------------[ cut here ]------------ WARNING: CPU: 1 PID: 7348 at fs/buffer.c:1183 mark_buffer_dirty+0x284/0x490 fs/buffer.c:1183 Modules linked in: CPU: 1 UID: 0 PID: 7348 Comm: syz.1.216 Not tainted syzkaller #0 PREEMPT 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+0x284/0x490 fs/buffer.c:1183 lr : mark_buffer_dirty+0x284/0x490 fs/buffer.c:1183 sp : ffff8000a5736270 x29: ffff8000a5736270 x28: ffff0000d6ca6158 x27: dfff800000000000 x26: ffff0000fa6de800 x25: ffff0000f72072a8 x24: ffff0000c158d2b8 x23: ffff0000d6ca6018 x22: ffff0000cc07d000 x21: 1fffe0001ad94c2b x20: 0000000000000010 x19: ffff0000c158d2b8 x18: 00000000ffffffff x17: ffff800093335000 x16: ffff80008052b3c8 x15: 0000000000000001 x14: 1fffe000182b1a57 x13: 0000000000000000 x12: 0000000000000000 x11: ffff6000182b1a58 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000c698bd80 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff0000fa6dea00 x4 : ffff0000e2f03400 x3 : ffff800080e79e20 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: mark_buffer_dirty+0x284/0x490 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+0xa0/0x128 fs/buffer.c:2256 bfs_write_begin+0x48/0xec fs/bfs/file.c:180 generic_perform_write+0x244/0x7bc mm/filemap.c:4254 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4371 generic_file_write_iter+0x10c/0x47c mm/filemap.c:4397 __kernel_write_iter+0x310/0x738 fs/read_write.c:619 __kernel_write+0xe0/0x130 fs/read_write.c:639 __dump_emit fs/coredump.c:1220 [inline] dump_emit+0x220/0x31c fs/coredump.c:1258 elf_core_dump+0x250c/0x2fbc fs/binfmt_elf.c:2090 coredump_write+0x1084/0x1900 fs/coredump.c:1049 vfs_coredump+0x182c/0x2354 fs/coredump.c:1170 get_signal+0xe38/0x12f8 kernel/signal.c:3019 arch_do_signal_or_restart+0x1c0/0x4414 arch/arm64/kernel/signal.c:1619 exit_to_user_mode_loop+0x7c/0x178 kernel/entry/common.c:40 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_da+0x174/0x230 arch/arm64/kernel/entry-common.c:541 el0t_64_sync_handler+0x90/0x12c arch/arm64/kernel/entry-common.c:746 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 572 hardirqs last enabled at (571): [] bh_lru_install fs/buffer.c:1353 [inline] hardirqs last enabled at (571): [] find_get_block_common+0x970/0xde8 fs/buffer.c:1410 hardirqs last disabled at (572): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (328): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (326): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---