syzbot


WARNING in udf_prealloc_blocks (2)

Status: auto-obsoleted due to no activity on 2024/04/08 05:40
Subsystems: udf
[Documentation on labels]
Reported-by: syzbot+cc2b732891efbf755b78@syzkaller.appspotmail.com
First crash: 197d, last: 149d
Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly udf report (Jan 2024) 0 (1) 2024/01/10 20:36
[syzbot] [udf?] WARNING in udf_prealloc_blocks (2) 0 (1) 2023/11/16 09:53
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in udf_prealloc_blocks udf 7 375d 469d 0/26 auto-obsoleted due to no activity on 2023/08/26 06:23
linux-6.1 WARNING in udf_prealloc_blocks 1 14d 14d 0/3 upstream: reported on 2024/05/13 23:08

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 12378 at fs/udf/udfdecl.h:123 udf_updated_lvid fs/udf/udfdecl.h:121 [inline]
WARNING: CPU: 0 PID: 12378 at fs/udf/udfdecl.h:123 udf_add_free_space fs/udf/balloc.c:121 [inline]
WARNING: CPU: 0 PID: 12378 at fs/udf/udfdecl.h:123 udf_table_prealloc_blocks fs/udf/balloc.c:572 [inline]
WARNING: CPU: 0 PID: 12378 at fs/udf/udfdecl.h:123 udf_prealloc_blocks+0xf16/0x1320 fs/udf/balloc.c:705
Modules linked in:
CPU: 0 PID: 12378 Comm: syz-executor.1 Not tainted 6.7.0-rc7-syzkaller-00041-gf016f7547aee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:udf_updated_lvid fs/udf/udfdecl.h:121 [inline]
RIP: 0010:udf_add_free_space fs/udf/balloc.c:121 [inline]
RIP: 0010:udf_table_prealloc_blocks fs/udf/balloc.c:572 [inline]
RIP: 0010:udf_prealloc_blocks+0xf16/0x1320 fs/udf/balloc.c:705
Code: d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c3 b9 85 fe e9 4b f7 ff ff e8 b9 b9 85 fe 90 0f 0b 90 e9 65 f8 ff ff e8 ab b9 85 fe 90 <0f> 0b 90 e9 c5 fe ff ff 89 d9 80 e1 07 fe c1 38 c1 0f 8c 04 f2 ff
RSP: 0018:ffffc90015b87180 EFLAGS: 00010246
RAX: ffffffff8308c0b5 RBX: 0000000096865a29 RCX: 0000000000040000
RDX: ffffc9000478a000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90015b872f0 R08: ffffffff8308bf76 R09: 1ffffffff1e01845
R10: dffffc0000000000 R11: fffffbfff1e01846 R12: ffff88801ce898c0
R13: dffffc0000000000 R14: ffff8880820c401c R15: ffff888037e30630
FS:  00007f1d2e21e6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1e49b9d988 CR3: 0000000029370000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_prealloc_extents fs/udf/inode.c:1032 [inline]
 inode_getblk fs/udf/inode.c:890 [inline]
 udf_map_block+0x285d/0x5560 fs/udf/inode.c:444
 __udf_get_block+0x126/0x410 fs/udf/inode.c:458
 __block_write_begin_int+0x54d/0x1ad0 fs/buffer.c:2119
 __block_write_begin fs/buffer.c:2168 [inline]
 block_write_begin+0x9b/0x1e0 fs/buffer.c:2227
 udf_write_begin+0x10d/0x1a0 fs/udf/inode.c:261
 generic_perform_write+0x31b/0x630 mm/filemap.c:3927
 udf_file_write_iter+0x2fd/0x660 fs/udf/file.c:111
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x792/0xb20 fs/read_write.c:584
 ksys_write+0x1a0/0x2c0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f1d2d47cce9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1d2e21e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1d2d59bf80 RCX: 00007f1d2d47cce9
RDX: 00000000000ffe00 RSI: 0000000020004200 RDI: 0000000000000006
RBP: 00007f1d2d4c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1d2d59bf80 R15: 00007ffe6bc72d38
 </TASK>

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/12/30 05:40 upstream f016f7547aee fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in udf_prealloc_blocks
2023/12/04 15:48 upstream 33cc938e65a9 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in udf_prealloc_blocks
2023/11/12 09:51 upstream 1b907d050735 6d6dbf8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in udf_prealloc_blocks
* Struck through repros no longer work on HEAD.