loop0: detected capacity change from 0 to 512 EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support! EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=a00ec019, mo2=0002] System zones: 1-12 EXT4-fs warning (device loop0): ext4_expand_extra_isize_ea:2863: Unable to expand inode 15. Delete some EAs or run e2fsck. EXT4-fs (loop0): 1 truncate cleaned up EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x8ce/0x1f60 fs/ext4/xattr.c:1781 Read of size 18446744073709551572 at addr ffff888038851050 by task syz.0.0/5346 CPU: 0 UID: 0 PID: 5346 Comm: syz.0.0 Not tainted 6.12.0-rc7-syzkaller-00187-gf868cd251776 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94 ext4_xattr_set_entry+0x8ce/0x1f60 fs/ext4/xattr.c:1781 ext4_xattr_block_set+0xa39/0x3980 fs/ext4/xattr.c:2028 ext4_xattr_move_to_block fs/ext4/xattr.c:2670 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2745 [inline] ext4_expand_extra_isize_ea+0x12d7/0x1cf0 fs/ext4/xattr.c:2837 __ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5831 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5874 [inline] __ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5952 __ext4_unlink+0x6c2/0xb50 fs/ext4/namei.c:3291 ext4_unlink+0x1bf/0x5a0 fs/ext4/namei.c:3320 vfs_unlink+0x365/0x650 fs/namei.c:4469 do_unlinkat+0x4ae/0x830 fs/namei.c:4533 __do_sys_unlink fs/namei.c:4581 [inline] __se_sys_unlink fs/namei.c:4579 [inline] __x64_sys_unlink+0x47/0x50 fs/namei.c:4579 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: 0033:0x7fd2b837e719 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:00007fd2b9112038 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007fd2b8535f80 RCX: 00007fd2b837e719 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007fd2b83f175e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd2b8535f80 R15: 00007ffd9d0a9ee8 Allocated by task 5346: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:257 [inline] __do_kmalloc_node mm/slub.c:4264 [inline] __kmalloc_node_track_caller_noprof+0x225/0x440 mm/slub.c:4283 kmemdup_noprof+0x2a/0x60 mm/util.c:133 ext4_xattr_block_set+0x88b/0x3980 fs/ext4/xattr.c:1976 ext4_xattr_move_to_block fs/ext4/xattr.c:2670 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2745 [inline] ext4_expand_extra_isize_ea+0x12d7/0x1cf0 fs/ext4/xattr.c:2837 __ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5831 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5874 [inline] __ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5952 __ext4_unlink+0x6c2/0xb50 fs/ext4/namei.c:3291 ext4_unlink+0x1bf/0x5a0 fs/ext4/namei.c:3320 vfs_unlink+0x365/0x650 fs/namei.c:4469 do_unlinkat+0x4ae/0x830 fs/namei.c:4533 __do_sys_unlink fs/namei.c:4581 [inline] __se_sys_unlink fs/namei.c:4579 [inline] __x64_sys_unlink+0x47/0x50 fs/namei.c:4579 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 The buggy address belongs to the object at ffff888038851000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 80 bytes inside of 1024-byte region [ffff888038851000, ffff888038851400) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x38850 head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000040 ffff88801ac41dc0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080080008 00000001f5000000 0000000000000000 head: 04fff00000000040 ffff88801ac41dc0 dead000000000122 0000000000000000 head: 0000000000000000 0000000080080008 00000001f5000000 0000000000000000 head: 04fff00000000002 ffffea0000e21401 ffffffffffffffff 0000000000000000 head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 12, tgid 12 (kworker/u4:1), ts 185653299529, free_ts 185317908371 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 prep_new_page mm/page_alloc.c:1564 [inline] get_page_from_freelist+0x3649/0x3790 mm/page_alloc.c:3474 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4750 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 alloc_slab_page+0x6a/0x140 mm/slub.c:2412 allocate_slab+0x5a/0x2f0 mm/slub.c:2578 new_slab mm/slub.c:2631 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818 __slab_alloc+0x58/0xa0 mm/slub.c:3908 __slab_alloc_node mm/slub.c:3961 [inline] slab_alloc_node mm/slub.c:4122 [inline] __do_kmalloc_node mm/slub.c:4263 [inline] __kmalloc_noprof+0x25a/0x400 mm/slub.c:4276 kmalloc_noprof include/linux/slab.h:882 [inline] kzalloc_noprof include/linux/slab.h:1014 [inline] ieee802_11_parse_elems_full+0xdb/0x2880 net/mac80211/parse.c:958 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2385 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2392 [inline] ieee80211_inform_bss+0x15f/0x1080 net/mac80211/scan.c:79 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline] cfg80211_inform_single_bss_data+0xec1/0x2090 net/wireless/scan.c:2333 cfg80211_inform_bss_data+0x3ce/0x5e80 net/wireless/scan.c:3188 cfg80211_inform_bss_frame_data+0x3b8/0x720 net/wireless/scan.c:3283 ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226 ieee80211_rx_bss_info net/mac80211/ibss.c:1100 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline] ieee80211_ibss_rx_queued_mgmt+0x1962/0x2d70 net/mac80211/ibss.c:1606 page last free pid 4727 tgid 4727 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_page+0xdf9/0x1140 mm/page_alloc.c:2657 __slab_free+0x31b/0x3d0 mm/slub.c:4490 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:247 [inline] slab_post_alloc_hook mm/slub.c:4085 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4186 __alloc_skb+0x1c3/0x440 net/core/skbuff.c:668 alloc_skb include/linux/skbuff.h:1322 [inline] alloc_skb_with_frags+0xc3/0x820 net/core/skbuff.c:6612 sock_alloc_send_pskb+0x91a/0xa60 net/core/sock.c:2889 unix_dgram_sendmsg+0x6d3/0x1f80 net/unix/af_unix.c:2027 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 __sys_sendto+0x39b/0x4f0 net/socket.c:2214 __do_sys_sendto net/socket.c:2226 [inline] __se_sys_sendto net/socket.c:2222 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2222 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 Memory state around the buggy address: ffff888038850f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888038850f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888038851000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888038851080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888038851100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================