gfs2: fsid=loop0: Trying to join cluster "lock_nolock", "loop0" gfs2: fsid=loop0: Now mounting FS (format 1801)... ================================================================================ UBSAN: shift-out-of-bounds in fs/gfs2/ops_fstype.c:295:19 shift exponent 4294967287 is too large for 64-bit type 'long unsigned int' CPU: 2 PID: 12432 Comm: syz-executor.0 Not tainted 6.0.0-rc5-syzkaller-00094-ga335366bad13 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 ubsan_epilogue+0xb/0x50 lib/ubsan.c:151 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x187 lib/ubsan.c:322 gfs2_read_sb fs/gfs2/ops_fstype.c:295 [inline] init_sb.cold+0x19/0x109 fs/gfs2/ops_fstype.c:485 gfs2_fill_super+0x1836/0x27f0 fs/gfs2/ops_fstype.c:1207 get_tree_bdev+0x440/0x760 fs/super.c:1323 gfs2_get_tree+0x4a/0x270 fs/gfs2/ops_fstype.c:1323 vfs_get_tree+0x89/0x2f0 fs/super.c:1530 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1326/0x1e20 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f9f25a8a93a Code: 48 c7 c2 b8 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9f26c04f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f9f25a8a93a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f9f26c04fe0 RBP: 00007f9f26c05020 R08: 00007f9f26c05020 R09: 0000000020000000 R10: 0000000000000008 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f9f26c04fe0 R15: 0000000020000040 ================================================================================