Date
May 23, 2025, 11:07 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.422272] ================================================================== [ 16.422936] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.423379] Write of size 121 at addr ffff888102a4e100 by task kunit_try_catch/304 [ 16.423828] [ 16.423950] CPU: 1 UID: 0 PID: 304 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT(voluntary) [ 16.424003] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.424038] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.424079] Call Trace: [ 16.424094] <TASK> [ 16.424129] dump_stack_lvl+0x73/0xb0 [ 16.424163] print_report+0xd1/0x650 [ 16.424189] ? __virt_addr_valid+0x1db/0x2d0 [ 16.424213] ? _copy_from_user+0x32/0x90 [ 16.424233] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.424257] ? _copy_from_user+0x32/0x90 [ 16.424278] kasan_report+0x141/0x180 [ 16.424302] ? _copy_from_user+0x32/0x90 [ 16.424358] kasan_check_range+0x10c/0x1c0 [ 16.424380] __kasan_check_write+0x18/0x20 [ 16.424400] _copy_from_user+0x32/0x90 [ 16.424439] copy_user_test_oob+0x2be/0x10f0 [ 16.424464] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.424484] ? finish_task_switch.isra.0+0x153/0x700 [ 16.424511] ? __switch_to+0x5d9/0xf60 [ 16.424533] ? dequeue_task_fair+0x166/0x4e0 [ 16.424558] ? __schedule+0x10cc/0x2b30 [ 16.424584] ? __pfx_read_tsc+0x10/0x10 [ 16.424605] ? ktime_get_ts64+0x86/0x230 [ 16.424632] kunit_try_run_case+0x1a5/0x480 [ 16.424658] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.424681] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.424706] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.424730] ? __kthread_parkme+0x82/0x180 [ 16.424754] ? preempt_count_sub+0x50/0x80 [ 16.424780] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.424804] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.424828] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.424852] kthread+0x337/0x6f0 [ 16.424870] ? trace_preempt_on+0x20/0xc0 [ 16.424896] ? __pfx_kthread+0x10/0x10 [ 16.424916] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.424939] ? calculate_sigpending+0x7b/0xa0 [ 16.424962] ? __pfx_kthread+0x10/0x10 [ 16.424982] ret_from_fork+0x41/0x80 [ 16.425005] ? __pfx_kthread+0x10/0x10 [ 16.425025] ret_from_fork_asm+0x1a/0x30 [ 16.425057] </TASK> [ 16.425071] [ 16.433043] Allocated by task 304: [ 16.433177] kasan_save_stack+0x45/0x70 [ 16.433394] kasan_save_track+0x18/0x40 [ 16.433767] kasan_save_alloc_info+0x3b/0x50 [ 16.433995] __kasan_kmalloc+0xb7/0xc0 [ 16.434192] __kmalloc_noprof+0x1c9/0x500 [ 16.434406] kunit_kmalloc_array+0x25/0x60 [ 16.434628] copy_user_test_oob+0xab/0x10f0 [ 16.434812] kunit_try_run_case+0x1a5/0x480 [ 16.435032] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.435245] kthread+0x337/0x6f0 [ 16.435444] ret_from_fork+0x41/0x80 [ 16.435660] ret_from_fork_asm+0x1a/0x30 [ 16.435912] [ 16.435989] The buggy address belongs to the object at ffff888102a4e100 [ 16.435989] which belongs to the cache kmalloc-128 of size 128 [ 16.436529] The buggy address is located 0 bytes inside of [ 16.436529] allocated 120-byte region [ffff888102a4e100, ffff888102a4e178) [ 16.436933] [ 16.437010] The buggy address belongs to the physical page: [ 16.437187] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a4e [ 16.437744] flags: 0x200000000000000(node=0|zone=2) [ 16.438012] page_type: f5(slab) [ 16.438185] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.438590] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.438848] page dumped because: kasan: bad access detected [ 16.439048] [ 16.439171] Memory state around the buggy address: [ 16.439446] ffff888102a4e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.439805] ffff888102a4e080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.440107] >ffff888102a4e100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.440488] ^ [ 16.440813] ffff888102a4e180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.441122] ffff888102a4e200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.441535] ==================================================================