Date
July 23, 2025, 3:10 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 29.305919] ================================================================== [ 29.306294] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 29.306800] Read of size 121 at addr ffff8881060a7500 by task kunit_try_catch/334 [ 29.307384] [ 29.307598] CPU: 0 UID: 0 PID: 334 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250723 #1 PREEMPT(voluntary) [ 29.307658] Tainted: [B]=BAD_PAGE, [N]=TEST [ 29.307672] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 29.307696] Call Trace: [ 29.307715] <TASK> [ 29.307940] dump_stack_lvl+0x73/0xb0 [ 29.307984] print_report+0xd1/0x640 [ 29.308012] ? __virt_addr_valid+0x1db/0x2d0 [ 29.308042] ? _copy_to_user+0x3c/0x70 [ 29.308067] ? kasan_complete_mode_report_info+0x2a/0x200 [ 29.308095] ? _copy_to_user+0x3c/0x70 [ 29.308117] kasan_report+0x141/0x180 [ 29.308140] ? _copy_to_user+0x3c/0x70 [ 29.308178] kasan_check_range+0x10c/0x1c0 [ 29.308203] __kasan_check_read+0x15/0x20 [ 29.308228] _copy_to_user+0x3c/0x70 [ 29.308249] copy_user_test_oob+0x364/0x10f0 [ 29.308277] ? __pfx_copy_user_test_oob+0x10/0x10 [ 29.308301] ? finish_task_switch.isra.0+0x153/0x700 [ 29.308324] ? __switch_to+0x47/0xf80 [ 29.308353] ? __schedule+0x10da/0x2b60 [ 29.308380] ? __pfx_read_tsc+0x10/0x10 [ 29.308406] ? ktime_get_ts64+0x86/0x230 [ 29.308457] kunit_try_run_case+0x1a5/0x480 [ 29.308483] ? __pfx_kunit_try_run_case+0x10/0x10 [ 29.308507] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 29.308545] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 29.308570] ? __kthread_parkme+0x82/0x180 [ 29.308593] ? preempt_count_sub+0x50/0x80 [ 29.308616] ? __pfx_kunit_try_run_case+0x10/0x10 [ 29.308641] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 29.308666] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 29.308691] kthread+0x337/0x6f0 [ 29.308712] ? trace_preempt_on+0x20/0xc0 [ 29.308738] ? __pfx_kthread+0x10/0x10 [ 29.308761] ? _raw_spin_unlock_irq+0x47/0x80 [ 29.308786] ? calculate_sigpending+0x7b/0xa0 [ 29.308811] ? __pfx_kthread+0x10/0x10 [ 29.308834] ret_from_fork+0x116/0x1d0 [ 29.308855] ? __pfx_kthread+0x10/0x10 [ 29.308877] ret_from_fork_asm+0x1a/0x30 [ 29.308909] </TASK> [ 29.308923] [ 29.319777] Allocated by task 334: [ 29.320006] kasan_save_stack+0x45/0x70 [ 29.320206] kasan_save_track+0x18/0x40 [ 29.320343] kasan_save_alloc_info+0x3b/0x50 [ 29.320647] __kasan_kmalloc+0xb7/0xc0 [ 29.321012] __kmalloc_noprof+0x1ca/0x510 [ 29.321283] kunit_kmalloc_array+0x25/0x60 [ 29.321536] copy_user_test_oob+0xab/0x10f0 [ 29.321749] kunit_try_run_case+0x1a5/0x480 [ 29.321909] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 29.322168] kthread+0x337/0x6f0 [ 29.322506] ret_from_fork+0x116/0x1d0 [ 29.322773] ret_from_fork_asm+0x1a/0x30 [ 29.322916] [ 29.322985] The buggy address belongs to the object at ffff8881060a7500 [ 29.322985] which belongs to the cache kmalloc-128 of size 128 [ 29.323740] The buggy address is located 0 bytes inside of [ 29.323740] allocated 120-byte region [ffff8881060a7500, ffff8881060a7578) [ 29.325017] [ 29.325114] The buggy address belongs to the physical page: [ 29.325595] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1060a7 [ 29.325935] flags: 0x200000000000000(node=0|zone=2) [ 29.326238] page_type: f5(slab) [ 29.326423] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 29.326909] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 29.327442] page dumped because: kasan: bad access detected [ 29.327674] [ 29.327765] Memory state around the buggy address: [ 29.327925] ffff8881060a7400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.328252] ffff8881060a7480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.328549] >ffff8881060a7500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 29.328838] ^ [ 29.329357] ffff8881060a7580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.329576] ffff8881060a7600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.329926] ==================================================================