erofs: read_super, device -> /dev/loop3
erofs: options -> 
FAT-fs (loop1): bogus logical sector size 519
================================================================================
UBSAN: Undefined behaviour in drivers/staging/erofs/super.c:122:3
shift exponent 34 is too large for 32-bit type 'int'
CPU: 0 PID: 6712 Comm: syz-executor.3 Not tainted 4.19.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAT-fs (loop1): Can't find a valid FAT filesystem
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x22c/0x33e lib/dump_stack.c:118
 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
 __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422
 superblock_read drivers/staging/erofs/super.c:122 [inline]
 erofs_read_super drivers/staging/erofs/super.c:356 [inline]
 erofs_fill_super+0x397/0x12fc drivers/staging/erofs/super.c:499
 mount_bdev+0x2fc/0x3b0 fs/super.c:1158
 erofs_mount+0x8c/0xc0 drivers/staging/erofs/super.c:512
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x460bca
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 87 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ba 87 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f64d0a49a88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f64d0a49b20 RCX: 0000000000460bca
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f64d0a49ae0
RBP: 00007f64d0a49ae0 R08: 00007f64d0a49b20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020010a00
================================================================================
erofs: blksize 4 isn't supported on this platform
EXT4-fs (loop4): inodes count not valid: 45794848 vs 32
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: blksize 4 isn't supported on this platform
XFS (loop0): Invalid superblock magic number
EXT4-fs (loop4): inodes count not valid: 45794848 vs 32
FAT-fs (loop1): bogus logical sector size 520
FAT-fs (loop1): Can't find a valid FAT filesystem
EXT4-fs (loop4): inodes count not valid: 45795104 vs 32
FAT-fs (loop1): bogus logical sector size 520
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: blksize 1024 isn't supported on this platform
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: blksize 1024 isn't supported on this platform
FAT-fs (loop1): bogus logical sector size 521
FAT-fs (loop1): Can't find a valid FAT filesystem
EXT4-fs (loop4): inodes count not valid: 45795360 vs 32
FAT-fs (loop1): bogus logical sector size 521
FAT-fs (loop1): Can't find a valid FAT filesystem
XFS (loop0): Invalid superblock magic number
EXT4-fs (loop4): inodes count not valid: 45795616 vs 32
FAT-fs (loop1): bogus logical sector size 527
erofs: read_super, device -> /dev/loop3
erofs: options -> 
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: blksize 8388608 isn't supported on this platform
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: blksize 8388608 isn't supported on this platform
EXT4-fs (loop4): inodes count not valid: 45795872 vs 32
EXT4-fs (loop4): inodes count not valid: 45795872 vs 32
FAT-fs (loop1): bogus logical sector size 528
FAT-fs (loop1): Can't find a valid FAT filesystem
FAT-fs (loop1): bogus logical sector size 528
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: blksize 33554432 isn't supported on this platform
EXT4-fs (loop4): inodes count not valid: 45796128 vs 32
XFS (loop0): Invalid superblock magic number
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: blksize 33554432 isn't supported on this platform
FAT-fs (loop1): bogus logical sector size 545
FAT-fs (loop1): Can't find a valid FAT filesystem
EXT4-fs (loop4): inodes count not valid: 45796384 vs 32
EXT4-fs (loop4): inodes count not valid: 45796384 vs 32
FAT-fs (loop1): bogus logical sector size 546
erofs: read_super, device -> /dev/loop3
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: options -> 
erofs: blksize 2147483648 isn't supported on this platform
erofs: read_super, device -> /dev/loop3
erofs: options -> 
FAT-fs (loop1): bogus logical sector size 546
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: blksize 2147483648 isn't supported on this platform
XFS (loop0): Invalid superblock magic number
EXT4-fs (loop4): inodes count not valid: 45796640 vs 32
FAT-fs (loop1): bogus logical sector size 547
FAT-fs (loop1): Can't find a valid FAT filesystem
EXT4-fs (loop4): inodes count not valid: 45796640 vs 32
FAT-fs (loop1): bogus logical sector size 547
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: blksize 4 isn't supported on this platform
erofs: read_super, device -> /dev/loop3
EXT4-fs (loop4): inodes count not valid: 45796896 vs 32
erofs: options -> 
erofs: blksize 4 isn't supported on this platform
FAT-fs (loop1): bogus logical sector size 548
EXT4-fs (loop4): inodes count not valid: 45796896 vs 32
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: root inode @ nid 36
erofs: mounted on /dev/loop3 with opts: .
EXT4-fs (loop4): inodes count not valid: 45797152 vs 32
erofs: unmounted for /dev/loop3
FAT-fs (loop1): bogus logical sector size 549
EXT4-fs (loop4): inodes count not valid: 45797152 vs 32
FAT-fs (loop1): Can't find a valid FAT filesystem
XFS (loop0): Invalid superblock magic number
FAT-fs (loop1): bogus logical sector size 549
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: root inode @ nid 36
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: mounted on /dev/loop3 with opts: .
erofs: unmounted for /dev/loop3
EXT4-fs (loop4): inodes count not valid: 45797408 vs 32
EXT4-fs (loop4): inodes count not valid: 45797408 vs 32
FAT-fs (loop1): bogus logical sector size 550
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: root inode @ nid 36
erofs: mounted on /dev/loop3 with opts: .
erofs: unmounted for /dev/loop3
EXT4-fs (loop4): inodes count not valid: 45797664 vs 32
FAT-fs (loop1): bogus logical sector size 551
EXT4-fs (loop4): inodes count not valid: 45797664 vs 32
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: root inode @ nid 36
erofs: mounted on /dev/loop3 with opts: .
FAT-fs (loop1): bogus logical sector size 551
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: unmounted for /dev/loop3
EXT4-fs (loop4): inodes count not valid: 45797920 vs 32
XFS (loop0): Invalid superblock magic number
EXT4-fs (loop4): inodes count not valid: 45797920 vs 32
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: root inode @ nid 36
erofs: mounted on /dev/loop3 with opts: .
FAT-fs (loop1): bogus logical sector size 552
erofs: unmounted for /dev/loop3
FAT-fs (loop1): Can't find a valid FAT filesystem
EXT4-fs (loop4): inodes count not valid: 45798176 vs 32
FAT-fs (loop1): bogus logical sector size 552
FAT-fs (loop1): Can't find a valid FAT filesystem
EXT4-fs (loop4): inodes count not valid: 45798176 vs 32
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: root inode @ nid 36
erofs: mounted on /dev/loop3 with opts: .
erofs: unmounted for /dev/loop3
EXT4-fs (loop4): inodes count not valid: 45798432 vs 32
FAT-fs (loop1): bogus logical sector size 553
FAT-fs (loop1): Can't find a valid FAT filesystem
EXT4-fs (loop4): inodes count not valid: 45798432 vs 32
FAT-fs (loop1): bogus logical sector size 553
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: root inode @ nid 36
erofs: mounted on /dev/loop3 with opts: .
XFS (loop0): Invalid superblock magic number
erofs: unmounted for /dev/loop3
FAT-fs (loop1): bogus logical sector size 556
EXT4-fs (loop4): inodes count not valid: 45798688 vs 32
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: read_super, device -> /dev/loop3
FAT-fs (loop1): bogus logical sector size 556
erofs: options -> 
EXT4-fs (loop4): inodes count not valid: 45798688 vs 32
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: root inode @ nid 36
erofs: mounted on /dev/loop3 with opts: .
erofs: unmounted for /dev/loop3
FAT-fs (loop1): bogus logical sector size 584
FAT-fs (loop1): Can't find a valid FAT filesystem
EXT4-fs (loop4): inodes count not valid: 45798944 vs 32
erofs: read_super, device -> /dev/loop3
erofs: options -> 
FAT-fs (loop1): bogus logical sector size 588
erofs: root inode @ nid 36
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: mounted on /dev/loop3 with opts: .
erofs: unmounted for /dev/loop3
FAT-fs (loop1): bogus logical sector size 588
FAT-fs (loop1): Can't find a valid FAT filesystem
EXT4-fs (loop4): inodes count not valid: 45799200 vs 32
EXT4-fs (loop4): inodes count not valid: 45799200 vs 32
XFS (loop0): Invalid superblock magic number
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: root inode @ nid 36
erofs: mounted on /dev/loop3 with opts: .
FAT-fs (loop1): bogus logical sector size 616
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: unmounted for /dev/loop3
EXT4-fs (loop4): inodes count not valid: 45799456 vs 32
FAT-fs (loop1): bogus logical sector size 616
FAT-fs (loop1): Can't find a valid FAT filesystem
erofs: read_super, device -> /dev/loop3
erofs: options -> 
erofs: root inode @ nid 36
erofs: mounted on /dev/loop3 with opts: .
FAT-fs (loop1): bogus logical sector size 620
FAT-fs (loop1): Can't find a valid FAT filesystem
EXT4-fs (loop4): inodes count not valid: 45799712 vs 32
erofs: unmounted for /dev/loop3
FAT-fs (loop1): bogus logical sector size 620
FAT-fs (loop1): Can't find a valid FAT filesystem