loop1: detected capacity change from 0 to 32768 ------------[ cut here ]------------ UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:2639:11 shift exponent 80 is too large for 32-bit type 'int' CPU: 1 PID: 7632 Comm: syz-executor.1 Tainted: G W 6.10.0-rc3-syzkaller-gac2193b4b460 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_shift_out_of_bounds+0x2f4/0x36c lib/ubsan.c:468 dbSplit+0x1d4/0x1d8 fs/jfs/jfs_dmap.c:2639 dbAllocBits+0x434/0x8d8 fs/jfs/jfs_dmap.c:2191 dbAllocDmap fs/jfs/jfs_dmap.c:2032 [inline] dbAllocNear+0x224/0x334 fs/jfs/jfs_dmap.c:1258 dbAlloc+0x8b4/0xb68 fs/jfs/jfs_dmap.c:843 diNewExt+0x7c0/0x2904 fs/jfs/jfs_imap.c:2258 diAllocExt fs/jfs/jfs_imap.c:1949 [inline] diAllocAG+0xa68/0x1b8c fs/jfs/jfs_imap.c:1666 diAlloc+0x17c/0x15c4 fs/jfs/jfs_imap.c:1587 ialloc+0x84/0x78c fs/jfs/jfs_inode.c:56 jfs_mkdir+0x190/0x9f4 fs/jfs/namei.c:225 vfs_mkdir+0x27c/0x410 fs/namei.c:4131 do_mkdirat+0x248/0x574 fs/namei.c:4154 __do_sys_mkdirat fs/namei.c:4169 [inline] __se_sys_mkdirat fs/namei.c:4167 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4167 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 ---[ end trace ]--- find_entry called with index >= next_index find_entry called with index >= next_index find_entry called with index >= next_index find_entry called with index >= next_index find_entry called with index >= next_index