program:
add_key$user(&(0x7f0000000040), &(0x7f0000000080)={'syz', 0x0}, &(0x7f0000000100)="040000", 0x3, 0xfffffffffffffffd)
mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./mnt\x00', 0x106)
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')
[ 123.115896][ T5288] Bluetooth: hci0: command tx timeout
[ 123.190321][ T5323] ==================================================================
[ 123.190335][ T5323] BUG: KASAN: slab-out-of-bounds in ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 123.190435][ T5323] Read of size 2 at addr ffff888012e53f9b by task syz.0.0/5323
[ 123.190445][ T5323]
[ 123.190453][ T5323] CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 123.190467][ T5323] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 123.190475][ T5323] Call Trace:
[ 123.190481][ T5323]
[ 123.190486][ T5323] dump_stack_lvl+0xe8/0x150
[ 123.190505][ T5323] print_address_description+0x55/0x1e0
[ 123.190521][ T5323] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 123.190534][ T5323] print_report+0x58/0x70
[ 123.190548][ T5323] kasan_report+0x117/0x150
[ 123.190560][ T5323] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 123.190576][ T5323] ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 123.190591][ T5323] ecryptfs_keyring_auth_tok_for_sig+0xec/0x250
[ 123.190604][ T5323] ecryptfs_get_tree+0x563/0x1370
[ 123.190623][ T5323] ? __pfx_ecryptfs_get_tree+0x10/0x10
[ 123.190642][ T5323] vfs_get_tree+0x92/0x2a0
[ 123.190658][ T5323] do_new_mount+0x319/0xdc0
[ 123.190673][ T5323] ? __pfx_do_new_mount+0x10/0x10
[ 123.190685][ T5323] ? ns_capable+0x89/0xe0
[ 123.190700][ T5323] ? path_mount+0x647/0x1050
[ 123.190713][ T5323] ? user_path_at+0xd4/0x160
[ 123.190728][ T5323] __se_sys_mount+0x31d/0x420
[ 123.190742][ T5323] ? __pfx___se_sys_mount+0x10/0x10
[ 123.190757][ T5323] ? __x64_sys_mount+0x20/0xc0
[ 123.190769][ T5323] do_syscall_64+0x166/0x520
[ 123.190815][ T5323] ? trace_irq_disable+0x3b/0x140
[ 123.190828][ T5323] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 123.190840][ T5323] ? clear_bhb_loop+0x70/0xc0
[ 123.190854][ T5323] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 123.190865][ T5323] RIP: 0033:0x7fdb5779e159
[ 123.190877][ T5323] 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
[ 123.190887][ T5323] RSP: 002b:00007fdb586a6fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 123.190930][ T5323] RAX: ffffffffffffffda RBX: 00007fdb57a25fa0 RCX: 00007fdb5779e159
[ 123.190939][ T5323] RDX: 0000200000000480 RSI: 0000200000000440 RDI: 0000200000000400
[ 123.190947][ T5323] RBP: 00007fdb5783503b R08: 0000200000000500 R09: 0000000000000000
[ 123.190955][ T5323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 123.190962][ T5323] R13: 00007fdb57a26038 R14: 00007fdb57a25fa0 R15: 00007fff69e7f638
[ 123.190975][ T5323]
[ 123.190980][ T5323]
[ 123.190983][ T5323] Allocated by task 5323:
[ 123.190990][ T5323] kasan_save_track+0x3e/0x80
[ 123.191005][ T5323] __kasan_kmalloc+0x93/0xb0
[ 123.191014][ T5323] __kmalloc_noprof+0x36b/0x720
[ 123.191028][ T5323] user_preparse+0x9e/0x160
[ 123.191039][ T5323] __key_create_or_update+0x3a9/0xa80
[ 123.191051][ T5323] key_create_or_update+0x42/0x60
[ 123.191061][ T5323] __se_sys_add_key+0x349/0x420
[ 123.191074][ T5323] do_syscall_64+0x166/0x520
[ 123.191085][ T5323] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 123.191096][ T5323]
[ 123.191099][ T5323] The buggy address belongs to the object at ffff888012e53f80
[ 123.191099][ T5323] which belongs to the cache kmalloc-32 of size 32
[ 123.191109][ T5323] The buggy address is located 0 bytes to the right of
[ 123.191109][ T5323] allocated 27-byte region [ffff888012e53f80, ffff888012e53f9b)
[ 123.191120][ T5323]
[ 123.191123][ T5323] The buggy address belongs to the physical page:
[ 123.191129][ T5323] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12e53
[ 123.191140][ T5323] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
[ 123.191150][ T5323] page_type: f5(slab)
[ 123.191161][ T5323] raw: 00fff00000000000 ffff88801b041780 dead000000000100 dead000000000122
[ 123.191170][ T5323] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000
[ 123.191175][ T5323] page dumped because: kasan: bad access detected
[ 123.191222][ T5323] page_owner tracks the page as allocated
[ 123.191228][ T5323] page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5179, tgid 5179 (rm), ts 102678995101
[ 123.191247][ T5323] post_alloc_hook+0x1f9/0x250
[ 123.191262][ T5323] get_page_from_freelist+0x2209/0x2280
[ 123.191278][ T5323] __alloc_frozen_pages_noprof+0x217/0x5a0
[ 123.191294][ T5323] allocate_slab+0x7d/0x620
[ 123.191304][ T5323] refill_objects+0x2d5/0x350
[ 123.191315][ T5323] __pcs_replace_empty_main+0x2c8/0x6c0
[ 123.191326][ T5323] __kmalloc_cache_noprof+0x39b/0x600
[ 123.191339][ T5323] kmem_cache_free+0x156/0x650
[ 123.191353][ T5323] tear_down_vmas+0x31f/0x530
[ 123.191366][ T5323] exit_mmap+0x4ca/0x9f0
[ 123.191377][ T5323] __mmput+0x118/0x420
[ 123.191389][ T5323] setup_new_exec+0x30d/0x360
[ 123.191402][ T5323] load_elf_binary+0xbc0/0x28d0
[ 123.191412][ T5323] bprm_execve+0x930/0x1590
[ 123.191425][ T5323] do_execveat_common+0x4f4/0x670
[ 123.191438][ T5323] __x64_sys_execve+0x97/0xc0
[ 123.191451][ T5323] page last free pid 5179 tgid 5179 ts 102678497438 stack trace:
[ 123.191459][ T5323] __free_frozen_pages+0xc93/0xd90
[ 123.191471][ T5323] tlb_finish_mmu+0x13e/0x220
[ 123.191485][ T5323] exit_mmap+0x4b2/0x9f0
[ 123.191496][ T5323] __mmput+0x118/0x420
[ 123.191508][ T5323] setup_new_exec+0x30d/0x360
[ 123.191520][ T5323] load_elf_binary+0xbc0/0x28d0
[ 123.191530][ T5323] bprm_execve+0x930/0x1590
[ 123.191543][ T5323] do_execveat_common+0x4f4/0x670
[ 123.191556][ T5323] __x64_sys_execve+0x97/0xc0
[ 123.191569][ T5323] do_syscall_64+0x166/0x520
[ 123.191579][ T5323] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 123.191589][ T5323]
[ 123.191591][ T5323] Memory state around the buggy address:
[ 123.191598][ T5323] ffff888012e53e80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[ 123.191605][ T5323] ffff888012e53f00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[ 123.191612][ T5323] >ffff888012e53f80: 00 00 00 03 fc fc fc fc fa fb fb fb fc fc fc fc
[ 123.191619][ T5323] ^
[ 123.191626][ T5323] ffff888012e54000: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc
[ 123.191633][ T5323] ffff888012e54080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 123.191639][ T5323] ==================================================================
[ 123.191646][ T5323] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 123.460112][ T5323] CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 123.464592][ T5323] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 123.469484][ T5323] Call Trace:
[ 123.471184][ T5323]
[ 123.472583][ T5323] vpanic+0x56d/0xa60
[ 123.474444][ T5323] ? __pfx_vpanic+0x10/0x10
[ 123.476562][ T5323] panic+0xc5/0xd0
[ 123.478368][ T5323] ? __pfx_panic+0x10/0x10
[ 123.480531][ T5323] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 123.483400][ T5323] ? rcu_is_watching+0x16/0xb0
[ 123.485530][ T5323] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 123.488430][ T5323] check_panic_on_warn+0x89/0xb0
[ 123.490602][ T5323] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 123.493633][ T5323] end_report+0x73/0x170
[ 123.495736][ T5323] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 123.498468][ T5323] kasan_report+0x128/0x150
[ 123.500556][ T5323] ? ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 123.503808][ T5323] ecryptfs_verify_auth_tok_from_key+0x38f/0x3a0
[ 123.506579][ T5323] ecryptfs_keyring_auth_tok_for_sig+0xec/0x250
[ 123.509177][ T5323] ecryptfs_get_tree+0x563/0x1370
[ 123.511430][ T5323] ? __pfx_ecryptfs_get_tree+0x10/0x10
[ 123.513846][ T5323] vfs_get_tree+0x92/0x2a0
[ 123.515952][ T5323] do_new_mount+0x319/0xdc0
[ 123.518068][ T5323] ? __pfx_do_new_mount+0x10/0x10
[ 123.520694][ T5323] ? ns_capable+0x89/0xe0
[ 123.523275][ T5323] ? path_mount+0x647/0x1050
[ 123.526045][ T5323] ? user_path_at+0xd4/0x160
[ 123.528427][ T5323] __se_sys_mount+0x31d/0x420
[ 123.530427][ T5323] ? __pfx___se_sys_mount+0x10/0x10
[ 123.532612][ T5323] ? __x64_sys_mount+0x20/0xc0
[ 123.534636][ T5323] do_syscall_64+0x166/0x520
[ 123.536525][ T5323] ? trace_irq_disable+0x3b/0x140
[ 123.538640][ T5323] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 123.541216][ T5323] ? clear_bhb_loop+0x70/0xc0
[ 123.543341][ T5323] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 123.545937][ T5323] RIP: 0033:0x7fdb5779e159
[ 123.547937][ T5323] 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
[ 123.556162][ T5323] RSP: 002b:00007fdb586a6fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 123.559698][ T5323] RAX: ffffffffffffffda RBX: 00007fdb57a25fa0 RCX: 00007fdb5779e159
[ 123.563036][ T5323] RDX: 0000200000000480 RSI: 0000200000000440 RDI: 0000200000000400
[ 123.566630][ T5323] RBP: 00007fdb5783503b R08: 0000200000000500 R09: 0000000000000000
[ 123.570084][ T5323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 123.573604][ T5323] R13: 00007fdb57a26038 R14: 00007fdb57a25fa0 R15: 00007fff69e7f638
[ 123.577220][ T5323]
[ 123.579373][ T5323] Kernel Offset: disabled
[ 123.581492][ T5323] Rebooting in 86400 seconds..