Messages in this thread | | | Date | Wed, 08 Feb 2023 20:57:46 -0800 | Subject | [syzbot] [udf?] WARNING in udf_expand_dir_adinicb | From | syzbot <> |
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Hello,
syzbot found the following issue on:
HEAD commit: 4fafd96910ad Add linux-next specific files for 20230203 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=14f92223480000 kernel config: https://syzkaller.appspot.com/x/.config?x=1d2fba7d42502ca4 dashboard link: https://syzkaller.appspot.com/bug?extid=111eaa994ff74f8d440f compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16fa724b480000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13558fad480000
Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/348cc2da441a/disk-4fafd969.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e2dedc500f12/vmlinux-4fafd969.xz kernel image: https://storage.googleapis.com/syzbot-assets/fae710d9ebd8/bzImage-4fafd969.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/f80faa04675e/mount_0.gz
The issue was bisected to:
commit 0aba4860b0d0216a1a300484ff536171894d49d8 Author: Jan Kara <jack@suse.cz> Date: Tue Dec 20 11:38:45 2022 +0000
udf: Allocate name buffer in directory iterator on heap
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15d3f2bb480000 final oops: https://syzkaller.appspot.com/x/report.txt?x=17d3f2bb480000 console output: https://syzkaller.appspot.com/x/log.txt?x=13d3f2bb480000
IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+111eaa994ff74f8d440f@syzkaller.appspotmail.com Fixes: 0aba4860b0d0 ("udf: Allocate name buffer in directory iterator on heap")
RSP: 002b:00007ffedf8b9a28 EFLAGS: 00000246 ORIG_RAX: 0000000000000085 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcaa035f9a9 RDX: 0000000000000701 RSI: 0000000000000000 RDI: 0000000020000200 RBP: 00007ffedf8b9a50 R08: 0000000000000002 R09: 00007ffedf8b9a60 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 00007ffedf8b9a90 R14: 00007ffedf8b9a70 R15: 000000000000000c </TASK> ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5101 at fs/udf/namei.c:220 udf_expand_dir_adinicb+0xbd8/0xe00 fs/udf/namei.c:220 Modules linked in: CPU: 0 PID: 5101 Comm: syz-executor305 Not tainted 6.2.0-rc6-next-20230203-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:udf_expand_dir_adinicb+0xbd8/0xe00 fs/udf/namei.c:220 Code: 89 44 24 18 e8 49 21 ee fe 4c 8b 44 24 18 e9 c9 f9 ff ff e8 8a 1d 9f fe 4c 89 ef e8 b2 99 0d ff e9 20 f8 ff ff e8 78 1d 9f fe <0f> 0b e9 fd fd ff ff 41 bc 8b ff ff ff e9 56 f6 ff ff 41 bc f4 ff RSP: 0018:ffffc90003d0f858 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000fffffff4 RCX: 0000000000000000 RDX: ffff88801d95d7c0 RSI: ffffffff82e54d28 RDI: 0000000000000005 RBP: ffff8880741e0158 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000fffffff4 R11: 0000000000000000 R12: 00000000fffffff4 R13: ffff888074218910 R14: ffffc90003d0f928 R15: 0000000000000000 FS: 0000555555946300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcaa0334610 CR3: 0000000017f44000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> udf_fiiter_add_entry+0xcf2/0x1080 fs/udf/namei.c:270 udf_add_nondir+0xdb/0x3a0 fs/udf/namei.c:361 udf_create+0xda/0x120 fs/udf/namei.c:394 vfs_create fs/namei.c:3118 [inline] vfs_create+0x1a9/0x3a0 fs/namei.c:3102 do_mknodat+0x3d9/0x530 fs/namei.c:3966 __do_sys_mknod fs/namei.c:3999 [inline] __se_sys_mknod fs/namei.c:3997 [inline] __x64_sys_mknod+0x11e/0x180 fs/namei.c:3997 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fcaa035f9a9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffedf8b9a28 EFLAGS: 00000246 ORIG_RAX: 0000000000000085 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcaa035f9a9 RDX: 0000000000000701 RSI: 0000000000000000 RDI: 0000000020000200 RBP: 00007ffedf8b9a50 R08: 0000000000000002 R09: 00007ffedf8b9a60 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 00007ffedf8b9a90 R14: 00007ffedf8b9a70 R15: 000000000000000c </TASK>
--- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
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