------------[ cut here ]------------ WARNING: CPU: 1 PID: 21422 at fs/ext4/ext4_jbd2.c:266 __ext4_handle_dirty_metadata+0x3e9/0x4c0 fs/ext4/ext4_jbd2.c:266 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 21422 Comm: syz-executor2 Not tainted 4.9.130+ #47 ffff8801d5297248 ffffffff81b36c99 ffffffff82a38c20 00000000ffffffff 0000000000000000 0000000000000001 000000000000010a ffff8801d5297308 ffffffff813f6835 0000000041b58ab3 ffffffff82e297ab ffffffff813f6676 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bf/0x39f kernel/panic.c:179 [] __warn.cold.9+0xc1/0x17f kernel/panic.c:542 [] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585 [] __ext4_handle_dirty_metadata+0x3e9/0x4c0 fs/ext4/ext4_jbd2.c:266 [] write_end_fn+0x71/0xa0 fs/ext4/inode.c:1310 [] ext4_walk_page_buffers+0x9c/0x1a0 fs/ext4/inode.c:1030 [] ext4_journalled_write_end+0x311/0x1230 fs/ext4/inode.c:1464 [] generic_perform_write+0x34c/0x500 mm/filemap.c:2764 [] __generic_file_write_iter+0x352/0x540 mm/filemap.c:2878 [] ext4_file_write_iter+0x63d/0xd70 fs/ext4/file.c:165 [] vfs_iter_write+0x2d7/0x450 fs/read_write.c:390 [] iter_file_splice_write+0x5fb/0xb30 fs/splice.c:768 [] do_splice_from fs/splice.c:870 [inline] [] direct_splice_actor+0x128/0x190 fs/splice.c:1037 [] splice_direct_to_actor+0x2c1/0x7e0 fs/splice.c:992 [] do_splice_direct+0x1a3/0x270 fs/splice.c:1080 [] do_sendfile+0x4f0/0xc30 fs/read_write.c:1393 [] SYSC_sendfile64 fs/read_write.c:1448 [inline] [] SyS_sendfile64+0xd1/0x160 fs/read_write.c:1440 [] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Kernel Offset: disabled Rebooting in 86400 seconds..