program:
syz_mount_image$ext4(&(0x7f00000000c0)='ext4\x00', &(0x7f0000000280)='mnt\x00', 0x808018, &(0x7f0000000200)={[{@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0xc500}}, {@dioread_lock}]}, 0x0, 0x236, &(0x7f0000000300)="$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")
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./lower\x00', 0x1ff)
add_key$user(&(0x7f0000000100), &(0x7f0000000140)={'syz', 0x0}, &(0x7f0000000700)="040000", 0x3, 0xfffffffffffffffd)
mount(&(0x7f0000000a40)=@filename='./lower\x00', &(0x7f0000000a80)='./mnt\x00', &(0x7f0000000ac0)='ecryptfs\x00', 0x0, &(0x7f0000000b00)='ecryptfs_sig=syz ,ecryptfs_cipher=aes,ecryptfs_key_bytes=16\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000640)='mnt/encrypted_dir\x00', 0x0)
[ 101.567123][ T4650] Bluetooth: hci0: command tx timeout
[ 101.584287][ T5327] loop0: detected capacity change from 0 to 128
[ 101.672821][ T5327] EXT4-fs (loop0): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none.
[ 101.676155][ T5327] ext4 filesystem being mounted at /0/mnt supports timestamps until 2038-01-19 (0x7fffffff)
[ 101.709190][ T5327] ==================================================================
[ 101.709244][ T5327] BUG: KASAN: slab-out-of-bounds in ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 101.709464][ T5327] Read of size 2 at addr ffff888013f1691b by task syz.0.0/5327
[ 101.709476][ T5327]
[ 101.709484][ T5327] CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 101.709497][ T5327] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 101.709503][ T5327] Call Trace:
[ 101.709510][ T5327]
[ 101.709516][ T5327] dump_stack_lvl+0xe8/0x150
[ 101.709575][ T5327] print_address_description+0x55/0x1e0
[ 101.709594][ T5327] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 101.709612][ T5327] print_report+0x58/0x70
[ 101.709633][ T5327] kasan_report+0x117/0x150
[ 101.709661][ T5327] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 101.709681][ T5327] ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 101.709700][ T5327] ecryptfs_keyring_auth_tok_for_sig+0xec/0x250
[ 101.709718][ T5327] ecryptfs_get_tree+0x563/0x1370
[ 101.709733][ T5327] ? __pfx_ecryptfs_get_tree+0x10/0x10
[ 101.709749][ T5327] vfs_get_tree+0x92/0x2a0
[ 101.709762][ T5327] do_new_mount+0x325/0xb00
[ 101.709779][ T5327] ? __pfx_do_new_mount+0x10/0x10
[ 101.709794][ T5327] ? ns_capable+0x89/0xe0
[ 101.709824][ T5327] ? path_mount+0x647/0x1050
[ 101.709841][ T5327] ? user_path_at+0xd4/0x160
[ 101.709861][ T5327] __se_sys_mount+0x31d/0x420
[ 101.709877][ T5327] ? __pfx___se_sys_mount+0x10/0x10
[ 101.709893][ T5327] ? __x64_sys_mount+0x20/0xc0
[ 101.709908][ T5327] do_syscall_64+0x166/0x520
[ 101.710019][ T5327] ? trace_irq_disable+0x3b/0x140
[ 101.710048][ T5327] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 101.710063][ T5327] ? clear_bhb_loop+0x70/0xc0
[ 101.710077][ T5327] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 101.710088][ T5327] RIP: 0033:0x7f407639e1d9
[ 101.710099][ 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
[ 101.710109][ T5327] RSP: 002b:00007f40772f7fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 101.710124][ T5327] RAX: ffffffffffffffda RBX: 00007f4076625fa0 RCX: 00007f407639e1d9
[ 101.710133][ T5327] RDX: 0000200000000ac0 RSI: 0000200000000a80 RDI: 0000200000000a40
[ 101.710141][ T5327] RBP: 00007f4076435888 R08: 0000200000000b00 R09: 0000000000000000
[ 101.710149][ T5327] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 101.710157][ T5327] R13: 00007f4076626038 R14: 00007f4076625fa0 R15: 00007ffc810d5228
[ 101.710171][ T5327]
[ 101.710175][ T5327]
[ 101.710178][ T5327] Allocated by task 5327:
[ 101.710185][ T5327] kasan_save_track+0x3e/0x80
[ 101.710197][ T5327] __kasan_kmalloc+0x93/0xb0
[ 101.710208][ T5327] __kmalloc_noprof+0x36b/0x720
[ 101.710217][ T5327] user_preparse+0x9e/0x160
[ 101.710282][ T5327] __key_create_or_update+0x354/0xa70
[ 101.710296][ T5327] key_create_or_update+0x42/0x60
[ 101.710310][ T5327] __se_sys_add_key+0x349/0x420
[ 101.710319][ T5327] do_syscall_64+0x166/0x520
[ 101.710330][ T5327] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 101.710340][ T5327]
[ 101.710343][ T5327] The buggy address belongs to the object at ffff888013f16900
[ 101.710343][ T5327] which belongs to the cache kmalloc-32 of size 32
[ 101.710352][ T5327] The buggy address is located 0 bytes to the right of
[ 101.710352][ T5327] allocated 27-byte region [ffff888013f16900, ffff888013f1691b)
[ 101.710364][ T5327]
[ 101.710366][ T5327] The buggy address belongs to the physical page:
[ 101.710373][ T5327] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888013f16940 pfn:0x13f16
[ 101.710384][ T5327] flags: 0xfff00000000200(workingset|node=0|zone=1|lastcpupid=0x7ff)
[ 101.710396][ T5327] page_type: f5(slab)
[ 101.710408][ T5327] raw: 00fff00000000200 ffff88801c041780 ffff88801c0404c8 ffffea00004fc4d0
[ 101.710419][ T5327] raw: ffff888013f16940 000000000040003d 00000000f5000000 0000000000000000
[ 101.710425][ T5327] page dumped because: kasan: bad access detected
[ 101.710430][ T5327] page_owner tracks the page as allocated
[ 101.710434][ T5327] page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4669, tgid 4669 (mount), ts 30955334196
[ 101.710450][ T5327] post_alloc_hook+0x1f9/0x250
[ 101.710466][ T5327] get_page_from_freelist+0x2209/0x2280
[ 101.710477][ T5327] __alloc_frozen_pages_noprof+0x217/0x5a0
[ 101.710488][ T5327] allocate_slab+0x7d/0x620
[ 101.710501][ T5327] refill_objects+0x2d5/0x350
[ 101.710514][ T5327] __pcs_replace_empty_main+0x2c8/0x6c0
[ 101.710526][ T5327] __kmalloc_cache_noprof+0x39b/0x600
[ 101.710536][ T5327] kmem_cache_free+0x156/0x650
[ 101.710546][ T5327] vms_complete_munmap_vmas+0x897/0xbe0
[ 101.710558][ T5327] mmap_region+0x1183/0x25b0
[ 101.710569][ T5327] do_mmap+0xe0a/0x1300
[ 101.710582][ T5327] vm_mmap_pgoff+0x272/0x4e0
[ 101.710595][ T5327] ksys_mmap_pgoff+0x4dc/0x760
[ 101.710606][ T5327] do_syscall_64+0x166/0x520
[ 101.710617][ T5327] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 101.710635][ T5327] page last free pid 15 tgid 15 ts 30951935352 stack trace:
[ 101.710643][ T5327] __free_frozen_pages+0xc93/0xd90
[ 101.710659][ T5327] tlb_remove_table_rcu+0x85/0x100
[ 101.710670][ T5327] rcu_core+0x926/0x1260
[ 101.710682][ T5327] handle_softirqs+0x226/0x860
[ 101.710696][ T5327] run_ksoftirqd+0x36/0x60
[ 101.710711][ T5327] smpboot_thread_fn+0x565/0xa70
[ 101.710727][ T5327] kthread+0x38b/0x480
[ 101.710736][ T5327] ret_from_fork+0x514/0xb70
[ 101.710747][ T5327] ret_from_fork_asm+0x1a/0x30
[ 101.710757][ T5327]
[ 101.710760][ T5327] Memory state around the buggy address:
[ 101.710766][ T5327] ffff888013f16800: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc
[ 101.710773][ T5327] ffff888013f16880: fa fb fb fb fc fc fc fc 00 00 00 02 fc fc fc fc
[ 101.710781][ T5327] >ffff888013f16900: 00 00 00 03 fc fc fc fc fa fb fb fb fc fc fc fc
[ 101.710786][ T5327] ^
[ 101.710792][ T5327] ffff888013f16980: 00 00 00 00 fc fc fc fc 00 00 00 00 fc fc fc fc
[ 101.710800][ T5327] ffff888013f16a00: 00 00 00 00 fc fc fc fc 00 00 00 fc fc fc fc fc
[ 101.710805][ T5327] ==================================================================
[ 102.036172][ T5327] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 102.039238][ T5327] CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 102.042841][ T5327] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 102.047061][ T5327] Call Trace:
[ 102.048511][ T5327]
[ 102.049753][ T5327] vpanic+0x56d/0xa60
[ 102.051444][ T5327] ? __pfx_vpanic+0x10/0x10
[ 102.053398][ T5327] ? __pfx___schedule+0x10/0x10
[ 102.055513][ T5327] panic+0xc5/0xd0
[ 102.057189][ T5327] ? __pfx_panic+0x10/0x10
[ 102.059136][ T5327] ? preempt_schedule_thunk+0x16/0x40
[ 102.061406][ T5327] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 102.064147][ T5327] check_panic_on_warn+0x89/0xb0
[ 102.066353][ T5327] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 102.069200][ T5327] end_report+0x73/0x170
[ 102.071163][ T5327] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 102.074080][ T5327] kasan_report+0x128/0x150
[ 102.076079][ T5327] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 102.078873][ T5327] ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 102.081670][ T5327] ecryptfs_keyring_auth_tok_for_sig+0xec/0x250
[ 102.084463][ T5327] ecryptfs_get_tree+0x563/0x1370
[ 102.086760][ T5327] ? __pfx_ecryptfs_get_tree+0x10/0x10
[ 102.089185][ T5327] vfs_get_tree+0x92/0x2a0
[ 102.091135][ T5327] do_new_mount+0x325/0xb00
[ 102.093096][ T5327] ? __pfx_do_new_mount+0x10/0x10
[ 102.095285][ T5327] ? ns_capable+0x89/0xe0
[ 102.097169][ T5327] ? path_mount+0x647/0x1050
[ 102.099371][ T5327] ? user_path_at+0xd4/0x160
[ 102.101813][ T5327] __se_sys_mount+0x31d/0x420
[ 102.103976][ T5327] ? __pfx___se_sys_mount+0x10/0x10
[ 102.106344][ T5327] ? __x64_sys_mount+0x20/0xc0
[ 102.108449][ T5327] do_syscall_64+0x166/0x520
[ 102.110436][ T5327] ? trace_irq_disable+0x3b/0x140
[ 102.112592][ T5327] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 102.115311][ T5327] ? clear_bhb_loop+0x70/0xc0
[ 102.117462][ T5327] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 102.119993][ T5327] RIP: 0033:0x7f407639e1d9
[ 102.121795][ 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
[ 102.130018][ T5327] RSP: 002b:00007f40772f7fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 102.133590][ T5327] RAX: ffffffffffffffda RBX: 00007f4076625fa0 RCX: 00007f407639e1d9
[ 102.136801][ T5327] RDX: 0000200000000ac0 RSI: 0000200000000a80 RDI: 0000200000000a40
[ 102.140330][ T5327] RBP: 00007f4076435888 R08: 0000200000000b00 R09: 0000000000000000
[ 102.143801][ T5327] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 102.147487][ T5327] R13: 00007f4076626038 R14: 00007f4076625fa0 R15: 00007ffc810d5228
[ 102.151085][ T5327]
[ 102.152888][ T5327] Kernel Offset: disabled
[ 102.154818][ T5327] Rebooting in 86400 seconds..