login: uvm_fault(0xffffffff828aca30, 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(0xffffffff828aca30, 0xfffffd0000000010, 0, 1) -> e pool_cache_get(ffffffff8292d3b8) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff8292d3b8) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 end trace frame: 0xffff8000236f93f0, count: 0 ddb{1}> trace pool_cache_get(ffffffff8292d3b8) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff8292d3b8) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff8292d3b8,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 ip6_fragment(fffffd806f358900,28,11,500) at ip6_fragment+0xec sys/netinet6/ip6_output.c:810 ip6_output(fffffd806f358900,0,fffffd806f690510,0,0,fffffd806f6904a0) at ip6_output+0x1ba2 sys/netinet6/ip6_output.c:736 udp6_output(fffffd806f6904a0,fffffd807ea22c00,0,0) at udp6_output+0x36a sys/netinet6/udp6_output.c:236 sosend(fffffd8064237340,0,ffff8000236f98d0,0,0,8a) at sosend+0x671 sys/kern/uipc_socket.c:555 sendit(ffff800020e37c48,6,ffff8000236f99b0,a,ffff8000236f9a90) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020e37c48,ffff8000236f9a48,ffff8000236f9a90) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff8000236f9b10) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000236f9b10) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf348702c890, count: -11 ddb{1}> show registers rdi 0xffffffff811c218a pool_cache_get+0x6a rsi 0x5ac7 __ALIGN_SIZE+0x4ac7 rbp 0xffff8000236f9330 rbx 0x7ea1cb6a393f22d4 rdx 0x5ac8 __ALIGN_SIZE+0x4ac8 rcx 0xffff800020ed6000 rax 0xffff800020ed6000 r8 0x1242 __ALIGN_SIZE+0x242 r9 0x1 r10 0x326cd90062b04297 r11 0x4e4aaaaf45533c70 r12 0xffffffff8292d3b8 mbpool r13 0 r14 0xfffffd0000000000 r15 0xfffffd807f007e00 rip 0xffffffff811c22d1 pool_cache_get+0x1b1 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff8000236f92d0 ss 0x10 pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> show proc PROC (syz-executor.0) pid=421238 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e38128,0xffffffff8292eea0 process=0xffff800020eb9b50 user=0xffff8000236f4000, vmspace=0xfffffd806e906178 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46090 45568 38788 0 7 0 syz-executor.0 *46090 421238 38788 0 7 0x4000000 syz-executor.0 20260 135237 1 0 3 0x100083 ttyin getty 36915 431594 0 0 3 0x14200 bored sosplice 53971 141535 23711 0 3 0x2 biowait syz-executor.1 38788 402038 23711 0 3 0x82 nanosleep syz-executor.0 23711 269966 9197 0 3 0x82 thrsleep syz-fuzzer 23711 363350 9197 0 3 0x4000082 nanosleep syz-fuzzer 23711 386626 9197 0 3 0x4000082 thrsleep syz-fuzzer 23711 439361 9197 0 3 0x4000082 nanosleep syz-fuzzer 23711 207371 9197 0 3 0x4000082 thrsleep syz-fuzzer 23711 119661 9197 0 3 0x4000082 thrsleep syz-fuzzer 23711 120625 9197 0 3 0x4000082 thrsleep syz-fuzzer 23711 142938 9197 0 3 0x4000082 thrsleep syz-fuzzer 23711 389531 9197 0 3 0x4000082 kqread syz-fuzzer 23711 467715 9197 0 3 0x4000082 thrsleep syz-fuzzer 9197 127697 68290 0 3 0x10008a pause ksh 68290 147239 92030 0 3 0x92 select sshd 92030 454658 1 0 3 0x80 select sshd 67785 213110 77430 74 3 0x100092 bpf pflogd 77430 262628 1 0 3 0x80 netio pflogd 51621 471696 64709 73 3 0x100090 kqread syslogd 64709 88198 1 0 3 0x100082 netio syslogd 82303 417371 1 77 3 0x100090 poll dhclient 26358 244468 1 0 3 0x80 poll dhclient 39316 250016 0 0 3 0x14200 bored smr 95735 402931 0 0 2 0x14200 zerothread 37634 415214 0 0 3 0x14200 aiodoned aiodoned 28859 140888 0 0 3 0x14200 syncer update 17845 33664 0 0 3 0x14200 cleaner cleaner 35140 434688 0 0 3 0x14200 reaper reaper 95655 350260 0 0 3 0x14200 pgdaemon pagedaemon 4964 171704 0 0 3 0x14200 bored crynlk 25511 262303 0 0 3 0x14200 bored crypto 41736 175001 0 0 3 0x40014200 acpi0 acpi0 48921 357916 0 0 3 0x40014200 idle1 55725 328873 0 0 3 0x14200 bored softnet 4676 244070 0 0 3 0x14200 bored systqmp 58634 377528 0 0 3 0x14200 bored systq 92313 426549 0 0 3 0x40014200 bored softclock 61225 63120 0 0 3 0x40014200 idle0 1 51300 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 46090 (syz-executor.0) thread 0xffff800020e37c48 (421238) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828c5528) #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_gethdr+0x4c sys/kern/uipc_mbuf.c:283 #7 ip6_fragment+0xec sys/netinet6/ip6_output.c:810 #8 ip6_output+0x1ba2 sys/netinet6/ip6_output.c:736 #9 udp6_output+0x36a sys/netinet6/udp6_output.c:236 #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 (0xffffffff82700598) #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 Process 53971 (syz-executor.1) thread 0xffff800020ddd388 (141535) exclusive rrwlock inode r = 0 (0xfffffd806819de78) #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 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358 #5 ffs_inode_alloc+0x1e2 sys/ufs/ffs/ffs_alloc.c:394 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80681ea2c0) #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 domkdirat+0x75 sys/kern/vfs_syscalls.c:3036 #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9492 6404K 6791K 78643K 11103 0 pcb 13 8K 8K 78643K 73 0 rtable 102 6K 7K 78643K 383 0 ifaddr 62 14K 14K 78643K 134 0 counters 43 33K 34K 78643K 61 0 ioctlops 0 0K 4K 78643K 1560 0 iov 0 0K 16K 78643K 25 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1373 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 14 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 491 0 sigio 0 0K 0K 78643K 3 0 proc 61 63K 83K 78643K 482 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 43 0 in_multi 46 2K 2K 78643K 96 0 ether_multi 1 0K 0K 78643K 8 0 mrt 0 0K 0K 78643K 6 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 251 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 122 39K 39K 78643K 2477 0 UVM aobj 18 2K 2K 78643K 22 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 38 0 NDP 8 0K 0K 78643K 24 0 temp 97 3865K 3929K 78643K 14351 0 kqueue 3 4K 11K 78643K 15 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 9 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 31 0 29 1 0 1 1 0 8 0 rtentry 112 59 0 25 2 0 2 2 0 8 0 unpcb 120 165 0 154 1 0 1 1 0 8 0 syncache 264 8 0 8 3 2 1 1 0 8 1 tcpqe 32 586 0 586 3 3 0 2 0 8 0 tcpcb 544 149 0 145 1 0 1 1 0 8 0 inpcb 296 442 0 432 3 1 2 2 0 8 1 nd6 48 11 0 6 1 0 1 1 0 8 0 ppxss 1136 3 0 3 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 4 0 4 1 0 1 1 0 482 1 pffrnode 88 4 0 4 1 0 1 1 0 8 1 pffrent 40 96 0 96 1 0 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 29 0 24 1 0 1 1 0 8 0 pfstitem 24 37 0 10 1 0 1 1 0 8 0 pfstkey 112 41 0 14 1 0 1 1 0 8 0 pfstate 328 39 0 12 3 0 3 3 0 8 0 pfrule 1360 39 0 28 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 265 0 118 13 2 11 12 0 8 0 art_table 32 266 0 118 2 0 2 2 0 8 0 art_node 16 57 0 29 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 13 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 19 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1996 0 590 89 0 89 89 0 8 0 ffsino 272 1996 0 590 96 1 95 95 0 8 0 nchpl 144 3195 0 1583 60 0 60 60 0 8 0 uvmvnodes 72 2156 0 0 40 0 40 40 0 8 0 vnodes 208 2156 0 0 114 0 114 114 0 8 0 namei 1024 8473 0 8472 4 3 1 1 0 8 0 percpumem 16 41 0 9 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 3 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 10 0 6 1 0 1 1 0 8 0 scxspl 192 8560 0 8559 11 10 1 7 0 8 0 plimitpl 152 36 0 28 1 0 1 1 0 8 0 sigapl 424 708 0 676 4 0 4 4 0 8 0 futexpl 56 6583 0 6583 3 2 1 1 0 8 1 knotepl 112 71 0 52 1 0 1 1 0 8 0 kqueuepl 144 56 0 53 1 0 1 1 0 8 0 pipepl 304 117 0 107 2 1 1 2 0 8 0 fdescpl 496 692 0 676 3 0 3 3 0 8 0 filepl 152 3917 0 3815 7 2 5 5 0 8 1 lockfpl 104 94 0 93 1 0 1 1 0 8 0 lockfspl 48 35 0 34 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 25 0 14 1 0 1 1 0 8 0 ucredpl 96 278 0 268 1 0 1 1 0 8 0 zombiepl 144 676 0 676 2 1 1 1 0 8 1 processpl 992 708 0 676 7 2 5 5 0 8 0 procpl 624 1683 0 1641 4 0 4 4 0 8 0 sosppl 128 4 0 4 2 2 0 1 0 8 0 sockpl 400 640 0 617 6 2 4 4 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 283 0 0 35 0 35 35 0 8 0 mtagpl 96 31 0 0 1 0 1 1 0 8 0 mbufpl 256 344 0 0 20 0 20 20 0 8 0 bufpl 280 4255 0 133 295 0 295 295 0 8 0 anonpl 16 82940 0 65665 92 5 87 87 0 124 16 amapchunkpl 152 3915 0 3751 14 3 11 12 0 158 2 amappl16 192 2955 0 2041 54 0 54 54 0 8 8 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 29 0 21 1 0 1 1 0 8 0 amappl13 168 487 0 481 1 0 1 1 0 8 0 amappl12 160 238 0 233 1 0 1 1 0 8 0 amappl11 152 51 0 36 1 0 1 1 0 8 0 amappl10 144 27 0 20 1 0 1 1 0 8 0 amappl9 136 378 0 376 1 0 1 1 0 8 0 amappl8 128 353 0 323 2 0 2 2 0 8 0 amappl7 120 117 0 107 1 0 1 1 0 8 0 amappl6 112 24 0 22 1 0 1 1 0 8 0 amappl5 104 614 0 595 1 0 1 1 0 8 0 amappl4 96 723 0 694 1 0 1 1 0 8 0 amappl3 88 132 0 126 1 0 1 1 0 8 0 amappl2 80 4865 0 4792 2 0 2 2 0 8 0 amappl1 72 29065 0 28626 24 14 10 18 0 8 0 amappl 80 1950 0 1901 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 21 0 4 1 0 1 1 0 8 0 uaddrrnd 24 695 0 676 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 695 0 676 1 0 1 1 0 8 0 vmmpekpl 168 8747 0 8707 2 0 2 2 0 8 0 vmmpepl 168 94851 0 92759 139 34 105 116 0 357 11 vmsppl 368 694 0 676 2 0 2 2 0 8 0 pdppl 4096 1397 0 1355 9 3 6 6 0 8 0 pvpl 32 256538 0 236077 210 10 200 200 0 265 32 pmappl 232 694 0 676 3 1 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{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8275aff0) 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(ffffffff828c5320) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c5320) at __mp_lock+0x127 sys/kern/kern_lock.c:147 intr_handler(ffff800020e02d70,ffff80000004a400) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x19f end of kernel end trace frame: 0x7f7ffffc4960, count: -6 ddb{0}> machine ddbcpu 1 Stopped at pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{1}> trace pool_cache_get(ffffffff8292d3b8) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff8292d3b8) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff8292d3b8,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 ip6_fragment(fffffd806f358900,28,11,500) at ip6_fragment+0xec sys/netinet6/ip6_output.c:810 ip6_output(fffffd806f358900,0,fffffd806f690510,0,0,fffffd806f6904a0) at ip6_output+0x1ba2 sys/netinet6/ip6_output.c:736 udp6_output(fffffd806f6904a0,fffffd807ea22c00,0,0) at udp6_output+0x36a sys/netinet6/udp6_output.c:236 sosend(fffffd8064237340,0,ffff8000236f98d0,0,0,8a) at sosend+0x671 sys/kern/uipc_socket.c:555 sendit(ffff800020e37c48,6,ffff8000236f99b0,a,ffff8000236f9a90) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020e37c48,ffff8000236f9a48,ffff8000236f9a90) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff8000236f9b10) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000236f9b10) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf348702c890, count: -11