EXT4-fs (loop9): encrypted files will use data=ordered instead of data journaling mode EXT4-fs (loop9): 1 truncate cleaned up EXT4-fs (loop9): mounted filesystem without journal. Quota mode: writeback. ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x8ca/0x1f30 fs/ext4/xattr.c:1732 Read of size 18446744073709551572 at addr ffff88807e5ab850 by task syz.9.967/8507 CPU: 0 PID: 8507 Comm: syz.9.967 Not tainted 6.1.119-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189 memmove+0x25/0x60 mm/kasan/shadow.c:54 ext4_xattr_set_entry+0x8ca/0x1f30 fs/ext4/xattr.c:1732 ext4_xattr_block_set+0xa58/0x3920 fs/ext4/xattr.c:1979 ext4_xattr_move_to_block fs/ext4/xattr.c:2616 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2691 [inline] ext4_expand_extra_isize_ea+0x10d5/0x1bb0 fs/ext4/xattr.c:2783 __ext4_expand_extra_isize+0x2f7/0x3d0 fs/ext4/inode.c:5936 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5979 [inline] __ext4_mark_inode_dirty+0x54f/0x920 fs/ext4/inode.c:6057 __ext4_unlink+0x6ed/0xba0 fs/ext4/namei.c:3341 ext4_unlink+0x1d5/0x670 fs/ext4/namei.c:3370 vfs_unlink+0x359/0x5f0 fs/namei.c:4322 do_unlinkat+0x4a5/0x820 fs/namei.c:4390 __do_sys_unlink fs/namei.c:4438 [inline] __se_sys_unlink fs/namei.c:4436 [inline] __x64_sys_unlink+0x45/0x50 fs/namei.c:4436 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f3c15985d19 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:00007f3c16798038 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007f3c15b75fa0 RCX: 00007f3c15985d19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00007f3c15a01a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f3c15b75fa0 R15: 00007fff5ad2f9e8 Allocated by task 8507: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:936 [inline] __kmalloc_node_track_caller+0xb1/0x220 mm/slab_common.c:956 kmemdup+0x26/0x60 mm/util.c:129 ext4_xattr_block_set+0x884/0x3920 fs/ext4/xattr.c:1927 ext4_xattr_move_to_block fs/ext4/xattr.c:2616 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2691 [inline] ext4_expand_extra_isize_ea+0x10d5/0x1bb0 fs/ext4/xattr.c:2783 __ext4_expand_extra_isize+0x2f7/0x3d0 fs/ext4/inode.c:5936 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5979 [inline] __ext4_mark_inode_dirty+0x54f/0x920 fs/ext4/inode.c:6057 __ext4_unlink+0x6ed/0xba0 fs/ext4/namei.c:3341 ext4_unlink+0x1d5/0x670 fs/ext4/namei.c:3370 vfs_unlink+0x359/0x5f0 fs/namei.c:4322 do_unlinkat+0x4a5/0x820 fs/namei.c:4390 __do_sys_unlink fs/namei.c:4438 [inline] __se_sys_unlink fs/namei.c:4436 [inline] __x64_sys_unlink+0x45/0x50 fs/namei.c:4436 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff88807e5ab800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 80 bytes inside of 1024-byte region [ffff88807e5ab800, ffff88807e5abc00) The buggy address belongs to the physical page: page:ffffea0001f96a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7e5a8 head:ffffea0001f96a00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea00015cb600 dead000000000002 ffff888017c41dc0 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4255, tgid 4255 (syz-executor), ts 79511448935, free_ts 79466696067 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2517 prep_new_page mm/page_alloc.c:2524 [inline] get_page_from_freelist+0x3731/0x38d0 mm/page_alloc.c:4313 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5590 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x84/0x2d0 mm/slub.c:1992 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:935 [inline] __kmalloc_node_track_caller+0xa0/0x220 mm/slab_common.c:956 kmalloc_reserve net/core/skbuff.c:446 [inline] __alloc_skb+0x135/0x670 net/core/skbuff.c:515 alloc_skb include/linux/skbuff.h:1271 [inline] nlmsg_new include/net/netlink.h:991 [inline] inet6_rt_notify+0xdc/0x280 net/ipv6/route.c:6174 fib6_add_rt2node net/ipv6/ip6_fib.c:1256 [inline] fib6_add+0x1db2/0x3c80 net/ipv6/ip6_fib.c:1485 __ip6_ins_rt net/ipv6/route.c:1308 [inline] ip6_ins_rt+0x102/0x170 net/ipv6/route.c:1318 __ipv6_ifa_notify+0x5bc/0x11d0 net/ipv6/addrconf.c:6187 ipv6_ifa_notify net/ipv6/addrconf.c:6226 [inline] add_addr+0x2ca/0x480 net/ipv6/addrconf.c:3135 add_v4_addrs+0x8cf/0x1180 net/ipv6/addrconf.c:3194 addrconf_gre_config net/ipv6/addrconf.c:3470 [inline] addrconf_init_auto_addrs+0x1ff/0xe60 net/ipv6/addrconf.c:3488 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1444 [inline] free_pcp_prepare mm/page_alloc.c:1494 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3369 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3464 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] __kmem_cache_alloc_node+0x137/0x260 mm/slub.c:3437 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1026 kmalloc include/linux/slab.h:557 [inline] kzalloc include/linux/slab.h:693 [inline] nsim_fib6_rt_create drivers/net/netdevsim/fib.c:547 [inline] nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:752 [inline] nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline] nsim_fib_event drivers/net/netdevsim/fib.c:889 [inline] nsim_fib_event_work+0x19be/0x4120 drivers/net/netdevsim/fib.c:1494 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 process_scheduled_works kernel/workqueue.c:2355 [inline] worker_thread+0xd04/0x1200 kernel/workqueue.c:2441 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Memory state around the buggy address: ffff88807e5ab700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807e5ab780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88807e5ab800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88807e5ab880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88807e5ab900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================