0ªî{X¹¦: left allmulticast mode 8021q: adding VLAN 0 to HW filter on device bond0 8021q: adding VLAN 0 to HW filter on device team0 ------------[ cut here ]------------ rtmutex deadlock detected WARNING: kernel/locking/rtmutex.c:1698 at rt_mutex_handle_deadlock+0x21/0xb0 kernel/locking/rtmutex.c:1698, CPU#1: syz.3.12331/7323 Modules linked in: CPU: 1 UID: 0 PID: 7323 Comm: syz.3.12331 Tainted: G L syzkaller #0 PREEMPT_{RT,(full)} Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:rt_mutex_handle_deadlock+0x21/0xb0 kernel/locking/rtmutex.c:1698 Code: 90 90 90 90 90 90 90 90 90 41 57 41 56 41 55 41 54 53 83 ff dd 0f 85 81 00 00 00 48 89 f7 e8 16 40 01 00 48 8d 3d 3f 2f 5d 04 <67> 48 0f b9 3a 4c 8d 3d 00 00 00 00 65 48 8b 1d 13 2d 42 07 4c 8d RSP: 0018:ffffc90021a9e330 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000ffffffdd RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8baa3a60 RDI: ffffffff8f8fd220 RBP: ffffc90021a9e4e0 R08: ffffffff8f8c5ff7 R09: 1ffffffff1f18bfe R10: dffffc0000000000 R11: fffffbfff1f18bff R12: 1ffff92004353c74 R13: ffffffff8b329d22 R14: ffff88803b461008 R15: dffffc0000000000 FS: 00007fa1987c46c0(0000) GS:ffff888125fd3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa1983a0ff8 CR3: 00000000301b0000 CR4: 00000000003526f0 Call Trace: __rt_mutex_slowlock kernel/locking/rtmutex.c:1760 [inline] __rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1787 [inline] rt_mutex_slowlock+0x73c/0x780 kernel/locking/rtmutex.c:1827 __rt_mutex_lock kernel/locking/rtmutex.c:1842 [inline] __mutex_lock_common kernel/locking/rtmutex_api.c:560 [inline] mutex_lock_nested+0x168/0x1d0 kernel/locking/rtmutex_api.c:578 netdev_lock include/linux/netdevice.h:2846 [inline] netdev_lock_ops include/net/netdev_lock.h:42 [inline] __ethtool_get_link_ksettings+0x109/0x250 net/ethtool/ioctl.c:463 bond_update_speed_duplex drivers/net/bonding/bond_main.c:801 [inline] bond_slave_netdev_event drivers/net/bonding/bond_main.c:3982 [inline] bond_netdev_event+0x643/0xf80 drivers/net/bonding/bond_main.c:4089 notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2289 [inline] call_netdevice_notifiers net/core/dev.c:2303 [inline] __dev_notify_flags+0x1aa/0x310 net/core/dev.c:9792 netif_change_flags+0xde/0x1b0 net/core/dev.c:9821 dev_change_flags+0x128/0x260 net/core/dev_api.c:68 vlan_device_event+0x1b4e/0x1f00 net/8021q/vlan.c:494 notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2289 [inline] call_netdevice_notifiers net/core/dev.c:2303 [inline] __dev_notify_flags+0x1aa/0x310 net/core/dev.c:9792 netif_change_flags+0xde/0x1b0 net/core/dev.c:9821 do_setlink+0xdd6/0x4670 net/core/rtnetlink.c:3207 rtnl_group_changelink net/core/rtnetlink.c:3855 [inline] __rtnl_newlink net/core/rtnetlink.c:4023 [inline] rtnl_newlink+0x148e/0x1bd0 net/core/rtnetlink.c:4151 rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7068 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7f5/0x990 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:785 __sock_sendmsg net/socket.c:800 [inline] ____sys_sendmsg+0x565/0x870 net/socket.c:2702 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2756 __sys_sendmsg net/socket.c:2788 [inline] __do_sys_sendmsg net/socket.c:2793 [inline] __se_sys_sendmsg net/socket.c:2791 [inline] __x64_sys_sendmsg+0x1b7/0x290 net/socket.c:2791 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa19a5ace59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa1987c4028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa19a826180 RCX: 00007fa19a5ace59 RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000000000000003 RBP: 00007fa19a642d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa19a826218 R14: 00007fa19a826180 R15: 00007ffe4243f8c8 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 41 57 push %r15 b: 41 56 push %r14 d: 41 55 push %r13 f: 41 54 push %r12 11: 53 push %rbx 12: 83 ff dd cmp $0xffffffdd,%edi 15: 0f 85 81 00 00 00 jne 0x9c 1b: 48 89 f7 mov %rsi,%rdi 1e: e8 16 40 01 00 call 0x14039 23: 48 8d 3d 3f 2f 5d 04 lea 0x45d2f3f(%rip),%rdi # 0x45d2f69 * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 4c 8d 3d 00 00 00 00 lea 0x0(%rip),%r15 # 0x36 36: 65 48 8b 1d 13 2d 42 mov %gs:0x7422d13(%rip),%rbx # 0x7422d51 3d: 07 3e: 4c rex.WR 3f: 8d .byte 0x8d