BTRFS info (device loop3): using crc32c (crc32c-generic) checksum algorithm BTRFS info (device loop3): using free space tree BTRFS info (device loop3): enabling ssd optimizations BTRFS info (device loop3): auto enabling async discard ===================================================== BUG: KMSAN: uninit-value in iterate_inode_refs fs/btrfs/backref.c:2551 [inline] BUG: KMSAN: uninit-value in paths_from_inode+0xd1b/0x1f50 fs/btrfs/backref.c:2685 iterate_inode_refs fs/btrfs/backref.c:2551 [inline] paths_from_inode+0xd1b/0x1f50 fs/btrfs/backref.c:2685 btrfs_ioctl_ino_to_path+0x308/0x7a0 fs/btrfs/ioctl.c:3334 btrfs_ioctl+0x2d8/0x10e0 fs/btrfs/ioctl.c:4589 btrfs_compat_ioctl+0x61/0x70 fs/btrfs/ioctl.c:4701 __do_compat_sys_ioctl fs/ioctl.c:968 [inline] __se_compat_sys_ioctl+0x781/0xfa0 fs/ioctl.c:910 __ia32_compat_sys_ioctl+0x8f/0xd0 fs/ioctl.c:910 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 Uninit was created at: __alloc_pages+0x9f1/0xe80 mm/page_alloc.c:5572 __alloc_pages_bulk+0x1f60/0x2500 mm/page_alloc.c:5497 alloc_pages_bulk_array include/linux/gfp.h:201 [inline] btrfs_alloc_page_array fs/btrfs/extent_io.c:1227 [inline] btrfs_clone_extent_buffer+0x441/0x11d0 fs/btrfs/extent_io.c:4199 iterate_inode_refs fs/btrfs/backref.c:2542 [inline] paths_from_inode+0x22d/0x1f50 fs/btrfs/backref.c:2685 btrfs_ioctl_ino_to_path+0x308/0x7a0 fs/btrfs/ioctl.c:3334 btrfs_ioctl+0x2d8/0x10e0 fs/btrfs/ioctl.c:4589 btrfs_compat_ioctl+0x61/0x70 fs/btrfs/ioctl.c:4701 __do_compat_sys_ioctl fs/ioctl.c:968 [inline] __se_compat_sys_ioctl+0x781/0xfa0 fs/ioctl.c:910 __ia32_compat_sys_ioctl+0x8f/0xd0 fs/ioctl.c:910 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 CPU: 0 PID: 14227 Comm: syz-executor.3 Not tainted 6.2.0-rc3-syzkaller-79342-g219e919e391d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 =====================================================