uvm_fault(0xffffffff828771d8, 0xffffffff8268ee00, 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(0xffffffff828771d8, 0xffffffff8268ee00, 0, 2) -> e m_copyback(ffff800021f2f300,ac,0,ffff800021f2f4c4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021f2f300,ac,0,ffff800021f2f4c4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800021f2f580, count: 0 ddb{0}> trace m_copyback(ffff800021f2f300,ac,0,ffff800021f2f4c4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021f2f300,ac,0,ffff800021f2f4c4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044880,ffff800021f2f5a8,fffffd806b682a00) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800021f2f6a8,0,ffff800000b83a98,0,ffffffff8287f010,0) at pflog_packet+0x3a4 pf_test(2,1,ffff800000adc000,ffff800021f2f8c8) at pf_test+0xfc5 sys/net/pf.c:7226 ip_input_if(ffff800021f2f8c8,ffff800021f2f8d4,4,0,ffff800000adc000) at ip_input_if+0x578 sys/netinet/ip_input.c:316 ipv4_input(ffff800000adc000,fffffd806b682a00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 tun_dev_write(5d00,ffff800021f2fbb8,ffff800020eeb000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800021f2fa10) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806ed90418,ffff800021f2fbb8,11,fffffd807f7bf8a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8069bf8a30,ffff800021f2fbb8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000ffffb3d8,f0,ffff800021f2fbb8,0,ffff800021f2fca0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000ffffb3d8,ffff800021f2fc50,ffff800021f2fca0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800021f2fd20) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f2fd20) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe6e171c0430, count: -14 ddb{0}> show registers rdi 0 rsi 0x84673 acpi_pdirpa+0x704db rbp 0xffff800021f2f2e0 rbx 0xffffffffffff878f rdx 0x84672 acpi_pdirpa+0x704da rcx 0xffffffff826cb180 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81c45478 pf_translate_a+0x1a8 r10 0x1 r11 0x18019edce159c090 r12 0xfffffd8068ea9d00 r13 0x8c r14 0x20 r15 0xffff800021f2f4e0 rip 0xffffffff81363199 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f2f220 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.0) pid=436687 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffa508,0xffffffff8288acf0 process=0xffff800020ec4008 user=0xffff800021f2a000, vmspace=0xfffffd8066666a28 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 45045 101724 65680 0 7 0 syz-executor.0 *45045 436687 65680 0 7 0x4000000 syz-executor.0 78161 163899 1 0 3 0x100083 ttyin getty 5895 476753 64061 0 3 0x82 nanosleep syz-executor.1 94832 389176 0 0 3 0x14200 bored sosplice 65680 203339 64061 0 3 0x82 nanosleep syz-executor.0 64061 322849 5774 0 3 0x82 thrsleep syz-fuzzer 64061 420093 5774 0 3 0x4000082 nanosleep syz-fuzzer 64061 365373 5774 0 3 0x4000082 thrsleep syz-fuzzer 64061 193108 5774 0 3 0x4000082 thrsleep syz-fuzzer 64061 265055 5774 0 3 0x4000082 thrsleep syz-fuzzer 64061 238714 5774 0 3 0x4000082 thrsleep syz-fuzzer 64061 351828 5774 0 3 0x4000082 thrsleep syz-fuzzer 64061 195951 5774 0 3 0x4000082 kqread syz-fuzzer 5774 455984 39214 0 3 0x10008a pause ksh 39214 385302 16918 0 3 0x92 select sshd 16918 401298 1 0 3 0x80 select sshd 25737 12825 43806 74 3 0x100092 bpf pflogd 43806 307127 1 0 3 0x80 netio pflogd 32731 81626 30283 73 3 0x100090 kqread syslogd 30283 209446 1 0 3 0x100082 netio syslogd 8502 93239 1 77 3 0x100090 poll dhclient 54037 14515 1 0 3 0x80 poll dhclient 86739 87324 0 0 3 0x14200 bored smr 17404 52995 0 0 2 0x14200 zerothread 97946 521739 0 0 3 0x14200 aiodoned aiodoned 2021 9450 0 0 3 0x14200 syncer update 75444 215941 0 0 3 0x14200 cleaner cleaner 73459 355408 0 0 3 0x14200 reaper reaper 506 347807 0 0 3 0x14200 pgdaemon pagedaemon 40787 316865 0 0 3 0x14200 bored crynlk 77296 87055 0 0 3 0x14200 bored crypto 87576 185698 0 0 3 0x40014200 acpi0 acpi0 84032 336753 0 0 3 0x40014200 idle1 86216 355006 0 0 3 0x14200 bored softnet 41148 324871 0 0 3 0x14200 bored systqmp 55195 505531 0 0 3 0x14200 bored systq 82829 109629 0 0 3 0x40014200 bored softclock 95268 194792 0 0 3 0x40014200 idle0 1 245344 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 45045 (syz-executor.0) thread 0xffff8000ffffb3d8 (436687) exclusive rwlock netlock r = 0 (0xffffffff82737530) #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 (0xffffffff82879158) #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 9534 6433K 7439K 78643K 18186 0 pcb 13 8K 8K 78643K 391 0 rtable 76 4K 6K 78643K 1388 0 ifaddr 77 15K 17K 78643K 546 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 187 0 ioctlops 0 0K 4K 78643K 1888 0 iov 0 0K 24K 78643K 284 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 3569 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 39 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 546 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 6146 0 sigio 0 0K 0K 78643K 40 0 proc 68 63K 95K 78643K 931 0 subproc 32 2K 2K 78643K 90 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 464 0 in_multi 24 1K 2K 78643K 330 0 ether_multi 1 0K 0K 78643K 68 0 mrt 0 0K 0K 78643K 26 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 680 0 pfkey data 0 0K 1K 78643K 5 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 229 388K 403K 78643K 15222 0 UVM aobj 98 9K 9K 78643K 113 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 427 0 NDP 14 0K 0K 78643K 105 0 temp 148 3980K 4044K 78643K 28084 0 kqueue 3 4K 12K 78643K 249 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 18 0 14 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 96 237 0 235 1 0 1 1 0 8 0 rtentry 112 154 0 130 2 0 2 2 0 8 0 unpcb 120 1393 0 1375 2 1 1 2 0 8 0 syncache 272 59 0 59 10 9 1 1 0 8 1 tcpqe 32 47 0 47 6 6 0 1 0 8 0 tcpcb 592 1176 0 1145 23 20 3 5 0 8 0 inpcb 296 3001 0 2990 13 11 2 2 0 8 1 rttmr 72 4 0 4 1 1 0 1 0 8 0 nd6 48 24 0 22 1 0 1 1 0 8 0 pkpcb 40 21 0 21 1 1 0 1 0 8 0 kcovpl 48 5 0 3 1 0 1 1 0 8 0 swfcl 56 4 0 0 1 0 1 1 0 8 0 ppxss 1136 7 0 7 1 1 0 1 0 8 0 pfstscr 40 15 0 15 2 1 1 1 0 8 1 pffrag 232 25 0 25 4 3 1 1 0 482 1 pffrnode 88 25 0 25 4 3 1 1 0 8 1 pffrent 40 57 0 57 4 3 1 1 0 8 1 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 99 0 97 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfqueue 264 1 0 1 1 1 0 1 0 8 0 pfstitem 24 28 0 26 1 0 1 1 0 8 0 pfstkey 112 46 0 44 1 0 1 1 0 8 0 pfstate 328 36 0 34 2 1 1 2 0 8 0 pfrule 1360 116 0 59 6 1 5 5 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 603 0 457 14 3 11 13 0 8 0 art_table 32 604 0 457 2 0 2 2 0 8 0 art_node 16 140 0 118 1 0 1 1 0 8 0 sysvmsgpl 40 48 0 8 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 538 0 528 1 0 1 1 0 8 0 shmpl 112 110 0 15 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9249 0 7831 91 1 90 90 0 8 0 ffsino 272 9249 0 7831 96 0 96 96 0 8 0 nchpl 144 16785 0 15205 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 41099 0 41099 1 0 1 1 0 8 1 percpumem 16 104 0 72 1 0 1 1 0 8 0 vcpupl 1984 24 0 0 3 0 3 3 0 8 0 vmpool 560 24 0 0 2 0 2 2 0 8 0 pfiaddrpl 120 34 0 29 3 2 1 1 0 8 0 scxspl 200 55030 0 55030 17 13 4 7 0 8 4 plimitpl 152 171 0 163 1 0 1 1 0 8 0 sigapl 424 6355 0 6323 4 0 4 4 0 8 0 futexpl 56 44752 0 44752 1 0 1 1 0 8 1 knotepl 112 361 0 341 1 0 1 1 0 8 0 kqueuepl 152 2663 0 2654 1 0 1 1 0 8 0 pipepl 304 295 0 284 10 8 2 2 0 8 1 fdescpl 496 6339 0 6323 3 0 3 3 0 8 0 filepl 152 21518 0 21416 5 0 5 5 0 8 1 lockfpl 104 759 0 758 1 0 1 1 0 8 0 lockfspl 48 307 0 306 1 0 1 1 0 8 0 sessionpl 120 23 0 12 1 0 1 1 0 8 0 pgrppl 48 51 0 40 1 0 1 1 0 8 0 ucredpl 96 2217 0 2204 1 0 1 1 0 8 0 zombiepl 144 6323 0 6322 1 0 1 1 0 8 0 processpl 1008 6355 0 6322 5 0 5 5 0 8 0 procpl 632 14109 0 14068 4 0 4 4 0 8 0 sosppl 144 64 0 64 7 6 1 1 0 8 1 sockpl 400 4657 0 4626 9 5 4 5 0 8 0 mcl64k 65536 269 0 0 34 11 23 34 0 8 1 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 19 0 0 2 0 2 2 0 8 0 mcl9k 9216 10 0 0 1 0 1 1 0 8 0 mcl8k 8192 26 0 0 4 1 3 3 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 296 0 0 16 0 16 16 0 8 0 mtagpl 96 387 0 0 9 0 9 9 0 8 0 mbufpl 256 1212 0 0 73 1 72 73 0 8 0 bufpl 280 17782 0 11526 449 1 448 448 0 8 0 anonpl 16 522392 0 514329 77 36 41 45 0 124 5 amapchunkpl 152 27754 0 27525 31 16 15 23 0 158 5 amappl16 192 22795 0 22499 54 38 16 25 0 8 0 amappl15 184 1211 0 1211 2 2 0 1 0 8 0 amappl14 176 1131 0 1121 1 0 1 1 0 8 0 amappl13 168 56 0 55 1 0 1 1 0 8 0 amappl12 160 11 0 8 1 0 1 1 0 8 0 amappl11 152 3162 0 3145 1 0 1 1 0 8 0 amappl10 144 14 0 9 1 0 1 1 0 8 0 amappl9 136 994 0 993 2 1 1 1 0 8 0 amappl8 128 974 0 877 4 0 4 4 0 8 0 amappl7 120 295 0 284 1 0 1 1 0 8 0 amappl6 112 3248 0 3229 1 0 1 1 0 8 0 amappl5 104 3416 0 3403 1 0 1 1 0 8 0 amappl4 96 3457 0 3424 1 0 1 1 0 8 0 amappl3 88 1305 0 1296 1 0 1 1 0 8 0 amappl2 80 45118 0 45037 3 1 2 3 0 8 0 amappl1 72 173427 0 172966 24 14 10 19 0 8 0 amappl 80 14494 0 14402 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 64 112 0 15 2 0 2 2 0 8 0 uaddrrnd 24 6363 0 6323 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6363 0 6323 1 0 1 1 0 8 0 vmmpekpl 168 32176 0 32131 3 0 3 3 0 8 0 vmmpepl 168 775779 0 774155 128 50 78 84 0 357 1 vmsppl 368 6362 0 6323 4 0 4 4 0 8 0 pdppl 4096 12733 0 12670 9 0 9 9 0 8 0 pvpl 32 2154411 0 2143119 250 136 114 126 0 265 16 pmappl 232 6362 0 6323 5 2 3 3 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 377 0 34 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800021f2f300,ac,0,ffff800021f2f4c4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800021f2f300,ac,0,ffff800021f2f4c4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044880,ffff800021f2f5a8,fffffd806b682a00) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff800021f2f6a8,0,ffff800000b83a98,0,ffffffff8287f010,0) at pflog_packet+0x3a4 pf_test(2,1,ffff800000adc000,ffff800021f2f8c8) at pf_test+0xfc5 sys/net/pf.c:7226 ip_input_if(ffff800021f2f8c8,ffff800021f2f8d4,4,0,ffff800000adc000) at ip_input_if+0x578 sys/netinet/ip_input.c:316 ipv4_input(ffff800000adc000,fffffd806b682a00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 tun_dev_write(5d00,ffff800021f2fbb8,ffff800020eeb000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff800021f2fa10) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806ed90418,ffff800021f2fbb8,11,fffffd807f7bf8a0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8069bf8a30,ffff800021f2fbb8,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000ffffb3d8,f0,ffff800021f2fbb8,0,ffff800021f2fca0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff8000ffffb3d8,ffff800021f2fc50,ffff800021f2fca0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800021f2fd20) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f2fd20) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe6e171c0430, 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: 0x7f7ffffd09e0, count: -3