Date
July 3, 2025, 6:13 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.432878] ================================================================== [ 15.433244] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 15.433505] Read of size 121 at addr ffff8881029dbd00 by task kunit_try_catch/303 [ 15.433801] [ 15.433910] CPU: 0 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 15.433954] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.433968] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.433988] Call Trace: [ 15.434002] <TASK> [ 15.434016] dump_stack_lvl+0x73/0xb0 [ 15.434043] print_report+0xd1/0x650 [ 15.434068] ? __virt_addr_valid+0x1db/0x2d0 [ 15.434090] ? _copy_to_user+0x3c/0x70 [ 15.434123] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.434146] ? _copy_to_user+0x3c/0x70 [ 15.434166] kasan_report+0x141/0x180 [ 15.434189] ? _copy_to_user+0x3c/0x70 [ 15.434213] kasan_check_range+0x10c/0x1c0 [ 15.434237] __kasan_check_read+0x15/0x20 [ 15.434257] _copy_to_user+0x3c/0x70 [ 15.434277] copy_user_test_oob+0x364/0x10f0 [ 15.434304] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.434327] ? finish_task_switch.isra.0+0x153/0x700 [ 15.434350] ? __switch_to+0x47/0xf50 [ 15.434374] ? __schedule+0x10cc/0x2b60 [ 15.434398] ? __pfx_read_tsc+0x10/0x10 [ 15.434432] ? ktime_get_ts64+0x86/0x230 [ 15.434457] kunit_try_run_case+0x1a5/0x480 [ 15.434481] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.434504] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.434528] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.434551] ? __kthread_parkme+0x82/0x180 [ 15.434573] ? preempt_count_sub+0x50/0x80 [ 15.434597] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.434622] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.434645] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.434670] kthread+0x337/0x6f0 [ 15.434690] ? trace_preempt_on+0x20/0xc0 [ 15.434715] ? __pfx_kthread+0x10/0x10 [ 15.434736] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.434757] ? calculate_sigpending+0x7b/0xa0 [ 15.434782] ? __pfx_kthread+0x10/0x10 [ 15.434804] ret_from_fork+0x116/0x1d0 [ 15.434823] ? __pfx_kthread+0x10/0x10 [ 15.434844] ret_from_fork_asm+0x1a/0x30 [ 15.434875] </TASK> [ 15.434887] [ 15.444863] Allocated by task 303: [ 15.445054] kasan_save_stack+0x45/0x70 [ 15.445262] kasan_save_track+0x18/0x40 [ 15.445704] kasan_save_alloc_info+0x3b/0x50 [ 15.445869] __kasan_kmalloc+0xb7/0xc0 [ 15.446172] __kmalloc_noprof+0x1c9/0x500 [ 15.446490] kunit_kmalloc_array+0x25/0x60 [ 15.446670] copy_user_test_oob+0xab/0x10f0 [ 15.446979] kunit_try_run_case+0x1a5/0x480 [ 15.447184] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.447533] kthread+0x337/0x6f0 [ 15.447709] ret_from_fork+0x116/0x1d0 [ 15.447888] ret_from_fork_asm+0x1a/0x30 [ 15.448065] [ 15.448171] The buggy address belongs to the object at ffff8881029dbd00 [ 15.448171] which belongs to the cache kmalloc-128 of size 128 [ 15.448887] The buggy address is located 0 bytes inside of [ 15.448887] allocated 120-byte region [ffff8881029dbd00, ffff8881029dbd78) [ 15.449598] [ 15.449766] The buggy address belongs to the physical page: [ 15.449997] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029db [ 15.450495] flags: 0x200000000000000(node=0|zone=2) [ 15.450796] page_type: f5(slab) [ 15.450969] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.451451] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.451770] page dumped because: kasan: bad access detected [ 15.452008] [ 15.452088] Memory state around the buggy address: [ 15.452316] ffff8881029dbc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.452860] ffff8881029dbc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.453222] >ffff8881029dbd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.453752] ^ [ 15.454052] ffff8881029dbd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.454473] ffff8881029dbe00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.454839] ==================================================================