uvm_fault(0xffffffff8286f048, 0xffffffff8269f578, 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(0xffffffff8286f048, 0xffffffff8269f578, 0, 2) -> e m_copyback(ffff800020eaa0d0,158,0,ffff800020eaa294,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800020eaa0d0,158,0,ffff800020eaa294,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff800020eaa350, count: 0 ddb{0}> trace m_copyback(ffff800020eaa0d0,158,0,ffff800020eaa294,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800020eaa0d0,158,0,ffff800020eaa294,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a80,ffff800020eaa378,fffffd8076afef00) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff800020eaa478,0,ffff800000b56540,0,ffffffff8287ae28,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b33000,ffff800020eaa748) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800020eaa748,ffff800020eaa754,29,0,ffff800000b33000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b33000,fffffd8076afef00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff800020eaaa38,ffff8000216d7000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff800020eaa890) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806f0f30d8,ffff800020eaaa38,11,fffffd807f7bf960) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8069607bf8,ffff800020eaaa38,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020eb0508,f0,ffff800020eaaa38,0,ffff800020eaab20) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800020eb0508,ffff800020eaaad0,ffff800020eaab20) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020eaaba0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020eaaba0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81ab53c5360, count: -14 ddb{0}> show registers rdi 0 rsi 0x623b3 acpi_pdirpa+0x4e21b rbp 0xffff800020eaa0b0 rbx 0xffffffffffff8a36 rdx 0x623b2 acpi_pdirpa+0x4e21a rcx 0xffffffff826da3c0 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff812f13b8 pf_translate_a+0x1a8 r10 0x1 r11 0x3414ad6d8db48eba r12 0xfffffd80660e5b00 r13 0x128 r14 0x30 r15 0xffff800020eaa2b0 rip 0xffffffff813d2419 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020ea9ff0 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=368290 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020eb0018,0xffffffff8287eb28 process=0xffff800020eb3b98 user=0xffff800020ea5000, vmspace=0xfffffd807efff730 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 99809 150812 83616 0 2 0 syz-executor.1 *99809 368290 83616 0 7 0x4000000 syz-executor.1 83312 401835 7122 0 3 0x82 nanosleep syz-executor.0 83616 455137 7122 0 3 0x82 nanosleep syz-executor.1 31697 251235 0 0 3 0x14200 bored sosplice 81164 465167 1 0 3 0x100083 ttyopn getty 7122 98529 92717 0 3 0x82 kqread syz-fuzzer 7122 55438 92717 0 3 0x4000082 nanosleep syz-fuzzer 7122 290953 92717 0 3 0x4000082 thrsleep syz-fuzzer 7122 263064 92717 0 3 0x4000082 thrsleep syz-fuzzer 7122 489308 92717 0 3 0x4000082 thrsleep syz-fuzzer 7122 5827 92717 0 3 0x4000082 thrsleep syz-fuzzer 7122 67594 92717 0 3 0x4000082 thrsleep syz-fuzzer 7122 465490 92717 0 3 0x4000082 thrsleep syz-fuzzer 92717 134667 99197 0 3 0x10008a pause ksh 99197 371101 12154 0 3 0x92 select sshd 12154 264283 1 0 3 0x80 select sshd 55395 436938 89351 74 3 0x100092 bpf pflogd 89351 224264 1 0 3 0x80 netio pflogd 15070 448731 62504 73 3 0x100090 kqread syslogd 62504 276274 1 0 3 0x100082 netio syslogd 43649 225701 1 77 3 0x100090 poll dhclient 53783 192025 1 0 3 0x80 poll dhclient 94777 438045 0 0 3 0x14200 bored smr 37731 484044 0 0 2 0x14200 zerothread 2641 38733 0 0 3 0x14200 aiodoned aiodoned 10998 454838 0 0 3 0x14200 syncer update 1994 186170 0 0 3 0x14200 cleaner cleaner 93774 246971 0 0 7 0x14200 reaper 83747 122355 0 0 3 0x14200 pgdaemon pagedaemon 3516 106219 0 0 3 0x14200 bored crynlk 4505 353122 0 0 3 0x14200 bored crypto 35616 461703 0 0 3 0x40014200 acpi0 acpi0 47377 31149 0 0 3 0x40014200 idle1 20709 212638 0 0 3 0x14200 bored softnet 73028 39455 0 0 3 0x14200 bored systqmp 75482 44417 0 0 3 0x14200 bored systq 51198 432044 0 0 3 0x40014200 bored softclock 15459 300728 0 0 3 0x40014200 idle0 1 117121 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 99809 (syz-executor.1) thread 0xffff800020eb0508 (368290) exclusive rwlock netlock r = 0 (0xffffffff82731d70) #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:866 #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:568 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8287ed58) #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:568 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9546 6439K 7307K 78643K 15877 0 pcb 13 8K 8K 78643K 255 0 rtable 71 3K 4K 78643K 941 0 ifaddr 88 16K 17K 78643K 372 0 counters 45 34K 34K 78643K 141 0 ioctlops 0 0K 4K 78643K 1696 0 iov 0 0K 32K 78643K 257 0 mount 1 1K 1K 78643K 1 0 vnodes 1232 77K 78K 78643K 3331 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 68 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 39 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 5386 0 sigio 0 0K 0K 78643K 31 0 proc 62 63K 95K 78643K 1067 0 subproc 32 2K 2K 78643K 136 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 361 0 in_multi 19 1K 2K 78643K 356 0 ether_multi 1 0K 0K 78643K 77 0 mrt 0 0K 0K 78643K 40 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 636 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 168 28K 40K 78643K 13526 0 UVM aobj 131 9K 9K 78643K 151 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 316 0 NDP 17 0K 0K 78643K 101 0 temp 149 3965K 4038K 78643K 36138 0 kqueue 3 4K 14K 78643K 270 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 16 0 12 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 96 208 0 206 1 0 1 1 0 8 0 rtentry 112 146 0 123 2 0 2 2 0 8 0 unpcb 120 1681 0 1670 1 0 1 1 0 8 0 syncache 272 131 0 131 7 7 0 1 0 8 0 tcpqe 32 88 0 88 5 5 0 1 0 8 0 tcpcb 592 1197 0 1182 26 22 4 8 0 8 1 inpcb 296 2747 0 2729 12 9 3 5 0 8 1 rttmr 72 20 0 20 2 2 0 1 0 8 0 nd6 48 43 0 40 1 0 1 1 0 8 0 pkpcb 40 8 0 8 1 1 0 1 0 8 0 kcovpl 48 8 0 6 1 0 1 1 0 8 0 ppxss 1128 16 0 15 2 1 1 1 0 8 0 pffrag 232 12 0 12 2 2 0 1 0 482 0 pffrnode 88 12 0 12 2 2 0 1 0 8 0 pffrent 40 34 0 34 4 4 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 28 0 26 3 2 1 1 0 8 0 pfstitem 24 116 0 77 1 0 1 1 0 8 0 pfstkey 112 116 0 77 2 0 2 2 0 8 0 pfstate 328 116 0 77 4 0 4 4 0 8 0 pfrule 1360 62 0 39 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1095 0 1014 14 7 7 12 0 8 0 art_table 32 1096 0 1014 2 0 2 2 0 8 0 art_node 16 145 0 127 1 0 1 1 0 8 0 sysvmsgpl 40 23 0 0 1 0 1 1 0 8 0 semupl 112 13 0 13 2 2 0 1 0 8 0 semapl 112 16 0 6 1 0 1 1 0 8 0 shmpl 112 148 0 20 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8723 0 7318 91 2 89 89 0 8 0 ffsino 272 8723 0 7318 95 0 95 95 0 8 0 nchpl 144 15340 0 13747 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 39418 0 39418 2 1 1 1 0 8 1 percpumem 16 81 0 48 1 0 1 1 0 8 0 vmpool 560 5 0 5 1 1 0 1 0 8 0 pfiaddrpl 120 5 0 0 1 0 1 1 0 8 0 scxspl 200 48435 0 48435 10 9 1 6 0 8 1 plimitpl 152 310 0 302 1 0 1 1 0 8 0 sigapl 424 5586 0 5554 4 0 4 4 0 8 0 futexpl 56 47023 0 47023 1 0 1 1 0 8 1 knotepl 112 436 0 416 1 0 1 1 0 8 0 kqueuepl 152 2685 0 2637 6 3 3 3 0 8 1 pipepl 304 485 0 474 8 6 2 2 0 8 0 fdescpl 496 5570 0 5554 3 0 3 3 0 8 0 filepl 152 21595 0 21493 6 1 5 6 0 8 0 lockfpl 104 851 0 850 1 0 1 1 0 8 0 lockfspl 48 354 0 353 1 0 1 1 0 8 0 sessionpl 120 25 0 14 1 0 1 1 0 8 0 pgrppl 48 25 0 14 1 0 1 1 0 8 0 ucredpl 96 3583 0 3574 1 0 1 1 0 8 0 zombiepl 144 5554 0 5553 2 1 1 1 0 8 0 processpl 1008 5586 0 5553 5 0 5 5 0 8 0 procpl 632 12274 0 12233 4 0 4 4 0 8 0 srpgc 72 2 0 2 1 1 0 1 0 8 0 sosppl 144 80 0 80 5 5 0 1 0 8 0 sockpl 400 4653 0 4622 16 12 4 7 0 8 0 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 16 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 26 0 0 4 2 2 3 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 314 0 0 15 0 15 15 0 8 0 mtagpl 96 241 0 0 5 0 5 5 0 8 0 mbufpl 256 781 0 0 42 0 42 42 0 8 0 bufpl 280 13258 0 6983 449 0 449 449 0 8 0 anonpl 16 494573 0 488137 97 69 28 48 0 124 1 amapchunkpl 152 26627 0 26460 21 13 8 20 0 158 0 amappl16 192 21932 0 21701 61 48 13 30 0 8 1 amappl15 184 9 0 8 1 0 1 1 0 8 0 amappl14 176 4 0 1 1 0 1 1 0 8 0 amappl13 168 1986 0 1982 1 0 1 1 0 8 0 amappl12 160 1400 0 1394 1 0 1 1 0 8 0 amappl11 152 80 0 65 1 0 1 1 0 8 0 amappl10 144 1287 0 1279 1 0 1 1 0 8 0 amappl9 136 361 0 361 2 2 0 1 0 8 0 amappl8 128 415 0 312 4 0 4 4 0 8 0 amappl7 120 1585 0 1576 1 0 1 1 0 8 0 amappl6 112 164 0 146 1 0 1 1 0 8 0 amappl5 104 5508 0 5495 1 0 1 1 0 8 0 amappl4 96 2285 0 2250 1 0 1 1 0 8 0 amappl3 88 423 0 417 1 0 1 1 0 8 0 amappl2 80 39743 0 39666 3 1 2 3 0 8 0 amappl1 72 152820 0 152344 24 14 10 19 0 8 0 amappl 80 12739 0 12681 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 64 150 0 20 3 0 3 3 0 8 0 uaddrrnd 24 5575 0 5559 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5575 0 5559 1 0 1 1 0 8 0 vmmpekpl 168 29538 0 29506 2 0 2 2 0 8 0 vmmpepl 168 684091 0 682521 146 74 72 86 0 357 2 vmsppl 368 5574 0 5558 2 0 2 2 0 8 0 pdppl 4096 11157 0 11116 6 0 6 6 0 8 0 pvpl 32 2017555 0 2008088 268 181 87 127 0 265 7 pmappl 232 5574 0 5558 4 3 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 311 0 35 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff800020eaa0d0,158,0,ffff800020eaa294,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff800020eaa0d0,158,0,ffff800020eaa294,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff800000044a80,ffff800020eaa378,fffffd8076afef00) at pflog_mtap+0x446 sys/net/if_pflog.c:390 pflog_packet(ffff800020eaa478,0,ffff800000b56540,0,ffffffff8287ae28,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b33000,ffff800020eaa748) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff800020eaa748,ffff800020eaa754,29,0,ffff800000b33000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b33000,fffffd8076afef00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff800020eaaa38,ffff8000216d7000,2) at tun_dev_write+0x204 sys/net/if_tun.c:867 spec_write(ffff800020eaa890) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806f0f30d8,ffff800020eaaa38,11,fffffd807f7bf960) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8069607bf8,ffff800020eaaa38,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020eb0508,f0,ffff800020eaaa38,0,ffff800020eaab20) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800020eb0508,ffff800020eaaad0,ffff800020eaab20) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020eaaba0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020eaaba0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:568 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81ab53c5360, 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_pc() at __sanitizer_cov_trace_pc+0x50 kd_curproc sys/dev/kcov.c:517 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x50 sys/dev/kcov.c:121 __mp_lock(ffffffff8287eb50) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8287eb50) at __mp_lock+0x133 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800020ddf3d0,1) at uvm_unmap_detach+0xfc sys/uvm/uvm_map.c:1581 uvm_map_teardown(fffffd807efffcf0) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2757 uvmspace_free(fffffd807efffcf0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff800020eb27e8) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff800020d98000) at reaper+0x189 sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -10