WARNING: at ext4_check_map_extents_env, CPU: syz.NUM.NUM/ADDR

WARNING: at ext4_check_map_extents_env, CPU: syz.NUM.NUM/ADDR

[sanan.hasanou]

Good day, dear maintainers,

We found a bug using a modified version of syzkaller.

Kernel Branch: 7.0-rc1
Kernel Config: <https://drive.google.com/open?id=173DLEAEPKPhhR1TcqofdnkLpdoK7PMFl>
Unfortunately, we don't have any reproducer for this bug yet.
Thank you!

Best regards,
Sanan Hasanov

EXT4-fs (loop7): stripe (65535) is not aligned with cluster size (16), stripe is disabled
[EXT4 FS bs=1024, gc=1, bpg=131072, ipg=32, mo=a840e11d, mo2=0002]
------------[ cut here ]------------
WARNING: at ext4_check_map_extents_env+0x471/0x510 fs/ext4/inode.c:436, CPU#1: syz.7.16867/107084
Modules linked in:
CPU: 1 UID: 0 PID: 107084 Comm: syz.7.16867 Not tainted 7.0.0-rc1 #1 PREEMPT(full) 
Hardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:ext4_check_map_extents_env+0x471/0x510 fs/ext4/inode.c:436
Code: ff e9 89 fc ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 05 fd ff ff 4c 89 e7 e8 da d6 ae ff e9 f8 fc ff ff e8 60 a7 42 ff 90 <0f> 0b 90 e9 8a fc ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 25
RSP: 0018:ffffc900015376c8 EFLAGS: 00010283
RAX: ffffffff827faa70 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc900150f1000 RSI: 00000000000052eb RDI: 00000000000052ec
RBP: 0000000000000000 R08: ffff888034a03be7 R09: 1ffff1100694077c
R10: dffffc0000000000 R11: ffffed100694077d R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f2dfb24b6c0(0000) GS:ffff8880d99df000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2dfa45fb85 CR3: 0000000038fd7000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ext4_map_blocks+0x1e9/0x1540 fs/ext4/inode.c:721
 ext4_protect_reserved_inode fs/ext4/block_validity.c:168 [inline]
 ext4_setup_system_zone+0x872/0xa90 fs/ext4/block_validity.c:251
 __ext4_fill_super fs/ext4/super.c:5594 [inline]
 ext4_fill_super+0x534c/0x6390 fs/ext4/super.c:5791
 get_tree_bdev_flags+0x3fe/0x4c0 fs/super.c:1694
 vfs_get_tree+0x8e/0x290 fs/super.c:1754
 fc_mount fs/namespace.c:1193 [inline]
 do_new_mount_fc fs/namespace.c:3760 [inline]
 do_new_mount+0x31f/0xd40 fs/namespace.c:3836
 do_mount fs/namespace.c:4159 [inline]
 __do_sys_mount fs/namespace.c:4348 [inline]
 __se_sys_mount+0x3a1/0x4b0 fs/namespace.c:4325
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x19a/0x7b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x4b/0x53
RIP: 0033:0x7f2dfa3a559e
Code: 0f 1f 40 00 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2dfb24ae28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f2dfb24aec0 RCX: 00007f2dfa3a559e
RDX: 0000200000000080 RSI: 0000200000000040 RDI: 00007f2dfb24ae80
RBP: 0000200000000080 R08: 00007f2dfb24aec0 R09: 0000000000000011
R10: 0000000000000011 R11: 0000000000000246 R12: 0000200000000040
R13: 00007f2dfb24ae80 R14: 000000000000060c R15: 0000200000000180
 </TASK>

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