Date
July 2, 2025, 11:09 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.402994] ================================================================== [ 15.403681] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 15.404115] Read of size 121 at addr ffff888102c8ba00 by task kunit_try_catch/304 [ 15.404466] [ 15.404666] CPU: 1 UID: 0 PID: 304 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 15.404724] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.404754] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.404777] Call Trace: [ 15.404792] <TASK> [ 15.404812] dump_stack_lvl+0x73/0xb0 [ 15.404841] print_report+0xd1/0x650 [ 15.404883] ? __virt_addr_valid+0x1db/0x2d0 [ 15.404908] ? _copy_to_user+0x3c/0x70 [ 15.404927] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.404951] ? _copy_to_user+0x3c/0x70 [ 15.404970] kasan_report+0x141/0x180 [ 15.405003] ? _copy_to_user+0x3c/0x70 [ 15.405028] kasan_check_range+0x10c/0x1c0 [ 15.405052] __kasan_check_read+0x15/0x20 [ 15.405083] _copy_to_user+0x3c/0x70 [ 15.405104] copy_user_test_oob+0x364/0x10f0 [ 15.405129] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.405153] ? finish_task_switch.isra.0+0x153/0x700 [ 15.405176] ? __switch_to+0x47/0xf50 [ 15.405203] ? __schedule+0x10cc/0x2b60 [ 15.405226] ? __pfx_read_tsc+0x10/0x10 [ 15.405248] ? ktime_get_ts64+0x86/0x230 [ 15.405273] kunit_try_run_case+0x1a5/0x480 [ 15.405297] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.405320] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.405354] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.405379] ? __kthread_parkme+0x82/0x180 [ 15.405400] ? preempt_count_sub+0x50/0x80 [ 15.405425] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.405449] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.405473] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.405498] kthread+0x337/0x6f0 [ 15.405517] ? trace_preempt_on+0x20/0xc0 [ 15.405543] ? __pfx_kthread+0x10/0x10 [ 15.405565] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.405588] ? calculate_sigpending+0x7b/0xa0 [ 15.405613] ? __pfx_kthread+0x10/0x10 [ 15.405635] ret_from_fork+0x116/0x1d0 [ 15.405654] ? __pfx_kthread+0x10/0x10 [ 15.405676] ret_from_fork_asm+0x1a/0x30 [ 15.405708] </TASK> [ 15.405720] [ 15.418004] Allocated by task 304: [ 15.418190] kasan_save_stack+0x45/0x70 [ 15.418366] kasan_save_track+0x18/0x40 [ 15.418588] kasan_save_alloc_info+0x3b/0x50 [ 15.418799] __kasan_kmalloc+0xb7/0xc0 [ 15.418977] __kmalloc_noprof+0x1c9/0x500 [ 15.419170] kunit_kmalloc_array+0x25/0x60 [ 15.419421] copy_user_test_oob+0xab/0x10f0 [ 15.419766] kunit_try_run_case+0x1a5/0x480 [ 15.419976] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.420373] kthread+0x337/0x6f0 [ 15.420575] ret_from_fork+0x116/0x1d0 [ 15.420973] ret_from_fork_asm+0x1a/0x30 [ 15.421171] [ 15.421252] The buggy address belongs to the object at ffff888102c8ba00 [ 15.421252] which belongs to the cache kmalloc-128 of size 128 [ 15.421777] The buggy address is located 0 bytes inside of [ 15.421777] allocated 120-byte region [ffff888102c8ba00, ffff888102c8ba78) [ 15.422259] [ 15.422333] The buggy address belongs to the physical page: [ 15.422601] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c8b [ 15.422952] flags: 0x200000000000000(node=0|zone=2) [ 15.423240] page_type: f5(slab) [ 15.423408] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.423854] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.424179] page dumped because: kasan: bad access detected [ 15.424454] [ 15.424560] Memory state around the buggy address: [ 15.424877] ffff888102c8b900: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.425141] ffff888102c8b980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.425414] >ffff888102c8ba00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.425907] ^ [ 15.426139] ffff888102c8ba80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.426472] ffff888102c8bb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.426786] ==================================================================