================================================================================ UBSAN: shift-out-of-bounds in fs/mpage.c:189:40 shift exponent 4294967279 is too large for 64-bit type 'long long unsigned int' CPU: 1 PID: 10138 Comm: systemd-udevd Not tainted 5.13.0-rc5-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+0xa5/0xe6 lib/dump_stack.c:120 ubsan_epilogue+0x5/0x40 lib/ubsan.c:148 __ubsan_handle_shift_out_of_bounds.cold+0x61/0xe9 lib/ubsan.c:327 do_mpage_readpage.cold+0xb8/0x29f fs/mpage.c:189 mpage_readahead+0x2c0/0x6c0 fs/mpage.c:389 read_pages+0x1b0/0x7c0 mm/readahead.c:130 page_cache_ra_unbounded+0x456/0x790 mm/readahead.c:238 do_page_cache_ra mm/readahead.c:267 [inline] force_page_cache_ra+0x301/0x530 mm/readahead.c:299 page_cache_sync_readahead include/linux/pagemap.h:879 [inline] filemap_get_pages+0x258/0x1430 mm/filemap.c:2467 filemap_read+0x261/0xb90 mm/filemap.c:2550 blkdev_read_iter+0xfb/0x180 fs/block_dev.c:1730 call_read_iter include/linux/fs.h:2108 [inline] new_sync_read+0x35a/0x5f0 fs/read_write.c:415 vfs_read+0x264/0x470 fs/read_write.c:496 ksys_read+0xf4/0x1d0 fs/read_write.c:634 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f75979bb210 Code: 73 01 c3 48 8b 0d 98 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d b9 c1 20 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 4e fc ff ff 48 89 04 24 RSP: 002b:00007ffc99d69538 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000559eaa0839b0 RCX: 00007f75979bb210 RDX: 0000000000000400 RSI: 0000559eaa0839d8 RDI: 000000000000000f RBP: 0000559eaa077db0 R08: 00007f75979a6168 R09: 0000000000000430 R10: 000000000000006d R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000400 R14: 0000559eaa077e00 R15: 0000000000000400 ================================================================================