login: uvm_fault(0xffffffff82892260, 0xfffffd0000000018, 0, 1) -> e kernel: page fault trap, code=0 Stopped at sbdrop+0x168: movl 0x18(%r15),%ebx ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff82892260, 0xfffffd0000000018, 0, 1) -> e sbdrop(fffffd806f691af0,fffffd806f691be8,498) at sbdrop+0x168 sys/kern/uipc_socket2.c:978 end trace frame: 0xffff800020db9a40, count: 0 ddb{0}> trace sbdrop(fffffd806f691af0,fffffd806f691be8,498) at sbdrop+0x168 sys/kern/uipc_socket2.c:978 tcp_input(ffff800020db9c08,ffff800020db9c14,6,2) at tcp_input+0x3d76 sys/netinet/tcp_input.c:1725 ip_deliver(ffff800020db9c08,ffff800020db9c14,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020db9c08,ffff800020db9c14,ffff800020d984e0,0) at ip_ours+0x412 ip_input_if(ffff800020db9c08,ffff800020db9c14,4,0,ffff80000017b2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017b2a8,fffffd806d401a00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff80000017b2a8,fffffd806d401a00,0) at ether_input+0x345 sys/net/if_ethersubr.c:461 if_input_process(ffff80000017b2a8,ffff800020db9d38) at if_input_process+0x10b if_ih_input sys/net/if.c:908 [inline] if_input_process(ffff80000017b2a8,ffff800020db9d38) at if_input_process+0x10b sys/net/if.c:942 ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -10 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020db98a0 rbx 0 rdx 0xffffffff828e92b0 mclpools rcx 0 rax 0 r8 0xffffffff81c68848 sbdrop+0x248 r9 0x3 r10 0x24f367a8c447cce3 r11 0x869a9b75ff068182 r12 0xffffffffffffff00 r13 0x900 r14 0xfffffd806f691be8 r15 0xfffffd0000000000 rip 0xffffffff81c68768 sbdrop+0x168 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020db9840 ss 0x10 sbdrop+0x168: movl 0x18(%r15),%ebx ddb{0}> show proc PROC (softnet) pid=468517 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d98750,0xffff800020d98280 process=0xffff800020d9ab88 user=0xffff800020db4000, vmspace=0xffffffff828a4ea8 estcpu=0, cpticks=1, pctcpu=1.6 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 66201 155364 20569 0 7 0 syz-executor.1 66201 159155 20569 0 3 0x4000080 fsleep syz-executor.1 35834 361956 0 0 3 0x14200 bored sosplice 20569 322604 96570 0 2 0x482 syz-executor.1 63535 455573 96570 0 2 0x2 syz-executor.0 96570 314356 53373 0 3 0x82 thrsleep syz-fuzzer 96570 478565 53373 0 3 0x4000082 nanosleep syz-fuzzer 96570 98177 53373 0 3 0x4000082 thrsleep syz-fuzzer 96570 462187 53373 0 3 0x4000082 thrsleep syz-fuzzer 96570 143340 53373 0 3 0x4000082 thrsleep syz-fuzzer 96570 495586 53373 0 3 0x4000082 thrsleep syz-fuzzer 96570 114503 53373 0 3 0x4000082 kqread syz-fuzzer 96570 308407 53373 0 3 0x4000082 thrsleep syz-fuzzer 96570 148271 53373 0 3 0x4000082 thrsleep syz-fuzzer 96570 513194 53373 0 2 0x4000482 syz-fuzzer 53373 419100 40673 0 3 0x10008a pause ksh 40673 28230 31737 0 3 0x92 select sshd 9359 517062 1 0 3 0x100083 ttyin getty 31737 447210 1 0 3 0x80 select sshd 95058 132238 96057 74 3 0x100092 bpf pflogd 96057 412862 1 0 3 0x80 netio pflogd 82076 419633 54038 73 3 0x100090 kqread syslogd 54038 154503 1 0 3 0x100082 netio syslogd 68297 151873 1 77 3 0x100090 poll dhclient 24262 264202 1 0 3 0x80 poll dhclient 10312 79730 0 0 3 0x14200 bored smr 15571 248710 0 0 3 0x14200 pgzero zerothread 6774 423858 0 0 3 0x14200 aiodoned aiodoned 38814 159605 0 0 3 0x14200 syncer update 31536 456200 0 0 3 0x14200 cleaner cleaner 19331 363228 0 0 3 0x14200 reaper reaper 78548 198262 0 0 3 0x14200 pgdaemon pagedaemon 56911 76706 0 0 3 0x14200 bored crynlk 56205 126276 0 0 3 0x14200 bored crypto 95913 204282 0 0 3 0x40014200 acpi0 acpi0 13432 99942 0 0 3 0x40014200 idle1 *67561 468517 0 0 7 0x14200 softnet 86070 514895 0 0 3 0x14200 bored systqmp 3293 188830 0 0 3 0x14200 bored systq 35465 205517 0 0 3 0x40014200 bored softclock 78697 363722 0 0 3 0x40014200 idle0 1 195892 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 63535 (syz-executor.0) thread 0xffff800020dec4e8 (455573) exclusive rrwlock inode r = 0 (0xfffffd806b202808) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vget+0x1c8 sys/kern/vfs_subr.c:671 #6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1329 #8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #11 namei+0x63c sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b2025e8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 Process 67561 (softnet) thread 0xffff800020d984e0 (468517) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82899c48) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 #2 kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 #3 alltraps_kern_meltdown+0x7b #4 sbdrop+0x168 sys/kern/uipc_socket2.c:978 #5 tcp_input+0x3d76 sys/netinet/tcp_input.c:1725 #6 ip_deliver+0x353 sys/netinet/ip_input.c:668 #7 ip_ours+0x412 #8 ip_input_if+0x6ce #9 ipv4_input+0x48 sys/netinet/ip_input.c:215 #10 ether_input+0x345 sys/net/if_ethersubr.c:461 #11 if_input_process+0x10b if_ih_input sys/net/if.c:908 [inline] #11 if_input_process+0x10b sys/net/if.c:942 #12 ifiq_process+0x80 sys/net/ifq.c:646 #13 taskq_thread+0xec sys/kern/kern_task.c:437 #14 proc_trampoline+0x1c exclusive rwlock netlock r = 0 (0xffffffff8275b1d8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 if_input_process+0x85 sys/net/if.c:941 #2 ifiq_process+0x80 sys/net/ifq.c:646 #3 taskq_thread+0xec sys/kern/kern_task.c:437 #4 proc_trampoline+0x1c shared rwlock softnet r = 0 (0xffff80000002c070) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 taskq_thread+0xdf sys/kern/kern_task.c:436 #2 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9507 6537K 7503K 78643K 11383 0 pcb 13 8K 8K 78643K 54 0 rtable 114 5K 5K 78643K 250 0 ifaddr 68 14K 15K 78643K 100 0 counters 43 33K 34K 78643K 53 0 ioctlops 0 0K 4K 78643K 1490 0 iov 0 0K 32K 78643K 132 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1413 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 43 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 193 0 sigio 0 0K 0K 78643K 8 0 proc 61 63K 95K 78643K 443 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 12 0 in_multi 68 3K 3K 78643K 85 0 ether_multi 1 0K 0K 78643K 8 0 mrt 0 0K 0K 78643K 4 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 1K 78643K 212 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 120 39K 39K 78643K 1551 0 UVM aobj 4 2K 2K 78643K 4 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 24 0 NDP 9 0K 0K 78643K 18 0 temp 88 3852K 3916K 78643K 5452 0 kqueue 3 4K 8K 78643K 10 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 6 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 23 0 21 1 0 1 1 0 8 0 rtentry 112 48 0 3 2 0 2 2 0 8 0 unpcb 120 85 0 75 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 tcpqe 32 244 0 244 1 1 0 1 0 8 0 tcpcb 544 65 0 60 1 0 1 1 0 8 0 inpcb 280 216 0 208 1 0 1 1 0 8 0 rttmr 72 2 0 2 1 0 1 1 0 8 1 nd6 48 6 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 ppxss 1128 2 0 2 1 1 0 1 0 8 0 pffrag 232 2 0 2 1 0 1 1 0 482 1 pffrnode 88 2 0 2 1 0 1 1 0 8 1 pffrent 40 4 0 4 1 0 1 1 0 8 1 pfosfp 40 847 0 423 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 3 0 1 1 0 1 1 0 8 0 pfstitem 24 15 0 0 1 0 1 1 0 8 0 pfstkey 112 15 0 0 1 0 1 1 0 8 0 pfstate 328 15 0 0 2 0 2 2 0 8 0 pfrule 1360 25 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 195 0 0 13 0 13 13 0 8 0 art_table 32 197 0 0 2 0 2 2 0 8 0 art_node 16 47 0 6 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 1 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 39 0 29 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1630 0 224 89 0 89 89 0 8 1 ffsino 272 1630 0 224 94 0 94 94 0 8 0 nchpl 144 2121 0 511 60 0 60 60 0 8 0 uvmvnodes 72 1850 0 0 34 0 34 34 0 8 0 vnodes 208 1850 0 0 98 0 98 98 0 8 0 namei 1024 5688 0 5688 1 0 1 1 0 8 1 percpumem 16 37 0 5 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 2 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 scxspl 192 6363 0 6363 8 1 7 7 0 8 7 plimitpl 152 31 0 23 1 0 1 1 0 8 0 sigapl 424 409 0 377 4 0 4 4 0 8 0 futexpl 56 2788 0 2787 1 0 1 1 0 8 0 knotepl 112 69 0 50 1 0 1 1 0 8 0 kqueuepl 144 16 0 14 1 0 1 1 0 8 0 pipelkpl 48 99 0 89 1 0 1 1 0 8 0 pipepl 120 198 0 179 1 0 1 1 0 8 0 fdescpl 496 393 0 377 3 0 3 3 0 8 0 filepl 152 2147 0 2046 6 1 5 5 0 8 1 lockfpl 104 59 0 58 1 0 1 1 0 8 0 lockfspl 48 18 0 17 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 151 0 142 1 0 1 1 0 8 0 zombiepl 144 377 0 377 1 0 1 1 0 8 1 processpl 984 409 0 377 6 1 5 5 0 8 0 procpl 624 790 0 748 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 400 326 0 306 4 1 3 3 0 8 1 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 207 0 0 25 0 25 25 0 8 0 mtagpl 80 107 0 0 3 0 3 3 0 8 0 mbufpl 256 523 0 0 32 0 32 32 0 8 0 bufpl 280 3859 0 133 267 0 267 267 0 8 0 anonpl 16 50334 0 33998 67 1 66 66 0 124 0 amapchunkpl 152 2524 0 2372 20 0 20 20 0 158 12 amappl16 192 1650 0 772 45 0 45 45 0 8 1 amappl15 184 3 0 1 1 0 1 1 0 8 0 amappl14 176 104 0 97 1 0 1 1 0 8 0 amappl13 168 29 0 26 1 0 1 1 0 8 0 amappl12 160 91 0 86 1 0 1 1 0 8 0 amappl11 152 54 0 39 1 0 1 1 0 8 0 amappl10 144 103 0 96 1 0 1 1 0 8 0 amappl9 136 380 0 379 1 0 1 1 0 8 0 amappl8 128 349 0 318 2 0 2 2 0 8 0 amappl7 120 197 0 184 1 0 1 1 0 8 0 amappl6 112 24 0 18 2 1 1 1 0 8 0 amappl5 104 220 0 204 1 0 1 1 0 8 0 amappl4 96 571 0 541 1 0 1 1 0 8 0 amappl3 88 182 0 176 1 0 1 1 0 8 0 amappl2 80 2197 0 2127 2 0 2 2 0 8 0 amappl1 72 18605 0 18173 23 13 10 18 0 8 0 amappl 80 1039 0 993 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 395 0 377 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 395 0 377 1 0 1 1 0 8 0 vmmpekpl 168 7047 0 7013 2 0 2 2 0 8 0 vmmpepl 168 54559 0 52529 117 6 111 114 0 357 20 vmsppl 368 394 0 377 2 0 2 2 0 8 0 pdppl 4096 797 0 756 6 0 6 6 0 8 0 pvpl 32 170155 0 150671 164 1 163 163 0 265 4 pmappl 232 394 0 377 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 284 0 4 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace sbdrop(fffffd806f691af0,fffffd806f691be8,498) at sbdrop+0x168 sys/kern/uipc_socket2.c:978 tcp_input(ffff800020db9c08,ffff800020db9c14,6,2) at tcp_input+0x3d76 sys/netinet/tcp_input.c:1725 ip_deliver(ffff800020db9c08,ffff800020db9c14,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020db9c08,ffff800020db9c14,ffff800020d984e0,0) at ip_ours+0x412 ip_input_if(ffff800020db9c08,ffff800020db9c14,4,0,ffff80000017b2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017b2a8,fffffd806d401a00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff80000017b2a8,fffffd806d401a00,0) at ether_input+0x345 sys/net/if_ethersubr.c:461 if_input_process(ffff80000017b2a8,ffff800020db9d38) at if_input_process+0x10b if_ih_input sys/net/if.c:908 [inline] if_input_process(ffff80000017b2a8,ffff800020db9d38) at if_input_process+0x10b sys/net/if.c:942 ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -10 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+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82899a40) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82899a40) at __mp_lock+0x127 sys/kern/kern_lock.c:147 pageflttrap(ffff800020ee31a0,1) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 usertrap(ffff800020ee31a0) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffbe250, count: -7