Date
July 9, 2025, 2:07 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.648456] ================================================================== [ 16.649125] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.649481] Write of size 121 at addr ffff8881029c7e00 by task kunit_try_catch/302 [ 16.649752] [ 16.649875] CPU: 0 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 16.649927] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.649940] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.649964] Call Trace: [ 16.649978] <TASK> [ 16.650001] dump_stack_lvl+0x73/0xb0 [ 16.650034] print_report+0xd1/0x650 [ 16.650061] ? __virt_addr_valid+0x1db/0x2d0 [ 16.650112] ? _copy_from_user+0x32/0x90 [ 16.650147] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.650172] ? _copy_from_user+0x32/0x90 [ 16.650195] kasan_report+0x141/0x180 [ 16.650218] ? _copy_from_user+0x32/0x90 [ 16.650244] kasan_check_range+0x10c/0x1c0 [ 16.650269] __kasan_check_write+0x18/0x20 [ 16.650290] _copy_from_user+0x32/0x90 [ 16.650312] copy_user_test_oob+0x2be/0x10f0 [ 16.650340] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.650365] ? finish_task_switch.isra.0+0x153/0x700 [ 16.650391] ? __switch_to+0x47/0xf50 [ 16.650419] ? __schedule+0x10cc/0x2b60 [ 16.650444] ? __pfx_read_tsc+0x10/0x10 [ 16.650468] ? ktime_get_ts64+0x86/0x230 [ 16.650495] kunit_try_run_case+0x1a5/0x480 [ 16.650520] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.650544] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.650571] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.650607] ? __kthread_parkme+0x82/0x180 [ 16.650630] ? preempt_count_sub+0x50/0x80 [ 16.650655] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.650682] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.650707] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.650734] kthread+0x337/0x6f0 [ 16.650754] ? trace_preempt_on+0x20/0xc0 [ 16.650781] ? __pfx_kthread+0x10/0x10 [ 16.650835] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.650858] ? calculate_sigpending+0x7b/0xa0 [ 16.650886] ? __pfx_kthread+0x10/0x10 [ 16.650909] ret_from_fork+0x116/0x1d0 [ 16.650929] ? __pfx_kthread+0x10/0x10 [ 16.650951] ret_from_fork_asm+0x1a/0x30 [ 16.650986] </TASK> [ 16.650998] [ 16.658770] Allocated by task 302: [ 16.658918] kasan_save_stack+0x45/0x70 [ 16.659069] kasan_save_track+0x18/0x40 [ 16.659203] kasan_save_alloc_info+0x3b/0x50 [ 16.659601] __kasan_kmalloc+0xb7/0xc0 [ 16.659807] __kmalloc_noprof+0x1c9/0x500 [ 16.660013] kunit_kmalloc_array+0x25/0x60 [ 16.660219] copy_user_test_oob+0xab/0x10f0 [ 16.660434] kunit_try_run_case+0x1a5/0x480 [ 16.660644] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.660823] kthread+0x337/0x6f0 [ 16.660945] ret_from_fork+0x116/0x1d0 [ 16.661078] ret_from_fork_asm+0x1a/0x30 [ 16.661220] [ 16.661292] The buggy address belongs to the object at ffff8881029c7e00 [ 16.661292] which belongs to the cache kmalloc-128 of size 128 [ 16.661954] The buggy address is located 0 bytes inside of [ 16.661954] allocated 120-byte region [ffff8881029c7e00, ffff8881029c7e78) [ 16.662604] [ 16.662704] The buggy address belongs to the physical page: [ 16.662937] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029c7 [ 16.663188] flags: 0x200000000000000(node=0|zone=2) [ 16.663405] page_type: f5(slab) [ 16.663576] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.663920] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.664179] page dumped because: kasan: bad access detected [ 16.664353] [ 16.664489] Memory state around the buggy address: [ 16.664732] ffff8881029c7d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.665227] ffff8881029c7d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.665447] >ffff8881029c7e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.665671] ^ [ 16.665886] ffff8881029c7e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.666153] ffff8881029c7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.666478] ==================================================================