Date
July 3, 2025, 11:10 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.600986] ================================================================== [ 15.601333] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 15.601755] Read of size 121 at addr ffff8881039bf700 by task kunit_try_catch/303 [ 15.602053] [ 15.602173] CPU: 1 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 15.602217] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.602253] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.602275] Call Trace: [ 15.602292] <TASK> [ 15.602309] dump_stack_lvl+0x73/0xb0 [ 15.602336] print_report+0xd1/0x650 [ 15.602361] ? __virt_addr_valid+0x1db/0x2d0 [ 15.602384] ? _copy_to_user+0x3c/0x70 [ 15.602422] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.602447] ? _copy_to_user+0x3c/0x70 [ 15.602467] kasan_report+0x141/0x180 [ 15.602490] ? _copy_to_user+0x3c/0x70 [ 15.602522] kasan_check_range+0x10c/0x1c0 [ 15.602547] __kasan_check_read+0x15/0x20 [ 15.602566] _copy_to_user+0x3c/0x70 [ 15.602587] copy_user_test_oob+0x364/0x10f0 [ 15.602614] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.602638] ? finish_task_switch.isra.0+0x153/0x700 [ 15.602661] ? __switch_to+0x47/0xf50 [ 15.602686] ? __schedule+0x10cc/0x2b60 [ 15.602725] ? __pfx_read_tsc+0x10/0x10 [ 15.602747] ? ktime_get_ts64+0x86/0x230 [ 15.602770] kunit_try_run_case+0x1a5/0x480 [ 15.602795] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.602818] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.602842] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.602866] ? __kthread_parkme+0x82/0x180 [ 15.602902] ? preempt_count_sub+0x50/0x80 [ 15.602927] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.602951] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.602975] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.602999] kthread+0x337/0x6f0 [ 15.603019] ? trace_preempt_on+0x20/0xc0 [ 15.603042] ? __pfx_kthread+0x10/0x10 [ 15.603063] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.603085] ? calculate_sigpending+0x7b/0xa0 [ 15.603109] ? __pfx_kthread+0x10/0x10 [ 15.603153] ret_from_fork+0x116/0x1d0 [ 15.603173] ? __pfx_kthread+0x10/0x10 [ 15.603194] ret_from_fork_asm+0x1a/0x30 [ 15.603225] </TASK> [ 15.603238] [ 15.612138] Allocated by task 303: [ 15.612340] kasan_save_stack+0x45/0x70 [ 15.612578] kasan_save_track+0x18/0x40 [ 15.612769] kasan_save_alloc_info+0x3b/0x50 [ 15.612981] __kasan_kmalloc+0xb7/0xc0 [ 15.613209] __kmalloc_noprof+0x1c9/0x500 [ 15.613406] kunit_kmalloc_array+0x25/0x60 [ 15.613606] copy_user_test_oob+0xab/0x10f0 [ 15.613792] kunit_try_run_case+0x1a5/0x480 [ 15.613936] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.614133] kthread+0x337/0x6f0 [ 15.614310] ret_from_fork+0x116/0x1d0 [ 15.614523] ret_from_fork_asm+0x1a/0x30 [ 15.614727] [ 15.614843] The buggy address belongs to the object at ffff8881039bf700 [ 15.614843] which belongs to the cache kmalloc-128 of size 128 [ 15.615358] The buggy address is located 0 bytes inside of [ 15.615358] allocated 120-byte region [ffff8881039bf700, ffff8881039bf778) [ 15.615844] [ 15.615924] The buggy address belongs to the physical page: [ 15.616227] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039bf [ 15.616576] flags: 0x200000000000000(node=0|zone=2) [ 15.616796] page_type: f5(slab) [ 15.616958] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.617380] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.617766] page dumped because: kasan: bad access detected [ 15.618029] [ 15.618136] Memory state around the buggy address: [ 15.618355] ffff8881039bf600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.618749] ffff8881039bf680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.619048] >ffff8881039bf700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.619262] ^ [ 15.619466] ffff8881039bf780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.619891] ffff8881039bf800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.620336] ==================================================================