EXT4-fs error (device loop4): ext4_validate_block_bitmap:418: comm syz.4.1567: bg 0: block 234: padding at end of block bitmap is not set
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kernel BUG at fs/ext4/indirect.c:532!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 7885 Comm: syz.4.1567 Not tainted 5.4.290-syzkaller-00001-g986c38813dff #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:ext4_ind_map_blocks+0x2c6c/0x2e90 fs/ext4/indirect.c:532
Code: 00 74 08 4c 89 ff e8 a3 ad ce ff 49 83 7c 24 18 00 0f 84 57 01 00 00 e8 22 0d 9e ff 49 83 c4 18 e9 69 ff ff ff e8 14 0d 9e ff <0f> 0b e8 0d 0d 9e ff 0f 0b e8 16 19 74 ff 65 44 8b 35 66 a3 3a 7e
RSP: 0018:ffff8881de6b7220 EFLAGS: 00010293
RAX: ffffffff81c78dbc RBX: 0000000000080000 RCX: ffff8881dd1ecec0
RDX: 0000000000000000 RSI: 0000000000080000 RDI: 0000000000000000
RBP: ffff8881de6b7510 R08: ffffffff81c76318 R09: ffffed1039963c8e
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1103bcd6e68
R13: ffff8881de6b7708 R14: 0000000c00080000 R15: dffffc0000000000
FS:  000055558de90500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f55a48a2da0 CR3: 00000001e491e000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_map_blocks+0x9d6/0x1ba0 fs/ext4/inode.c:663
 _ext4_get_block+0x21b/0x610 fs/ext4/inode.c:802
 ext4_get_block+0x39/0x50 fs/ext4/inode.c:819
 __block_write_begin_int+0x5e0/0x1680 fs/buffer.c:1980
 __block_write_begin fs/buffer.c:2030 [inline]
 block_page_mkwrite+0x1fc/0x260 fs/buffer.c:2492
 ext4_page_mkwrite+0xbda/0x1350 fs/ext4/inode.c:6485
 do_page_mkwrite mm/memory.c:2364 [inline]
 wp_page_shared+0x471/0x740 mm/memory.c:2691
 do_wp_page+0xa3c/0xb10 mm/memory.c:2787
 handle_pte_fault mm/memory.c:4075 [inline]
 __handle_mm_fault mm/memory.c:4183 [inline]
 handle_mm_fault+0x1888/0x4920 mm/memory.c:4220
 do_user_addr_fault arch/x86/mm/fault.c:1444 [inline]
 __do_page_fault+0x515/0xb90 arch/x86/mm/fault.c:1505
 do_page_fault+0x37/0x360 arch/x86/mm/fault.c:1529
 page_fault+0x2f/0x40 arch/x86/entry/entry_64.S:1206
RIP: 0033:0x7f7b7d6ab6ab
Code: fa 10 73 2d 83 fa 08 73 46 83 fa 04 73 16 83 fa 01 7c 10 8a 0e 74 0a 0f b7 74 16 fe 66 89 74 17 fe 88 0f c3 8b 4c 16 fc 8b 36 <89> 4c 17 fc 89 37 c3 c5 fa 6f 06 c5 fa 6f 4c 16 f0 c5 fa 7f 07 c5
RSP: 002b:00007ffcf10284b8 EFLAGS: 00010202
RAX: 0000200000000040 RBX: 0000000000000004 RCX: 0000000000746174
RDX: 0000000000000005 RSI: 0000000074617473 RDI: 0000200000000040
RBP: 00007f7b7d90cba0 R08: 00007f7b7d555000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000009 R12: 00007f7b7d90b08c
R13: 00007f7b7d90b080 R14: fffffffffffffffe R15: 00007ffcf10285d0
Modules linked in:
---[ end trace 9d032175b1669f78 ]---
RIP: 0010:ext4_ind_map_blocks+0x2c6c/0x2e90 fs/ext4/indirect.c:532
Code: 00 74 08 4c 89 ff e8 a3 ad ce ff 49 83 7c 24 18 00 0f 84 57 01 00 00 e8 22 0d 9e ff 49 83 c4 18 e9 69 ff ff ff e8 14 0d 9e ff <0f> 0b e8 0d 0d 9e ff 0f 0b e8 16 19 74 ff 65 44 8b 35 66 a3 3a 7e
RSP: 0018:ffff8881de6b7220 EFLAGS: 00010293
RAX: ffffffff81c78dbc RBX: 0000000000080000 RCX: ffff8881dd1ecec0
RDX: 0000000000000000 RSI: 0000000000080000 RDI: 0000000000000000
RBP: ffff8881de6b7510 R08: ffffffff81c76318 R09: ffffed1039963c8e
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1103bcd6e68
R13: ffff8881de6b7708 R14: 0000000c00080000 R15: dffffc0000000000
FS:  000055558de90500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000020 CR3: 00000001e491e000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400