ci starts bisection 2022-07-20 05:56:58.41660423 +0000 UTC m=+20608.007690362 bisecting fixing commit since 42226c989789d8da4af1de0c31070c96726d990c building syzkaller on 744a39e220cece33e207035facce6c5ae161b775 testing commit 42226c989789d8da4af1de0c31070c96726d990c compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: aee50563bb2a93ef0c41cf67baa57b98cd48545a251375de3bfd3dc7204a93cd all runs: crashed: WARNING in default_device_exit_batch testing current HEAD ca85855bdcae8f84f1512e88b4c75009ea17ea2f testing commit ca85855bdcae8f84f1512e88b4c75009ea17ea2f compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: ad0b1982f70c21d3cf6f94dc8b0909da09b1938c613c0751d53cf7125514fef2 run #0: crashed: WARNING in default_device_exit_batch run #1: crashed: WARNING in default_device_exit_batch run #2: crashed: WARNING in default_device_exit_batch run #3: crashed: SYZFATAL: executor failed NUM times: executor NUM: failed to write control pipe: write |NUM: broken pipe run #4: crashed: WARNING in default_device_exit_batch run #5: crashed: WARNING in default_device_exit_batch run #6: crashed: SYZFATAL: executor failed NUM times: executor NUM: exit status NUM run #7: crashed: WARNING in default_device_exit_batch run #8: crashed: SYZFATAL: executor failed NUM times: executor NUM: failed to write control pipe: write |NUM: broken pipe run #9: crashed: WARNING in default_device_exit_batch revisions tested: 2, total time: 22m30.725470905s (build: 13m23.852406233s, test: 8m27.268092412s) the crash still happens on HEAD commit msg: Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma crash: WARNING in default_device_exit_batch device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode bond29 (unregistering): Released all slaves ------------[ cut here ]------------ WARNING: CPU: 1 PID: 46 at net/core/dev.c:10866 netdev_has_any_lower_dev net/core/dev.c:6844 [inline] WARNING: CPU: 1 PID: 46 at net/core/dev.c:10866 unregister_netdevice_many+0x1070/0x1660 net/core/dev.c:10867 Modules linked in: CPU: 0 PID: 46 Comm: kworker/u4:3 Not tainted 5.19.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Workqueue: netns cleanup_net RIP: 0010:unregister_netdevice_many+0x1070/0x1660 net/core/dev.c:10866 Code: d0 fa ff ff ba bc 1a 00 00 48 c7 c6 e0 11 03 8a 48 c7 c7 20 12 03 8a c6 05 4e b4 23 06 01 e8 77 ca b0 01 0f 0b e9 aa fa ff ff <0f> 0b e9 96 fa ff ff 80 3d 37 b4 23 06 00 0f 85 5e fa ff ff ba 85 RSP: 0018:ffffc90000b77a90 EFLAGS: 00010206 RAX: ffff88806c39c8a0 RBX: ffff8880774680a0 RCX: ffffffff8154447e RDX: 1ffffffff1913660 RSI: 0000000000000008 RDI: ffffffff8c89b300 RBP: ffff88801bde1f80 R08: 0000000000000000 R09: ffffffff8c89b307 R10: fffffbfff1913660 R11: 000000000007e07a R12: ffff888077468000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88801bde1f80 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa12a3b3a70 CR3: 0000000024b06000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: default_device_exit_batch+0x39f/0x4f0 net/core/dev.c:11337 cleanup_net+0x423/0x980 net/core/net_namespace.c:594 process_one_work+0x841/0x13a0 kernel/workqueue.c:2289 worker_thread+0x598/0xec0 kernel/workqueue.c:2436 kthread+0x299/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306