Date
July 9, 2025, 11:07 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.602460] ================================================================== [ 16.602794] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 16.603118] Read of size 121 at addr ffff8881031fd400 by task kunit_try_catch/302 [ 16.603441] [ 16.603556] CPU: 0 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 16.603611] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.603624] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.603646] Call Trace: [ 16.603660] <TASK> [ 16.603686] dump_stack_lvl+0x73/0xb0 [ 16.603727] print_report+0xd1/0x650 [ 16.603750] ? __virt_addr_valid+0x1db/0x2d0 [ 16.603774] ? _copy_to_user+0x3c/0x70 [ 16.603803] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.603828] ? _copy_to_user+0x3c/0x70 [ 16.603849] kasan_report+0x141/0x180 [ 16.603881] ? _copy_to_user+0x3c/0x70 [ 16.603906] kasan_check_range+0x10c/0x1c0 [ 16.603931] __kasan_check_read+0x15/0x20 [ 16.603952] _copy_to_user+0x3c/0x70 [ 16.603973] copy_user_test_oob+0x364/0x10f0 [ 16.604000] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.604024] ? finish_task_switch.isra.0+0x153/0x700 [ 16.604059] ? __switch_to+0x47/0xf50 [ 16.604086] ? __schedule+0x10cc/0x2b60 [ 16.604109] ? __pfx_read_tsc+0x10/0x10 [ 16.604132] ? ktime_get_ts64+0x86/0x230 [ 16.604166] kunit_try_run_case+0x1a5/0x480 [ 16.604191] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.604216] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.604252] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.604278] ? __kthread_parkme+0x82/0x180 [ 16.604300] ? preempt_count_sub+0x50/0x80 [ 16.604331] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.604357] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.604392] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.604419] kthread+0x337/0x6f0 [ 16.604450] ? trace_preempt_on+0x20/0xc0 [ 16.604475] ? __pfx_kthread+0x10/0x10 [ 16.604496] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.604519] ? calculate_sigpending+0x7b/0xa0 [ 16.604544] ? __pfx_kthread+0x10/0x10 [ 16.604567] ret_from_fork+0x116/0x1d0 [ 16.604587] ? __pfx_kthread+0x10/0x10 [ 16.604609] ret_from_fork_asm+0x1a/0x30 [ 16.604641] </TASK> [ 16.604651] [ 16.612365] Allocated by task 302: [ 16.612543] kasan_save_stack+0x45/0x70 [ 16.612751] kasan_save_track+0x18/0x40 [ 16.612939] kasan_save_alloc_info+0x3b/0x50 [ 16.613289] __kasan_kmalloc+0xb7/0xc0 [ 16.613458] __kmalloc_noprof+0x1c9/0x500 [ 16.613599] kunit_kmalloc_array+0x25/0x60 [ 16.613788] copy_user_test_oob+0xab/0x10f0 [ 16.613997] kunit_try_run_case+0x1a5/0x480 [ 16.614321] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.614563] kthread+0x337/0x6f0 [ 16.614757] ret_from_fork+0x116/0x1d0 [ 16.614941] ret_from_fork_asm+0x1a/0x30 [ 16.615162] [ 16.615268] The buggy address belongs to the object at ffff8881031fd400 [ 16.615268] which belongs to the cache kmalloc-128 of size 128 [ 16.615788] The buggy address is located 0 bytes inside of [ 16.615788] allocated 120-byte region [ffff8881031fd400, ffff8881031fd478) [ 16.616427] [ 16.616516] The buggy address belongs to the physical page: [ 16.616800] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1031fd [ 16.617158] flags: 0x200000000000000(node=0|zone=2) [ 16.617323] page_type: f5(slab) [ 16.617445] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.617676] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.618021] page dumped because: kasan: bad access detected [ 16.618350] [ 16.618455] Memory state around the buggy address: [ 16.618669] ffff8881031fd300: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.618899] ffff8881031fd380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.619113] >ffff8881031fd400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.619818] ^ [ 16.620229] ffff8881031fd480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.620512] ffff8881031fd500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.620808] ==================================================================