program:
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000280)='mnt\x00', 0x4, &(0x7f0000000000), 0x0, 0x236, &(0x7f0000000300)="$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")
add_key$user(&(0x7f0000000040), &(0x7f0000000080)={'syz', 0x0}, &(0x7f0000000100)="0400"/370, 0x172, 0xfffffffffffffffd)
mkdirat(0xffffffffffffff9c, &(0x7f0000000400)='./lower\x00', 0x1ff)
mount(&(0x7f0000000400)=@filename='./lower\x00', &(0x7f0000000440)='./mnt\x00', &(0x7f0000000480)='ecryptfs\x00', 0x0, &(0x7f0000000500)='ecryptfs_sig=syz ,ecryptfs_fnek_sig=syz ,ecryptfs_cipher=aes,ecryptfs_key_bytes=16\x00')
openat(0xffffffffffffff9c, &(0x7f0000000680)='mnt/encrypted_dir\x00', 0x800, 0x0)
[ 102.139138][ T5291] Bluetooth: hci0: command tx timeout
[ 102.175289][ T5327] loop0: detected capacity change from 0 to 128
[ 102.307033][ T5327] EXT4-fs (loop0): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none.
[ 102.307854][ T5327] ext4 filesystem being mounted at /0/mnt supports timestamps until 2038-01-19 (0x7fffffff)
[ 102.341663][ T5327] ==================================================================
[ 102.341679][ T5327] BUG: KASAN: slab-out-of-bounds in ecryptfs_write_tag_70_packet+0x1241/0x12e0
[ 102.341772][ T5327] Read of size 4 at addr ffff888012471698 by task syz.0.0/5327
[ 102.341784][ T5327]
[ 102.341794][ T5327] CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 102.341808][ T5327] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 102.341816][ T5327] Call Trace:
[ 102.341835][ T5327]
[ 102.341843][ T5327] dump_stack_lvl+0xe8/0x150
[ 102.341865][ T5327] print_address_description+0x55/0x1e0
[ 102.341885][ T5327] ? ecryptfs_write_tag_70_packet+0x1241/0x12e0
[ 102.341900][ T5327] print_report+0x58/0x70
[ 102.341915][ T5327] kasan_report+0x117/0x150
[ 102.341929][ T5327] ? ecryptfs_write_tag_70_packet+0x1241/0x12e0
[ 102.341946][ T5327] ecryptfs_write_tag_70_packet+0x1241/0x12e0
[ 102.341965][ T5327] ecryptfs_encrypt_and_encode_filename+0x576/0x1580
[ 102.342013][ T5327] ? __pfx_ecryptfs_encrypt_and_encode_filename+0x10/0x10
[ 102.342031][ T5327] ? d_alloc_parallel+0x1535/0x16b0
[ 102.342056][ T5327] ecryptfs_lookup+0x20e/0x780
[ 102.342077][ T5327] ? __pfx_ecryptfs_lookup+0x10/0x10
[ 102.342095][ T5327] ? d_lookup+0x1f/0xa0
[ 102.342115][ T5327] ? seqcount_lockdep_reader_access+0xa9/0x100
[ 102.342132][ T5327] lookup_open+0x9e1/0x1a40
[ 102.342167][ T5327] path_openat+0x677/0x1d60
[ 102.342188][ T5327] do_file_open+0x23e/0x4a0
[ 102.342208][ T5327] ? __pfx_do_file_open+0x10/0x10
[ 102.342231][ T5327] ? _raw_spin_unlock+0x28/0x50
[ 102.342280][ T5327] ? alloc_fd+0x651/0x6c0
[ 102.342298][ T5327] do_sys_openat2+0x115/0x200
[ 102.342314][ T5327] ? __se_sys_futex+0x3a8/0x450
[ 102.342333][ T5327] ? __pfx_do_sys_openat2+0x10/0x10
[ 102.342349][ T5327] ? rcu_is_watching+0x16/0xb0
[ 102.342365][ T5327] __x64_sys_openat+0x138/0x170
[ 102.342380][ T5327] do_syscall_64+0x166/0x520
[ 102.342394][ T5327] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 102.342408][ T5327] ? clear_bhb_loop+0x70/0xc0
[ 102.342419][ T5327] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 102.342431][ T5327] RIP: 0033:0x7f56e319e159
[ 102.342443][ T5327] 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
[ 102.342466][ T5327] RSP: 002b:00007f56e411dfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[ 102.342484][ T5327] RAX: ffffffffffffffda RBX: 00007f56e3425fa0 RCX: 00007f56e319e159
[ 102.342496][ T5327] RDX: 0000000000000800 RSI: 0000200000000680 RDI: ffffffffffffff9c
[ 102.342507][ T5327] RBP: 00007f56e323506b R08: 0000000000000000 R09: 0000000000000000
[ 102.342517][ T5327] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 102.342525][ T5327] R13: 00007f56e3426038 R14: 00007f56e3425fa0 R15: 00007ffd68ccca98
[ 102.342541][ T5327]
[ 102.342548][ T5327]
[ 102.342551][ T5327] Allocated by task 5327:
[ 102.342570][ T5327] kasan_save_track+0x3e/0x80
[ 102.342588][ T5327] __kasan_kmalloc+0x93/0xb0
[ 102.342596][ T5327] __kmalloc_noprof+0x36b/0x720
[ 102.342617][ T5327] user_preparse+0x9e/0x160
[ 102.342633][ T5327] __key_create_or_update+0x3a9/0xa80
[ 102.342646][ T5327] key_create_or_update+0x42/0x60
[ 102.342657][ T5327] __se_sys_add_key+0x349/0x420
[ 102.342674][ T5327] do_syscall_64+0x166/0x520
[ 102.342689][ T5327] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 102.342700][ T5327]
[ 102.342704][ T5327] The buggy address belongs to the object at ffff888012471400
[ 102.342704][ T5327] which belongs to the cache kmalloc-512 of size 512
[ 102.342717][ T5327] The buggy address is located 270 bytes to the right of
[ 102.342717][ T5327] allocated 394-byte region [ffff888012471400, ffff88801247158a)
[ 102.342732][ T5327]
[ 102.342735][ T5327] The buggy address belongs to the physical page:
[ 102.342742][ T5327] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12470
[ 102.342753][ T5327] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 102.342762][ T5327] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 102.342774][ T5327] page_type: f5(slab)
[ 102.342784][ T5327] raw: 00fff00000000040 ffff88801b041c80 dead000000000100 dead000000000122
[ 102.342795][ T5327] raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
[ 102.342807][ T5327] head: 00fff00000000040 ffff88801b041c80 dead000000000100 dead000000000122
[ 102.342816][ T5327] head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
[ 102.342828][ T5327] head: 00fff00000000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff
[ 102.342838][ T5327] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002
[ 102.342845][ T5327] page dumped because: kasan: bad access detected
[ 102.342851][ T5327] page_owner tracks the page as allocated
[ 102.342854][ T5327] page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 2, tgid 2 (kthreadd), ts 98102540251
[ 102.342872][ T5327] post_alloc_hook+0x1f9/0x250
[ 102.342886][ T5327] get_page_from_freelist+0x2209/0x2280
[ 102.342902][ T5327] __alloc_frozen_pages_noprof+0x217/0x5a0
[ 102.342919][ T5327] allocate_slab+0x7d/0x620
[ 102.342929][ T5327] refill_objects+0x2d5/0x350
[ 102.342940][ T5327] __pcs_replace_empty_main+0x2c8/0x6c0
[ 102.342952][ T5327] __kmalloc_cache_noprof+0x39b/0x600
[ 102.342968][ T5327] set_kthread_struct+0xbb/0x340
[ 102.342982][ T5327] copy_process+0x17c7/0x43e0
[ 102.342996][ T5327] kernel_clone+0x2d7/0x940
[ 102.343011][ T5327] kernel_thread+0x13f/0x1b0
[ 102.343024][ T5327] kthreadd+0x4ec/0x6e0
[ 102.343037][ T5327] ret_from_fork+0x514/0xb70
[ 102.343047][ T5327] ret_from_fork_asm+0x1a/0x30
[ 102.343065][ T5327] page last free pid 15 tgid 15 ts 47054382409 stack trace:
[ 102.343072][ T5327] __free_frozen_pages+0xc93/0xd90
[ 102.343086][ T5327] tlb_remove_table_rcu+0x85/0x100
[ 102.343101][ T5327] rcu_core+0x926/0x1260
[ 102.343113][ T5327] handle_softirqs+0x226/0x860
[ 102.343128][ T5327] run_ksoftirqd+0x36/0x60
[ 102.343152][ T5327] smpboot_thread_fn+0x565/0xa70
[ 102.343171][ T5327] kthread+0x38b/0x480
[ 102.343181][ T5327] ret_from_fork+0x514/0xb70
[ 102.343188][ T5327] ret_from_fork_asm+0x1a/0x30
[ 102.343206][ T5327]
[ 102.343210][ T5327] Memory state around the buggy address:
[ 102.343218][ T5327] ffff888012471580: 00 02 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 102.343227][ T5327] ffff888012471600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 102.343234][ T5327] >ffff888012471680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 102.343240][ T5327] ^
[ 102.343246][ T5327] ffff888012471700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 102.343254][ T5327] ffff888012471780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 102.343260][ T5327] ==================================================================
[ 102.343270][ T5327] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 102.634012][ T5327] CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 102.637852][ T5327] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 102.642186][ T5327] Call Trace:
[ 102.643656][ T5327]
[ 102.644954][ T5327] vpanic+0x56d/0xa60
[ 102.646753][ T5327] ? __pfx_vpanic+0x10/0x10
[ 102.648723][ T5327] panic+0xc5/0xd0
[ 102.650380][ T5327] ? __pfx_panic+0x10/0x10
[ 102.652312][ T5327] ? ecryptfs_write_tag_70_packet+0x1241/0x12e0
[ 102.655038][ T5327] ? rcu_is_watching+0x16/0xb0
[ 102.657161][ T5327] ? ecryptfs_write_tag_70_packet+0x1241/0x12e0
[ 102.659868][ T5327] check_panic_on_warn+0x89/0xb0
[ 102.661993][ T5327] ? ecryptfs_write_tag_70_packet+0x1241/0x12e0
[ 102.664743][ T5327] end_report+0x73/0x170
[ 102.666684][ T5327] ? ecryptfs_write_tag_70_packet+0x1241/0x12e0
[ 102.669415][ T5327] kasan_report+0x128/0x150
[ 102.671486][ T5327] ? ecryptfs_write_tag_70_packet+0x1241/0x12e0
[ 102.674294][ T5327] ecryptfs_write_tag_70_packet+0x1241/0x12e0
[ 102.676938][ T5327] ecryptfs_encrypt_and_encode_filename+0x576/0x1580
[ 102.679579][ T5327] ? __pfx_ecryptfs_encrypt_and_encode_filename+0x10/0x10
[ 102.682238][ T5327] ? d_alloc_parallel+0x1535/0x16b0
[ 102.684361][ T5327] ecryptfs_lookup+0x20e/0x780
[ 102.686294][ T5327] ? __pfx_ecryptfs_lookup+0x10/0x10
[ 102.688308][ T5327] ? d_lookup+0x1f/0xa0
[ 102.689883][ T5327] ? seqcount_lockdep_reader_access+0xa9/0x100
[ 102.692397][ T5327] lookup_open+0x9e1/0x1a40
[ 102.694177][ T5327] path_openat+0x677/0x1d60
[ 102.695924][ T5327] do_file_open+0x23e/0x4a0
[ 102.697699][ T5327] ? __pfx_do_file_open+0x10/0x10
[ 102.699830][ T5327] ? _raw_spin_unlock+0x28/0x50
[ 102.702535][ T5327] ? alloc_fd+0x651/0x6c0
[ 102.704388][ T5327] do_sys_openat2+0x115/0x200
[ 102.706361][ T5327] ? __se_sys_futex+0x3a8/0x450
[ 102.708432][ T5327] ? __pfx_do_sys_openat2+0x10/0x10
[ 102.710226][ T5327] ? rcu_is_watching+0x16/0xb0
[ 102.711832][ T5327] __x64_sys_openat+0x138/0x170
[ 102.713520][ T5327] do_syscall_64+0x166/0x520
[ 102.715162][ T5327] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 102.717401][ T5327] ? clear_bhb_loop+0x70/0xc0
[ 102.719055][ T5327] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 102.721458][ T5327] RIP: 0033:0x7f56e319e159
[ 102.723419][ T5327] 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
[ 102.731660][ T5327] RSP: 002b:00007f56e411dfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[ 102.735340][ T5327] RAX: ffffffffffffffda RBX: 00007f56e3425fa0 RCX: 00007f56e319e159
[ 102.738719][ T5327] RDX: 0000000000000800 RSI: 0000200000000680 RDI: ffffffffffffff9c
[ 102.742149][ T5327] RBP: 00007f56e323506b R08: 0000000000000000 R09: 0000000000000000
[ 102.745549][ T5327] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 102.748904][ T5327] R13: 00007f56e3426038 R14: 00007f56e3425fa0 R15: 00007ffd68ccca98
[ 102.752230][ T5327]
[ 102.753782][ T5327] Kernel Offset: disabled
[ 102.755402][ T5327] Rebooting in 86400 seconds..