Date
July 15, 2025, 11:09 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.520984] ================================================================== [ 16.521346] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 16.521643] Read of size 121 at addr ffff8881038e2900 by task kunit_try_catch/302 [ 16.521949] [ 16.522042] CPU: 1 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 16.522085] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.522098] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.522120] Call Trace: [ 16.522134] <TASK> [ 16.522151] dump_stack_lvl+0x73/0xb0 [ 16.522184] print_report+0xd1/0x610 [ 16.522209] ? __virt_addr_valid+0x1db/0x2d0 [ 16.522233] ? _copy_to_user+0x3c/0x70 [ 16.522254] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.522279] ? _copy_to_user+0x3c/0x70 [ 16.522301] kasan_report+0x141/0x180 [ 16.522325] ? _copy_to_user+0x3c/0x70 [ 16.522351] kasan_check_range+0x10c/0x1c0 [ 16.522376] __kasan_check_read+0x15/0x20 [ 16.522402] _copy_to_user+0x3c/0x70 [ 16.522423] copy_user_test_oob+0x364/0x10f0 [ 16.522462] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.522488] ? finish_task_switch.isra.0+0x153/0x700 [ 16.522512] ? __switch_to+0x47/0xf50 [ 16.522538] ? __schedule+0x10cc/0x2b60 [ 16.522562] ? __pfx_read_tsc+0x10/0x10 [ 16.522584] ? ktime_get_ts64+0x86/0x230 [ 16.522610] kunit_try_run_case+0x1a5/0x480 [ 16.522635] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.522661] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.522687] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.522713] ? __kthread_parkme+0x82/0x180 [ 16.522736] ? preempt_count_sub+0x50/0x80 [ 16.522773] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.522800] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.522826] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.522854] kthread+0x337/0x6f0 [ 16.522875] ? trace_preempt_on+0x20/0xc0 [ 16.522899] ? __pfx_kthread+0x10/0x10 [ 16.522921] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.522945] ? calculate_sigpending+0x7b/0xa0 [ 16.522970] ? __pfx_kthread+0x10/0x10 [ 16.522994] ret_from_fork+0x116/0x1d0 [ 16.523014] ? __pfx_kthread+0x10/0x10 [ 16.523037] ret_from_fork_asm+0x1a/0x30 [ 16.523068] </TASK> [ 16.523080] [ 16.530538] Allocated by task 302: [ 16.530680] kasan_save_stack+0x45/0x70 [ 16.530850] kasan_save_track+0x18/0x40 [ 16.530999] kasan_save_alloc_info+0x3b/0x50 [ 16.531155] __kasan_kmalloc+0xb7/0xc0 [ 16.531327] __kmalloc_noprof+0x1c9/0x500 [ 16.531521] kunit_kmalloc_array+0x25/0x60 [ 16.531728] copy_user_test_oob+0xab/0x10f0 [ 16.531951] kunit_try_run_case+0x1a5/0x480 [ 16.532153] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.532332] kthread+0x337/0x6f0 [ 16.532454] ret_from_fork+0x116/0x1d0 [ 16.532587] ret_from_fork_asm+0x1a/0x30 [ 16.532789] [ 16.532874] The buggy address belongs to the object at ffff8881038e2900 [ 16.532874] which belongs to the cache kmalloc-128 of size 128 [ 16.533377] The buggy address is located 0 bytes inside of [ 16.533377] allocated 120-byte region [ffff8881038e2900, ffff8881038e2978) [ 16.533748] [ 16.533831] The buggy address belongs to the physical page: [ 16.534004] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1038e2 [ 16.534656] flags: 0x200000000000000(node=0|zone=2) [ 16.534904] page_type: f5(slab) [ 16.535072] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.535410] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.535697] page dumped because: kasan: bad access detected [ 16.535943] [ 16.536042] Memory state around the buggy address: [ 16.536278] ffff8881038e2800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.536589] ffff8881038e2880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.536817] >ffff8881038e2900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.537036] ^ [ 16.537331] ffff8881038e2980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.537834] ffff8881038e2a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.538076] ==================================================================