Date
July 5, 2025, 11:09 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 18.392958] ================================================================== [ 18.393355] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 18.393731] Read of size 121 at addr ffff888103332c00 by task kunit_try_catch/303 [ 18.394118] [ 18.394235] CPU: 1 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 18.394293] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.394312] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 18.394340] Call Trace: [ 18.394366] <TASK> [ 18.394391] dump_stack_lvl+0x73/0xb0 [ 18.394435] print_report+0xd1/0x650 [ 18.394466] ? __virt_addr_valid+0x1db/0x2d0 [ 18.394496] ? _copy_to_user+0x3c/0x70 [ 18.394521] ? kasan_complete_mode_report_info+0x2a/0x200 [ 18.394549] ? _copy_to_user+0x3c/0x70 [ 18.394573] kasan_report+0x141/0x180 [ 18.394601] ? _copy_to_user+0x3c/0x70 [ 18.394632] kasan_check_range+0x10c/0x1c0 [ 18.394676] __kasan_check_read+0x15/0x20 [ 18.394701] _copy_to_user+0x3c/0x70 [ 18.394727] copy_user_test_oob+0x364/0x10f0 [ 18.394760] ? __pfx_copy_user_test_oob+0x10/0x10 [ 18.394801] ? finish_task_switch.isra.0+0x153/0x700 [ 18.394830] ? __switch_to+0x47/0xf50 [ 18.394862] ? __schedule+0x10cc/0x2b60 [ 18.394890] ? __pfx_read_tsc+0x10/0x10 [ 18.394917] ? ktime_get_ts64+0x86/0x230 [ 18.394947] kunit_try_run_case+0x1a5/0x480 [ 18.394977] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.395005] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 18.395035] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 18.395063] ? __kthread_parkme+0x82/0x180 [ 18.395089] ? preempt_count_sub+0x50/0x80 [ 18.395118] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.395148] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.395177] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 18.395207] kthread+0x337/0x6f0 [ 18.395232] ? trace_preempt_on+0x20/0xc0 [ 18.395262] ? __pfx_kthread+0x10/0x10 [ 18.395288] ? _raw_spin_unlock_irq+0x47/0x80 [ 18.395315] ? calculate_sigpending+0x7b/0xa0 [ 18.395345] ? __pfx_kthread+0x10/0x10 [ 18.395373] ret_from_fork+0x116/0x1d0 [ 18.395398] ? __pfx_kthread+0x10/0x10 [ 18.395424] ret_from_fork_asm+0x1a/0x30 [ 18.395465] </TASK> [ 18.395480] [ 18.410466] Allocated by task 303: [ 18.410948] kasan_save_stack+0x45/0x70 [ 18.411149] kasan_save_track+0x18/0x40 [ 18.411317] kasan_save_alloc_info+0x3b/0x50 [ 18.411499] __kasan_kmalloc+0xb7/0xc0 [ 18.411676] __kmalloc_noprof+0x1c9/0x500 [ 18.411973] kunit_kmalloc_array+0x25/0x60 [ 18.412271] copy_user_test_oob+0xab/0x10f0 [ 18.412516] kunit_try_run_case+0x1a5/0x480 [ 18.412850] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.413162] kthread+0x337/0x6f0 [ 18.413329] ret_from_fork+0x116/0x1d0 [ 18.413564] ret_from_fork_asm+0x1a/0x30 [ 18.413782] [ 18.413905] The buggy address belongs to the object at ffff888103332c00 [ 18.413905] which belongs to the cache kmalloc-128 of size 128 [ 18.414538] The buggy address is located 0 bytes inside of [ 18.414538] allocated 120-byte region [ffff888103332c00, ffff888103332c78) [ 18.415172] [ 18.415297] The buggy address belongs to the physical page: [ 18.415614] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103332 [ 18.415986] flags: 0x200000000000000(node=0|zone=2) [ 18.416226] page_type: f5(slab) [ 18.416460] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 18.416944] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 18.417271] page dumped because: kasan: bad access detected [ 18.417567] [ 18.417715] Memory state around the buggy address: [ 18.417944] ffff888103332b00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.418342] ffff888103332b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.418620] >ffff888103332c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 18.418988] ^ [ 18.419392] ffff888103332c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.419815] ffff888103332d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.420119] ==================================================================