EXT4-fs (loop2): bad geometry: first data block 4294966271 is beyond end of filesystem (512) ================================================================== BUG: KCSAN: data-race in data_push_tail / vsnprintf write to 0xffffffff86d7a45b of 1 bytes by task 5664 on cpu 0: vsnprintf+0xe8f/0xed0 va_format lib/vsprintf.c:1694 [inline] pointer+0x48c/0x830 lib/vsprintf.c:2435 vsnprintf+0x8a1/0xed0 lib/vsprintf.c:2809 vscnprintf+0x29/0x80 lib/vsprintf.c:2908 printk_sprint kernel/printk/printk.c:2076 [inline] vprintk_store+0x638/0xbb0 kernel/printk/printk.c:2186 vprintk_emit+0xac/0x3c0 kernel/printk/printk.c:2229 vprintk_default+0x22/0x30 kernel/printk/printk.c:2256 vprintk+0x7f/0x90 kernel/printk/printk_safe.c:50 _printk+0x76/0x97 kernel/printk/printk.c:2266 __ext4_msg+0x118/0x120 fs/ext4/super.c:922 ext4_fill_super+0x192e/0x5870 fs/ext4/super.c:4344 mount_bdev+0x1e8/0x290 fs/super.c:1370 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610 vfs_get_tree+0x4a/0x1a0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x11cf/0x1c40 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount+0x24b/0x2f0 fs/namespace.c:3516 __x64_sys_mount+0x63/0x70 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffffffff86d7a458 of 8 bytes by task 5661 on cpu 1: data_make_reusable kernel/printk/printk_ringbuffer.c:587 [inline] data_push_tail+0x138/0x470 kernel/printk/printk_ringbuffer.c:672 data_alloc+0xbc/0x2b0 kernel/printk/printk_ringbuffer.c:1043 prb_reserve+0x920/0xbf0 kernel/printk/printk_ringbuffer.c:1549 vprintk_store+0x560/0xbb0 kernel/printk/printk.c:2176 vprintk_emit+0xac/0x3c0 kernel/printk/printk.c:2229 vprintk_default+0x22/0x30 kernel/printk/printk.c:2256 vprintk+0x7f/0x90 kernel/printk/printk_safe.c:50 _printk+0x76/0x97 kernel/printk/printk.c:2266 __ext4_msg+0x118/0x120 fs/ext4/super.c:922 ext4_fill_super+0x21b8/0x5870 mount_bdev+0x1e8/0x290 fs/super.c:1370 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610 vfs_get_tree+0x4a/0x1a0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x11cf/0x1c40 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount+0x24b/0x2f0 fs/namespace.c:3516 __x64_sys_mount+0x63/0x70 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000001000092f6 -> 0x0000000100797274 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 5661 Comm: syz-executor.2 Not tainted 5.16.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================