BUG: soft lockup in cleanup_net
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syzbot
Dec 1, 2021, 8:35:27 AM12/1/21
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11277b81b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link: https://syzkaller.appspot.com/bug?extid=2c44a797f2711fa03276
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2c44a7...@syzkaller.appspotmail.com
A link change request failed with some changes committed already. Interface gretap0 may have been left with an inconsistent configuration, please check.
IPVS: ftp: loaded support on port[0] = 21
Bluetooth: hci0: command 0x0419 tx timeout
watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/u4:0:7]
Modules linked in:
irq event stamp: 22969299
hardirqs last enabled at (22969298): [<ffffffff81003ce4>] trace_hardirqs_on_thunk+0x1a/0x1c
hardirqs last disabled at (22969299): [<ffffffff81003d00>] trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last enabled at (22964152): [<ffffffff87b996b1>] tipc_shutdown+0x121/0x310 net/tipc/socket.c:2603
softirqs last disabled at (22964154): [<ffffffff87bb4683>] spin_lock_bh include/linux/spinlock.h:334 [inline]
softirqs last disabled at (22964154): [<ffffffff87bb4683>] tipc_topsrv_stop net/tipc/topsrv.c:702 [inline]
softirqs last disabled at (22964154): [<ffffffff87bb4683>] tipc_topsrv_exit_net+0x283/0x5c0 net/tipc/topsrv.c:722
CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:node_maxindex lib/radix-tree.c:270 [inline]
RIP: 0010:radix_tree_load_root lib/radix-tree.c:609 [inline]
RIP: 0010:__radix_tree_lookup+0x8a/0x370 lib/radix-tree.c:1040
Code: 8b 44 24 10 bf 01 00 00 00 48 8b 58 40 48 89 dd 83 e5 03 48 89 ee e8 45 94 73 f9 48 83 fd 01 0f 85 3a 02 00 00 e8 a6 92 73 f9 <48> 89 d8 48 89 dd 48 c1 e8 03 48 83 e5 fe 42 0f b6 04 30 84 c0 74
RSP: 0018:ffff8880b5a47b68 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8880b5a361c0 RBX: ffff888042804041 RCX: ffffffff87eef2bb
RDX: 0000000000000000 RSI: ffffffff87eef2ca RDI: 0000000000000007
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000040
R13: ffffed10155e2611 R14: dffffc0000000000 R15: 0000000000000140
FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8dc75ff718 CR3: 00000000a7c65000 CR4: 00000000003426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tipc_topsrv_stop net/tipc/topsrv.c:698 [inline]
tipc_topsrv_exit_net+0x25e/0x5c0 net/tipc/topsrv.c:722
ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153
cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554
process_one_work+0x864/0x1570 kernel/workqueue.c:2153
worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60
----------------
Code disassembly (best guess):
0: 8b 44 24 10 mov 0x10(%rsp),%eax
4: bf 01 00 00 00 mov $0x1,%edi
9: 48 8b 58 40 mov 0x40(%rax),%rbx
d: 48 89 dd mov %rbx,%rbp
10: 83 e5 03 and $0x3,%ebp
13: 48 89 ee mov %rbp,%rsi
16: e8 45 94 73 f9 callq 0xf9739460
1b: 48 83 fd 01 cmp $0x1,%rbp
1f: 0f 85 3a 02 00 00 jne 0x25f
25: e8 a6 92 73 f9 callq 0xf97392d0
* 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction
2d: 48 89 dd mov %rbx,%rbp
30: 48 c1 e8 03 shr $0x3,%rax
34: 48 83 e5 fe and $0xfffffffffffffffe,%rbp
38: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax
3d: 84 c0 test %al,%al
3f: 74 .byte 0x74
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11277b81b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link: https://syzkaller.appspot.com/bug?extid=2c44a797f2711fa03276
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2c44a7...@syzkaller.appspotmail.com
A link change request failed with some changes committed already. Interface gretap0 may have been left with an inconsistent configuration, please check.
IPVS: ftp: loaded support on port[0] = 21
Bluetooth: hci0: command 0x0419 tx timeout
watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/u4:0:7]
Modules linked in:
irq event stamp: 22969299
hardirqs last enabled at (22969298): [<ffffffff81003ce4>] trace_hardirqs_on_thunk+0x1a/0x1c
hardirqs last disabled at (22969299): [<ffffffff81003d00>] trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last enabled at (22964152): [<ffffffff87b996b1>] tipc_shutdown+0x121/0x310 net/tipc/socket.c:2603
softirqs last disabled at (22964154): [<ffffffff87bb4683>] spin_lock_bh include/linux/spinlock.h:334 [inline]
softirqs last disabled at (22964154): [<ffffffff87bb4683>] tipc_topsrv_stop net/tipc/topsrv.c:702 [inline]
softirqs last disabled at (22964154): [<ffffffff87bb4683>] tipc_topsrv_exit_net+0x283/0x5c0 net/tipc/topsrv.c:722
CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:node_maxindex lib/radix-tree.c:270 [inline]
RIP: 0010:radix_tree_load_root lib/radix-tree.c:609 [inline]
RIP: 0010:__radix_tree_lookup+0x8a/0x370 lib/radix-tree.c:1040
Code: 8b 44 24 10 bf 01 00 00 00 48 8b 58 40 48 89 dd 83 e5 03 48 89 ee e8 45 94 73 f9 48 83 fd 01 0f 85 3a 02 00 00 e8 a6 92 73 f9 <48> 89 d8 48 89 dd 48 c1 e8 03 48 83 e5 fe 42 0f b6 04 30 84 c0 74
RSP: 0018:ffff8880b5a47b68 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8880b5a361c0 RBX: ffff888042804041 RCX: ffffffff87eef2bb
RDX: 0000000000000000 RSI: ffffffff87eef2ca RDI: 0000000000000007
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000040
R13: ffffed10155e2611 R14: dffffc0000000000 R15: 0000000000000140
FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8dc75ff718 CR3: 00000000a7c65000 CR4: 00000000003426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tipc_topsrv_stop net/tipc/topsrv.c:698 [inline]
tipc_topsrv_exit_net+0x25e/0x5c0 net/tipc/topsrv.c:722
ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153
cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554
process_one_work+0x864/0x1570 kernel/workqueue.c:2153
worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60
----------------
Code disassembly (best guess):
0: 8b 44 24 10 mov 0x10(%rsp),%eax
4: bf 01 00 00 00 mov $0x1,%edi
9: 48 8b 58 40 mov 0x40(%rax),%rbx
d: 48 89 dd mov %rbx,%rbp
10: 83 e5 03 and $0x3,%ebp
13: 48 89 ee mov %rbp,%rsi
16: e8 45 94 73 f9 callq 0xf9739460
1b: 48 83 fd 01 cmp $0x1,%rbp
1f: 0f 85 3a 02 00 00 jne 0x25f
25: e8 a6 92 73 f9 callq 0xf97392d0
* 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction
2d: 48 89 dd mov %rbx,%rbp
30: 48 c1 e8 03 shr $0x3,%rax
34: 48 83 e5 fe and $0xfffffffffffffffe,%rbp
38: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax
3d: 84 c0 test %al,%al
3f: 74 .byte 0x74
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Oct 30, 2022, 2:15:36 PM10/30/22
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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