------------[ cut here ]------------ UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:2644:11 shift exponent 118 is too large for 32-bit type 'int' CPU: 0 UID: 0 PID: 5313 Comm: syz.0.0 Not tainted 6.13.0-rc1-syzkaller-00002-gcdd30ebb1b9f #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_shift_out_of_bounds+0x3c8/0x420 lib/ubsan.c:468 dbSplit+0x21a/0x220 fs/jfs/jfs_dmap.c:2644 dbAllocBits+0x3c2/0x990 fs/jfs/jfs_dmap.c:2237 dbAllocDmap fs/jfs/jfs_dmap.c:2037 [inline] dbAllocDmapLev+0x250/0x4a0 fs/jfs/jfs_dmap.c:1991 dbAlloc+0xa90/0xca0 fs/jfs/jfs_dmap.c:855 extBalloc fs/jfs/jfs_extent.c:326 [inline] extAlloc+0x4f8/0x1010 fs/jfs/jfs_extent.c:122 jfs_get_block+0x41b/0xe60 fs/jfs/inode.c:248 get_more_blocks fs/direct-io.c:648 [inline] do_direct_IO fs/direct-io.c:936 [inline] __blockdev_direct_IO+0x1c87/0x4890 fs/direct-io.c:1243 blockdev_direct_IO include/linux/fs.h:3313 [inline] jfs_direct_IO+0xf7/0x1e0 fs/jfs/inode.c:331 generic_file_direct_write+0x1e6/0x400 mm/filemap.c:3978 __generic_file_write_iter+0x126/0x230 mm/filemap.c:4142 generic_file_write_iter+0xae/0x310 mm/filemap.c:4182 new_sync_write fs/read_write.c:586 [inline] vfs_write+0xaeb/0xd30 fs/read_write.c:679 ksys_write+0x18f/0x2b0 fs/read_write.c:731 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f083757ff19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0836ffe058 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f0837745fa0 RCX: 00007f083757ff19 RDX: 00000000ffffffd7 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007f08375f3986 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f0837745fa0 R15: 00007ffc789ad948 ---[ end trace ]---