batman_adv: batadv0: Local translation table size (88) exceeds maximum packet size (-320); Ignoring new local tt entry: 33:33:ff:bf:05:00
==================================================================
BUG: KCSAN: data-race in data_push_tail / number

write to 0xffffffff88bbd930 of 1 bytes by task 29 on cpu 1:
 number+0x8b5/0xa90 lib/vsprintf.c:564
 vsnprintf+0xa44/0xe30 lib/vsprintf.c:2914
 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
 kauditd_printk_skb kernel/audit.c:546 [inline]
 kauditd_hold_skb+0x1a3/0x1b0 kernel/audit.c:581
 kauditd_send_queue+0x288/0x2e0 kernel/audit.c:766
 kauditd_thread+0x42a/0x650 kernel/audit.c:890
 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

read to 0xffffffff88bbd930 of 8 bytes by task 6147 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
 batadv_tt_local_add+0xf09/0x1010 net/batman-adv/translation-table.c:659
 batadv_mcast_mla_tt_add net/batman-adv/multicast.c:728 [inline]
 __batadv_mcast_mla_update net/batman-adv/multicast.c:922 [inline]
 batadv_mcast_mla_update+0x1112/0x1700 net/batman-adv/multicast.c:949
 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: 0x000000010000009b -> 0x3128746964756120

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 6147 Comm: kworker/u8:26 Tainted: G        W          6.13.0-rc1-syzkaller-00036-g5076001689e4 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_mcast_mla_update
==================================================================
batman_adv: batadv0: Local translation table size (88) exceeds maximum packet size (-320); Ignoring new local tt entry: 33:33:ff:bf:05:00
batman_adv: batadv0: Local translation table size (88) exceeds maximum packet size (-320); Ignoring new local tt entry: 33:33:ff:bf:05:00
batman_adv: batadv0: Local translation table size (88) exceeds maximum packet size (-320); Ignoring new local tt entry: 33:33:ff:bf:05:00
batman_adv: batadv0: Local translation table size (88) exceeds maximum packet size (-320); Ignoring new local tt entry: 33:33:ff:bf:05:00
batman_adv: batadv0: Local translation table size (88) exceeds maximum packet size (-320); Ignoring new local tt entry: 33:33:ff:bf:05:00
batman_adv: batadv0: Local translation table size (88) exceeds maximum packet size (-320); Ignoring new local tt entry: 33:33:ff:bf:05:00
batman_adv: batadv0: Local translation table size (88) exceeds maximum packet size (-320); Ignoring new local tt entry: 33:33:ff:bf:05:00
batman_adv: batadv0: Local translation table size (88) exceeds maximum packet size (-320); Ignoring new local tt entry: 33:33:ff:bf:05:00
batman_adv: batadv0: Local translation table size (88) exceeds maximum packet size (-320); Ignoring new local tt entry: 33:33:ff:bf:05:00