| TITLE: pool: cpu free list modified: mbufpl |
| |
| panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd806f203200+16 0x0!=0xa3d38739ca8f55c0 |
| Stopped at db_enter+0x18: addq $0x8,%rsp |
| TID PID UID PRFLAGS PFLAGS CPU COMMAND |
| *117407 30019 0 0 0 0K syz-executor.0 |
| 436636 66606 0 0x14000 0x200 1 zerothread |
| db_enter() at db_enter+0x18 |
| panic() at panic+0x15c |
| pool_cache_get(ffffffff82624688) at pool_cache_get+0x323 |
| pool_get() at pool_get+0x91 |
| m_get(2,3) at m_get+0x4c |
| rt_ifa_del(ffff800000a92400,800100,ffff800000a92458,0) at rt_ifa_del+0x79 |
| in_ioctl_sifaddr(8020690c,ffff800020b5fa00,ffff800000a68000,1) at in_ioctl_sifaddr+0x192 |
| in_ioctl(8020690c,ffff800020b5fa00,ffff800000a68000,1) at in_ioctl+0x1e7 |
| ifioctl(fffffd806e97dc08,8020690c,ffff800020b5fa00,ffff800020abf650) at ifioctl+0xb64 |
| sys_ioctl(ffff800020abf650,ffff800020b5fb18,ffff800020b5fb60) at sys_ioctl+0x5b9 |
| syscall(ffff800020b5fbe0) at syscall+0x4a4 |
| Xsyscall(6,0,ffffffffffffff36,0,3,25189b8b010) at Xsyscall+0x128 |
| end of kernel |
| end trace frame: 0x7f7ffffc7280, 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_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd806f203200+16 0x0!=0xa3d38739ca8f55c0 |
| ddb{0}> trace |
| db_enter() at db_enter+0x18 |
| panic() at panic+0x15c |
| pool_cache_get(ffffffff82624688) at pool_cache_get+0x323 |
| pool_get() at pool_get+0x91 |
| m_get(2,3) at m_get+0x4c |
| rt_ifa_del(ffff800000a92400,800100,ffff800000a92458,0) at rt_ifa_del+0x79 |
| in_ioctl_sifaddr(8020690c,ffff800020b5fa00,ffff800000a68000,1) at in_ioctl_sifaddr+0x192 |
| in_ioctl(8020690c,ffff800020b5fa00,ffff800000a68000,1) at in_ioctl+0x1e7 |
| ifioctl(fffffd806e97dc08,8020690c,ffff800020b5fa00,ffff800020abf650) at ifioctl+0xb64 |
| sys_ioctl(ffff800020abf650,ffff800020b5fb18,ffff800020b5fb60) at sys_ioctl+0x5b9 |
| syscall(ffff800020b5fbe0) at syscall+0x4a4 |
| Xsyscall(6,0,ffffffffffffff36,0,3,25189b8b010) at Xsyscall+0x128 |
| end of kernel |
| end trace frame: 0x7f7ffffc7280, count: -12 |
| ddb{0}> show registers |
| rdi 0 |
| rsi 0x1 |
| rbp 0xffff800020b5f4b0 |
| rbx 0xffff800020b5f560 |
| rdx 0x8b |
| rcx 0x2 |
| rax 0x1 |
| r8 0xffffffff819b183f kprintf+0x16f |
| r9 0x1 |
| r10 0x227c3012a89f869b |
| r11 0x4a2c16fef9a4ba2f |
| r12 0x3000000008 |
| r13 0xffff800020b5f4c0 |
| r14 0x100 |
| r15 0x1 |
| rip 0xffffffff8195ee38 db_enter+0x18 |
| cs 0x8 |
| rflags 0x246 |
| rsp 0xffff800020b5f4a0 |
| ss 0x10 |
| db_enter+0x18: addq $0x8,%rsp |
| ddb{0}> show proc |
| PROC (syz-executor.0) pid=117407 stat=onproc |
| flags process=0 proc=0 |
| pri=50, usrpri=50, nice=20 |
| forw=0xffffffffffffffff, list=0xffff800020abf8c8,0xffffffff8265bb30 |
| process=0xffff800020adc380 user=0xffff800020b5a000, vmspace=0xfffffd807f00b730 |
| estcpu=36, cpticks=1, pctcpu=0.0 |
| user=0, sys=1, intr=0 |
| ddb{0}> ps |
| PID TID PPID UID S FLAGS WAIT COMMAND |
| *30019 117407 97149 0 7 0 syz-executor.0 |
| 97149 370765 97637 0 3 0x82 nanosleep syz-executor.0 |
| 97637 187212 1531 0 3 0x82 thrsleep syz-execprog |
| 97637 166304 1531 0 3 0x4000082 nanosleep syz-execprog |
| 97637 289893 1531 0 3 0x4000082 thrsleep syz-execprog |
| 97637 521246 1531 0 3 0x4000082 thrsleep syz-execprog |
| 97637 382467 1531 0 3 0x4000082 thrsleep syz-execprog |
| 97637 166437 1531 0 3 0x4000082 thrsleep syz-execprog |
| 97637 279762 1531 0 3 0x4000082 thrsleep syz-execprog |
| 97637 512890 1531 0 3 0x4000082 nanosleep syz-execprog |
| 97637 139529 1531 0 3 0x4000082 kqread syz-execprog |
| 1531 2350 63782 0 3 0x10008a pause ksh |
| 63782 88379 90105 0 3 0x92 select sshd |
| 37455 121728 1 0 3 0x100083 ttyin getty |
| 90105 484090 1 0 3 0x80 select sshd |
| 66876 200702 70355 74 3 0x100092 bpf pflogd |
| 70355 520872 1 0 3 0x80 netio pflogd |
| 8612 99778 29908 73 3 0x100090 kqread syslogd |
| 29908 138636 1 0 3 0x100082 netio syslogd |
| 67370 84544 1 77 3 0x100090 poll dhclient |
| 90856 7548 1 0 3 0x80 poll dhclient |
| 66606 436636 0 0 7 0x14200 zerothread |
| 94955 303282 0 0 3 0x14200 aiodoned aiodoned |
| 80584 506105 0 0 3 0x14200 syncer update |
| 62945 304798 0 0 3 0x14200 cleaner cleaner |
| 17268 471267 0 0 3 0x14200 reaper reaper |
| 19469 254963 0 0 3 0x14200 pgdaemon pagedaemon |
| 46297 447110 0 0 3 0x14200 bored crynlk |
| 55901 477784 0 0 3 0x14200 bored crypto |
| 93787 463827 0 0 3 0x40014200 acpi0 acpi0 |
| 28552 508454 0 0 3 0x40014200 idle1 |
| 20967 480764 0 0 3 0x14200 bored softnet |
| 63807 307762 0 0 3 0x14200 bored systqmp |
| 19522 373346 0 0 3 0x14200 bored systq |
| 39299 249518 0 0 3 0x40014200 bored softclock |
| 36572 145400 0 0 3 0x40014200 idle0 |
| 43600 334759 0 0 3 0x14200 bored smr |
| 1 272120 0 0 3 0x82 wait init |
| 0 0 -1 0 3 0x10200 scheduler swapper |
| ddb{0}> show all locks |
| Process 30019 (syz-executor.0) thread 0xffff800020abf650 (117407) |
| exclusive rwlock netlock r = 0 (0xffffffff82478e48) |
| #0 witness_lock+0x52e |
| #1 in_ioctl_sifaddr+0x69 |
| #2 in_ioctl+0x1e7 |
| #3 ifioctl+0xb64 |
| #4 sys_ioctl+0x5b9 |
| #5 syscall+0x4a4 |
| #6 Xsyscall+0x128 |
| exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8263e9d8) |
| #0 witness_lock+0x52e |
| #1 syscall+0x400 |
| #2 Xsyscall+0x128 |
| ddb{0}> show malloc |
| Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim |
| devbuf 9457 6385K 6385K 78643K 10544 0 0 |
| pcb 13 8K 8K 78643K 13 0 0 |
| rtable 77 2K 2K 78643K 165 0 0 |
| ifaddr 33 9K 9K 78643K 81 0 0 |
| counters 39 33K 33K 78643K 39 0 0 |
| ioctlops 0 0K 4K 78643K 1468 0 0 |
| mount 1 1K 1K 78643K 1 0 0 |
| vnodes 1181 74K 74K 78643K 1186 0 0 |
| UFS quota 1 32K 32K 78643K 1 0 0 |
| UFS mount 5 36K 36K 78643K 5 0 0 |
| shm 2 1K 1K 78643K 2 0 0 |
| VM map 2 1K 1K 78643K 2 0 0 |
| sem 2 0K 0K 78643K 2 0 0 |
| dirhash 12 2K 2K 78643K 12 0 0 |
| ACPI 1808 196K 290K 78643K 12765 0 0 |
| file desc 3 8K 12K 78643K 66 0 0 |
| proc 59 63K 83K 78643K 384 0 0 |
| NFS srvsock 1 0K 0K 78643K 1 0 0 |
| NFS daemon 1 16K 16K 78643K 1 0 0 |
| in_multi 22 1K 1K 78643K 22 0 0 |
| ether_multi 1 0K 0K 78643K 1 0 0 |
| ISOFS mount 1 32K 32K 78643K 1 0 0 |
| MSDOSFS mount 1 16K 16K 78643K 1 0 0 |
| ttys 18 79K 79K 78643K 18 0 0 |
| exec 0 0K 1K 78643K 199 0 0 |
| pagedep 1 8K 8K 78643K 1 0 0 |
| inodedep 1 32K 32K 78643K 1 0 0 |
| newblk 1 0K 0K 78643K 1 0 0 |
| VM swap 7 26K 26K 78643K 7 0 0 |
| UVM amap 73 12K 12K 78643K 1005 0 0 |
| UVM aobj 2 2K 2K 78643K 2 0 0 |
| memdesc 1 4K 4K 78643K 1 0 0 |
| crypto data 1 1K 1K 78643K 1 0 0 |
| NDP 5 0K 0K 78643K 7 0 0 |
| temp 48 3546K 3610K 78643K 3433 0 0 |
| SYN cache 2 16K 16K 78643K 2 0 0 |
| ddb{0}> show all pools |
| Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle |
| arp 64 4 0 1 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 4 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 82 0 75 1 0 1 1 0 8 0 |
| nd6 48 2 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 0 1 0 1 1 0 8 0 |
| pfstkey 112 11 0 0 1 0 1 1 0 8 0 |
| pfstate 328 11 0 0 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 256 167 0 2 11 0 11 11 0 8 0 |
| art_table 32 168 0 2 2 0 2 2 0 8 0 |
| art_node 16 33 0 6 1 0 1 1 0 8 0 |
| dirhash 1024 17 0 0 3 0 3 3 0 8 0 |
| dino1pl 128 1470 0 68 46 0 46 46 0 8 0 |
| ffsino 272 1470 0 68 94 0 94 94 0 8 0 |
| nchpl 144 1757 0 146 60 0 60 60 0 8 0 |
| uvmvnodes 72 1480 0 0 27 0 27 27 0 8 0 |
| vnodes 208 1480 0 0 78 0 78 78 0 8 0 |
| namei 1024 4334 0 4334 2 1 1 1 0 8 1 |
| percpumem 16 30 0 0 1 0 1 1 0 8 0 |
| scxspl 192 4554 0 4554 8 1 7 7 0 8 7 |
| plimitpl 152 15 0 8 1 0 1 1 0 8 0 |
| sigapl 432 274 0 260 2 0 2 2 0 8 0 |
| knotepl 112 39 0 28 1 0 1 1 0 8 0 |
| kqueuepl 104 2 0 0 1 0 1 1 0 8 0 |
| pipepl 112 154 0 141 2 1 1 1 0 8 0 |
| fdescpl 488 275 0 260 3 0 3 3 0 8 0 |
| filepl 152 1217 0 1158 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 52 0 43 1 0 1 1 0 8 0 |
| zombiepl 144 260 0 260 2 1 1 1 0 8 1 |
| processpl 896 290 0 260 4 0 4 4 0 8 0 |
| procpl 632 298 0 260 4 0 4 4 0 8 0 |
| sockpl 384 128 0 109 2 0 2 2 0 8 0 |
| mcl4k 4096 2 0 0 1 0 1 1 0 8 0 |
| mcl2k 2048 73 0 0 10 0 10 10 0 8 1 |
| mtagpl 80 1 0 0 1 0 1 1 0 8 0 |
| mbufpl 256 102 0 0 6 0 6 6 0 8 0 |
| mbufpl: pool(0xffffffff82624688:mbufpl): free list modified: page 0xfffffd806d737000; item ordinal 0; addr 0xfffffd806d737600 (p 0xfffffd806d89d000); offset 0x0=0x0 |
| pool(mbufpl): free list modified: page 0xfffffd806d737000; item ordinal 0; addr 0xfffffd806d737600 (p 0xfffffd806d89d000); offset 0x0=0x0 |
| mbufpl: pool(0xffffffff82624688:mbufpl): page inconsistency: page 0xfffffd806d737000; item ordinal 1; addr 0x156ebcb75fa1cf1c |
| bufpl 256 5935 0 1315 289 0 289 289 0 8 0 |
| anonpl 16 23447 0 21619 15 2 13 13 0 124 5 |
| amapchunkpl 152 815 0 747 5 0 5 5 0 158 1 |
| amappl16 192 352 0 301 3 0 3 3 0 8 0 |
| amappl15 184 2 0 1 1 0 1 1 0 8 0 |
| amappl14 176 27 0 23 2 1 1 1 0 8 0 |
| amappl12 160 51 0 49 2 1 1 1 0 8 0 |
| amappl11 152 47 0 32 1 0 1 1 0 8 0 |
| amappl10 144 11 0 8 1 0 1 1 0 8 0 |
| amappl9 136 459 0 454 1 0 1 1 0 8 0 |
| amappl8 128 126 0 116 1 0 1 1 0 8 0 |
| amappl7 120 32 0 29 1 0 1 1 0 8 0 |
| amappl6 112 75 0 67 1 0 1 1 0 8 0 |
| amappl5 104 177 0 161 1 0 1 1 0 8 0 |
| amappl4 96 499 0 471 1 0 1 1 0 8 0 |
| amappl3 88 166 0 158 1 0 1 1 0 8 0 |
| amappl2 80 1050 0 986 4 1 3 3 0 8 1 |
| amappl1 72 15696 0 15270 25 7 18 20 0 8 8 |
| amappl 80 527 0 497 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 17 0 17 1 1 0 1 0 8 0 |
| aobjpl 64 1 0 0 1 0 1 1 0 8 0 |
| uaddrrnd 24 275 0 260 1 0 1 1 0 8 0 |
| uaddrbest 32 2 0 0 1 0 1 1 0 8 0 |
| uaddr 24 275 0 260 1 0 1 1 0 8 0 |
| vmmpekpl 168 6506 0 6482 2 0 2 2 0 8 0 |
| vmmpepl 168 34732 0 33747 88 8 80 80 0 357 37 |
| vmsppl 368 274 0 260 2 0 2 2 0 8 0 |
| pdppl 4096 557 0 520 6 0 6 6 0 8 1 |
| pvpl 32 117544 0 113287 118 3 115 115 0 265 80 |
| pmappl 232 274 0 260 1 0 1 1 0 8 0 |
| extentpl 40 41 0 26 1 0 1 1 0 8 0 |
| phpool 112 430 0 4 13 0 13 13 0 8 0 |
