loop2: detected capacity change from 4 to 0 ================================================================================ UBSAN: shift-out-of-bounds in fs/erofs/super.c:161:3 shift exponent 60 is too large for 32-bit type 'int' CPU: 0 PID: 26673 Comm: syz-executor.2 Not tainted 5.11.0-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 erofs_read_superblock fs/erofs/super.c:161 [inline] erofs_fc_fill_super.cold+0x6c/0x35c fs/erofs/super.c:357 get_tree_bdev+0x440/0x760 fs/super.c:1291 vfs_get_tree+0x89/0x2f0 fs/super.c:1496 do_new_mount fs/namespace.c:2881 [inline] path_mount+0x13ad/0x20c0 fs/namespace.c:3211 do_mount fs/namespace.c:3224 [inline] __do_sys_mount fs/namespace.c:3432 [inline] __se_sys_mount fs/namespace.c:3409 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3409 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x4672ba Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007febcbcaafa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00000000004672ba RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007febcbcab000 RBP: 00007febcbcab040 R08: 00007febcbcab040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007febcbcab000 R15: 0000000020000040 ================================================================================