EXT4-fs warning (device loop1): ext4_discard_preallocations:5231: pa_pstart 224 invalid max 2989446808 first_data_block 3363080518 group 4294960881 ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3241! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5588 Comm: syz-executor.1 Not tainted 6.3.0-rc3-syzkaller-00112-gf27e371f2ea8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3241 Code: 4f ff 8b 74 24 04 48 c7 c7 c0 aa 0b 8d 4c 89 f2 e8 3c d4 2d 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 b7 55 4f ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00 RSP: 0018:ffffc900060273b8 EFLAGS: 00010293 RAX: ffffffff823b1769 RBX: 00000000ffffe6f1 RCX: ffff888024491d40 RDX: 0000000000000000 RSI: 00000000ffffe6f1 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff823b1439 R09: fffffbfff205c04c R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100e1bdccf R13: dffffc0000000000 R14: ffff888070d38000 R15: ffff888070dee678 FS: 00007fbab93cf700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f568ca290a0 CR3: 000000007d138000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_load_buddy_gfp+0xc6/0x850 fs/ext4/mballoc.c:1446 ext4_discard_preallocations+0x94d/0x1330 fs/ext4/mballoc.c:5234 ext4_truncate+0x98b/0x1150 fs/ext4/inode.c:4148 ext4_truncate_failed_write fs/ext4/truncate.h:22 [inline] ext4_write_begin+0xa14/0x10a0 fs/ext4/inode.c:1231 ext4_da_write_begin+0x300/0xa40 fs/ext4/inode.c:2891 generic_perform_write+0x300/0x5e0 mm/filemap.c:3926 ext4_buffered_write_iter+0x122/0x3a0 fs/ext4/file.c:289 ext4_file_write_iter+0x1d6/0x1930 call_write_iter include/linux/fs.h:1851 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7b2/0xbb0 fs/read_write.c:584 ksys_write+0x1a0/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbab868c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fbab93cf168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fbab87ac050 RCX: 00007fbab868c0f9 RDX: 000000000208e24b RSI: 0000000020000000 RDI: 0000000000000006 RBP: 00007fbab86e7b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff00177e4f R14: 00007fbab93cf300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3241 Code: 4f ff 8b 74 24 04 48 c7 c7 c0 aa 0b 8d 4c 89 f2 e8 3c d4 2d 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 b7 55 4f ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00 RSP: 0018:ffffc900060273b8 EFLAGS: 00010293 RAX: ffffffff823b1769 RBX: 00000000ffffe6f1 RCX: ffff888024491d40 RDX: 0000000000000000 RSI: 00000000ffffe6f1 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff823b1439 R09: fffffbfff205c04c R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100e1bdccf R13: dffffc0000000000 R14: ffff888070d38000 R15: ffff888070dee678 FS: 00007fbab93cf700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f568ca290a0 CR3: 000000007d138000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400