EXT4-fs (loop0): bad geometry: first data block 65535 is beyond end of filesystem (512)
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BUG: KCSAN: data-race in data_push_tail / number

write to 0xffffffff8415990a of 1 bytes by task 21634 on cpu 1:
 number+0x836/0xb50 lib/vsprintf.c:556
 vsnprintf+0xb6d/0xed0 lib/vsprintf.c:2863
 va_format lib/vsprintf.c:1694 [inline]
 pointer+0x47b/0x820 lib/vsprintf.c:2427
 vsnprintf+0x8a1/0xed0 lib/vsprintf.c:2801
 vscnprintf+0x29/0x80 lib/vsprintf.c:2900
 printk_sprint kernel/printk/printk.c:2075 [inline]
 vprintk_store+0x5c2/0xb10 kernel/printk/printk.c:2185
 vprintk_emit+0xac/0x380 kernel/printk/printk.c:2228
 vprintk_default+0x22/0x30 kernel/printk/printk.c:2255
 vprintk+0x7f/0x90 kernel/printk/printk_safe.c:50
 _printk+0x62/0x87 kernel/printk/printk.c:2265
 __ext4_msg+0x103/0x110 fs/ext4/super.c:914
 ext4_check_descriptors fs/ext4/super.c:2947 [inline]
 ext4_fill_super+0x44b0/0x7810 fs/ext4/super.c:4566
 mount_bdev+0x1e8/0x290 fs/super.c:1368
 ext4_mount+0x2d/0x40 fs/ext4/super.c:6505
 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610
 vfs_get_tree+0x4a/0x1a0 fs/super.c:1498
 do_new_mount fs/namespace.c:2987 [inline]
 path_mount+0x11ca/0x1d00 fs/namespace.c:3317
 do_mount fs/namespace.c:3330 [inline]
 __do_sys_mount fs/namespace.c:3538 [inline]
 __se_sys_mount+0x23d/0x2e0 fs/namespace.c:3515
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3515
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffffff84159908 of 8 bytes by task 21628 on cpu 0:
 data_make_reusable kernel/printk/printk_ringbuffer.c:587 [inline]
 data_push_tail+0x125/0x460 kernel/printk/printk_ringbuffer.c:672
 data_alloc+0xbc/0x2b0 kernel/printk/printk_ringbuffer.c:1043
 prb_reserve+0x8f0/0xbc0 kernel/printk/printk_ringbuffer.c:1549
 vprintk_store+0x4ef/0xb10 kernel/printk/printk.c:2175
 vprintk_emit+0xac/0x380 kernel/printk/printk.c:2228
 vprintk_default+0x22/0x30 kernel/printk/printk.c:2255
 vprintk+0x7f/0x90 kernel/printk/printk_safe.c:50
 _printk+0x62/0x87 kernel/printk/printk.c:2265
 __ext4_msg+0x103/0x110 fs/ext4/super.c:914
 ext4_fill_super+0x2ed3/0x7810 fs/ext4/super.c:4483
 mount_bdev+0x1e8/0x290 fs/super.c:1368
 ext4_mount+0x2d/0x40 fs/ext4/super.c:6505
 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610
 vfs_get_tree+0x4a/0x1a0 fs/super.c:1498
 do_new_mount fs/namespace.c:2987 [inline]
 path_mount+0x11ca/0x1d00 fs/namespace.c:3317
 do_mount fs/namespace.c:3330 [inline]
 __do_sys_mount fs/namespace.c:3538 [inline]
 __se_sys_mount+0x23d/0x2e0 fs/namespace.c:3515
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3515
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x000000010000e6e3 -> 0x6e6920746f6e2030

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 21628 Comm: syz-executor.0 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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