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charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: d07b43284ab3 Merge tag 'for-linus' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1397f4fd980000 kernel config: https://syzkaller.appspot.com/x/.config?x=7229118d88b4a71b dashboard link: https://syzkaller.appspot.com/bug?extid=f3fff775402751ebb471 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1306b191980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11905bd3980000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-d07b4328.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/91ceec6e19d3/vmlinux-d07b4328.xz kernel image: https://storage.googleapis.com/syzbot-assets/be11646b0c05/bzImage-d07b4328.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/0847e1dfc637/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f3fff775402751ebb471@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 32768 ------------[ cut here ]------------ UBSAN: shift-out-of-bounds in fs/ocfs2/super.c:2360:4 shift exponent 1548 is too large for 32-bit type 'int' CPU: 0 UID: 0 PID: 5093 Comm: syz-executor251 Not tainted 6.11.0-rc3-syzkaller-00060-gd07b43284ab3 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_shift_out_of_bounds+0x3c8/0x420 lib/ubsan.c:468 ocfs2_verify_volume fs/ocfs2/super.c:2360 [inline] ocfs2_sb_probe fs/ocfs2/super.c:792 [inline] ocfs2_fill_super+0x106e/0x5880 fs/ocfs2/super.c:988 mount_bdev+0x20a/0x2d0 fs/super.c:1679 legacy_get_tree+0xee/0x190 fs/fs_context.c:662 vfs_get_tree+0x90/0x2a0 fs/super.c:1800 do_new_mount+0x2be/0xb40 fs/namespace.c:3472 do_mount fs/namespace.c:3812 [inline] __do_sys_mount fs/namespace.c:4020 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3997 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: 0033:0x7f76bb986dea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007ffe83d62948 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffe83d62960 RCX: 00007f76bb986dea RDX: 0000000020004480 RSI: 00000000200044c0 RDI: 00007ffe83d62960 RBP: 0000000000000004 R08: 00007ffe83d629a0 R09: 000000000000446c R10: 0000000002800400 R11: 0000000000000282 R12: 0000000002800400 R13: 00007ffe83d629a0 R14: 0000000000000003 R15: 0000000001000000 ---[ end trace ]--- --- 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