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linux-mm@kvack.org, phillip@squashfs.org.uk, squashfs-devel@lists.sourceforge.net, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam05 X-Stat-Signature: 886gmuxjjhwu4854jr6n9dccy95beffs X-Rspamd-Queue-Id: 0C3FE1C0009 X-Rspam-User: X-HE-Tag: 1735626059-734232 X-HE-Meta: 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version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=152792f8580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12053adf980000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-d6ef8b40.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/38a9784dd46d/vmlinux-d6ef8b40.xz kernel image: https://storage.googleapis.com/syzbot-assets/8d1728b3051d/bzImage-d6ef8b40.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/7dec22cf3b31/mount_2.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a6bec34b1270dec555f4@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 8 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5309 at fs/exec.c:911 do_open_execat+0x376/0x480 fs/exec.c:911 Modules linked in: CPU: 0 UID: 0 PID: 5309 Comm: syz-executor209 Not tainted 6.13.0-rc4-syzkaller-00054-gd6ef8b40d075 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:do_open_execat+0x376/0x480 fs/exec.c:911 Code: 74 3e 49 81 ff 01 f0 ff ff 73 35 e8 74 af 86 ff 4c 89 ff e8 cc 89 fe ff eb 2b e8 65 af 86 ff e9 05 fe ff ff e8 5b af 86 ff 90 <0f> 0b 90 eb c7 e8 50 af 86 ff 48 c7 c3 e6 ff ff ff 4d 85 ff 75 c2 RSP: 0018:ffffc9000d007d00 EFLAGS: 00010293 RAX: ffffffff8218c4d5 RBX: 000000000000e000 RCX: ffff88801cfba440 RDX: 0000000000000000 RSI: 000000000000e000 RDI: 0000000000008000 RBP: ffffc9000d007dc8 R08: ffffffff8218c336 R09: 0000000000000000 R10: ffffc9000d007b60 R11: fffff52001a00f6e R12: ffffc9000d007d40 R13: 1ffff92001a00fa4 R14: ffff8880475a4578 R15: ffff88803fa8e000 FS: 0000555571145380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff7c8c00000 CR3: 0000000043846000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: alloc_bprm+0x28/0xa30 fs/exec.c:1505 do_execveat_common+0x18c/0x6f0 fs/exec.c:1900 do_execveat fs/exec.c:2034 [inline] __do_sys_execveat fs/exec.c:2108 [inline] __se_sys_execveat fs/exec.c:2102 [inline] __x64_sys_execveat+0xc4/0xe0 fs/exec.c:2102 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff7d11e1639 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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:00007fff49e02ef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000142 RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007ff7d11e1639 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 00000000ffffff9c RBP: 00007ff7d1254610 R08: 0000000000001000 R09: 00007fff49e030c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fff49e030b8 R14: 0000000000000001 R15: 0000000000000001 --- 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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup