bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered forwarding state
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered forwarding state
==================================================================
BUG: KCSAN: data-race in data_push_tail / string

write to 0xffffffff88ba2500 of 1 bytes by task 509 on cpu 1:
 string_nocheck lib/vsprintf.c:650 [inline]
 string+0x16c/0x210 lib/vsprintf.c:728
 bdev_name+0x140/0x250 lib/vsprintf.c:968
 pointer+0x5e3/0xd20 lib/vsprintf.c:2498
 vsnprintf+0x861/0xe30 lib/vsprintf.c:2852
 vscnprintf+0x42/0x90 lib/vsprintf.c:2954
 printk_sprint+0x30/0x2d0 kernel/printk/printk.c:2216
 vprintk_store+0x589/0x870 kernel/printk/printk.c:2336
 vprintk_emit+0x15e/0x680 kernel/printk/printk.c:2408
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2447
 vprintk+0x75/0x80 kernel/printk/printk_safe.c:86
 _printk+0x7a/0xa0 kernel/printk/printk.c:2457
 bio_check_eod block/blk-core.c:557 [inline]
 submit_bio_noacct+0x894/0x9a0 block/blk-core.c:784
 submit_bio+0x218/0x230 block/blk-core.c:910
 submit_bio_wait+0x87/0xd0 block/bio.c:1391
 hib_submit_io+0x12b/0x170 kernel/power/swap.c:294
 swsusp_check+0xb2/0x240 kernel/power/swap.c:1573
 software_resume+0x43/0x2e0 kernel/power/hibernate.c:993
 resume_store+0x34e/0x3a0 kernel/power/hibernate.c:1271
 kobj_attr_store+0x47/0x70 lib/kobject.c:840
 sysfs_kf_write+0xae/0xd0 fs/sysfs/file.c:139
 kernfs_fop_write_iter+0x1c8/0x2c0 fs/kernfs/file.c:334
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0x77f/0x920 fs/read_write.c:679
 ksys_write+0xe8/0x1b0 fs/read_write.c:731
 __do_sys_write fs/read_write.c:742 [inline]
 __se_sys_write fs/read_write.c:739 [inline]
 __x64_sys_write+0x42/0x50 fs/read_write.c:739
 x64_sys_call+0x287e/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:2
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffffffff88ba2500 of 8 bytes by task 177 on cpu 0:
 data_make_reusable kernel/printk/printk_ringbuffer.c:594 [inline]
 data_push_tail+0x102/0x430 kernel/printk/printk_ringbuffer.c:679
 data_alloc+0xbe/0x2c0 kernel/printk/printk_ringbuffer.c:1054
 prb_reserve+0x85e/0xb60 kernel/printk/printk_ringbuffer.c:1669
 vprintk_store+0x558/0x870 kernel/printk/printk.c:2326
 vprintk_emit+0x15e/0x680 kernel/printk/printk.c:2408
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2447
 vprintk+0x75/0x80 kernel/printk/printk_safe.c:86
 _printk+0x7a/0xa0 kernel/printk/printk.c:2457
 br_set_state+0x290/0x390 net/bridge/br_stp.c:57
 br_make_forwarding+0xbc/0x150 net/bridge/br_stp.c:455
 br_port_state_selection+0x115/0x310
 br_stp_enable_port+0xcf/0x110 net/bridge/br_stp_if.c:94
 br_port_carrier_check+0x1fb/0x220 net/bridge/br_if.c:89
 br_device_event+0x388/0x570 net/bridge/br.c:89
 notifier_call_chain kernel/notifier.c:85 [inline]
 raw_notifier_call_chain+0x6f/0x1d0 kernel/notifier.c:453
 call_netdevice_notifiers_info+0xae/0x100 net/core/dev.c:1996
 netdev_state_change+0x80/0xc0 net/core/dev.c:1378
 linkwatch_do_dev+0xb9/0xf0 net/core/link_watch.c:182
 __linkwatch_run_queue+0x284/0x510 net/core/link_watch.c:239
 linkwatch_event+0x40/0x50 net/core/link_watch.c:282
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3310
 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3391
 kthread+0x1d1/0x210 kernel/kthread.c:389
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

value changed: 0x00000000fffff7b9 -> 0x30323d7772203a30

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 177 Comm: kworker/u8:5 Not tainted 6.13.0-rc6-syzkaller-00059-g643e2e259c2b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound linkwatch_event
==================================================================