uvm_fault(0xffffffff8277aa10, 0xffffffff82679400, 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, 0xffffffff82679400, 0, 2) -> e m_copyback(ffff800024fc1450,158,0,ffff800024fc1614,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800024fc1450,158,0,ffff800024fc1614,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800024fc16d0, count: 0 ddb{0}> trace m_copyback(ffff800024fc1450,158,0,ffff800024fc1614,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800024fc1450,158,0,ffff800024fc1614,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff8000000448c0,ffff800024fc16f8,fffffd80789eda00) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800024fc17f8,0,ffff800000b66560,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b5f800,ffff800024fc1ac8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800024fc1ac8,ffff800024fc1ad4,29,0,ffff800000b5f800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b5f800,fffffd80789eda00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff800024fc1db8,ffff8000214e7000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800024fc1c10) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8067f9ceb0,ffff800024fc1db8,11,fffffd807f7bf8a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca74e50,ffff800024fc1db8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800023faf170,f0,ffff800024fc1db8,0,ffff800024fc1ea0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800023faf170,ffff800024fc1e50,ffff800024fc1ea0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800024fc1f20) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024fc1f20) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2c3e49f1e40, count: -14 ddb{0}> show registers rdi 0 rsi 0x7e2d5 acpi_pdirpa+0x6a13d rbp 0xffff800024fc1430 rbx 0xffffffffffff8f37 rdx 0x7e2d4 acpi_pdirpa+0x6a13c rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0x9a45458013bdd9ed r12 0xfffffd80789e7600 r13 0x128 r14 0x30 r15 0xffff800024fc1630 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800024fc1370 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=457081 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800023fae028,0xffffffff82888178 process=0xffff800023f94fc0 user=0xffff800024fbc000, vmspace=0xfffffd807d658750 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 4029 287581 15085 0 7 0 syz-executor.1 * 4029 457081 15085 0 7 0x4000000 syz-executor.1 15085 19948 89865 0 3 0x82 nanosleep syz-executor.1 92076 377901 1 0 3 0x100083 ttyin getty 34577 69042 0 0 3 0x14280 nfsidl nfsio 66704 29154 0 0 3 0x14280 nfsidl nfsio 78337 462409 0 0 3 0x14280 nfsidl nfsio 54192 95139 0 0 3 0x14280 nfsidl nfsio 99179 225055 0 0 3 0x14280 nfsidl nfsio 43829 157580 0 0 3 0x14280 nfsidl nfsio 29546 427366 0 0 3 0x14280 nfsidl nfsio 45068 386564 0 0 3 0x14280 nfsidl nfsio 82744 319883 0 0 3 0x14280 nfsidl nfsio 87416 244089 0 0 3 0x14280 nfsidl nfsio 60967 190930 0 0 3 0x14280 nfsidl nfsio 21448 333959 0 0 3 0x14280 nfsidl nfsio 32442 398185 0 0 3 0x14280 nfsidl nfsio 22356 62132 0 0 3 0x14280 nfsidl nfsio 42900 128189 0 0 3 0x14280 nfsidl nfsio 86663 409187 0 0 3 0x14280 nfsidl nfsio 76884 142106 0 0 3 0x14280 nfsidl nfsio 72768 56003 0 0 3 0x14280 nfsidl nfsio 1039 435426 0 0 3 0x14280 nfsidl nfsio 66196 141690 0 0 3 0x14280 nfsidl nfsio 69550 244177 89865 0 3 0x82 piperd syz-executor.0 19873 421108 0 0 3 0x14200 bored sosplice 89865 302397 94359 0 3 0x82 thrsleep syz-fuzzer 89865 422673 94359 0 3 0x4000082 nanosleep syz-fuzzer 89865 275807 94359 0 2 0x4000002 syz-fuzzer 89865 170781 94359 0 3 0x4000082 thrsleep syz-fuzzer 89865 24141 94359 0 3 0x4000082 thrsleep syz-fuzzer 89865 112077 94359 0 3 0x4000082 thrsleep syz-fuzzer 89865 29749 94359 0 3 0x4000082 thrsleep syz-fuzzer 89865 230421 94359 0 3 0x4000082 kqread syz-fuzzer 94359 27142 86556 0 3 0x10008a pause ksh 86556 293428 40197 0 3 0x92 select sshd 40197 55845 1 0 3 0x80 select sshd 10292 16720 5458 74 3 0x100092 bpf pflogd 5458 167751 1 0 3 0x80 netio pflogd 33725 192318 8843 73 3 0x100090 kqread syslogd 8843 307612 1 0 3 0x100082 netio syslogd 25275 138678 1 77 3 0x100090 poll dhclient 90893 228546 1 0 3 0x80 poll dhclient 66025 262304 0 0 3 0x14200 bored smr 29719 506002 0 0 2 0x14200 zerothread 23640 16796 0 0 3 0x14200 aiodoned aiodoned 19347 103371 0 0 3 0x14200 syncer update 51625 285272 0 0 3 0x14200 cleaner cleaner 32091 154878 0 0 3 0x14200 reaper reaper 90534 34050 0 0 3 0x14200 pgdaemon pagedaemon 20905 130447 0 0 3 0x14200 bored crynlk 31772 482070 0 0 3 0x14200 bored crypto 47235 464966 0 0 3 0x40014200 acpi0 acpi0 43986 396377 0 0 3 0x40014200 idle1 33866 79924 0 0 3 0x14200 bored softnet 87615 104452 0 0 3 0x14200 bored systqmp 73977 95239 0 0 3 0x14200 bored systq 5710 148121 0 0 3 0x40014200 bored softclock 42701 491637 0 0 3 0x40014200 idle0 1 482394 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 4029 (syz-executor.1) thread 0xffff800023faf170 (457081) 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 9535 6441K 7071K 78643K 12875 0 pcb 13 8K 8K 78643K 442 0 rtable 88 4K 8K 78643K 967 0 ifaddr 79 14K 15K 78643K 226 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 73 0 ioctlops 0 0K 4K 78643K 1760 0 iov 0 0K 16K 78643K 105 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 2012 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 22 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 897 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 2114 0 sigio 0 0K 0K 78643K 481 0 proc 62 63K 83K 78643K 831 0 subproc 32 2K 2K 78643K 153 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 370 0 in_multi 26 1K 2K 78643K 434 0 ether_multi 1 0K 0K 78643K 16 0 mrt 0 0K 0K 78643K 3 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 612 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 171 124K 138K 78643K 7040 0 UVM aobj 61 7K 7K 78643K 64 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 126 0 NDP 14 0K 0K 78643K 61 0 temp 139 3962K 4032K 78643K 23478 0 kqueue 3 4K 12K 78643K 40 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 26 0 20 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 90 0 88 1 0 1 1 0 8 0 rtentry 112 219 0 189 2 0 2 2 0 8 0 unpcb 120 1477 0 1465 1 0 1 1 0 8 0 syncache 272 10 0 10 3 3 0 1 0 8 0 tcpqe 32 12 0 12 2 2 0 1 0 8 0 tcpcb 592 470 0 465 5 3 2 2 0 8 1 inpcb 296 2429 0 2421 8 6 2 2 0 8 1 rttmr 72 3 0 3 2 2 0 1 0 8 0 nd6 48 49 0 45 1 0 1 1 0 8 0 pkpcb 40 16 0 16 3 2 1 1 0 8 1 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 4 0 4 3 3 0 1 0 482 0 pffrnode 88 4 0 4 3 3 0 1 0 8 0 pffrent 40 51 0 51 3 3 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 58 0 56 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 25 0 23 1 0 1 1 0 8 0 pfstkey 112 27 0 25 1 0 1 1 0 8 0 pfstate 328 25 0 23 2 1 1 2 0 8 0 pfrule 1360 59 0 44 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1114 0 973 22 12 10 13 0 8 0 art_table 32 1115 0 973 2 0 2 2 0 8 0 art_node 16 218 0 193 1 0 1 1 0 8 0 sysvmsgpl 40 24 0 2 1 0 1 1 0 8 0 semapl 112 893 0 883 1 0 1 1 0 8 0 shmpl 112 61 0 3 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4153 0 2752 89 0 89 89 0 8 0 ffsino 272 4153 0 2752 94 0 94 94 0 8 0 nchpl 144 7259 0 5674 60 0 60 60 0 8 0 uvmvnodes 72 4837 0 0 88 0 88 88 0 8 0 vnodes 208 4837 0 0 255 0 255 255 0 8 0 namei 1024 23731 0 23731 4 3 1 1 0 8 1 percpumem 16 47 0 15 1 0 1 1 0 8 0 vcpupl 1984 12 0 0 2 0 2 2 0 8 0 vmpool 560 15 0 3 1 0 1 1 0 8 0 pfiaddrpl 120 20 0 20 1 0 1 1 0 8 1 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 200 21734 0 21734 12 11 1 7 0 8 1 plimitpl 152 108 0 100 1 0 1 1 0 8 0 sigapl 424 2330 0 2278 6 0 6 6 0 8 0 futexpl 56 32262 0 32262 4 3 1 1 0 8 1 knotepl 112 187 0 167 1 0 1 1 0 8 0 kqueuepl 152 172 0 167 1 0 1 1 0 8 0 pipepl 304 257 0 246 7 5 2 2 0 8 1 fdescpl 496 2294 0 2278 3 0 3 3 0 8 0 filepl 152 14363 0 14261 7 2 5 6 0 8 1 lockfpl 104 419 0 418 1 0 1 1 0 8 0 lockfspl 48 163 0 162 1 0 1 1 0 8 0 sessionpl 120 26 0 15 1 0 1 1 0 8 0 pgrppl 48 44 0 33 1 0 1 1 0 8 0 ucredpl 96 1474 0 1465 1 0 1 1 0 8 0 zombiepl 144 2278 0 2278 1 0 1 1 0 8 1 processpl 1008 2330 0 2278 7 0 7 7 0 8 0 procpl 632 6225 0 6165 6 0 6 6 0 8 0 srpgc 72 1 0 1 1 1 0 1 0 8 0 sosppl 144 14 0 14 5 5 0 1 0 8 0 sockpl 400 4033 0 4011 11 8 3 5 0 8 0 mcl64k 65536 261 0 0 33 12 21 33 0 8 1 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 202 0 0 23 1 22 23 0 8 0 mtagpl 96 82 0 0 2 0 2 2 0 8 0 mbufpl 256 489 0 0 27 0 27 27 0 8 0 bufpl 280 7166 0 908 448 0 448 448 0 8 0 anonpl 16 246288 0 232735 134 59 75 90 0 124 0 amapchunkpl 152 12763 0 12463 33 14 19 20 0 158 5 amappl16 192 9060 0 8225 95 52 43 54 0 8 1 amappl15 184 11 0 9 1 0 1 1 0 8 0 amappl14 176 816 0 813 1 0 1 1 0 8 0 amappl13 168 76 0 75 1 0 1 1 0 8 0 amappl12 160 663 0 656 1 0 1 1 0 8 0 amappl11 152 91 0 74 1 0 1 1 0 8 0 amappl10 144 249 0 244 1 0 1 1 0 8 0 amappl9 136 478 0 478 3 3 0 1 0 8 0 amappl8 128 347 0 298 2 0 2 2 0 8 0 amappl7 120 581 0 572 1 0 1 1 0 8 0 amappl6 112 175 0 157 1 0 1 1 0 8 0 amappl5 104 2025 0 2011 1 0 1 1 0 8 0 amappl4 96 1164 0 1135 1 0 1 1 0 8 0 amappl3 88 936 0 929 1 0 1 1 0 8 0 amappl2 80 15348 0 15274 3 1 2 3 0 8 0 amappl1 72 79714 0 79258 24 14 10 19 0 8 0 amappl 80 6615 0 6525 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 63 0 3 1 0 1 1 0 8 0 uaddrrnd 24 2309 0 2281 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2309 0 2281 1 0 1 1 0 8 0 vmmpekpl 168 16281 0 16231 3 0 3 3 0 8 0 vmmpepl 168 303314 0 301233 235 109 126 126 0 357 32 vmsppl 368 2308 0 2281 5 2 3 3 0 8 0 pdppl 4096 4625 0 4574 9 2 7 7 0 8 0 pvpl 32 698452 0 681557 313 125 188 212 0 265 12 pmappl 232 2308 0 2281 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 335 0 46 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800024fc1450,158,0,ffff800024fc1614,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800024fc1450,158,0,ffff800024fc1614,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff8000000448c0,ffff800024fc16f8,fffffd80789eda00) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800024fc17f8,0,ffff800000b66560,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b5f800,ffff800024fc1ac8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800024fc1ac8,ffff800024fc1ad4,29,0,ffff800000b5f800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b5f800,fffffd80789eda00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff800024fc1db8,ffff8000214e7000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800024fc1c10) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8067f9ceb0,ffff800024fc1db8,11,fffffd807f7bf8a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca74e50,ffff800024fc1db8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800023faf170,f0,ffff800024fc1db8,0,ffff800024fc1ea0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800023faf170,ffff800024fc1e50,ffff800024fc1ea0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800024fc1f20) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024fc1f20) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2c3e49f1e40, 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 __sanitizer_cov_trace_cmp8(ffff800023fae028,ffff800023fae088) at __sanitizer_cov_trace_cmp8+0x7 sys/dev/kcov.c:169 syscall(ffff800024fbb020) at syscall+0x394 mi_syscall sys/sys/syscall_mi.h:81 [inline] syscall(ffff800024fbb020) at syscall+0x394 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffaec0, count: -6