EXT4-fs warning (device loop2): ext4_es_cache_extent:1079: inode #18: comm syz.2.2047: ES cache extent failed: add [58,6,250,0x2] conflict with existing [27,-28,576460752303423487,0x18]
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kernel BUG at fs/ext4/extents_status.c:1044!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 14513 Comm: syz.2.2047 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:ext4_es_cache_extent+0x6ed/0x7e0 fs/ext4/extents_status.c:1044
Code: 24 28 e8 46 f6 15 00 48 83 c4 30 e9 ad fa ff ff e8 98 8f a9 ff e9 87 fa ff ff e8 be 8f a9 ff e9 28 fc ff ff e8 04 01 3e ff 90 <0f> 0b e8 fc 00 3e ff 90 0f 0b 90 e9 20 fd ff ff e8 ee 00 3e ff 49
RSP: 0018:ffffc9000547ebd0 EFLAGS: 00010287
RAX: 000000000005b036 RBX: 1ffff92000a8fd7f RCX: ffffc90010152000
RDX: 0000000000080000 RSI: ffffffff82ca983c RDI: ffff8880281e9e80
RBP: ffff8880587cec20 R08: 0000000000000004 R09: 0000000000000040
R10: 000000000000002f R11: 0000000000000000 R12: 0000000000000040
R13: 00000000fffffff0 R14: 0000000000000008 R15: 0000000000000001
FS:  00007f5eca7d56c0(0000) GS:ffff888124448000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000197030 CR3: 000000007da7d000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_cache_extents+0x236/0x2e0 fs/ext4/extents.c:539
 __read_extent_tree_block+0x540/0x670 fs/ext4/extents.c:586
 ext4_find_extent+0x510/0xa30 fs/ext4/extents.c:939
 ext4_ext_map_blocks+0x20a/0x59a0 fs/ext4/extents.c:4261
 ext4_map_create_blocks+0xec/0x5e0 fs/ext4/inode.c:616
 ext4_map_blocks+0x46b/0xd30 fs/ext4/inode.c:809
 _ext4_get_block+0x250/0x5a0 fs/ext4/inode.c:909
 ext4_get_block_unwritten+0x29/0x110 fs/ext4/inode.c:942
 ext4_block_write_begin+0x7fd/0x1530 fs/ext4/inode.c:1196
 ext4_write_begin+0x919/0x1820 fs/ext4/inode.c:1357
 ext4_da_write_begin+0x2a7/0xd70 fs/ext4/inode.c:3123
 generic_perform_write+0x292/0xa40 mm/filemap.c:4319
 ext4_buffered_write_iter+0x119/0x440 fs/ext4/file.c:300
 ext4_file_write_iter+0xa2f/0x1d40 fs/ext4/file.c:719
 iter_file_splice_write+0x830/0x10a0 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x192/0x6c0 fs/splice.c:1159
 splice_direct_to_actor+0x345/0xa30 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x174/0x240 fs/splice.c:1228
 do_sendfile+0xadc/0xe20 fs/read_write.c:1372
 __do_sys_sendfile64 fs/read_write.c:1433 [inline]
 __se_sys_sendfile64 fs/read_write.c:1419 [inline]
 __x64_sys_sendfile64+0x1d8/0x220 fs/read_write.c:1419
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5ecc59c799
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:00007f5eca7d5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f5ecc816090 RCX: 00007f5ecc59c799
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005
RBP: 00007f5ecc632c99 R08: 0000000000000000 R09: 0000000000000000
R10: 000000007ffff000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5ecc816128 R14: 00007f5ecc816090 R15: 00007ffda0bc3788
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_es_cache_extent+0x6ed/0x7e0 fs/ext4/extents_status.c:1044
Code: 24 28 e8 46 f6 15 00 48 83 c4 30 e9 ad fa ff ff e8 98 8f a9 ff e9 87 fa ff ff e8 be 8f a9 ff e9 28 fc ff ff e8 04 01 3e ff 90 <0f> 0b e8 fc 00 3e ff 90 0f 0b 90 e9 20 fd ff ff e8 ee 00 3e ff 49
RSP: 0018:ffffc9000547ebd0 EFLAGS: 00010287
RAX: 000000000005b036 RBX: 1ffff92000a8fd7f RCX: ffffc90010152000
RDX: 0000000000080000 RSI: ffffffff82ca983c RDI: ffff8880281e9e80
RBP: ffff8880587cec20 R08: 0000000000000004 R09: 0000000000000040
R10: 000000000000002f R11: 0000000000000000 R12: 0000000000000040
R13: 00000000fffffff0 R14: 0000000000000008 R15: 0000000000000001
FS:  00007f5eca7d56c0(0000) GS:ffff888124448000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0bd9703e9c CR3: 000000007da7d000 CR4: 0000000000350ef0