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BUG: KMSAN: uninit-value in __dev_queue_xmit+0x5097/0x5e60 net/core/dev.c:4728
 __dev_queue_xmit+0x5097/0x5e60 net/core/dev.c:4728
 dev_queue_xmit include/linux/netdevice.h:3365 [inline]
 br_dev_queue_push_xmit+0xa12/0xc20 net/bridge/br_forward.c:53
 NF_HOOK include/linux/netfilter.h:318 [inline]
 br_forward_finish+0xfe/0x330 net/bridge/br_forward.c:66
 NF_HOOK include/linux/netfilter.h:318 [inline]
 __br_forward+0x8cc/0xb30 net/bridge/br_forward.c:115
 deliver_clone net/bridge/br_forward.c:131 [inline]
 maybe_deliver+0x3e0/0x5c0 net/bridge/br_forward.c:191
 br_flood+0x45b/0xb70 net/bridge/br_forward.c:238
 br_dev_xmit+0x1bf6/0x2040 net/bridge/br_device.c:-1
 __netdev_start_xmit include/linux/netdevice.h:5248 [inline]
 netdev_start_xmit include/linux/netdevice.h:5257 [inline]
 xmit_one net/core/dev.c:3845 [inline]
 dev_hard_start_xmit+0x22f/0xa30 net/core/dev.c:3861
 __dev_queue_xmit+0x3c51/0x5e60 net/core/dev.c:4763
 dev_queue_xmit include/linux/netdevice.h:3365 [inline]
 neigh_resolve_output+0x9c5/0xaf0 net/core/neighbour.c:1595
 neigh_output include/net/neighbour.h:547 [inline]
 ip6_finish_output2+0x24e0/0x2d30 net/ipv6/ip6_output.c:136
 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline]
 ip6_finish_output+0x903/0x10d0 net/ipv6/ip6_output.c:220
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x331/0x600 net/ipv6/ip6_output.c:247
 dst_output include/net/dst.h:464 [inline]
 NF_HOOK include/linux/netfilter.h:318 [inline]
 ndisc_send_skb+0xc62/0x16b0 net/ipv6/ndisc.c:512
 ndisc_send_rs+0x89e/0xa10 net/ipv6/ndisc.c:722
 addrconf_rs_timer+0x4a1/0x730 net/ipv6/addrconf.c:4037
 call_timer_fn+0x4c/0x520 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1798 [inline]
 __run_timers kernel/time/timer.c:2372 [inline]
 __run_timer_base+0x80f/0xd90 kernel/time/timer.c:2384
 run_timer_base kernel/time/timer.c:2393 [inline]
 run_timer_softirq+0x3a/0x80 kernel/time/timer.c:2403
 handle_softirqs+0x169/0x6e0 kernel/softirq.c:622
 run_ksoftirqd+0x29/0x50 kernel/softirq.c:1063
 smpboot_thread_fn+0x56c/0xa30 kernel/smpboot.c:160
 kthread+0xd5c/0xf00 kernel/kthread.c:463
 ret_from_fork+0x1f5/0x4c0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Uninit was stored to memory at:
 ext4_xattr_set_entry+0x130c/0x3440 fs/ext4/xattr.c:1735
 ext4_xattr_block_set+0xc82/0x5010 fs/ext4/xattr.c:2025
 ext4_xattr_set_handle+0x22d7/0x2c00 fs/ext4/xattr.c:2452
 ext4_xattr_set+0x2ff/0x5b0 fs/ext4/xattr.c:2554
 ext4_xattr_trusted_set+0x51/0x70 fs/ext4/xattr_trusted.c:38
 __vfs_setxattr+0x742/0x850 fs/xattr.c:200
 __vfs_setxattr_noperm+0x224/0xad0 fs/xattr.c:234
 __vfs_setxattr_locked+0x448/0x490 fs/xattr.c:295
 vfs_setxattr+0x27f/0x640 fs/xattr.c:321
 do_setxattr fs/xattr.c:636 [inline]
 filename_setxattr+0x3a4/0xcc0 fs/xattr.c:665
 path_setxattrat+0x734/0x820 fs/xattr.c:713
 __do_sys_lsetxattr fs/xattr.c:754 [inline]
 __se_sys_lsetxattr fs/xattr.c:750 [inline]
 __x64_sys_lsetxattr+0x103/0x1c0 fs/xattr.c:750
 x64_sys_call+0x30f0/0x3e30 arch/x86/include/generated/asm/syscalls_64.h:190
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __alloc_frozen_pages_noprof+0x689/0xf00 mm/page_alloc.c:5206
 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2416
 alloc_frozen_pages_noprof mm/mempolicy.c:2487 [inline]
 alloc_pages_noprof+0x102/0x280 mm/mempolicy.c:2507
 stack_depot_save_flags+0x6e6/0x7b0 lib/stackdepot.c:677
 stack_depot_save+0x12/0x20 lib/stackdepot.c:739
 ref_tracker_alloc+0x1df/0x7a0 lib/ref_tracker.c:278
 __netdev_tracker_alloc include/linux/netdevice.h:4375 [inline]
 netdev_hold include/linux/netdevice.h:4404 [inline]
 rx_queue_add_kobject net/core/net-sysfs.c:1257 [inline]
 net_rx_queue_update_kobjects+0x25c/0xd60 net/core/net-sysfs.c:1322
 register_queue_kobjects net/core/net-sysfs.c:2114 [inline]
 netdev_register_kobject+0x2d7/0x540 net/core/net-sysfs.c:2362
 register_netdevice+0x1b41/0x25d0 net/core/dev.c:11294
 rtnl_newlink_create+0x465/0x1250 net/core/rtnetlink.c:3835
 __rtnl_newlink net/core/rtnetlink.c:3950 [inline]
 rtnl_newlink+0x2f13/0x3a90 net/core/rtnetlink.c:4065
 rtnetlink_rcv_msg+0x106f/0x14b0 net/core/rtnetlink.c:6951
 netlink_rcv_skb+0x54d/0x680 net/netlink/af_netlink.c:2552
 rtnetlink_rcv+0x35/0x40 net/core/rtnetlink.c:6978
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0xf04/0x12b0 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x10b3/0x1250 net/netlink/af_netlink.c:1896
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg+0x333/0x3d0 net/socket.c:742
 __sys_sendto+0x593/0x720 net/socket.c:2244
 __do_sys_sendto net/socket.c:2251 [inline]
 __se_sys_sendto net/socket.c:2247 [inline]
 __x64_sys_sendto+0x130/0x200 net/socket.c:2247
 x64_sys_call+0x3924/0x3e30 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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