loop4: detected capacity change from 65534 to 0 ================================================================================ UBSAN: shift-out-of-bounds in fs/jfs/jfs_mount.c:373:25 shift exponent 128 is too large for 32-bit type 'int' CPU: 0 PID: 24521 Comm: syz-executor.4 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+0x183/0x22e lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:148 [inline] __ubsan_handle_shift_out_of_bounds+0x432/0x4d0 lib/ubsan.c:395 chkSuper+0xceb/0xd00 fs/jfs/jfs_mount.c:373 jfs_mount+0x49/0x300 fs/jfs/jfs_mount.c:82 jfs_fill_super+0x5a4/0xa90 fs/jfs/super.c:562 mount_bdev+0x26c/0x3a0 fs/super.c:1366 legacy_get_tree+0xea/0x180 fs/fs_context.c:592 vfs_get_tree+0x86/0x270 fs/super.c:1496 do_new_mount fs/namespace.c:2881 [inline] path_mount+0x1937/0x2c50 fs/namespace.c:3211 do_mount fs/namespace.c:3224 [inline] __do_sys_mount fs/namespace.c:3432 [inline] __se_sys_mount+0x2f9/0x3b0 fs/namespace.c:3409 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x460c6a Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 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 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007fd3ffa24a78 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fd3ffa24b10 RCX: 0000000000460c6a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fd3ffa24ad0 RBP: 00007fd3ffa24ad0 R08: 00007fd3ffa24b10 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020065600 ================================================================================