Date
July 3, 2025, 6:13 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.399916] ================================================================== [ 15.401077] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 15.401771] Write of size 121 at addr ffff8881029dbd00 by task kunit_try_catch/303 [ 15.402042] [ 15.402146] CPU: 0 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 15.402196] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.402209] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.402233] Call Trace: [ 15.402247] <TASK> [ 15.402269] dump_stack_lvl+0x73/0xb0 [ 15.402299] print_report+0xd1/0x650 [ 15.402335] ? __virt_addr_valid+0x1db/0x2d0 [ 15.402361] ? _copy_from_user+0x32/0x90 [ 15.402380] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.402404] ? _copy_from_user+0x32/0x90 [ 15.402424] kasan_report+0x141/0x180 [ 15.402447] ? _copy_from_user+0x32/0x90 [ 15.402471] kasan_check_range+0x10c/0x1c0 [ 15.402495] __kasan_check_write+0x18/0x20 [ 15.402515] _copy_from_user+0x32/0x90 [ 15.402536] copy_user_test_oob+0x2be/0x10f0 [ 15.402563] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.402586] ? finish_task_switch.isra.0+0x153/0x700 [ 15.402610] ? __switch_to+0x47/0xf50 [ 15.402637] ? __schedule+0x10cc/0x2b60 [ 15.402659] ? __pfx_read_tsc+0x10/0x10 [ 15.402682] ? ktime_get_ts64+0x86/0x230 [ 15.402708] kunit_try_run_case+0x1a5/0x480 [ 15.402732] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.402755] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.402780] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.402806] ? __kthread_parkme+0x82/0x180 [ 15.402828] ? preempt_count_sub+0x50/0x80 [ 15.402852] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.402877] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.402901] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.402926] kthread+0x337/0x6f0 [ 15.402946] ? trace_preempt_on+0x20/0xc0 [ 15.402971] ? __pfx_kthread+0x10/0x10 [ 15.402993] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.403015] ? calculate_sigpending+0x7b/0xa0 [ 15.403039] ? __pfx_kthread+0x10/0x10 [ 15.403061] ret_from_fork+0x116/0x1d0 [ 15.403081] ? __pfx_kthread+0x10/0x10 [ 15.403162] ret_from_fork_asm+0x1a/0x30 [ 15.403197] </TASK> [ 15.403218] [ 15.417029] Allocated by task 303: [ 15.417230] kasan_save_stack+0x45/0x70 [ 15.417737] kasan_save_track+0x18/0x40 [ 15.417983] kasan_save_alloc_info+0x3b/0x50 [ 15.418319] __kasan_kmalloc+0xb7/0xc0 [ 15.418528] __kmalloc_noprof+0x1c9/0x500 [ 15.418721] kunit_kmalloc_array+0x25/0x60 [ 15.418909] copy_user_test_oob+0xab/0x10f0 [ 15.419114] kunit_try_run_case+0x1a5/0x480 [ 15.419315] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.419546] kthread+0x337/0x6f0 [ 15.419702] ret_from_fork+0x116/0x1d0 [ 15.419876] ret_from_fork_asm+0x1a/0x30 [ 15.420055] [ 15.420598] The buggy address belongs to the object at ffff8881029dbd00 [ 15.420598] which belongs to the cache kmalloc-128 of size 128 [ 15.421500] The buggy address is located 0 bytes inside of [ 15.421500] allocated 120-byte region [ffff8881029dbd00, ffff8881029dbd78) [ 15.422415] [ 15.422533] The buggy address belongs to the physical page: [ 15.422950] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029db [ 15.423656] flags: 0x200000000000000(node=0|zone=2) [ 15.424150] page_type: f5(slab) [ 15.424329] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.424641] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.424942] page dumped because: kasan: bad access detected [ 15.425179] [ 15.425271] Memory state around the buggy address: [ 15.425872] ffff8881029dbc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.426336] ffff8881029dbc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.426827] >ffff8881029dbd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.427356] ^ [ 15.427856] ffff8881029dbd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.428167] ffff8881029dbe00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.428874] ==================================================================