Date
June 2, 2025, 2:11 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 22.031871] ================================================================== [ 22.032400] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x4a/0x70 [ 22.032887] Read of size 121 at addr ffff888101e0b000 by task kunit_try_catch/306 [ 22.033202] [ 22.033385] CPU: 1 UID: 0 PID: 306 Comm: kunit_try_catch Tainted: G B N 6.15.1-rc1 #1 PREEMPT(voluntary) [ 22.033498] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.033534] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 22.033586] Call Trace: [ 22.033632] <TASK> [ 22.033691] dump_stack_lvl+0x73/0xb0 [ 22.033791] print_report+0xd1/0x650 [ 22.033849] ? __virt_addr_valid+0x1db/0x2d0 [ 22.033908] ? _copy_to_user+0x4a/0x70 [ 22.033958] ? kasan_complete_mode_report_info+0x2a/0x200 [ 22.034003] ? _copy_to_user+0x4a/0x70 [ 22.034046] kasan_report+0x141/0x180 [ 22.034098] ? _copy_to_user+0x4a/0x70 [ 22.034158] kasan_check_range+0x10c/0x1c0 [ 22.034223] __kasan_check_read+0x15/0x20 [ 22.034274] _copy_to_user+0x4a/0x70 [ 22.034320] copy_user_test_oob+0x364/0x10f0 [ 22.034375] ? __pfx_copy_user_test_oob+0x10/0x10 [ 22.034418] ? finish_task_switch.isra.0+0x153/0x700 [ 22.034467] ? __switch_to+0x5d9/0xf60 [ 22.034519] ? dequeue_task_fair+0x166/0x4e0 [ 22.034593] ? __schedule+0x10cc/0x2b30 [ 22.034646] ? __pfx_read_tsc+0x10/0x10 [ 22.034678] ? ktime_get_ts64+0x86/0x230 [ 22.034709] kunit_try_run_case+0x1a5/0x480 [ 22.034738] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.034788] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 22.034817] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 22.034844] ? __kthread_parkme+0x82/0x180 [ 22.034869] ? preempt_count_sub+0x50/0x80 [ 22.034898] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.034926] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.034952] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 22.034978] kthread+0x337/0x6f0 [ 22.035000] ? trace_preempt_on+0x20/0xc0 [ 22.035027] ? __pfx_kthread+0x10/0x10 [ 22.035050] ? _raw_spin_unlock_irq+0x47/0x80 [ 22.035074] ? calculate_sigpending+0x7b/0xa0 [ 22.035102] ? __pfx_kthread+0x10/0x10 [ 22.035140] ret_from_fork+0x41/0x80 [ 22.035167] ? __pfx_kthread+0x10/0x10 [ 22.035189] ret_from_fork_asm+0x1a/0x30 [ 22.035226] </TASK> [ 22.035243] [ 22.048694] Allocated by task 306: [ 22.049149] kasan_save_stack+0x45/0x70 [ 22.049641] kasan_save_track+0x18/0x40 [ 22.050041] kasan_save_alloc_info+0x3b/0x50 [ 22.050374] __kasan_kmalloc+0xb7/0xc0 [ 22.050753] __kmalloc_noprof+0x1c9/0x500 [ 22.051054] kunit_kmalloc_array+0x25/0x60 [ 22.051466] copy_user_test_oob+0xab/0x10f0 [ 22.051898] kunit_try_run_case+0x1a5/0x480 [ 22.052289] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.052639] kthread+0x337/0x6f0 [ 22.053008] ret_from_fork+0x41/0x80 [ 22.053323] ret_from_fork_asm+0x1a/0x30 [ 22.053644] [ 22.053821] The buggy address belongs to the object at ffff888101e0b000 [ 22.053821] which belongs to the cache kmalloc-128 of size 128 [ 22.054704] The buggy address is located 0 bytes inside of [ 22.054704] allocated 120-byte region [ffff888101e0b000, ffff888101e0b078) [ 22.055643] [ 22.055982] The buggy address belongs to the physical page: [ 22.056589] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101e0b [ 22.057128] flags: 0x200000000000000(node=0|zone=2) [ 22.057589] page_type: f5(slab) [ 22.057857] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 22.058522] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 22.058970] page dumped because: kasan: bad access detected [ 22.059217] [ 22.059351] Memory state around the buggy address: [ 22.059593] ffff888101e0af00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.060315] ffff888101e0af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.061312] >ffff888101e0b000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 22.062002] ^ [ 22.062567] ffff888101e0b080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.063104] ffff888101e0b100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.063585] ==================================================================