https://bugzilla.kernel.org/show_bug.cgi?id=119481 Bug ID: 119481 Summary: UBSAN: Undefined behaviour in /home/vitti/1tb/vitti/rpmbuild/SOURCES/linux-4.5/fs/ex t4/mballoc.c:2612 Product: File System Version: 2.5 Kernel Version: 4.5.5 Hardware: x86-64 OS: Linux Tree: Fedora Status: NEW Severity: low Priority: P1 Component: ext4 Assignee: fs_ext4@xxxxxxxxxxxxxxxxxxxx Reporter: zeccav@xxxxxxxxx Regression: No At boot time I get the following: Jun 02 06:01:26 nero21 kernel: ================================================================================ Jun 02 06:01:26 nero21 kernel: UBSAN: Undefined behaviour in /home/vitti/1tb/vitti/rpmbuild/SOURCES/linux-4.5/fs/ext4/mballoc.c:2612:15 Jun 02 06:01:26 nero21 kernel: shift exponent 4294967295 is too large for 32-bit type 'int' Jun 02 06:01:26 nero21 kernel: CPU: 0 PID: 754 Comm: mount Not tainted 4.5.5 #1 Jun 02 06:01:26 nero21 kernel: Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./H81M-DGS R2.0, BIOS P1.30 07/02/2014 Jun 02 06:01:26 nero21 kernel: 0000000000000000 000000000b2c65d9 ffff8803ffae7b18 ffffffff820d38ba Jun 02 06:01:26 nero21 kernel: 00000000fffffff3 000000000b2c65d9 ffff8803ffae7b40 ffffffff87f8c73e Jun 02 06:01:26 nero21 kernel: ffff8803ffae7b30 ffffffff8215e6a4 00000000ffffffff ffff8803ffae7bc0 Jun 02 06:01:26 nero21 kernel: Call Trace: Jun 02 06:01:26 nero21 kernel: [<ffffffff820d38ba>] dump_stack+0x74/0xaf Jun 02 06:01:26 nero21 kernel: [<ffffffff8215e6a4>] ubsan_epilogue+0xd/0x3b Jun 02 06:01:26 nero21 kernel: [<ffffffff8215eff5>] __ubsan_handle_shift_out_of_bounds+0xf9/0x14b Jun 02 06:01:26 nero21 kernel: [<ffffffff8142261f>] ? kmem_cache_create+0x11a/0x2b9 Jun 02 06:01:26 nero21 kernel: [<ffffffff816d13ea>] ext4_mb_init+0x83c/0xaa4 Jun 02 06:01:26 nero21 kernel: [<ffffffff816d6109>] ? ext4_setup_system_zone+0x1a1/0x339 Jun 02 06:01:26 nero21 kernel: [<ffffffff816a52a5>] ext4_fill_super+0x401e/0x4e2b Jun 02 06:01:26 nero21 kernel: [<ffffffff820eb296>] ? snprintf+0x49/0x68 Jun 02 06:01:26 nero21 kernel: [<ffffffff816a1287>] ? ext4_calculate_overhead+0x90e/0x90e Jun 02 06:01:26 nero21 kernel: [<ffffffff814d7f9f>] mount_bdev+0x18e/0x1e3 Jun 02 06:01:26 nero21 kernel: [<ffffffff816a1287>] ? ext4_calculate_overhead+0x90e/0x90e Jun 02 06:01:26 nero21 kernel: [<ffffffff8167e035>] ext4_mount+0x15/0x17 Jun 02 06:01:26 nero21 kernel: [<ffffffff814d825e>] mount_fs+0x4b/0x1d1 Jun 02 06:01:26 nero21 kernel: [<ffffffff81508b1b>] vfs_kern_mount+0x6c/0x18d Jun 02 06:01:26 nero21 kernel: [<ffffffff8150a804>] do_mount+0x298/0x168c Jun 02 06:01:26 nero21 kernel: [<ffffffff814d9d90>] ? vfs_fstatat+0x66/0xc0 Jun 02 06:01:26 nero21 kernel: [<ffffffff814126e2>] ? strndup_user+0x4e/0x88 Jun 02 06:01:26 nero21 kernel: [<ffffffff8141265b>] ? memdup_user+0x3b/0x74 Jun 02 06:01:26 nero21 kernel: [<ffffffff8150c13b>] SyS_mount+0x83/0xd0 Jun 02 06:01:26 nero21 kernel: [<ffffffff865aa3ee>] entry_SYSCALL_64_fastpath+0x12/0x71 Jun 02 06:01:26 nero21 kernel: ================================================================================ mballoc.c:2612 is "offset += 1 << (sb->s_blocksize_bits - i);" -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
