loop3: detected capacity change from 0 to 64 ------------[ cut here ]------------ WARNING: fs/buffer.c:1183 at mark_buffer_dirty+0x26c/0x490 fs/buffer.c:1183, CPU#1: syz.3.501/8999 Modules linked in: CPU: 1 UID: 0 PID: 8999 Comm: syz.3.501 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : mark_buffer_dirty+0x26c/0x490 fs/buffer.c:1183 lr : mark_buffer_dirty+0x26c/0x490 fs/buffer.c:1183 sp : ffff80009d0273b0 x29: ffff80009d0273b0 x28: ffff0000d20ba158 x27: dfff800000000000 x26: ffff0000e73f4600 x25: ffff0000f7144f38 x24: ffff0000fd49b740 x23: ffff0000d20ba018 x22: ffff0000f8ed0ae0 x21: 1fffe0001a41742b x20: 0000000000000010 x19: ffff0000fd49b740 x18: 00000000ffffffff x17: ffff800093599000 x16: ffff8000805387e4 x15: 0000000000000001 x14: 1fffe0001fa936e8 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 00000000000056cb x9 : ffff8000a6bd4000 x8 : 00000000000056cc x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff0000e73f4800 x4 : ffff0000eacab400 x3 : ffff800080eb0438 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: mark_buffer_dirty+0x26c/0x490 fs/buffer.c:1183 (P) bfs_move_block fs/bfs/file.c:44 [inline] bfs_move_blocks fs/bfs/file.c:57 [inline] bfs_get_block+0x4d8/0x9d4 fs/bfs/file.c:126 __block_write_begin_int+0x53c/0x15e8 fs/buffer.c:2145 block_write_begin+0xa4/0x12c fs/buffer.c:2256 bfs_write_begin+0x48/0xec fs/bfs/file.c:180 generic_perform_write+0x244/0x7bc mm/filemap.c:4314 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4431 generic_file_write_iter+0x10c/0x47c mm/filemap.c:4457 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x540/0xa3c fs/read_write.c:686 ksys_write+0x120/0x210 fs/read_write.c:738 __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:746 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 2872 hardirqs last enabled at (2871): [] bh_lru_install fs/buffer.c:1353 [inline] hardirqs last enabled at (2871): [] find_get_block_common+0x974/0xdec fs/buffer.c:1410 hardirqs last disabled at (2872): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (2736): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (2734): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---