syzbot


BUG: corrupted list in hsr_prune_nodes

Status: auto-closed as invalid on 2019/10/11 11:32
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+99ad9e40137a83c70ee3@syzkaller.appspotmail.com
First crash: 1810d, last: 1810d
Discussions (3)
Title Replies (including bot) Last reply
Reminder: 4 open syzbot bugs in "net/hsr" subsystem 1 (1) 2019/07/24 02:35
Reminder: 5 open syzbot bugs in "net/hsr" subsystem 1 (1) 2019/07/02 06:26
BUG: corrupted list in hsr_prune_nodes 0 (1) 2019/04/14 16:48

Sample crash report:
list_del corruption. next->prev should be ffff88809b45c240, but was ffff8880a0202900
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:54!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 13874 Comm: syz-executor.0 Not tainted 5.1.0-rc4+ #85
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_del_entry_valid.cold+0x48/0x4f lib/list_debug.c:54
Code: e8 00 cf 28 fe 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 00 a1 a1 87 e8 ec ce 28 fe 0f 0b 4c 89 f6 48 c7 c7 c0 a1 a1 87 e8 db ce 28 fe <0f> 0b 90 90 90 90 90 55 48 89 e5 41 54 53 48 89 fb 48 c7 c7 60 98
RSP: 0018:ffff8880ae807c80 EFLAGS: 00010286
RAX: 0000000000000054 RBX: ffffffffffffffd0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815affc6 RDI: ffffed1015d00f82
RBP: ffff8880ae807c98 R08: 0000000000000054 R09: ffffed1015d05011
R10: ffffed1015d05010 R11: ffff8880ae828087 R12: ffff88806f59b260
R13: ffff88806f59b260 R14: ffff88809b45c240 R15: 0000000000000000
FS:  00007fa430e01700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30724000 CR3: 0000000060d3e000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __list_del_entry include/linux/list.h:117 [inline]
 list_del_rcu include/linux/rculist.h:130 [inline]
 hsr_prune_nodes+0x399/0x9d0 net/hsr/hsr_framereg.c:402
 call_timer_fn+0x190/0x720 kernel/time/timer.c:1325
 expire_timers kernel/time/timer.c:1362 [inline]
 __run_timers kernel/time/timer.c:1681 [inline]
 __run_timers kernel/time/timer.c:1649 [inline]
 run_timer_softirq+0x652/0x1700 kernel/time/timer.c:1694
 __do_softirq+0x266/0x95a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:374 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:414
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x14a/0x570 arch/x86/kernel/apic/apic.c:1062
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:list_lru_count_one+0x2e/0x380 mm/list_lru.c:189
Code: 41 56 41 55 49 89 fd 41 54 49 89 d4 53 48 63 de e8 d7 97 d6 ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 27 03 00 00 48 c1 e3 07 49 03 5d 00 e8 1f 44 c4 ff e8 aa 97
RSP: 0018:ffff888097d178c0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90005df3000
RDX: 1ffff1101316ba41 RSI: ffffffff8199f729 RDI: ffff888098b5d208
RBP: ffff888097d178e0 R08: ffff8880a9366480 R09: 0000000000000002
R10: ffffed1015d05bbf R11: ffff8880ae82ddfb R12: ffff88806fc38380
R13: ffff888098b5d208 R14: ffff888097d17a20 R15: ffff888097d17a24
 list_lru_shrink_count include/linux/list_lru.h:122 [inline]
 super_cache_count+0x1a8/0x2e0 fs/super.c:147
 do_shrink_slab+0x10e/0xa80 mm/vmscan.c:469
 shrink_slab_memcg mm/vmscan.c:616 [inline]
 shrink_slab+0x36a/0x5e0 mm/vmscan.c:688
 shrink_node+0x552/0x1570 mm/vmscan.c:2724
 shrink_zones mm/vmscan.c:2953 [inline]
 do_try_to_free_pages+0x3cb/0x11e0 mm/vmscan.c:3015
 try_to_free_mem_cgroup_pages+0x2dd/0xa30 mm/vmscan.c:3319
 reclaim_high.constprop.0+0xb3/0x100 mm/memcontrol.c:2152
 mem_cgroup_handle_over_high+0x8e/0x130 mm/memcontrol.c:2177
 tracehook_notify_resume include/linux/tracehook.h:190 [inline]
 exit_to_usermode_loop+0x1ee/0x2c0 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa430e00c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: 0000000000000003 RBX: 0000000000000005 RCX: 0000000000458c29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fa430e016d4
R13: 00000000004c54b5 R14: 00000000004d9698 R15: 00000000ffffffff
Modules linked in:
---[ end trace e4b315486d1a6405 ]---
RIP: 0010:__list_del_entry_valid.cold+0x48/0x4f lib/list_debug.c:54
Code: e8 00 cf 28 fe 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 00 a1 a1 87 e8 ec ce 28 fe 0f 0b 4c 89 f6 48 c7 c7 c0 a1 a1 87 e8 db ce 28 fe <0f> 0b 90 90 90 90 90 55 48 89 e5 41 54 53 48 89 fb 48 c7 c7 60 98
RSP: 0018:ffff8880ae807c80 EFLAGS: 00010286
RAX: 0000000000000054 RBX: ffffffffffffffd0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815affc6 RDI: ffffed1015d00f82
RBP: ffff8880ae807c98 R08: 0000000000000054 R09: ffffed1015d05011
R10: ffffed1015d05010 R11: ffff8880ae828087 R12: ffff88806f59b260
R13: ffff88806f59b260 R14: ffff88809b45c240 R15: 0000000000000000
FS:  00007fa430e01700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30724000 CR3: 0000000060d3e000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/04/14 11:32 bpf-next c342dc109aa5 505ab413 .config console log report ci-upstream-bpf-next-kasan-gce
* Struck through repros no longer work on HEAD.