uvm_fault(0xffffffff827a92c8, 0xffffffff82698c98, 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(0xffffffff827a92c8, 0xffffffff82698c98, 0, 2) -> e m_copyback(ffff8000222b07a0,138,0,ffff8000222b0964,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000222b07a0,138,0,ffff8000222b0964,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff8000222b0a20, count: 0 ddb{0}> trace m_copyback(ffff8000222b07a0,138,0,ffff8000222b0964,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000222b07a0,138,0,ffff8000222b0964,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044980,ffff8000222b0a48,fffffd806999d200) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff8000222b0b48,0,ffff800000ac7fd8,0,ffffffff828c24c0,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b45800,ffff8000222b0e18) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000222b0e18,ffff8000222b0e24,29,0,ffff800000b45800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b45800,fffffd806999d200) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff8000222b1108,ffff8000244ce000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff8000222b0f60) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e661758,ffff8000222b1108,11,fffffd807f7b7a80) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd8069d5f7d0,ffff8000222b1108,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002123d498,f0,ffff8000222b1108,0,ffff8000222b11f0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff80002123d498,ffff8000222b11a0,ffff8000222b11f0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000222b1270) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000222b1270) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1a01ff4a9a0, count: -14 ddb{0}> show registers rdi 0 rsi 0x9da13 acpi_pdirpa+0x8987b rbp 0xffff8000222b0780 rbx 0xffffffffffffb12a rdx 0x9da12 acpi_pdirpa+0x8987a rcx 0xffffffff826c0340 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0x1 r10 0x5a32fab043a43581 r11 0x35626be88553025a r12 0xfffffd807f008b00 r13 0x108 r14 0x30 r15 0xffff8000222b0980 rip 0xffffffff8134b169 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000222b06c0 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=479675 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002123c018,0xffffffff82932800 process=0xffff8000212354b0 user=0xffff8000222ac000, vmspace=0xfffffd806a06a2f0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 63430 414956 97331 0 7 0 syz-executor.0 *63430 479675 97331 0 7 0x4000000 syz-executor.0 35249 384540 72111 0 2 0x482 syz-executor.1 97331 393945 72111 0 3 0x82 nanosleep syz-executor.0 4196 222401 1 0 3 0x100083 ttyin getty 83023 29247 0 0 3 0x14200 bored sosplice 72111 414350 23208 0 3 0x82 thrsleep syz-fuzzer 72111 40518 23208 0 3 0x4000082 nanosleep syz-fuzzer 72111 327718 23208 0 3 0x4000082 kqread syz-fuzzer 72111 468628 23208 0 3 0x4000082 thrsleep syz-fuzzer 72111 368888 23208 0 3 0x4000082 thrsleep syz-fuzzer 72111 30500 23208 0 3 0x4000082 nanosleep syz-fuzzer 72111 66200 23208 0 3 0x4000082 thrsleep syz-fuzzer 72111 248604 23208 0 3 0x4000082 thrsleep syz-fuzzer 23208 246340 72168 0 3 0x10008a pause ksh 72168 92931 57941 0 3 0x92 select sshd 57941 108096 1 0 3 0x80 select sshd 94627 201493 60150 74 3 0x100092 bpf pflogd 60150 48179 1 0 3 0x80 netio pflogd 6019 220414 47218 73 3 0x100090 kqread syslogd 47218 297969 1 0 3 0x100082 netio syslogd 75337 339399 1 77 3 0x100090 poll dhclient 86828 193142 1 0 3 0x80 poll dhclient 27019 289106 0 0 3 0x14200 bored smr 89332 108725 0 0 2 0x14200 zerothread 61800 180475 0 0 3 0x14200 aiodoned aiodoned 68626 443545 0 0 3 0x14200 syncer update 77522 212652 0 0 3 0x14200 cleaner cleaner 63980 49604 0 0 3 0x14200 reaper reaper 17027 385593 0 0 3 0x14200 pgdaemon pagedaemon 19845 97007 0 0 3 0x14200 bored crynlk 62205 67973 0 0 3 0x14200 bored crypto 42993 137968 0 0 3 0x14200 bored viomb 61120 519038 0 0 3 0x40014200 acpi0 acpi0 84347 10303 0 0 3 0x40014200 idle1 35213 63393 0 0 3 0x14200 bored softnet 56654 297229 0 0 3 0x14200 bored systqmp 15433 494641 0 0 3 0x14200 bored systq 71273 280226 0 0 2 0x40014200 softclock 76229 476420 0 0 3 0x40014200 idle0 1 372602 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 63430 (syz-executor.0) thread 0xffff80002123d498 (479675) exclusive rwlock netlock r = 0 (0xffffffff826cbdf0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1176 #1 tun_dev_write+0x1f9 sys/net/if_tun.c:866 #2 spec_write+0xd4 sys/kern/spec_vnops.c:309 #3 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 #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:590 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828b6458) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1176 #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:590 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9561 6586K 8114K 78643K 16720 0 pcb 13 8K 8K 78643K 294 0 rtable 111 4K 5K 78643K 1043 0 ifaddr 83 16K 17K 78643K 379 0 sysctl 3 1K 1K 78643K 3 0 counters 45 34K 34K 78643K 165 0 ioctlops 0 0K 4K 78643K 1647 0 iov 0 0K 16K 78643K 136 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 78K 78643K 3252 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 10 0K 0K 78643K 10 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1825 197K 290K 78643K 13109 0 file desc 5 13K 25K 78643K 5912 0 sigio 0 0K 0K 78643K 37 0 proc 62 63K 95K 78643K 935 0 subproc 32 2K 2K 78643K 148 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 296 0 in_multi 33 2K 2K 78643K 279 0 ether_multi 1 0K 0K 78643K 84 0 mrt 0 0K 0K 78643K 59 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 683 0 pfkey data 0 0K 0K 78643K 1 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 228 180K 195K 78643K 14641 0 UVM aobj 16 2K 2K 78643K 24 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 239 0 NDP 15 0K 0K 78643K 91 0 temp 146 3975K 4040K 78643K 26561 0 kqueue 3 4K 22K 78643K 205 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 13 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 169 0 167 1 0 1 1 0 8 0 rtentry 112 136 0 91 2 0 2 2 0 8 0 unpcb 120 1009 0 990 3 2 1 2 0 8 0 syncache 296 43 0 43 8 8 0 1 0 8 0 tcpqe 32 749 0 749 6 5 1 2 0 8 1 tcpcb 736 873 0 862 13 11 2 4 0 8 0 inpcb 296 2377 0 2365 7 5 2 2 0 8 1 rttmr 72 22 0 22 5 4 1 1 0 8 1 nd6 48 25 0 19 1 0 1 1 0 8 0 pkpcb 40 7 0 7 2 2 0 1 0 8 0 kcovpl 48 8 0 6 1 0 1 1 0 8 0 ppxss 1128 6 0 6 2 2 0 1 0 8 0 pffrag 232 13 0 13 4 4 0 1 0 482 0 pffrnode 88 13 0 13 4 4 0 1 0 8 0 pffrent 40 337 0 337 5 5 0 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 3 0 1 1 0 1 1 0 8 0 pfstitem 24 39 0 37 1 0 1 1 0 8 0 pfstkey 112 39 0 37 1 0 1 1 0 8 0 pfstate 328 39 0 37 2 1 1 2 0 8 0 pfrule 1360 84 0 67 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 484 0 288 14 1 13 13 0 8 0 art_table 32 485 0 288 2 0 2 2 0 8 0 art_node 16 135 0 94 1 0 1 1 0 8 0 sysvmsgpl 40 39 0 13 1 0 1 1 0 8 0 semupl 112 10 0 10 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 21 0 9 2 1 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8594 0 7196 93 5 88 89 0 8 0 ffsino 272 8594 0 7196 96 2 94 95 0 8 0 nchpl 144 15431 0 13838 60 0 60 60 0 8 0 uvmvnodes 72 10206 0 0 186 0 186 186 0 8 0 vnodes 208 10206 0 0 538 0 538 538 0 8 0 namei 1024 38819 0 38819 2 1 1 1 0 8 1 percpumem 16 93 0 60 1 0 1 1 0 8 0 vcpupl 1984 11 0 0 2 0 2 2 0 8 0 vmpool 560 14 0 3 1 0 1 1 0 8 0 pfiaddrpl 120 5 0 0 1 0 1 1 0 8 0 scxspl 216 46067 0 46067 18 17 1 8 0 8 1 plimitpl 152 263 0 255 1 0 1 1 0 8 0 sigapl 424 6121 0 6088 4 0 4 4 0 8 0 futexpl 56 38994 0 38994 2 1 1 1 0 8 1 knotepl 112 416 0 396 2 1 1 2 0 8 0 kqueuepl 152 3088 0 3073 1 0 1 1 0 8 0 pipepl 304 320 0 309 13 11 2 2 0 8 1 fdescpl 496 6096 0 6080 3 0 3 3 0 8 0 filepl 152 19827 0 19725 7 2 5 6 0 8 0 lockfpl 104 830 0 829 1 0 1 1 0 8 0 lockfspl 48 304 0 303 1 0 1 1 0 8 0 sessionpl 144 26 0 15 1 0 1 1 0 8 0 pgrppl 48 32 0 21 1 0 1 1 0 8 0 ucredpl 96 2361 0 2352 1 0 1 1 0 8 0 zombiepl 144 6088 0 6087 2 1 1 1 0 8 0 processpl 1056 6121 0 6087 3 0 3 3 0 8 0 procpl 656 13501 0 13459 5 1 4 5 0 8 0 sosppl 168 64 0 64 3 3 0 1 0 8 0 sockpl 400 3574 0 3543 8 3 5 6 0 8 0 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 12 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 348 0 0 25 0 25 25 0 8 0 mtagpl 96 298 0 0 7 0 7 7 0 8 0 mbufpl 256 917 0 0 50 0 50 50 0 8 0 bufpl 280 11708 0 5461 447 0 447 447 0 8 0 anonpl 16 479718 0 470124 74 34 40 69 0 124 0 amapchunkpl 152 25714 0 25481 37 26 11 23 0 158 0 amappl16 192 22200 0 21813 53 33 20 41 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 30 0 23 1 0 1 1 0 8 0 amappl13 168 98 0 96 1 0 1 1 0 8 0 amappl12 160 749 0 745 1 0 1 1 0 8 0 amappl11 152 1016 0 999 1 0 1 1 0 8 0 amappl10 144 1194 0 1189 1 0 1 1 0 8 0 amappl9 136 15 0 15 1 1 0 1 0 8 0 amappl8 128 4750 0 4650 4 0 4 4 0 8 0 amappl7 120 316 0 309 1 0 1 1 0 8 0 amappl6 112 1267 0 1249 1 0 1 1 0 8 0 amappl5 104 7130 0 7108 1 0 1 1 0 8 0 amappl4 96 1892 0 1858 1 0 1 1 0 8 0 amappl3 88 319 0 311 1 0 1 1 0 8 0 amappl2 80 41930 0 41860 3 0 3 3 0 8 0 amappl1 72 186315 0 185841 25 15 10 19 0 8 0 amappl 80 13943 0 13856 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 23 0 8 1 0 1 1 0 8 0 uaddrrnd 24 6110 0 6083 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6110 0 6083 1 0 1 1 0 8 0 vmmpekpl 168 31559 0 31525 2 0 2 2 0 8 0 vmmpepl 168 769474 0 767772 135 44 91 98 0 357 10 vmsppl 368 6109 0 6083 3 0 3 3 0 8 0 pdppl 4096 12227 0 12177 72 20 52 54 0 8 2 pvpl 32 1954030 0 1941170 231 120 111 170 0 265 3 pmappl 232 6109 0 6083 3 1 2 2 0 8 0 extentpl 40 57 0 39 1 0 1 1 0 8 0 phpool 112 394 0 46 11 1 10 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff8000222b07a0,138,0,ffff8000222b0964,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff8000222b07a0,138,0,ffff8000222b0964,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044980,ffff8000222b0a48,fffffd806999d200) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff8000222b0b48,0,ffff800000ac7fd8,0,ffffffff828c24c0,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b45800,ffff8000222b0e18) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff8000222b0e18,ffff8000222b0e24,29,0,ffff800000b45800) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b45800,fffffd806999d200) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d00,ffff8000222b1108,ffff8000244ce000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff8000222b0f60) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e661758,ffff8000222b1108,11,fffffd807f7b7a80) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:274 vn_write(fffffd8069d5f7d0,ffff8000222b1108,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff80002123d498,f0,ffff8000222b1108,0,ffff8000222b11f0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff80002123d498,ffff8000222b11a0,ffff8000222b11f0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff8000222b1270) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000222b1270) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1a01ff4a9a0, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d68ff0) 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: 0x7f7fffffae40, count: -3