------------[ cut here ]------------
kernel BUG at fs/ext4/extents_status.c:968!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4133 Comm: syz.6.978 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:ext4_es_cache_extent+0x57b/0x5d0 fs/ext4/extents_status.c:968
Code: e8 03 42 80 3c 38 00 74 08 48 89 df e8 7e 3e d2 ff 48 8b 3b 48 8b 74 24 28 48 8d 54 24 60 e8 fc 72 0c 00 eb 13 e8 55 bd 97 ff <0f> 0b e8 4e bd 97 ff eb 28 e8 47 bd 97 ff 31 f6 65 ff 0d 7a 74 35
RSP: 0018:ffffc90001486b40 EFLAGS: 00010283
RAX: ffffffff81ccf8fb RBX: 0000000000000095 RCX: 0000000000080000
RDX: ffffc9000613c000 RSI: 000000000002053c RDI: 000000000002053d
RBP: ffffc90001486c48 R08: ffffc90001486bb7 R09: ffffc90001486ba0
R10: dffffc0000000000 R11: fffff52000290d77 R12: ffff8881081f93c8
R13: 47ffffffffffffff R14: 0000000000000093 R15: dffffc0000000000
FS:  00007fed027896c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4f2a19a000 CR3: 0000000114ef9000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_cache_extents fs/ext4/extents.c:516 [inline]
 __read_extent_tree_block+0x44b/0x790 fs/ext4/extents.c:563
 ext4_find_extent+0x8b9/0xe20 fs/ext4/extents.c:928
 ext4_ext_map_blocks+0x20b/0x5dd0 fs/ext4/extents.c:4160
 ext4_map_blocks+0x985/0x1bd0 fs/ext4/inode.c:674
 _ext4_get_block+0x1d1/0x4e0 fs/ext4/inode.c:817
 ext4_get_block_unwritten+0x2a/0x40 fs/ext4/inode.c:848
 ext4_block_write_begin+0x573/0x1340 fs/ext4/inode.c:1101
 ext4_write_begin+0x67e/0x1690 fs/ext4/ext4_jbd2.h:-1
 ext4_da_write_begin+0x478/0xf10 fs/ext4/inode.c:3033
 generic_perform_write+0x2ce/0x540 mm/filemap.c:3509
 ext4_buffered_write_iter+0x4b8/0x640 fs/ext4/file.c:271
 ext4_file_write_iter+0x53f/0x1980 fs/ext4/file.c:-1
 call_write_iter include/linux/fs.h:2066 [inline]
 new_sync_write fs/read_write.c:518 [inline]
 vfs_write+0x758/0xdc0 fs/read_write.c:605
 ksys_pwrite64 fs/read_write.c:712 [inline]
 __do_sys_pwrite64 fs/read_write.c:722 [inline]
 __se_sys_pwrite64 fs/read_write.c:719 [inline]
 __x64_sys_pwrite64+0x197/0x220 fs/read_write.c:719
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fed03d2e799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fed02789028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fed03fa7fa0 RCX: 00007fed03d2e799
RDX: 00000000200000c1 RSI: 00002000000000c0 RDI: 0000000000000009
RBP: 00007fed03dc4bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000009000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fed03fa8038 R14: 00007fed03fa7fa0 R15: 00007ffcc4beadc8
Modules linked in:
---[ end trace c4bb5398b095385e ]---
RIP: 0010:ext4_es_cache_extent+0x57b/0x5d0 fs/ext4/extents_status.c:968
Code: e8 03 42 80 3c 38 00 74 08 48 89 df e8 7e 3e d2 ff 48 8b 3b 48 8b 74 24 28 48 8d 54 24 60 e8 fc 72 0c 00 eb 13 e8 55 bd 97 ff <0f> 0b e8 4e bd 97 ff eb 28 e8 47 bd 97 ff 31 f6 65 ff 0d 7a 74 35
RSP: 0018:ffffc90001486b40 EFLAGS: 00010283
RAX: ffffffff81ccf8fb RBX: 0000000000000095 RCX: 0000000000080000
RDX: ffffc9000613c000 RSI: 000000000002053c RDI: 000000000002053d
RBP: ffffc90001486c48 R08: ffffc90001486bb7 R09: ffffc90001486ba0
R10: dffffc0000000000 R11: fffff52000290d77 R12: ffff8881081f93c8
R13: 47ffffffffffffff R14: 0000000000000093 R15: dffffc0000000000
FS:  00007fed027896c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f47a8c512f8 CR3: 0000000114ef9000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400