login: uvm_fault(0xffffffff827decb0, 0xfffffd0000000010, 0, 1) -> e kernel: page fault trap, code=0 Stopped at pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff827decb0, 0xfffffd0000000010, 0, 1) -> e pool_cache_get(ffffffff828b7640) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828b7640) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 end trace frame: 0xffff800020e23c80, count: 0 ddb{0}> trace pool_cache_get(ffffffff828b7640) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828b7640) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff828b7640,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd80644ff200,1584,244,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd80644ff200,1584,244,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ad9aa0) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806ead9968,9,fffffd8067432000,0,0,ffff800020e4dc40) at tcp_usrreq+0xa55 sosend(fffffd806ead9968,0,ffff800020e24118,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e4dc40,4,ffff800020e24118,0,ffff800020e24200) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e4dc40,ffff800020e241b0,ffff800020e24200) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e24280) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e24280) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcf870, count: -10 ddb{0}> show registers rdi 0 rsi 0x7 rbp 0xffff800020e23bc0 rbx 0x4eef298d80cb6c84 rdx 0x244 rcx 0 rax 0 r8 0xffffffff81c07b1a tcp_output+0xbea r9 0x5 r10 0x3 r11 0x52d4cdeebd9c7982 r12 0xffffffff828b7640 mbpool r13 0 r14 0xfffffd0000000000 r15 0xfffffd807f009f00 rip 0xffffffff81b8c7c1 pool_cache_get+0x1b1 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800020e23b60 ss 0x10 pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (sshd) pid=214069 stat=onproc flags process=12 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e4e390,0xffff800020e4e130 process=0xffff8000ffffe7d8 user=0xffff800020e1f000, vmspace=0xfffffd806e8ee2e8 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 39536 254856 21854 0 3 0x80 nanosleep syz-executor.0 39536 483266 21854 0 3 0x4000080 netcon syz-executor.0 76424 323891 1 0 3 0x100083 ttyin getty 48701 143697 0 0 3 0x14200 bored sosplice 53255 386205 64831 0 3 0x2 biowait syz-executor.1 21854 343510 64831 0 3 0x82 nanosleep syz-executor.0 64831 451222 62708 0 3 0x82 thrsleep syz-fuzzer 64831 406463 62708 0 3 0x4000082 nanosleep syz-fuzzer 64831 33333 62708 0 3 0x4000082 thrsleep syz-fuzzer 64831 15853 62708 0 3 0x4000082 thrsleep syz-fuzzer 64831 187362 62708 0 3 0x4000082 kqread syz-fuzzer 64831 27992 62708 0 3 0x4000082 thrsleep syz-fuzzer 64831 100950 62708 0 3 0x4000082 thrsleep syz-fuzzer 64831 358441 62708 0 3 0x4000082 thrsleep syz-fuzzer 64831 168533 62708 0 3 0x4000082 thrsleep syz-fuzzer 64831 768 62708 0 3 0x4000082 nanosleep syz-fuzzer 62708 437365 92875 0 3 0x10008a pause ksh *92875 214069 94623 0 7 0x12 sshd 94623 407150 1 0 3 0x80 select sshd 94007 182386 57251 74 3 0x100092 bpf pflogd 57251 214021 1 0 3 0x80 netio pflogd 82762 241895 83344 73 3 0x100090 kqread syslogd 83344 362654 1 0 3 0x100082 netio syslogd 61312 188607 1 77 3 0x100090 poll dhclient 92382 387519 1 0 3 0x80 poll dhclient 32288 53958 0 0 3 0x14200 bored smr 94746 376895 0 0 3 0x14200 pgzero zerothread 97068 87574 0 0 3 0x14200 aiodoned aiodoned 53732 488318 0 0 3 0x14200 syncer update 55580 35203 0 0 3 0x14200 cleaner cleaner 29530 362710 0 0 3 0x14200 reaper reaper 68822 508113 0 0 3 0x14200 pgdaemon pagedaemon 84449 156053 0 0 3 0x14200 bored crynlk 38083 221955 0 0 3 0x14200 bored crypto 47106 217006 0 0 3 0x40014200 acpi0 acpi0 56522 88425 0 0 7 0x40014200 idle1 59693 77719 0 0 3 0x14200 bored softnet 69644 218135 0 0 3 0x14200 bored systqmp 75838 484716 0 0 3 0x14200 bored systq 10862 285285 0 0 3 0x40014200 bored softclock 96342 320783 0 0 3 0x40014200 idle0 1 492444 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 53255 (syz-executor.1) thread 0xffff800020dddd48 (386205) exclusive rrwlock inode r = 0 (0xfffffd806edaf6f8) #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 (0xfffffd806874e5f0) #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 92875 (sshd) thread 0xffff800020e4dc40 (214069) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829156c0) #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 pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] #4 pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 #5 pool_get+0x91 sys/kern/subr_pool.c:572 #6 m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] #6 m_copym+0x174 sys/kern/uipc_mbuf.c:667 #7 tcp_output+0x15ba sys/netinet/tcp_output.c:673 #8 tcp_usrreq+0xa55 #9 sosend+0x671 sys/kern/uipc_socket.c:555 #10 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #11 sys_write+0x83 sys/kern/sys_generic.c:285 #12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #13 Xsyscall+0x128 exclusive rwlock netlock r = 0 (0xffffffff82773eb8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sosend+0x559 sys/kern/uipc_socket.c:543 #3 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #4 sys_write+0x83 sys/kern/sys_generic.c:285 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #6 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9526 6477K 6662K 78643K 10900 0 pcb 13 8K 8K 78643K 36 0 rtable 119 6K 6K 78643K 318 0 ifaddr 85 17K 17K 78643K 129 0 counters 43 33K 34K 78643K 57 0 ioctlops 0 0K 4K 78643K 1503 0 iov 0 0K 16K 78643K 24 0 mount 1 1K 1K 78643K 1 0 vnodes 1226 77K 77K 78643K 1351 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 10 0K 0K 78643K 12 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 252 0 sigio 0 0K 0K 78643K 10 0 proc 62 63K 95K 78643K 491 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 18 0 in_multi 80 3K 3K 78643K 86 0 ether_multi 1 0K 0K 78643K 3 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 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 237 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 116 38K 38K 78643K 1776 0 UVM aobj 17 2K 2K 78643K 17 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 17 0 NDP 12 0K 0K 78643K 23 0 temp 110 3866K 3930K 78643K 16464 0 kqueue 3 4K 12K 78643K 28 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 9 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 47 0 45 1 0 1 1 0 8 0 rtentry 112 53 0 8 2 0 2 2 0 8 0 unpcb 120 217 0 207 2 1 1 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 429 0 429 1 1 0 1 0 8 0 tcpcb 544 86 0 80 1 0 1 1 0 8 0 inpcb 296 602 0 592 4 2 2 2 0 8 1 rttmr 72 3 0 2 2 1 1 1 0 8 0 nd6 48 6 0 0 1 0 1 1 0 8 0 pffrag 232 2 0 2 2 1 1 1 0 482 1 pffrnode 88 2 0 2 2 1 1 1 0 8 1 pffrent 40 90 0 90 2 1 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 5 0 1 1 0 1 1 0 8 0 pfstitem 24 15 0 6 1 0 1 1 0 8 0 pfstkey 112 15 0 6 1 0 1 1 0 8 0 pfstate 328 15 0 6 2 0 2 2 0 8 0 pfrule 1360 26 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 223 0 4 14 0 14 14 0 8 0 art_table 32 224 0 4 2 0 2 2 0 8 0 art_node 16 52 0 12 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 5 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 14 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1764 0 359 89 0 89 89 0 8 0 ffsino 272 1764 0 359 95 1 94 94 0 8 0 nchpl 144 2276 0 668 60 0 60 60 0 8 0 uvmvnodes 72 1887 0 0 35 0 35 35 0 8 0 vnodes 208 1887 0 0 100 0 100 100 0 8 0 namei 1024 6237 0 6237 4 3 1 1 0 8 1 percpumem 16 39 0 7 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 5 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 4 0 0 1 0 1 1 0 8 0 scxspl 192 6796 0 6795 9 8 1 7 0 8 0 plimitpl 152 39 0 31 1 0 1 1 0 8 0 sigapl 424 469 0 437 4 0 4 4 0 8 0 futexpl 56 3669 0 3669 3 2 1 1 0 8 1 knotepl 112 93 0 74 1 0 1 1 0 8 0 kqueuepl 144 34 0 31 1 0 1 1 0 8 0 pipepl 304 116 0 106 2 0 2 2 0 8 1 fdescpl 496 453 0 437 3 0 3 3 0 8 0 filepl 152 2842 0 2738 8 3 5 7 0 8 1 lockfpl 104 62 0 61 1 0 1 1 0 8 0 lockfspl 48 24 0 23 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 19 0 8 1 0 1 1 0 8 0 ucredpl 96 261 0 252 1 0 1 1 0 8 0 zombiepl 144 437 0 437 2 1 1 1 0 8 1 processpl 992 469 0 437 6 1 5 5 0 8 0 procpl 624 1001 0 959 4 0 4 4 0 8 0 sosppl 128 3 0 3 1 1 0 1 0 8 0 sockpl 400 867 0 845 11 7 4 7 0 8 1 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 186 0 0 23 0 23 23 0 8 0 mtagpl 96 12 0 0 1 0 1 1 0 8 0 mbufpl 256 477 0 0 29 0 29 29 0 8 0 bufpl 280 3874 0 132 268 0 268 268 0 8 0 anonpl 16 55425 0 38864 72 2 70 70 0 124 2 amapchunkpl 152 2603 0 2456 20 13 7 20 0 158 0 amappl16 192 2162 0 1268 51 3 48 48 0 8 3 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 136 0 128 1 0 1 1 0 8 0 amappl13 168 29 0 26 1 0 1 1 0 8 0 amappl12 160 5 0 3 2 1 1 1 0 8 0 amappl11 152 62 0 46 1 0 1 1 0 8 0 amappl10 144 23 0 17 1 0 1 1 0 8 0 amappl9 136 396 0 394 1 0 1 1 0 8 0 amappl8 128 336 0 310 1 0 1 1 0 8 0 amappl7 120 128 0 115 1 0 1 1 0 8 0 amappl6 112 28 0 23 1 0 1 1 0 8 0 amappl5 104 349 0 333 1 0 1 1 0 8 0 amappl4 96 502 0 470 1 0 1 1 0 8 0 amappl3 88 218 0 211 1 0 1 1 0 8 0 amappl2 80 2685 0 2616 2 0 2 2 0 8 0 amappl1 72 20121 0 19681 23 13 10 18 0 8 0 amappl 80 1259 0 1213 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 16 0 0 1 0 1 1 0 8 0 uaddrrnd 24 458 0 438 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 458 0 438 1 0 1 1 0 8 0 vmmpekpl 168 7454 0 7414 2 0 2 2 0 8 0 vmmpepl 168 62573 0 60502 123 24 99 110 0 357 4 vmsppl 368 457 0 438 2 0 2 2 0 8 0 pdppl 4096 923 0 880 7 1 6 6 0 8 0 pvpl 32 183716 0 164021 180 9 171 171 0 265 7 pmappl 232 457 0 438 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 292 0 14 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pool_cache_get(ffffffff828b7640) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828b7640) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff828b7640,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd80644ff200,1584,244,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd80644ff200,1584,244,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ad9aa0) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806ead9968,9,fffffd8067432000,0,0,ffff800020e4dc40) at tcp_usrreq+0xa55 sosend(fffffd806ead9968,0,ffff800020e24118,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e4dc40,4,ffff800020e24118,0,ffff800020e24200) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e4dc40,ffff800020e241b0,ffff800020e24200) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e24280) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e24280) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcf870, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d70ff0) 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 acpicpu_idle() at acpicpu_idle+0x331 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffff800020d70ff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5