uvm_fault(0xffffffff828be398, 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(0xffffffff828be398, 0xfffffd0000000010, 0, 1) -> e pool_cache_get(ffffffff828cdee0) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828cdee0) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 end trace frame: 0xffff800020e24890, count: 0 ddb{0}> trace pool_cache_get(ffffffff828cdee0) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828cdee0) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff828cdee0,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ada980) at tcp_output+0x14e6 tcp_usrreq(fffffd806ead9c88,9,fffffd807f01f600,0,0,ffff800020e4d010) at tcp_usrreq+0xa55 sosend(fffffd806ead9c88,0,ffff800020e24cc8,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e4d010,4,ffff800020e24cc8,0,ffff800020e24db0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e4d010,ffff800020e24d60,ffff800020e24db0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e24e30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e24e30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffb8950, count: -10 ddb{0}> show registers rdi 0 rsi 0x7 rbp 0xffff800020e247d0 rbx 0x17c171718416a8ed rdx 0xffff800020e4d010 rcx 0 rax 0 r8 0xffffffff81a1f47a tcp_output+0xbea r9 0x5 r10 0x3 r11 0xcc6555c9e152d952 r12 0xffffffff828cdee0 mbpool r13 0 r14 0xfffffd0000000000 r15 0xfffffd807f009d00 rip 0xffffffff8215da71 pool_cache_get+0x1b1 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800020e24770 ss 0x10 pool_cache_get+0x1b1: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (sshd) pid=399408 stat=onproc flags process=12 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e4d280,0xffff800020e4dec0 process=0xffff8000ffffe7d8 user=0xffff800020e1f000, vmspace=0xfffffd806e8fb178 estcpu=0, cpticks=1, pctcpu=0.4 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 4055 111944 3334 0 2 0 syz-executor.1 3334 148031 35073 0 3 0x82 nanosleep syz-executor.1 99284 506764 35073 0 3 0x82 piperd syz-executor.0 35073 54977 8098 0 3 0x82 thrsleep syz-fuzzer 35073 22049 8098 0 3 0x4000082 nanosleep syz-fuzzer 35073 395263 8098 0 3 0x4000082 thrsleep syz-fuzzer 35073 206116 8098 0 3 0x4000082 thrsleep syz-fuzzer 35073 512030 8098 0 3 0x4000082 kqread syz-fuzzer 35073 359209 8098 0 2 0x4000002 syz-fuzzer 35073 490977 8098 0 3 0x4000082 thrsleep syz-fuzzer 35073 520577 8098 0 3 0x4000082 thrsleep syz-fuzzer 35073 380440 8098 0 3 0x4000082 thrsleep syz-fuzzer 35073 4895 8098 0 3 0x4000082 thrsleep syz-fuzzer 8098 508437 66397 0 3 0x10008a pause ksh *66397 399408 13082 0 7 0x12 sshd 17850 475399 1 0 3 0x100083 ttyin getty 13082 483069 1 0 3 0x80 select sshd 18252 395395 34528 74 3 0x100092 bpf pflogd 34528 235078 1 0 3 0x80 netio pflogd 44786 481670 50184 73 3 0x100090 kqread syslogd 50184 391752 1 0 3 0x100082 netio syslogd 78651 502790 1 77 3 0x100090 poll dhclient 36184 107315 1 0 3 0x80 poll dhclient 5610 478449 0 0 3 0x14200 bored smr 47725 438725 0 0 2 0x14200 zerothread 95777 187297 0 0 3 0x14200 aiodoned aiodoned 85078 160381 0 0 3 0x14200 syncer update 61485 333580 0 0 3 0x14200 cleaner cleaner 95433 74301 0 0 3 0x14200 reaper reaper 3837 510919 0 0 3 0x14200 pgdaemon pagedaemon 21356 308041 0 0 3 0x14200 bored crynlk 61489 184138 0 0 3 0x14200 bored crypto 81576 27518 0 0 3 0x40014200 acpi0 acpi0 99556 465853 0 0 3 0x40014200 idle1 55470 195817 0 0 7 0x14200 softnet 34706 187973 0 0 3 0x14200 bored systqmp 83969 129100 0 0 3 0x14200 bored systq 30220 448108 0 0 3 0x40014200 bored softclock 57864 219594 0 0 3 0x40014200 idle0 1 457139 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 66397 (sshd) thread 0xffff800020e4d010 (399408) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828c71f0) #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 tcp_output+0x14e6 #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 (0xffffffff82776a48) #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 Process 55470 (softnet) thread 0xffff800020d88000 (195817) 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 9487 6412K 6665K 78643K 10709 0 pcb 13 8K 8K 78643K 33 0 rtable 110 4K 4K 78643K 281 0 ifaddr 57 12K 13K 78643K 101 0 counters 43 33K 34K 78643K 55 0 ioctlops 0 0K 4K 78643K 1490 0 iov 0 0K 16K 78643K 15 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1278 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 32 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 187 0 sigio 0 0K 0K 78643K 2 0 proc 60 63K 95K 78643K 490 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 11 0 in_multi 46 2K 2K 78643K 97 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 254 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 118 23K 32K 78643K 1531 0 UVM aobj 15 2K 2K 78643K 15 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 10 0 NDP 10 0K 0K 78643K 29 0 temp 80 3861K 3925K 78643K 3617 0 kqueue 3 4K 12K 78643K 11 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 10 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 25 0 23 1 0 1 1 0 8 0 rtentry 112 74 0 29 2 0 2 2 0 8 0 unpcb 120 159 0 149 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 37 0 37 1 1 0 1 0 8 0 tcpcb 544 254 0 250 1 0 1 1 0 8 0 inpcb 296 377 0 370 2 0 2 2 0 8 1 nd6 48 18 0 12 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 4 0 3 1 0 1 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 2 0 2 1 1 0 1 0 8 0 pfstitem 24 14 0 0 1 0 1 1 0 8 0 pfstkey 112 14 0 0 1 0 1 1 0 8 0 pfstate 328 14 0 0 2 0 2 2 0 8 0 pfrule 1360 25 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 268 0 70 13 0 13 13 0 8 0 art_table 32 269 0 70 2 0 2 2 0 8 0 art_node 16 73 0 32 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 8 1 0 1 1 0 8 1 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 26 0 16 1 0 1 1 0 8 0 shmpl 112 12 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1600 0 196 89 0 89 89 0 8 0 ffsino 272 1600 0 196 94 0 94 94 0 8 0 nchpl 144 2029 0 434 60 0 60 60 0 8 0 uvmvnodes 72 1689 0 0 31 0 31 31 0 8 0 vnodes 208 1689 0 0 89 0 89 89 0 8 0 namei 1024 5483 0 5483 1 0 1 1 0 8 1 percpumem 16 38 0 6 1 0 1 1 0 8 0 scxspl 192 5993 0 5993 8 1 7 7 0 8 7 plimitpl 152 24 0 16 1 0 1 1 0 8 0 sigapl 424 399 0 368 4 0 4 4 0 8 0 futexpl 56 2417 0 2417 1 0 1 1 0 8 1 knotepl 112 84 0 65 1 0 1 1 0 8 0 kqueuepl 144 26 0 24 1 0 1 1 0 8 0 pipepl 304 107 0 97 2 1 1 2 0 8 0 fdescpl 496 384 0 368 3 0 3 3 0 8 0 filepl 152 2120 0 2020 6 1 5 6 0 8 1 lockfpl 104 22 0 21 1 0 1 1 0 8 0 lockfspl 48 10 0 9 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 96 124 0 115 1 0 1 1 0 8 0 zombiepl 144 368 0 368 1 0 1 1 0 8 1 processpl 992 399 0 368 5 0 5 5 0 8 0 procpl 624 714 0 674 4 0 4 4 0 8 0 sockpl 400 561 0 542 4 0 4 4 0 8 2 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 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 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 182 0 0 22 0 22 22 0 8 0 mtagpl 96 15 0 0 1 0 1 1 0 8 0 mbufpl 256 222 0 0 13 0 13 13 0 8 0 bufpl 280 3595 0 137 247 0 247 247 0 8 0 anonpl 16 56828 0 42270 75 1 74 74 0 124 6 amapchunkpl 152 2313 0 2168 12 0 12 12 0 158 4 amappl16 192 1560 0 652 46 0 46 46 0 8 0 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 27 0 21 1 0 1 1 0 8 0 amappl13 168 116 0 110 1 0 1 1 0 8 0 amappl12 160 141 0 136 1 0 1 1 0 8 0 amappl11 152 65 0 50 1 0 1 1 0 8 0 amappl10 144 26 0 21 1 0 1 1 0 8 0 amappl9 136 383 0 382 1 0 1 1 0 8 0 amappl8 128 378 0 345 2 0 2 2 0 8 0 amappl7 120 125 0 112 1 0 1 1 0 8 0 amappl6 112 25 0 21 1 0 1 1 0 8 0 amappl5 104 345 0 326 1 0 1 1 0 8 0 amappl4 96 510 0 479 1 0 1 1 0 8 0 amappl3 88 102 0 97 1 0 1 1 0 8 0 amappl2 80 2121 0 2056 2 0 2 2 0 8 0 amappl1 72 19893 0 19457 23 13 10 18 0 8 0 amappl 80 985 0 942 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 14 0 0 1 0 1 1 0 8 0 uaddrrnd 24 384 0 368 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 384 0 368 1 0 1 1 0 8 0 vmmpekpl 168 7026 0 6993 2 0 2 2 0 8 0 vmmpepl 168 55875 0 53831 134 7 127 127 0 357 33 vmsppl 368 383 0 368 2 0 2 2 0 8 0 pdppl 4096 775 0 736 6 0 6 6 0 8 1 pvpl 32 181381 0 163690 178 0 178 178 0 265 16 pmappl 232 383 0 368 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 261 0 3 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pool_cache_get(ffffffff828cdee0) at pool_cache_get+0x1b1 pool_cache_item_magic_check sys/kern/subr_pool.c:1770 [inline] pool_cache_get(ffffffff828cdee0) at pool_cache_get+0x1b1 sys/kern/subr_pool.c:1884 pool_get(ffffffff828cdee0,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ada980) at tcp_output+0x14e6 tcp_usrreq(fffffd806ead9c88,9,fffffd807f01f600,0,0,ffff800020e4d010) at tcp_usrreq+0xa55 sosend(fffffd806ead9c88,0,ffff800020e24cc8,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e4d010,4,ffff800020e24cc8,0,ffff800020e24db0) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e4d010,ffff800020e24d60,ffff800020e24db0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e24e30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e24e30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffb8950, 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 __mp_lock(ffffffff828c6fe8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c6fe8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 if_qstart_compat(ffff80000017b520) at if_qstart_compat+0x1a sys/net/if.c:675 ifq_serialize(ffff80000017b520,ffff80000017b638) at ifq_serialize+0x173 sys/net/ifq.c:113 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -7