ext4 filesystem being mounted at /154/file0 supports timestamps until 2038-01-19 (0x7fffffff) ================================================================== BUG: KCSAN: data-race in data_push_tail / string write to 0xffffffff88b9006a of 1 bytes by task 296 on cpu 0: string_nocheck lib/vsprintf.c:650 [inline] string+0x16c/0x210 lib/vsprintf.c:728 vsnprintf+0xa09/0xe30 lib/vsprintf.c:2803 va_format lib/vsprintf.c:1683 [inline] pointer+0x8a1/0xd20 lib/vsprintf.c:2434 vsnprintf+0x861/0xe30 lib/vsprintf.c:2807 vscnprintf+0x42/0x90 lib/vsprintf.c:2909 printk_sprint+0x30/0x2d0 kernel/printk/printk.c:2197 vprintk_store+0x570/0x810 kernel/printk/printk.c:2311 vprintk_emit+0x15e/0x680 kernel/printk/printk.c:2383 vprintk_default+0x26/0x30 kernel/printk/printk.c:2422 vprintk+0x75/0x80 kernel/printk/printk_safe.c:68 _printk+0x7a/0xa0 kernel/printk/printk.c:2432 __netdev_printk+0x2d1/0x3e0 net/core/dev.c:11821 netdev_info+0x99/0xc0 net/core/dev.c:11868 __dev_set_allmulti+0x15b/0x240 net/core/dev.c:8701 dev_set_allmulti+0x1f/0x30 net/core/dev.c:8727 nbp_delete_promisc net/bridge/br_if.c:252 [inline] del_nbp+0x68/0x770 net/bridge/br_if.c:340 br_dev_delete+0x4e/0xe0 net/bridge/br_if.c:386 br_net_exit_batch_rtnl+0xca/0x170 net/bridge/br.c:369 cleanup_net+0x3d9/0x810 net/core/net_namespace.c:619 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 read to 0xffffffff88b90068 of 8 bytes by task 5816 on cpu 1: 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+0x53f/0x810 kernel/printk/printk.c:2301 vprintk_emit+0x15e/0x680 kernel/printk/printk.c:2383 vprintk_default+0x26/0x30 kernel/printk/printk.c:2422 vprintk+0x75/0x80 kernel/printk/printk_safe.c:68 _printk+0x7a/0xa0 kernel/printk/printk.c:2432 mnt_warn_timestamp_expiry+0x1cd/0x210 fs/namespace.c:2961 do_new_mount_fc fs/namespace.c:3442 [inline] do_new_mount+0x316/0x690 fs/namespace.c:3509 path_mount+0x49b/0xb30 fs/namespace.c:3834 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4055 [inline] __se_sys_mount+0x27c/0x2d0 fs/namespace.c:4032 __x64_sys_mount+0x67/0x80 fs/namespace.c:4032 x64_sys_call+0x203e/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:166 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 value changed: 0x00000000ffffe267 -> 0x6c6c61207466656c Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 5816 Comm: syz.3.726 Not tainted 6.12.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ================================================================== EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000.