uvm_fault(0xffffffff828a8540, 0xfffffd0000000010, 0, 1) -> e kernel: page fault trap, code=0 Stopped at pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff828a8540, 0xfffffd0000000010, 0, 1) -> e pool_cache_get(ffffffff828db8a8) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828db8a8) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 end trace frame: 0xffff800022b90c20, count: 0 ddb{1}> trace pool_cache_get(ffffffff828db8a8) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828db8a8) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff828db8a8,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806d5f2e00,6554,5a0,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806d5f2e00,6554,5a0,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 ip_fragment(fffffd806d5f2e00,ffff80000017b2a8,5b4) at ip_fragment+0x324 ip_output(fffffd806d5f2e00,fffffd8068b08c00,fffffd806f688888,0,0,fffffd806f688818) at ip_output+0xfd7 sys/netinet/ip_output.c:499 udp_output(fffffd806f688818,fffffd806d5f2500,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1017 sosend(fffffd8068806658,0,ffff800022b91040,0,0,0) at sosend+0x671 sys/kern/uipc_socket.c:555 sendit(ffff800020ebcd60,6,ffff800022b91120,0,ffff800022b91200) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020ebcd60,ffff800022b911b8,ffff800022b91200) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff800022b91280) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022b91280) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xffa6643a3a0, count: -11 ddb{1}> show registers rdi 0xffffffff81c6ee8a pool_cache_get+0x6a rsi 0x614a __ALIGN_SIZE+0x514a rbp 0xffff800022b90b60 rbx 0xbd81359abf0c8b44 rdx 0x614b __ALIGN_SIZE+0x514b rcx 0xffff800022ce5000 rax 0xffff800022ce5000 r8 0xffffffff819dfa0a in_delayed_cksum+0xaa r9 0x1 r10 0x3 r11 0xd85e21fcab3f7f25 r12 0xffffffff828db8a8 mbpool r13 0 r14 0xfffffd0000000000 r15 0xfffffd807f008e80 rip 0xffffffff81c6efd1 pool_cache_get+0x1b1 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800022b90b00 ss 0x10 pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> show proc PROC (syz-executor.0) pid=474346 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e04608,0xffffffff828d68b8 process=0xffff80002295c7f8 user=0xffff800022b8c000, vmspace=0xfffffd807efff2e0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 75110 202922 83960 0 2 0 syz-executor.0 *75110 474346 83960 0 7 0x4000000 syz-executor.0 12796 492402 91494 0 2 0 syz-executor.1 12796 32331 91494 0 7 0x4000000 syz-executor.1 91494 376210 18960 0 3 0x82 nanosleep syz-executor.1 38859 513282 0 0 3 0x14280 nfsidl nfsio 3281 409610 0 0 3 0x14280 nfsidl nfsio 60110 265971 0 0 3 0x14280 nfsidl nfsio 51741 277990 0 0 3 0x14280 nfsidl nfsio 35743 179436 0 0 3 0x14280 nfsidl nfsio 73682 133194 0 0 3 0x14280 nfsidl nfsio 47265 6794 0 0 3 0x14280 nfsidl nfsio 81524 3471 0 0 3 0x14280 nfsidl nfsio 81573 470532 0 0 3 0x14280 nfsidl nfsio 30586 7120 0 0 3 0x14280 nfsidl nfsio 10134 362358 0 0 3 0x14280 nfsidl nfsio 10640 82375 0 0 3 0x14280 nfsidl nfsio 58080 373450 0 0 3 0x14280 nfsidl nfsio 61882 282744 0 0 3 0x14280 nfsidl nfsio 69920 158940 0 0 3 0x14280 nfsidl nfsio 3687 67593 0 0 3 0x14280 nfsidl nfsio 68701 356417 0 0 3 0x14280 nfsidl nfsio 41274 21355 0 0 3 0x14280 nfsidl nfsio 97229 74766 0 0 3 0x14280 nfsidl nfsio 13287 17489 0 0 3 0x14280 nfsidl nfsio 83960 91681 18960 0 3 0x82 nanosleep syz-executor.0 70368 363261 0 0 3 0x14200 bored sosplice 18960 76620 57639 0 3 0x82 thrsleep syz-fuzzer 18960 328002 57639 0 3 0x4000082 thrsleep syz-fuzzer 18960 511992 57639 0 3 0x4000082 thrsleep syz-fuzzer 18960 463653 57639 0 3 0x4000082 kqread syz-fuzzer 18960 143538 57639 0 3 0x4000082 thrsleep syz-fuzzer 18960 103544 57639 0 3 0x4000082 thrsleep syz-fuzzer 18960 353137 57639 0 3 0x4000082 thrsleep syz-fuzzer 18960 128636 57639 0 3 0x4000082 thrsleep syz-fuzzer 18960 262874 57639 0 3 0x4000082 thrsleep syz-fuzzer 18960 347296 57639 0 3 0x4000082 thrsleep syz-fuzzer 18960 35112 57639 0 3 0x4000082 thrsleep syz-fuzzer 57639 368912 42171 0 3 0x10008a pause ksh 42171 252568 26693 0 3 0x92 select sshd 55409 172956 1 0 3 0x100083 ttyin getty 26693 23762 1 0 3 0x80 select sshd 87094 416532 39393 74 3 0x100092 bpf pflogd 39393 119197 1 0 3 0x80 netio pflogd 87289 414544 56195 73 3 0x100090 kqread syslogd 56195 293858 1 0 3 0x100082 netio syslogd 43753 523415 1 77 3 0x100090 poll dhclient 84884 131159 1 0 3 0x80 poll dhclient 48089 16406 0 0 3 0x14200 bored smr 46948 156950 0 0 2 0x14200 zerothread 59950 480500 0 0 3 0x14200 aiodoned aiodoned 96411 454788 0 0 3 0x14200 syncer update 69958 476372 0 0 3 0x14200 cleaner cleaner 98899 567 0 0 3 0x14200 reaper reaper 28680 495267 0 0 3 0x14200 pgdaemon pagedaemon 24537 61987 0 0 3 0x14200 bored crynlk 88017 65494 0 0 3 0x14200 bored crypto 93520 371804 0 0 3 0x40014200 acpi0 acpi0 10570 368354 0 0 3 0x40014200 idle1 46631 400410 0 0 3 0x14200 bored softnet 14620 284335 0 0 3 0x14200 bored systqmp 52783 357889 0 0 3 0x14200 bored systq 50881 515086 0 0 3 0x40014200 bored softclock 42820 439749 0 0 3 0x40014200 idle0 1 159180 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 75110 (syz-executor.0) thread 0xffff800020ebcd60 (474346) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828dd5e0) #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 ip_fragment+0x324 #8 ip_output+0xfd7 sys/netinet/ip_output.c:499 #9 udp_output+0x5af sys/netinet/udp_usrreq.c:1017 #10 sosend+0x671 sys/kern/uipc_socket.c:555 #11 sendit+0x52b sys/kern/uipc_syscalls.c:657 #12 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 #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 rwlock netlock r = 0 (0xffffffff827657c8) #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 sendit+0x52b sys/kern/uipc_syscalls.c:657 #4 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9514 6422K 6793K 78643K 11300 0 pcb 13 8K 8K 78643K 88 0 rtable 103 7K 9K 78643K 509 0 ifaddr 80 16K 17K 78643K 162 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 53 0 ioctlops 0 0K 4K 78643K 1600 0 iov 0 0K 16K 78643K 59 0 mount 1 1K 1K 78643K 1 0 vnodes 1231 77K 78K 78643K 1498 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 16 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 92 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 665 0 sigio 0 0K 0K 78643K 4 0 proc 64 63K 95K 78643K 581 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 25 0 in_multi 75 4K 4K 78643K 222 0 ether_multi 1 0K 0K 78643K 8 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 261 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 132 55K 56K 78643K 3089 0 UVM aobj 27 4K 4K 78643K 31 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 67 0 NDP 13 0K 0K 78643K 39 0 temp 122 3867K 3970K 78643K 11687 0 kqueue 3 4K 12K 78643K 33 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 10 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 49 0 47 1 0 1 1 0 8 0 rtentry 112 113 0 80 2 0 2 2 0 8 0 unpcb 120 604 0 592 1 0 1 1 0 8 0 syncache 264 7 0 7 3 2 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 144 0 144 1 1 0 1 0 8 0 tcpcb 544 186 0 182 1 0 1 1 0 8 0 inpcb 296 642 0 634 3 1 2 2 0 8 1 nd6 48 39 0 35 1 0 1 1 0 8 0 pkpcb 40 10 0 10 2 1 1 1 0 8 1 pffrag 232 3 0 3 2 1 1 1 0 482 1 pffrnode 88 3 0 3 2 1 1 1 0 8 1 pffrent 40 52 0 52 3 2 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 33 0 25 2 1 1 2 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfqueue 264 4 0 2 1 0 1 1 0 8 0 pfstitem 24 39 0 20 1 0 1 1 0 8 0 pfstkey 112 39 0 20 1 0 1 1 0 8 0 pfstate 328 39 0 20 3 0 3 3 0 8 0 pfrule 1360 33 0 27 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 433 0 293 13 0 13 13 0 8 3 art_table 32 435 0 293 2 0 2 2 0 8 0 art_node 16 112 0 84 1 0 1 1 0 8 0 sysvmsgpl 40 32 0 21 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 84 0 74 1 0 1 1 0 8 0 shmpl 112 28 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2185 0 783 89 0 89 89 0 8 0 ffsino 272 2185 0 783 96 1 95 95 0 8 0 nchpl 144 3684 0 2085 60 0 60 60 0 8 0 uvmvnodes 72 2446 0 0 45 0 45 45 0 8 0 vnodes 208 2446 0 0 129 0 129 129 0 8 0 namei 1024 9983 0 9983 2 1 1 1 0 8 1 percpumem 16 37 0 5 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 7 0 4 2 1 1 1 0 8 0 pfiaddrpl 120 21 0 15 1 0 1 1 0 8 0 scxspl 192 9383 0 9383 8 7 1 7 0 8 1 plimitpl 152 60 0 52 1 0 1 1 0 8 0 sigapl 424 895 0 842 6 0 6 6 0 8 0 futexpl 56 8641 0 8641 1 0 1 1 0 8 1 knotepl 112 130 0 111 1 0 1 1 0 8 0 kqueuepl 144 76 0 73 1 0 1 1 0 8 0 pipepl 304 158 0 148 3 2 1 2 0 8 0 fdescpl 496 859 0 842 3 0 3 3 0 8 0 filepl 152 5417 0 5312 7 2 5 6 0 8 0 lockfpl 104 140 0 138 1 0 1 1 0 8 0 lockfspl 48 43 0 41 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 30 0 19 1 0 1 1 0 8 0 ucredpl 96 443 0 434 1 0 1 1 0 8 0 zombiepl 144 842 0 842 2 1 1 1 0 8 1 processpl 992 895 0 842 8 1 7 7 0 8 0 procpl 624 2232 0 2167 6 0 6 6 0 8 1 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 8 0 8 4 3 1 1 0 8 1 sockpl 400 1305 0 1283 6 2 4 5 0 8 1 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 159 0 0 19 0 19 19 0 8 0 mtagpl 96 22 0 0 1 0 1 1 0 8 0 mbufpl 256 510 0 0 30 0 30 30 0 8 0 bufpl 280 4249 0 135 294 0 294 294 0 8 0 anonpl 16 91299 0 78437 94 10 84 84 0 124 15 amapchunkpl 152 4742 0 4583 8 0 8 8 0 158 0 amappl16 192 3986 0 3093 64 11 53 57 0 8 8 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 340 0 336 1 0 1 1 0 8 0 amappl13 168 255 0 250 1 0 1 1 0 8 0 amappl12 160 23 0 18 1 0 1 1 0 8 0 amappl11 152 70 0 51 1 0 1 1 0 8 0 amappl10 144 38 0 31 1 0 1 1 0 8 0 amappl9 136 470 0 469 1 0 1 1 0 8 0 amappl8 128 461 0 431 2 0 2 2 0 8 0 amappl7 120 132 0 118 1 0 1 1 0 8 0 amappl6 112 34 0 25 1 0 1 1 0 8 0 amappl5 104 757 0 740 1 0 1 1 0 8 0 amappl4 96 732 0 700 1 0 1 1 0 8 0 amappl3 88 425 0 417 1 0 1 1 0 8 0 amappl2 80 5765 0 5690 2 0 2 2 0 8 0 amappl1 72 27992 0 27527 23 13 10 18 0 8 0 amappl 80 2501 0 2452 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 30 0 4 1 0 1 1 0 8 0 uaddrrnd 24 866 0 846 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 866 0 846 1 0 1 1 0 8 0 vmmpekpl 168 10745 0 10696 3 0 3 3 0 8 0 vmmpepl 168 111620 0 109434 152 27 125 125 0 357 29 vmsppl 368 865 0 846 2 0 2 2 0 8 0 pdppl 4096 1739 0 1695 7 1 6 6 0 8 0 pvpl 32 279275 0 263168 215 16 199 199 0 265 38 pmappl 232 865 0 846 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 286 0 8 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82753ff0) 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(ffffffff828dd3d8) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828dd3d8) at __mp_lock+0x12e sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff828dd3d8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828dd3d8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 sys_futex(ffff800020e04608,ffff800022b8b9a0,ffff800022b8b9f0) at sys_futex+0xf6 sys/kern/sys_futex.c:109 syscall(ffff800022b8ba70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022b8ba70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfc762ccad80, count: -10 ddb{0}> machine ddbcpu 1 Stopped at pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> trace pool_cache_get(ffffffff828db8a8) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828db8a8) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff828db8a8,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806d5f2e00,6554,5a0,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806d5f2e00,6554,5a0,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 ip_fragment(fffffd806d5f2e00,ffff80000017b2a8,5b4) at ip_fragment+0x324 ip_output(fffffd806d5f2e00,fffffd8068b08c00,fffffd806f688888,0,0,fffffd806f688818) at ip_output+0xfd7 sys/netinet/ip_output.c:499 udp_output(fffffd806f688818,fffffd806d5f2500,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1017 sosend(fffffd8068806658,0,ffff800022b91040,0,0,0) at sosend+0x671 sys/kern/uipc_socket.c:555 sendit(ffff800020ebcd60,6,ffff800022b91120,0,ffff800022b91200) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020ebcd60,ffff800022b911b8,ffff800022b91200) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff800022b91280) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022b91280) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xffa6643a3a0, count: -11