EXT4-fs error (device loop9) in ext4_reserve_inode_write:5835: Corrupt filesystem EXT4-fs error (device loop9): ext4_dirty_inode:6039: inode #15: comm syz.9.577: mark_inode_dirty error ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x1390/0x3d30 fs/ext4/xattr.c:1747 Read of size 18446744073709551576 at addr ffff888071c492d0 by task syz.9.577/6219 CPU: 0 PID: 6219 Comm: syz.9.577 Not tainted 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 print_address_description+0x60/0x2d0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0xdf/0x130 mm/kasan/report.c:451 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x27b/0x290 mm/kasan/generic.c:189 memmove+0x25/0x60 mm/kasan/shadow.c:54 ext4_xattr_set_entry+0x1390/0x3d30 fs/ext4/xattr.c:1747 ext4_xattr_ibody_set+0x112/0x330 fs/ext4/xattr.c:2252 ext4_xattr_move_to_block fs/ext4/xattr.c:2639 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2707 [inline] ext4_expand_extra_isize_ea+0xf9a/0x19a0 fs/ext4/xattr.c:2799 __ext4_expand_extra_isize+0x301/0x3e0 fs/ext4/inode.c:5886 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5929 [inline] __ext4_mark_inode_dirty+0x469/0x700 fs/ext4/inode.c:6007 ext4_setattr+0x13b7/0x19e0 fs/ext4/inode.c:5548 notify_change+0xbcd/0xee0 fs/attr.c:505 do_truncate+0x197/0x220 fs/open.c:65 handle_truncate fs/namei.c:3265 [inline] do_open fs/namei.c:3612 [inline] path_openat+0x28af/0x2f30 fs/namei.c:3742 do_filp_open+0x1b3/0x3e0 fs/namei.c:3769 do_sys_openat2+0x142/0x4a0 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_creat fs/open.c:1345 [inline] __se_sys_creat fs/open.c:1339 [inline] __x64_sys_creat+0x8c/0xb0 fs/open.c:1339 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f74c3e42929 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:00007f74c1c89038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f74c406a080 RCX: 00007f74c3e42929 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00002000000000c0 RBP: 00007f74c3ec4b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f74c406a080 R15: 00007ffd15cd0868 The buggy address belongs to the page: page:ffffea0001c71240 refcount:2 mapcount:0 mapping:ffff88814088cf30 index:0x2 pfn:0x71c49 memcg:ffff88805accc000 aops:def_blk_aops ino:700009 flags: 0xfff00000002036(referenced|uptodate|lru|active|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000002036 ffffea0001c40d48 ffff88801e249030 ffff88814088cf30 raw: 0000000000000002 ffff88805ecd8828 00000002ffffffff ffff88805accc000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x108c40(GFP_NOFS|__GFP_NOFAIL|__GFP_HARDWALL), pid 6215, ts 144898380990, free_ts 144796462312 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5474 __page_cache_alloc+0xd2/0x3f0 mm/filemap.c:1022 pagecache_get_page+0x986/0xef0 mm/filemap.c:1940 find_or_create_page include/linux/pagemap.h:420 [inline] grow_dev_page fs/buffer.c:949 [inline] grow_buffers fs/buffer.c:1014 [inline] __getblk_slow fs/buffer.c:1041 [inline] __getblk_gfp+0x249/0xb70 fs/buffer.c:1336 sb_getblk_gfp include/linux/buffer_head.h:368 [inline] ext4_sb_breadahead_unmovable+0x68/0xe0 fs/ext4/super.c:239 __ext4_get_inode_loc+0x97b/0xcd0 fs/ext4/inode.c:4404 __ext4_get_inode_loc_noinmem fs/ext4/inode.c:4434 [inline] __ext4_iget+0x447/0x3cc0 fs/ext4/inode.c:4684 ext4_fill_super+0x77d5/0x9a00 fs/ext4/super.c:4841 mount_bdev+0x287/0x3c0 fs/super.c:1400 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x24a/0xa40 fs/namespace.c:3010 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3538 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317 free_unref_page+0x94/0x280 mm/page_alloc.c:3396 __vunmap+0x8ab/0xa40 mm/vmalloc.c:2621 hid_open_report+0xa4a/0xeb0 drivers/hid/hid-core.c:1300 hid_parse include/linux/hid.h:1067 [inline] pyra_probe+0xa8/0x760 drivers/hid/hid-roccat-pyra.c:455 hid_device_probe+0x271/0x360 drivers/hid/hid-core.c:2309 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x284/0xc80 drivers/base/dd.c:595 __driver_probe_device+0x18c/0x330 drivers/base/dd.c:755 driver_probe_device+0x4f/0x420 drivers/base/dd.c:785 __device_attach_driver+0x2b0/0x500 drivers/base/dd.c:907 bus_for_each_drv+0x175/0x200 drivers/base/bus.c:429 __device_attach+0x29b/0x460 drivers/base/dd.c:979 bus_probe_device+0xbc/0x1e0 drivers/base/bus.c:489 device_add+0xa00/0xfb0 drivers/base/core.c:3412 hid_add_device+0x389/0x530 drivers/hid/hid-core.c:2461 usbhid_probe+0xb92/0xf40 drivers/hid/usbhid/hid-core.c:1424 Memory state around the buggy address: ffff888071c49180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888071c49200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888071c49280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888071c49300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888071c49380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================