Date
July 1, 2025, 12:10 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.330706] ================================================================== [ 15.331023] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 15.331397] Read of size 121 at addr ffff888103917500 by task kunit_try_catch/302 [ 15.331752] [ 15.331848] CPU: 1 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 15.331892] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.331905] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.331928] Call Trace: [ 15.331945] <TASK> [ 15.331960] dump_stack_lvl+0x73/0xb0 [ 15.331997] print_report+0xd1/0x650 [ 15.332021] ? __virt_addr_valid+0x1db/0x2d0 [ 15.332062] ? _copy_to_user+0x3c/0x70 [ 15.332081] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.332104] ? _copy_to_user+0x3c/0x70 [ 15.332124] kasan_report+0x141/0x180 [ 15.332147] ? _copy_to_user+0x3c/0x70 [ 15.332171] kasan_check_range+0x10c/0x1c0 [ 15.332195] __kasan_check_read+0x15/0x20 [ 15.332214] _copy_to_user+0x3c/0x70 [ 15.332234] copy_user_test_oob+0x364/0x10f0 [ 15.332259] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.332302] ? finish_task_switch.isra.0+0x153/0x700 [ 15.332325] ? __switch_to+0x47/0xf50 [ 15.332361] ? __schedule+0x10cc/0x2b60 [ 15.332384] ? __pfx_read_tsc+0x10/0x10 [ 15.332406] ? ktime_get_ts64+0x86/0x230 [ 15.332430] kunit_try_run_case+0x1a5/0x480 [ 15.332454] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.332477] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.332501] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.332524] ? __kthread_parkme+0x82/0x180 [ 15.332545] ? preempt_count_sub+0x50/0x80 [ 15.332569] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.332593] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.332617] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.332641] kthread+0x337/0x6f0 [ 15.332660] ? trace_preempt_on+0x20/0xc0 [ 15.332683] ? __pfx_kthread+0x10/0x10 [ 15.332704] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.332726] ? calculate_sigpending+0x7b/0xa0 [ 15.332750] ? __pfx_kthread+0x10/0x10 [ 15.332772] ret_from_fork+0x116/0x1d0 [ 15.332791] ? __pfx_kthread+0x10/0x10 [ 15.332812] ret_from_fork_asm+0x1a/0x30 [ 15.332843] </TASK> [ 15.332854] [ 15.340341] Allocated by task 302: [ 15.340543] kasan_save_stack+0x45/0x70 [ 15.340822] kasan_save_track+0x18/0x40 [ 15.341021] kasan_save_alloc_info+0x3b/0x50 [ 15.341293] __kasan_kmalloc+0xb7/0xc0 [ 15.341477] __kmalloc_noprof+0x1c9/0x500 [ 15.341630] kunit_kmalloc_array+0x25/0x60 [ 15.341838] copy_user_test_oob+0xab/0x10f0 [ 15.342054] kunit_try_run_case+0x1a5/0x480 [ 15.342290] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.342541] kthread+0x337/0x6f0 [ 15.342704] ret_from_fork+0x116/0x1d0 [ 15.342895] ret_from_fork_asm+0x1a/0x30 [ 15.343108] [ 15.343210] The buggy address belongs to the object at ffff888103917500 [ 15.343210] which belongs to the cache kmalloc-128 of size 128 [ 15.343758] The buggy address is located 0 bytes inside of [ 15.343758] allocated 120-byte region [ffff888103917500, ffff888103917578) [ 15.344153] [ 15.344227] The buggy address belongs to the physical page: [ 15.344403] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103917 [ 15.344815] flags: 0x200000000000000(node=0|zone=2) [ 15.345060] page_type: f5(slab) [ 15.345224] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.345794] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.346021] page dumped because: kasan: bad access detected [ 15.346204] [ 15.346297] Memory state around the buggy address: [ 15.346675] ffff888103917400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.347025] ffff888103917480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.347404] >ffff888103917500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.347670] ^ [ 15.348013] ffff888103917580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.348337] ffff888103917600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.348652] ==================================================================