Date
May 23, 2025, 11:07 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.444704] ================================================================== [ 16.445089] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x4a/0x70 [ 16.445398] Read of size 121 at addr ffff888102a4e100 by task kunit_try_catch/304 [ 16.445838] [ 16.445957] CPU: 1 UID: 0 PID: 304 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT(voluntary) [ 16.446006] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.446020] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.446042] Call Trace: [ 16.446059] <TASK> [ 16.446076] dump_stack_lvl+0x73/0xb0 [ 16.446124] print_report+0xd1/0x650 [ 16.446149] ? __virt_addr_valid+0x1db/0x2d0 [ 16.446172] ? _copy_to_user+0x4a/0x70 [ 16.446191] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.446215] ? _copy_to_user+0x4a/0x70 [ 16.446235] kasan_report+0x141/0x180 [ 16.446259] ? _copy_to_user+0x4a/0x70 [ 16.446283] kasan_check_range+0x10c/0x1c0 [ 16.446316] __kasan_check_read+0x15/0x20 [ 16.446337] _copy_to_user+0x4a/0x70 [ 16.446358] copy_user_test_oob+0x364/0x10f0 [ 16.446399] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.446420] ? finish_task_switch.isra.0+0x153/0x700 [ 16.446445] ? __switch_to+0x5d9/0xf60 [ 16.446466] ? dequeue_task_fair+0x166/0x4e0 [ 16.446491] ? __schedule+0x10cc/0x2b30 [ 16.446514] ? __pfx_read_tsc+0x10/0x10 [ 16.446534] ? ktime_get_ts64+0x86/0x230 [ 16.446561] kunit_try_run_case+0x1a5/0x480 [ 16.446604] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.446628] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.446652] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.446677] ? __kthread_parkme+0x82/0x180 [ 16.446706] ? preempt_count_sub+0x50/0x80 [ 16.446731] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.446755] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.446779] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.446803] kthread+0x337/0x6f0 [ 16.446821] ? trace_preempt_on+0x20/0xc0 [ 16.446846] ? __pfx_kthread+0x10/0x10 [ 16.446865] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.446887] ? calculate_sigpending+0x7b/0xa0 [ 16.446910] ? __pfx_kthread+0x10/0x10 [ 16.446931] ret_from_fork+0x41/0x80 [ 16.446952] ? __pfx_kthread+0x10/0x10 [ 16.446971] ret_from_fork_asm+0x1a/0x30 [ 16.447002] </TASK> [ 16.447014] [ 16.454937] Allocated by task 304: [ 16.455107] kasan_save_stack+0x45/0x70 [ 16.455349] kasan_save_track+0x18/0x40 [ 16.455609] kasan_save_alloc_info+0x3b/0x50 [ 16.455891] __kasan_kmalloc+0xb7/0xc0 [ 16.456023] __kmalloc_noprof+0x1c9/0x500 [ 16.456161] kunit_kmalloc_array+0x25/0x60 [ 16.456618] copy_user_test_oob+0xab/0x10f0 [ 16.456830] kunit_try_run_case+0x1a5/0x480 [ 16.457055] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.457389] kthread+0x337/0x6f0 [ 16.457586] ret_from_fork+0x41/0x80 [ 16.457788] ret_from_fork_asm+0x1a/0x30 [ 16.457985] [ 16.458080] The buggy address belongs to the object at ffff888102a4e100 [ 16.458080] which belongs to the cache kmalloc-128 of size 128 [ 16.458730] The buggy address is located 0 bytes inside of [ 16.458730] allocated 120-byte region [ffff888102a4e100, ffff888102a4e178) [ 16.459074] [ 16.459146] The buggy address belongs to the physical page: [ 16.459395] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a4e [ 16.460123] flags: 0x200000000000000(node=0|zone=2) [ 16.460375] page_type: f5(slab) [ 16.460576] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.460912] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.461228] page dumped because: kasan: bad access detected [ 16.461459] [ 16.461559] Memory state around the buggy address: [ 16.461768] ffff888102a4e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.462040] ffff888102a4e080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.462340] >ffff888102a4e100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.462618] ^ [ 16.462832] ffff888102a4e180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.463098] ffff888102a4e200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.463420] ==================================================================