Hello, syzbot found the following issue on: HEAD commit: 1e2a199f Merge tag 'spi-fix-v5.11-rc4' of git://git.kernel.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=146e0c94d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=41e68e7e8a23ad09 dashboard link: https://syzkaller.appspot.com/bug?extid=42d8c7c3d3e594b34346 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12166d58d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14dfc294d00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+42d8c7c3d3e594b34346@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================================ UBSAN: shift-out-of-bounds in drivers/media/v4l2-core/v4l2-ctrls.c:2168:36 shift exponent 100 is too large for 64-bit type 'long long unsigned int' CPU: 0 PID: 8469 Comm: syz-executor534 Not tainted 5.11.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:120 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:395 std_validate.cold+0x19/0x1e drivers/media/v4l2-core/v4l2-ctrls.c:2168 validate_new drivers/media/v4l2-core/v4l2-ctrls.c:2477 [inline] set_ctrl+0x207/0x4a0 drivers/media/v4l2-core/v4l2-ctrls.c:4425 set_ctrl_lock drivers/media/v4l2-core/v4l2-ctrls.c:4448 [inline] v4l2_s_ctrl+0x2fd/0x4f0 drivers/media/v4l2-core/v4l2-ctrls.c:4469 v4l_s_ctrl+0x324/0x390 drivers/media/v4l2-core/v4l2-ioctl.c:2253 __video_do_ioctl+0xb94/0xe20 drivers/media/v4l2-core/v4l2-ioctl.c:2993 video_usercopy+0x23d/0x12d0 drivers/media/v4l2-core/v4l2-ioctl.c:3345 v4l2_ioctl+0x1b3/0x250 drivers/media/v4l2-core/v4l2-dev.c:360 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x443ee9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 0f 83 fb d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffe02e7df08 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443ee9 RDX: 0000000020000140 RSI: 00000000c008561c RDI: 0000000000000003 RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 R10: 000000000000000f R11: 0000000000000246 R12: 0000000000401b70 R13: 0000000000401c00 R14: 0000000000000000 R15: 0000000000000000 ================================================================================ --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
