Date
July 12, 2025, 11:09 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.811629] ================================================================== [ 16.812484] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.812719] Write of size 121 at addr ffff888103a67500 by task kunit_try_catch/302 [ 16.812958] [ 16.813054] CPU: 0 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 16.813101] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.813114] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.813138] Call Trace: [ 16.813151] <TASK> [ 16.813171] dump_stack_lvl+0x73/0xb0 [ 16.813203] print_report+0xd1/0x610 [ 16.813228] ? __virt_addr_valid+0x1db/0x2d0 [ 16.813254] ? _copy_from_user+0x32/0x90 [ 16.813286] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.813311] ? _copy_from_user+0x32/0x90 [ 16.813333] kasan_report+0x141/0x180 [ 16.813356] ? _copy_from_user+0x32/0x90 [ 16.813381] kasan_check_range+0x10c/0x1c0 [ 16.813406] __kasan_check_write+0x18/0x20 [ 16.813427] _copy_from_user+0x32/0x90 [ 16.813450] copy_user_test_oob+0x2be/0x10f0 [ 16.813518] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.813544] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 16.813589] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.813619] kunit_try_run_case+0x1a5/0x480 [ 16.813644] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.813669] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.813718] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.813755] ? __kthread_parkme+0x82/0x180 [ 16.813789] ? preempt_count_sub+0x50/0x80 [ 16.813816] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.813842] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.813870] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.813898] kthread+0x337/0x6f0 [ 16.813918] ? trace_preempt_on+0x20/0xc0 [ 16.813964] ? __pfx_kthread+0x10/0x10 [ 16.813987] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.814021] ? calculate_sigpending+0x7b/0xa0 [ 16.814059] ? __pfx_kthread+0x10/0x10 [ 16.814082] ret_from_fork+0x116/0x1d0 [ 16.814103] ? __pfx_kthread+0x10/0x10 [ 16.814125] ret_from_fork_asm+0x1a/0x30 [ 16.814158] </TASK> [ 16.814170] [ 16.820922] Allocated by task 302: [ 16.821050] kasan_save_stack+0x45/0x70 [ 16.821250] kasan_save_track+0x18/0x40 [ 16.821455] kasan_save_alloc_info+0x3b/0x50 [ 16.821668] __kasan_kmalloc+0xb7/0xc0 [ 16.821849] __kmalloc_noprof+0x1c9/0x500 [ 16.822046] kunit_kmalloc_array+0x25/0x60 [ 16.822196] copy_user_test_oob+0xab/0x10f0 [ 16.822423] kunit_try_run_case+0x1a5/0x480 [ 16.822594] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.822812] kthread+0x337/0x6f0 [ 16.822931] ret_from_fork+0x116/0x1d0 [ 16.823061] ret_from_fork_asm+0x1a/0x30 [ 16.823255] [ 16.823359] The buggy address belongs to the object at ffff888103a67500 [ 16.823359] which belongs to the cache kmalloc-128 of size 128 [ 16.823894] The buggy address is located 0 bytes inside of [ 16.823894] allocated 120-byte region [ffff888103a67500, ffff888103a67578) [ 16.824406] [ 16.824524] The buggy address belongs to the physical page: [ 16.824755] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a67 [ 16.825086] flags: 0x200000000000000(node=0|zone=2) [ 16.825302] page_type: f5(slab) [ 16.825485] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.825744] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.825966] page dumped because: kasan: bad access detected [ 16.826167] [ 16.826279] Memory state around the buggy address: [ 16.826501] ffff888103a67400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.826821] ffff888103a67480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.827135] >ffff888103a67500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.827421] ^ [ 16.827689] ffff888103a67580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.827900] ffff888103a67600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.828155] ==================================================================