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kernel BUG at fs/ext4/inode.c:2827!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 11935 Comm: syz.8.1381 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:ext4_do_writepages+0x479e/0x47a0 fs/ext4/inode.c:2826
Code: c6 20 63 84 8b e8 62 fc a3 fe 90 0f 0b e8 0a 51 41 ff 4c 89 f7 48 c7 c6 00 68 84 8b e8 4b fc a3 fe 90 0f 0b e8 f3 50 41 ff 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6
RSP: 0018:ffffc9000fb8f4c0 EFLAGS: 00010287
RAX: ffffffff8283cbdd RBX: 0000004210000000 RCX: 0000000000080000
RDX: ffffc9000f611000 RSI: 000000000000002d RDI: 000000000000002e
RBP: ffffc9000fb8f8d0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1008077be3 R12: ffffc9000fb8fb40
R13: 1ffff92001f71f68 R14: 0000004000000000 R15: 0000000000000001
FS:  00007efc0ffd46c0(0000) GS:ffff888125d49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc10015f88 CR3: 000000003f926000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3043
 do_writepages+0x338/0x560 mm/page-writeback.c:2571
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_flush_range+0x1ea/0x2f0 mm/filemap.c:436
 generic_fadvise+0x54d/0x780 mm/fadvise.c:114
 vfs_fadvise mm/fadvise.c:184 [inline]
 ksys_fadvise64_64 mm/fadvise.c:197 [inline]
 __do_sys_fadvise64 mm/fadvise.c:209 [inline]
 __se_sys_fadvise64 mm/fadvise.c:207 [inline]
 __x64_sys_fadvise64+0x148/0x190 mm/fadvise.c:207
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efc11dbde59
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:00007efc0ffd4028 EFLAGS: 00000246 ORIG_RAX: 00000000000000dd
RAX: ffffffffffffffda RBX: 00007efc12046180 RCX: 00007efc11dbde59
RDX: 0000000000000005 RSI: 0000000000000008 RDI: 0000000000000004
RBP: 00007efc11e53e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efc12046218 R14: 00007efc12046180 R15: 00007ffc7a2382c8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x479e/0x47a0 fs/ext4/inode.c:2826
Code: c6 20 63 84 8b e8 62 fc a3 fe 90 0f 0b e8 0a 51 41 ff 4c 89 f7 48 c7 c6 00 68 84 8b e8 4b fc a3 fe 90 0f 0b e8 f3 50 41 ff 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6
RSP: 0018:ffffc9000fb8f4c0 EFLAGS: 00010287
RAX: ffffffff8283cbdd RBX: 0000004210000000 RCX: 0000000000080000
RDX: ffffc9000f611000 RSI: 000000000000002d RDI: 000000000000002e
RBP: ffffc9000fb8f8d0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1008077be3 R12: ffffc9000fb8fb40
R13: 1ffff92001f71f68 R14: 0000004000000000 R15: 0000000000000001
FS:  00007efc0ffd46c0(0000) GS:ffff888125d49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc10015f88 CR3: 000000003f926000 CR4: 00000000003526f0