loop0: detected capacity change from 0 to 64 ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= minix: Unknown parameter 'd?yY^)bbzX%}opH{OJRT bWdPVFR }!i Dv;xDBkgje{2؄-;' loop0: detected capacity change from 0 to 1024 EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. loop0: detected capacity change from 1024 to 1023 ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1767 Read of size 18446744073709551600 at addr ffff8880138082b8 by task syz.0.0/5317 CPU: 0 UID: 0 PID: 5317 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_address_description+0x55/0x1e0 mm/kasan/report.c:378 print_report+0x58/0x70 mm/kasan/report.c:482 kasan_report+0x117/0x150 mm/kasan/report.c:595 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x264/0x2c0 mm/kasan/generic.c:200 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94 ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1767 ext4_xattr_ibody_set+0x262/0x710 fs/ext4/xattr.c:2277 ext4_destroy_inline_data_nolock+0x23a/0x5f0 fs/ext4/inline.c:471 ext4_convert_inline_data_nolock+0x208/0x980 fs/ext4/inline.c:1132 ext4_convert_inline_data+0x484/0x5c0 fs/ext4/inline.c:2012 ext4_setattr+0xef1/0x1df0 fs/ext4/inode.c:6107 notify_change+0xbba/0xea0 fs/attr.c:556 do_truncate+0x1c2/0x250 fs/open.c:68 vfs_truncate+0x4b4/0x540 fs/open.c:118 ksys_truncate+0xf3/0x1c0 fs/open.c:142 __do_sys_truncate fs/open.c:154 [inline] __se_sys_truncate fs/open.c:152 [inline] __x64_sys_truncate+0x5b/0x70 fs/open.c:152 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7d2b79e159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7d2c620fe8 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00007f7d2ba25fa0 RCX: 00007f7d2b79e159 RDX: 0000000000000000 RSI: 0000000000041bdc RDI: 0000200000000040 RBP: 00007f7d2b83506b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7d2ba26038 R14: 00007f7d2ba25fa0 R15: 00007ffd46f17398 The buggy address belongs to the physical page: page: refcount:3 mapcount:0 mapping:ffff88801d025940 index:0x2 pfn:0x13808 memcg:ffff888043ecf080 aops:def_blk_aops ino:700000 dentry name(?):"" flags: 0xfff18000004204(referenced|workingset|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff18000004204 0000000000000000 dead000000000122 ffff88801d025940 raw: 0000000000000002 ffff8880320521c0 00000003ffffffff ffff888043ecf080 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x148c48(GFP_NOFS|__GFP_MOVABLE|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL), pid 5317, tgid 5316 (syz.0.0), ts 93613024192 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871 prep_new_page mm/page_alloc.c:1879 [inline] get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943 __alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436 alloc_pages_mpol+0x21e/0x390 mm/mempolicy.c:2486 alloc_frozen_pages_noprof mm/mempolicy.c:2557 [inline] alloc_pages_noprof+0xb1/0x2b0 mm/mempolicy.c:2577 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2587 filemap_alloc_folio_noprof+0x111/0x460 mm/filemap.c:1019 __filemap_get_folio_mpol+0x402/0x1000 mm/filemap.c:2018 __filemap_get_folio include/linux/pagemap.h:761 [inline] grow_dev_folio fs/buffer.c:858 [inline] grow_buffers fs/buffer.c:924 [inline] __getblk_slow fs/buffer.c:942 [inline] bdev_getblk+0x1f4/0x6e0 fs/buffer.c:1346 __getblk include/linux/buffer_head.h:378 [inline] sb_getblk include/linux/buffer_head.h:384 [inline] __ext4_get_inode_loc+0x56c/0xf40 fs/ext4/inode.c:4921 ext4_get_inode_loc+0x81/0xf0 fs/ext4/inode.c:5049 ext4_xattr_ibody_get+0x113/0x4b0 fs/ext4/xattr.c:659 ext4_xattr_get+0x121/0x690 fs/ext4/xattr.c:720 vfs_getxattr_alloc+0x454/0x5c0 fs/xattr.c:416 ima_read_xattr+0x38/0x60 security/integrity/ima/ima_appraise.c:236 process_measurement+0x110a/0x1c10 security/integrity/ima/ima_main.c:406 page last free pid 77 tgid 77 ts 93550673976 stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] __free_pages_prepare mm/page_alloc.c:1418 [inline] free_unref_folios+0xdc2/0x14e0 mm/page_alloc.c:3022 shrink_folio_list+0x4a2d/0x5250 mm/vmscan.c:1580 evict_folios+0x3055/0x3fb0 mm/vmscan.c:4910 try_to_shrink_lruvec+0xe3b/0x1340 mm/vmscan.c:5076 shrink_one+0x233/0x730 mm/vmscan.c:5117 shrink_many mm/vmscan.c:5180 [inline] lru_gen_shrink_node mm/vmscan.c:5258 [inline] shrink_node+0x35d0/0x3e30 mm/vmscan.c:6247 kswapd_shrink_node mm/vmscan.c:7101 [inline] balance_pgdat mm/vmscan.c:7279 [inline] kswapd+0x185e/0x32c0 mm/vmscan.c:7555 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Memory state around the buggy address: ffff888013808180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888013808200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888013808280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888013808300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888013808380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================