ERROR: (device loop0): remounting filesystem as read-only jfs_rename: dtInsert returned -EIO ERROR: (device loop0): dbAllocBits: leaf page corrupt ------------[ cut here ]------------ UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:3025:47 shift exponent 32 is too large for 32-bit type 'u32' (aka 'unsigned int') CPU: 0 UID: 0 PID: 5213 Comm: syz-executor267 Not tainted 6.11.0-rc2-syzkaller-00239-g34ac1e82e5a7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_shift_out_of_bounds+0x3c8/0x420 lib/ubsan.c:468 dbFindBits+0x11a/0x1d0 fs/jfs/jfs_dmap.c:3025 dbAllocDmapLev+0x1e9/0x4a0 fs/jfs/jfs_dmap.c:1985 dbAllocCtl+0x113/0x920 fs/jfs/jfs_dmap.c:1825 dbAllocAG+0x28f/0x10b0 fs/jfs/jfs_dmap.c:1364 dbDiscardAG+0x352/0xa20 fs/jfs/jfs_dmap.c:1613 jfs_ioc_trim+0x433/0x670 fs/jfs/jfs_discard.c:100 jfs_ioctl+0x2d0/0x3e0 fs/jfs/ioctl.c:131 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 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: 0033:0x7fbb2632d059 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe933950b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fbb26376095 RCX: 00007fbb2632d059 RDX: 0000000020000080 RSI: 00000000c0185879 RDI: 0000000000000006 RBP: 00007fbb263a85f0 R08: 000055555ee264c0 R09: 000055555ee264c0 R10: 000055555ee264c0 R11: 0000000000000246 R12: 00007ffe933950e0 R13: 00007ffe93395308 R14: 431bde82d7b634db R15: 00007fbb2637603b ---[ end trace ]---