syzbot


kernel BUG at net/core/dev.c:LINE!

Status: auto-closed as invalid on 2020/08/23 07:17
Reported-by: syzbot+5ad822035b1e50eb2ee7@syzkaller.appspotmail.com
First crash: 792d, last: 790d
similar bugs (8):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 kernel BUG at net/core/dev.c:LINE! (2) C error 87 7d13h 560d 0/1 upstream: reported C repro on 2020/12/11 13:29
linux-4.14 kernel BUG in validate_xmit_skb 1 499d 499d 0/1 auto-closed as invalid on 2021/06/10 04:03
upstream kernel BUG at net/core/dev.c:LINE! (2) syz 2 1353d 1353d 12/22 fixed on 2018/10/18 14:43
upstream kernel BUG in netem_enqueue 2 14d 51d 21/22 internal: reported on 2022/05/04 17:12
upstream kernel BUG at net/core/dev.c:LINE! (4) C done done 432 191d 579d 22/22 fixed on 2022/03/08 16:11
upstream kernel BUG at net/core/dev.c:LINE! C 5 1671d 1675d 3/22 fixed on 2017/12/08 02:32
linux-4.14 kernel BUG at net/core/dev.c:LINE! C inconclusive 3 542d 811d 1/1 fixed on 2021/01/17 13:53
upstream kernel BUG at net/core/dev.c:LINE! (3) C done 979 660d 804d 17/22 fixed on 2020/09/16 22:51

Sample crash report:
device veth1_vlan left promiscuous mode
device veth0_vlan left promiscuous mode
bond4 (unregistering): Releasing backup interface gtp0
bond4 (unregistering): Destroying bond bond4
------------[ cut here ]------------
kernel BUG at net/core/dev.c:8154!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 23 Comm: kworker/u4:1 Not tainted 4.19.118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:rollback_registered_many+0x1df/0xc40 net/core/dev.c:8154
Code: c0 0f 85 fe 08 00 00 c6 83 69 05 00 00 01 44 89 fe bf 01 00 00 00 e8 d0 a0 c8 fb 41 80 ff 01 0f 84 49 ff ff ff e8 91 9f c8 fb <0f> 0b e8 8a 9f c8 fb 48 8b 45 00 48 8d 58 90 48 39 c5 48 8d 44 24
RSP: 0018:ffff8880a94e7780 EFLAGS: 00010293
RAX: ffff8880a94d6600 RBX: ffff88803671d280 RCX: ffffffff859f0a00
RDX: 0000000000000000 RSI: ffffffff859f0a0f RDI: 0000000000000001
RBP: ffff8880a94e78b0 R08: ffff8880a94d6600 R09: fffffbfff13004bd
R10: fffffbfff13004bc R11: ffffffff898025e7 R12: ffff88803671d2f0
R13: ffff8880a94e7840 R14: dffffc0000000000 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb0ddabc010 CR3: 0000000094b5e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rollback_registered+0xf2/0x1c0 net/core/dev.c:8225
 unregister_netdevice_queue net/core/dev.c:9278 [inline]
 unregister_netdevice_queue+0x1d7/0x2b0 net/core/dev.c:9271
 unregister_netdevice include/linux/netdevice.h:2614 [inline]
 bond_release_and_destroy drivers/net/bonding/bond_main.c:2037 [inline]
 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3111 [inline]
 bond_netdev_event+0x810/0xb00 drivers/net/bonding/bond_main.c:3225
 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93
 call_netdevice_notifiers net/core/dev.c:1766 [inline]
 rollback_registered_many+0x7bc/0xc40 net/core/dev.c:8183
 unregister_netdevice_many.part.0+0x16/0x1e0 net/core/dev.c:9297
 unregister_netdevice_many net/core/dev.c:9296 [inline]
 default_device_exit_batch+0x2ff/0x3c0 net/core/dev.c:9768
 ops_exit_list.isra.0+0xef/0x140 net/core/net_namespace.c:156
 cleanup_net+0x3bf/0x850 net/core/net_namespace.c:553
 process_one_work+0x91f/0x1640 kernel/workqueue.c:2155
 worker_thread+0x96/0xe20 kernel/workqueue.c:2298
 kthread+0x34a/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Modules linked in:
---[ end trace 1d6f8f81de74bc35 ]---
RIP: 0010:rollback_registered_many+0x1df/0xc40 net/core/dev.c:8154
Code: c0 0f 85 fe 08 00 00 c6 83 69 05 00 00 01 44 89 fe bf 01 00 00 00 e8 d0 a0 c8 fb 41 80 ff 01 0f 84 49 ff ff ff e8 91 9f c8 fb <0f> 0b e8 8a 9f c8 fb 48 8b 45 00 48 8d 58 90 48 39 c5 48 8d 44 24
RSP: 0018:ffff8880a94e7780 EFLAGS: 00010293
RAX: ffff8880a94d6600 RBX: ffff88803671d280 RCX: ffffffff859f0a00
RDX: 0000000000000000 RSI: ffffffff859f0a0f RDI: 0000000000000001
RBP: ffff8880a94e78b0 R08: ffff8880a94d6600 R09: fffffbfff13004bd
R10: fffffbfff13004bc R11: ffffffff898025e7 R12: ffff88803671d2f0
R13: ffff8880a94e7840 R14: dffffc0000000000 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb0ddaf4018 CR3: 0000000094b5e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-19 2020/04/25 07:17 linux-4.19.y 7edd66cf6167 03d97a1b .config log report
ci2-linux-4-19 2020/04/24 23:19 linux-4.19.y 7edd66cf6167 03d97a1b .config log report
ci2-linux-4-19 2020/04/23 15:49 linux-4.19.y 7edd66cf6167 b9233cab .config log report
ci2-linux-4-19 2020/04/23 01:47 linux-4.19.y 8e2406c85187 2e44d63e .config log report