syzbot


WARNING in udf_prealloc_blocks

Status: auto-obsoleted due to no activity on 2023/08/26 06:23
Subsystems: udf
[Documentation on labels]
Reported-by: syzbot+a637b18b4c36f9892829@syzkaller.appspotmail.com
First crash: 465d, last: 367d
Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly udf report (May 2023) 0 (1) 2023/05/06 08:19
[syzbot] [udf?] WARNING in udf_prealloc_blocks 0 (1) 2023/02/13 12:52
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in udf_prealloc_blocks (2) udf 3 141d 185d 0/26 auto-obsoleted due to no activity on 2024/04/08 05:40
linux-6.1 WARNING in udf_prealloc_blocks 1 5d16h 5d16h 0/3 upstream: reported on 2024/05/13 23:08

Sample crash report:
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 15131 at fs/udf/udfdecl.h:123 udf_add_free_space fs/udf/balloc.c:125 [inline]
WARNING: CPU: 0 PID: 15131 at fs/udf/udfdecl.h:123 udf_bitmap_prealloc_blocks fs/udf/balloc.c:237 [inline]
WARNING: CPU: 0 PID: 15131 at fs/udf/udfdecl.h:123 udf_prealloc_blocks+0xf07/0x1310 fs/udf/balloc.c:704
Modules linked in:
CPU: 0 PID: 15131 Comm: syz-executor.5 Not tainted 6.4.0-rc2-syzkaller-00015-g1b66c114d161 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:udf_updated_lvid fs/udf/udfdecl.h:121 [inline]
RIP: 0010:udf_add_free_space fs/udf/balloc.c:125 [inline]
RIP: 0010:udf_bitmap_prealloc_blocks fs/udf/balloc.c:237 [inline]
RIP: 0010:udf_prealloc_blocks+0xf07/0x1310 fs/udf/balloc.c:704
Code: 01 00 00 0f 85 15 04 00 00 44 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 93 83 8d fe e9 4b f7 ff ff e8 89 83 8d fe <0f> 0b e9 67 f8 ff ff e8 7d 83 8d fe 0f 0b e9 c9 fe ff ff 89 d9 80
RSP: 0018:ffffc900158c6900 EFLAGS: 00010283
RAX: ffffffff82fdf917 RBX: 0000000049afe39b RCX: 0000000000040000
RDX: ffffc9000e8d8000 RSI: 000000000000877e RDI: 000000000000877f
RBP: ffffc900158c6a70 R08: ffffffff82fdf178 R09: ffffed10074a8805
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88804bad601c R15: ffff88802c166678
FS:  00007f3cd0bfd700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f77dab92000 CR3: 0000000019a84000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_prealloc_extents fs/udf/inode.c:1038 [inline]
 inode_getblk fs/udf/inode.c:896 [inline]
 udf_map_block+0x2658/0x4ff0 fs/udf/inode.c:450
 __udf_get_block+0x126/0x410 fs/udf/inode.c:464
 get_more_blocks fs/direct-io.c:637 [inline]
 do_direct_IO fs/direct-io.c:925 [inline]
 __blockdev_direct_IO+0x1ada/0x40e0 fs/direct-io.c:1237
 blockdev_direct_IO include/linux/fs.h:2808 [inline]
 udf_direct_IO+0x13a/0x200 fs/udf/inode.c:313
 generic_file_direct_write+0x208/0x460 mm/filemap.c:3847
 __generic_file_write_iter+0x1c8/0x400 mm/filemap.c:4007
 udf_file_write_iter+0x2fc/0x660 fs/udf/file.c:115
 do_iter_write+0x7b1/0xcb0 fs/read_write.c:860
 iter_file_splice_write+0x843/0xfe0 fs/splice.c:795
 do_splice_from fs/splice.c:873 [inline]
 direct_splice_actor+0xe7/0x1c0 fs/splice.c:1039
 splice_direct_to_actor+0x4c4/0xbd0 fs/splice.c:994
 do_splice_direct+0x283/0x3d0 fs/splice.c:1082
 do_sendfile+0x620/0xff0 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
 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: 0033:0x7f3ccfe8c169
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:00007f3cd0bfd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f3ccffabf80 RCX: 00007f3ccfe8c169
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007f3ccfee7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 000000007fffff2e R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe079121af R14: 00007f3cd0bfd300 R15: 0000000000022000
 </TASK>

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/05/18 06:22 upstream 1b66c114d161 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in udf_prealloc_blocks
2023/05/11 02:38 upstream d295b66a7b66 14b12a99 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in udf_prealloc_blocks
2023/04/30 16:08 upstream 825a0714d2b3 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in udf_prealloc_blocks
2023/04/22 11:40 upstream 8e41e0a57566 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in udf_prealloc_blocks
2023/04/05 03:09 upstream 76f598ba7d8e 831373d3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in udf_prealloc_blocks
2023/02/25 13:34 upstream 8cbd92339db0 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in udf_prealloc_blocks
2023/02/09 12:40 upstream 0983f6bf2bfc 14a312c8 .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.