EXT4-fs (loop5): pa ffff8881004820a8: logic 0, phys. 193, len 32
EXT4-fs error (device loop5): ext4_mb_release_inode_pa:4359: group 0, free 7, pa_free 16
------------[ cut here ]------------
kernel BUG at fs/ext4/mballoc.c:4332!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 618 Comm: syz.5.54 Not tainted 5.10.239-syzkaller-1007860-g6de38b5f6c2b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:ext4_mb_release_inode_pa+0x9d0/0x9e0 fs/ext4/mballoc.c:4332
Code: 80 c2 03 38 c2 0f 8c 4e fe ff ff 48 89 df 41 89 ce e8 e4 69 cc ff 44 89 f1 e9 3b fe ff ff e8 d7 79 92 ff 0f 0b e8 d0 79 92 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41 57
RSP: 0018:ffffc900014e6860 EFLAGS: 00010293

RAX: ffffffff81d11b70 RBX: 0000000000000060 RCX: ffff8881292b4f00
RDX: 0000000000000000 RSI: 0000000000000060 RDI: 0000000000000000
RBP: ffffc900014e69b0 R08: 0000000000000004 R09: 0000000000000003
R10: fffff5200029cd28 R11: 1ffff9200029cd28 R12: dffffc0000000000
R13: 00000000000000fa R14: 00000000000000fa R15: ffff88810ce96b28
FS:  00007f73af3016c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200201ff CR3: 00000001136fd000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_mb_discard_group_preallocations+0xba1/0xdd0 fs/ext4/mballoc.c:4478
 ext4_mb_discard_preallocations fs/ext4/mballoc.c:5044 [inline]
 ext4_mb_discard_preallocations_should_retry+0x156/0x600 fs/ext4/mballoc.c:5065
 ext4_mb_new_blocks+0x3142/0x42f0 fs/ext4/mballoc.c:5268
 ext4_alloc_branch fs/ext4/indirect.c:340 [inline]
 ext4_ind_map_blocks+0xf32/0x2130 fs/ext4/indirect.c:633
 ext4_map_blocks+0x911/0x1bc0 fs/ext4/inode.c:676
 _ext4_get_block+0x1bb/0x4b0 fs/ext4/inode.c:817
 ext4_get_block+0x39/0x50 fs/ext4/inode.c:834
 ext4_block_write_begin+0x567/0x1330 fs/ext4/inode.c:1101
 ext4_write_begin+0x651/0x1550 fs/ext4/ext4_jbd2.h:-1
 ext4_da_write_begin+0x455/0xe80 fs/ext4/inode.c:3033
 generic_perform_write+0x2be/0x510 mm/filemap.c:3509
 ext4_buffered_write_iter+0x4b8/0x640 fs/ext4/file.c:271
 ext4_file_write_iter+0x536/0x1980 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+0x725/0xd60 fs/read_write.c:605
 ksys_write+0x140/0x240 fs/read_write.c:658
 __do_sys_write fs/read_write.c:670 [inline]
 __se_sys_write fs/read_write.c:667 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:667
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f73af880719
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f73af301038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f73afa37f80 RCX: 00007f73af880719
RDX: 0000000000043451 RSI: 0000000020000200 RDI: 0000000000000007
RBP: 00007f73af8f332e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f73afa37f80 R15: 00007ffd455d0dd8
Modules linked in:
---[ end trace b920f1466a8ed809 ]---
RIP: 0010:ext4_mb_release_inode_pa+0x9d0/0x9e0 fs/ext4/mballoc.c:4332
Code: 80 c2 03 38 c2 0f 8c 4e fe ff ff 48 89 df 41 89 ce e8 e4 69 cc ff 44 89 f1 e9 3b fe ff ff e8 d7 79 92 ff 0f 0b e8 d0 79 92 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41 57
RSP: 0018:ffffc900014e6860 EFLAGS: 00010293
RAX: ffffffff81d11b70 RBX: 0000000000000060 RCX: ffff8881292b4f00
RDX: 0000000000000000 RSI: 0000000000000060 RDI: 0000000000000000
RBP: ffffc900014e69b0 R08: 0000000000000004 R09: 0000000000000003
R10: fffff5200029cd28 R11: 1ffff9200029cd28 R12: dffffc0000000000
R13: 00000000000000fa R14: 00000000000000fa R15: ffff88810ce96b28
FS:  00007f73af3016c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200201ff CR3: 00000001136fd000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400