login: panic: pool_do_get: mbufpl free list modified: page 0xfffffd806f178000; item addr 0xfffffd806f178c00; offset 0x0=0x0 != 0xa7113b0910e99b21 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *165897 89961 0 0x14000 0x40000200 0K softclock db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82270f77) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8264bc38,2,ffff800020e273c8) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff8264bc38,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_get(2,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250 sbappendaddr(fffffd806f6e74b0,fffffd806f6e7538,ffffffff822f4488,fffffd806f178b00,0) at sbappendaddr+0x2e9 sys/kern/uipc_socket2.c:804 rtm_sendup(fffffd806f6e74b0,fffffd806f178b00,0) at rtm_sendup+0xef sys/net/rtsock.c:594 route_input(fffffd806f178b00,0,18) at route_input+0x489 sys/net/rtsock.c:572 rtm_addr(14,ffff800000a21400) at rtm_addr+0x10b sys/net/rtsock.c:1751 nd6_dad_timer(ffff800000a21400) at nd6_dad_timer+0x2f9 sys/netinet6/nd6_nbr.c:1244 timeout_run(ffff800000a225b0) at timeout_run+0xc4 timeout_sync_leave sys/kern/kern_timeout.c:184 [inline] timeout_run(ffff800000a225b0) at timeout_run+0xc4 sys/kern/kern_timeout.c:490 softclock_thread(ffff800020e195f0) at softclock_thread+0x16a sys/kern/kern_timeout.c:580 end trace frame: 0x0, count: 3 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic pool_do_get: mbufpl free list modified: page 0xfffffd806f178000; item addr 0xfffffd806f178c00; offset 0x0=0x0 != 0xa7113b0910e99b21 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82270f77) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8264bc38,2,ffff800020e273c8) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff8264bc38,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_get(2,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250 sbappendaddr(fffffd806f6e74b0,fffffd806f6e7538,ffffffff822f4488,fffffd806f178b00,0) at sbappendaddr+0x2e9 sys/kern/uipc_socket2.c:804 rtm_sendup(fffffd806f6e74b0,fffffd806f178b00,0) at rtm_sendup+0xef sys/net/rtsock.c:594 route_input(fffffd806f178b00,0,18) at route_input+0x489 sys/net/rtsock.c:572 rtm_addr(14,ffff800000a21400) at rtm_addr+0x10b sys/net/rtsock.c:1751 nd6_dad_timer(ffff800000a21400) at nd6_dad_timer+0x2f9 sys/netinet6/nd6_nbr.c:1244 timeout_run(ffff800000a225b0) at timeout_run+0xc4 timeout_sync_leave sys/kern/kern_timeout.c:184 [inline] timeout_run(ffff800000a225b0) at timeout_run+0xc4 sys/kern/kern_timeout.c:490 softclock_thread(ffff800020e195f0) at softclock_thread+0x16a sys/kern/kern_timeout.c:580 end trace frame: 0x0, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020e27210 rbx 0xffff800020e272c0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81b4951f kprintf+0x16f r9 0x1 r10 0x2194f3eec9d20e38 r11 0x1082f3c8dab732d r12 0x3000000008 r13 0xffff800020e27220 r14 0x100 r15 0x1 rip 0xffffffff818b7698 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020e27200 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (softclock) pid=165897 stat=onproc flags process=14000 proc=40000200 pri=0, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e19860,0xffff800020e19120 process=0xffff800020e1b338 user=0xffff800020e22000, vmspace=0xffffffff8265ff28 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76909 243978 2896 0 3 0x82 nanosleep syz-executor.0 2896 219035 23362 0 3 0x82 thrsleep syz-execprog 2896 407131 23362 0 3 0x4000082 nanosleep syz-execprog 2896 389022 23362 0 3 0x4000082 thrsleep syz-execprog 2896 297910 23362 0 3 0x4000082 thrsleep syz-execprog 2896 274221 23362 0 3 0x4000082 thrsleep syz-execprog 2896 133906 23362 0 3 0x4000082 thrsleep syz-execprog 2896 328374 23362 0 3 0x4000082 kqread syz-execprog 2896 498838 23362 0 3 0x4000082 thrsleep syz-execprog 2896 36168 23362 0 3 0x4000082 nanosleep syz-execprog 23362 349660 33883 0 3 0x10008a pause ksh 33883 149068 67507 0 3 0x92 select sshd 51132 267192 1 0 3 0x100083 ttyin getty 67507 392780 1 0 3 0x80 select sshd 98163 156436 62968 74 3 0x100092 bpf pflogd 62968 192059 1 0 3 0x80 netio pflogd 79845 231327 95539 73 3 0x100090 kqread syslogd 95539 472874 1 0 3 0x100082 netio syslogd 6098 478363 1 77 3 0x100090 poll dhclient 47086 232561 1 0 3 0x80 poll dhclient 41164 125194 0 0 3 0x14200 bored smr 66713 388812 0 0 3 0x14200 pgzero zerothread 46730 125045 0 0 3 0x14200 aiodoned aiodoned 21640 226190 0 0 3 0x14200 syncer update 42520 332603 0 0 3 0x14200 cleaner cleaner 23819 388376 0 0 3 0x14200 reaper reaper 43732 482224 0 0 3 0x14200 pgdaemon pagedaemon 1380 475942 0 0 3 0x14200 bored crynlk 12400 308391 0 0 3 0x14200 bored crypto 20183 117215 0 0 3 0x40014200 acpi0 acpi0 70473 74827 0 0 7 0x40014200 idle1 47758 275674 0 0 3 0x14200 bored softnet 42824 206324 0 0 3 0x14200 bored systqmp 65184 316853 0 0 3 0x14200 bored systq *89961 165897 0 0 7 0x40014200 softclock 54212 29565 0 0 3 0x40014200 idle0 1 210500 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex mbufpl r = 0 (0xffffffff8264bc48) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_get+0xbf sys/kern/subr_pool.c:578 #4 m_get+0x4c sys/kern/uipc_mbuf.c:250 #5 sbappendaddr+0x2e9 sys/kern/uipc_socket2.c:804 #6 rtm_sendup+0xef sys/net/rtsock.c:594 #7 route_input+0x489 sys/net/rtsock.c:572 #8 rtm_addr+0x10b sys/net/rtsock.c:1751 #9 nd6_dad_timer+0x2f9 sys/netinet6/nd6_nbr.c:1244 #10 timeout_run+0xc4 timeout_sync_leave sys/kern/kern_timeout.c:184 [inline] #10 timeout_run+0xc4 sys/kern/kern_timeout.c:490 #11 softclock_thread+0x16a sys/kern/kern_timeout.c:580 #12 proc_trampoline+0x1c Process 89961 (softclock) thread 0xffff800020e195f0 (165897) exclusive rwlock netlock r = 0 (0xffffffff824c7db8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 nd6_dad_timer+0x34 sys/netinet6/nd6_nbr.c:1170 #2 timeout_run+0xc4 timeout_sync_leave sys/kern/kern_timeout.c:184 [inline] #2 timeout_run+0xc4 sys/kern/kern_timeout.c:490 #3 softclock_thread+0x16a sys/kern/kern_timeout.c:580 #4 proc_trampoline+0x1c shared rwlock timeout r = 0 (0xffffffff82487930) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 timeout_run+0xb9 sys/kern/kern_timeout.c:489 #2 softclock_thread+0x16a sys/kern/kern_timeout.c:580 #3 proc_trampoline+0x1c exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8264d2a8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 #2 mi_switch+0x392 sys/kern/sched_bsd.c:435 #3 sleep_finish+0x113 sys/kern/kern_synch.c:418 #4 softclock_thread+0x103 sys/kern/kern_timeout.c:575 #5 proc_trampoline+0x1c exclusive mutex mbufpl r = 0 (0xffffffff8264bc48) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_get+0xbf sys/kern/subr_pool.c:578 #4 m_get+0x4c sys/kern/uipc_mbuf.c:250 #5 sbappendaddr+0x2e9 sys/kern/uipc_socket2.c:804 #6 rtm_sendup+0xef sys/net/rtsock.c:594 #7 route_input+0x489 sys/net/rtsock.c:572 #8 rtm_addr+0x10b sys/net/rtsock.c:1751 #9 nd6_dad_timer+0x2f9 sys/netinet6/nd6_nbr.c:1244 #10 timeout_run+0xc4 timeout_sync_leave sys/kern/kern_timeout.c:184 [inline] #10 timeout_run+0xc4 sys/kern/kern_timeout.c:490 #11 softclock_thread+0x16a sys/kern/kern_timeout.c:580 #12 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9466 6395K 6395K 78643K 10557 0 pcb 13 8K 8K 78643K 13 0 rtable 83 2K 2K 78643K 163 0 ifaddr 37 9K 9K 78643K 83 0 counters 41 33K 33K 78643K 41 0 ioctlops 0 0K 4K 78643K 1468 0 mount 1 1K 1K 78643K 1 0 vnodes 1183 74K 75K 78643K 1188 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1823 197K 290K 78643K 12980 0 file desc 2 4K 12K 78643K 62 0 proc 59 63K 83K 78643K 398 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 22 1K 1K 78643K 22 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 19 95K 95K 78643K 19 0 exec 0 0K 1K 78643K 197 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 74 12K 12K 78643K 991 0 UVM aobj 2 2K 2K 78643K 2 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 7 0K 0K 78643K 7 0 temp 29 3033K 3097K 78643K 1953 0 kqueue 3 4K 4K 78643K 3 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 4 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 1 1 0 1 1 0 8 0 unpcb 120 29 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 78 0 72 1 0 1 1 0 8 0 nd6 48 3 0 0 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 pfstitem 24 11 0 2 1 0 1 1 0 8 0 pfstkey 112 11 0 2 1 0 1 1 0 8 0 pfstate 328 11 0 2 1 0 1 1 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 144 0 0 9 0 9 9 0 8 0 art_table 32 145 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1468 0 66 88 0 88 88 0 8 0 ffsino 272 1468 0 66 94 0 94 94 0 8 0 nchpl 144 1728 0 127 60 0 60 60 0 8 0 uvmvnodes 72 1478 0 0 27 0 27 27 0 8 0 vnodes 208 1478 0 0 78 0 78 78 0 8 0 namei 1024 4380 0 4380 2 1 1 1 0 8 1 percpumem 16 31 0 0 1 0 1 1 0 8 0 scxspl 192 4255 0 4255 10 9 1 7 0 8 1 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 424 285 0 256 4 0 4 4 0 8 0 knotepl 112 47 0 36 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 48 77 0 70 2 1 1 1 0 8 0 pipepl 120 154 0 141 2 1 1 1 0 8 0 fdescpl 496 270 0 256 3 0 3 3 0 8 0 filepl 152 1197 0 1139 3 0 3 3 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 62 0 53 1 0 1 1 0 8 0 zombiepl 144 256 0 255 2 1 1 1 0 8 0 processpl 984 285 0 255 5 0 5 5 0 8 1 procpl 624 293 0 255 4 0 4 4 0 8 1 sockpl 400 124 0 106 2 0 2 2 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 79 0 0 10 0 10 10 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 132 0 0 7 0 7 7 0 8 0 mbufpl: pool(0xffffffff8264bc38:mbufpl): free list modified: page 0xfffffd806f178000; item ordinal 0; addr 0xfffffd806f178c00 (p 0xfffffd806f2d7000); offset 0x0=0x0 mbufpl: pool(0xffffffff8264bc38:mbufpl): page inconsistency: page 0xfffffd806f178000; item ordinal 1; addr 0x7d8b130e4c38dbef bufpl 280 3024 0 132 207 0 207 207 0 8 0 anonpl 16 23862 0 21893 14 2 12 12 0 124 4 amapchunkpl 152 767 0 702 4 0 4 4 0 158 1 amappl16 192 342 0 288 3 0 3 3 0 8 0 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 29 0 26 1 0 1 1 0 8 0 amappl13 168 21 0 20 2 1 1 1 0 8 0 amappl12 160 34 0 29 2 1 1 1 0 8 0 amappl11 152 100 0 82 1 0 1 1 0 8 0 amappl10 144 21 0 17 1 0 1 1 0 8 0 amappl9 136 225 0 224 1 0 1 1 0 8 0 amappl8 128 270 0 263 1 0 1 1 0 8 0 amappl7 120 114 0 103 1 0 1 1 0 8 0 amappl6 112 66 0 64 2 1 1 1 0 8 0 amappl5 104 184 0 169 1 0 1 1 0 8 0 amappl4 96 495 0 468 1 0 1 1 0 8 0 amappl3 88 106 0 100 1 0 1 1 0 8 0 amappl2 80 1000 0 941 3 1 2 2 0 8 0 amappl1 72 15823 0 15404 23 5 18 18 0 8 8 amappl 80 520 0 492 1 0 1 1 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 270 0 256 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 270 0 256 1 0 1 1 0 8 0 vmmpekpl 168 6464 0 6442 2 0 2 2 0 8 0 vmmpepl 168 34408 0 33459 83 11 72 72 0 357 30 vmsppl 368 269 0 256 2 0 2 2 0 8 0 pdppl 4096 548 0 512 6 0 6 6 0 8 0 pvpl 32 118663 0 114330 111 7 104 104 0 265 69 pmappl 232 269 0 256 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 234 0 4 7 0 7 7 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82270f77) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8264bc38,2,ffff800020e273c8) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff8264bc38,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_get(2,3) at m_get+0x4c sys/kern/uipc_mbuf.c:250 sbappendaddr(fffffd806f6e74b0,fffffd806f6e7538,ffffffff822f4488,fffffd806f178b00,0) at sbappendaddr+0x2e9 sys/kern/uipc_socket2.c:804 rtm_sendup(fffffd806f6e74b0,fffffd806f178b00,0) at rtm_sendup+0xef sys/net/rtsock.c:594 route_input(fffffd806f178b00,0,18) at route_input+0x489 sys/net/rtsock.c:572 rtm_addr(14,ffff800000a21400) at rtm_addr+0x10b sys/net/rtsock.c:1751 nd6_dad_timer(ffff800000a21400) at nd6_dad_timer+0x2f9 sys/netinet6/nd6_nbr.c:1244 timeout_run(ffff800000a225b0) at timeout_run+0xc4 timeout_sync_leave sys/kern/kern_timeout.c:184 [inline] timeout_run(ffff800000a225b0) at timeout_run+0xc4 sys/kern/kern_timeout.c:490 softclock_thread(ffff800020e195f0) at softclock_thread+0x16a sys/kern/kern_timeout.c:580 end trace frame: 0x0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020e00ff0) 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(ffff800020e00ff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020e00ff0) 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(ffff800020e00ff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5