 8 0 pgrppl 48 29 0 18 1 0 1 1 0 8 0 ucredpl 96 398 0 389 1 0 1 1 0 8 0 zombiepl 144 1046 0 1046 2 1 1 1 0 8 1 processpl 1008 1099 0 1046 7 0 7 7 0 8 0 procpl 632 3437 0 3374 12 6 6 6 0 8 0 sosppl 144 15 0 15 5 4 1 1 0 8 1 sockpl 400 2229 0 2208 11 7 4 4 0 8 1 mcl64k 65536 324 0 0 40 6 34 34 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 13 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 182 0 0 21 0 21 21 0 8 0 mtagpl 96 39 0 0 1 0 1 1 0 8 0 mbufpl 256 600 0 0 30 1 29 29 0 8 0 bufpl 280 5246 0 200 361 0 361 361 0 8 0 anonpl 16 148495 0 129897 131 40 91 91 0 124 16 amapchunkpl 152 8289 0 7988 41 15 26 26 0 158 13 amappl16 192 4851 0 3982 89 38 51 55 0 8 7 amappl15 184 287 0 286 1 0 1 1 0 8 0 amappl14 176 26 0 18 1 0 1 1 0 8 0 amappl13 168 51 0 50 1 0 1 1 0 8 0 amappl12 160 188 0 181 1 0 1 1 0 8 0 amappl11 152 70 0 54 1 0 1 1 0 8 0 amappl10 144 248 0 242 1 0 1 1 0 8 0 amappl9 136 400 0 400 1 1 0 1 0 8 0 amappl8 128 275 0 201 3 0 3 3 0 8 0 amappl7 120 533 0 524 1 0 1 1 0 8 0 amappl6 112 142 0 124 1 0 1 1 0 8 0 amappl5 104 1305 0 1290 1 0 1 1 0 8 0 amappl4 96 331 0 304 1 0 1 1 0 8 0 amappl3 88 100 0 92 1 0 1 1 0 8 0 amappl2 80 6974 0 6895 3 1 2 3 0 8 0 amappl1 72 46848 0 46356 25 15 10 19 0 8 0 amappl 80 3765 0 3671 3 0 3 3 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 68 0 6 1 0 1 1 0 8 0 uaddrrnd 24 1072 0 1048 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1072 0 1048 1 0 1 1 0 8 0 vmmpekpl 168 12942 0 12898 3 0 3 3 0 8 0 vmmpepl 168 149998 0 147725 203 93 110 133 0 357 9 vmsppl 368 1071 0 1048 3 0 3 3 0 8 0 pdppl 4096 2151 0 2103 7 0 7 7 0 8 0 pvpl 32 418910 0 396865 300 85 215 215 0 265 36 pmappl 232 1071 0 1048 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 331 0 28 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff8000227071a0,158,0,ffff800022707364,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000227071a0,158,0,ffff800022707364,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a00,ffff800022707448,fffffd806f0e2d00) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800022707548,0,ffff800000abf558,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b46000,ffff800022707818) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800022707818,ffff800022707824,29,0,ffff800000b46000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b46000,fffffd806f0e2d00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff800022707b08,ffff800022b09000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800022707960) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806ed474e8,ffff800022707b08,11,fffffd807f7bf840) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8066ddcd30,ffff800022707b08,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800021efa058,f0,ffff800022707b08,0,ffff800022707bf0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800021efa058,ffff800022707ba0,ffff800022707bf0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800022707c70) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022707c70) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x114442e4fb0, 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: 0x7f7ffffea4f0, count: -3