Date
July 19, 2025, 11:12 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.959615] ================================================================== [ 15.960284] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 15.960820] Write of size 121 at addr ffff888102fd1e00 by task kunit_try_catch/303 [ 15.961446] [ 15.961733] CPU: 0 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 15.961791] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.961806] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.961830] Call Trace: [ 15.961843] <TASK> [ 15.961873] dump_stack_lvl+0x73/0xb0 [ 15.961909] print_report+0xd1/0x610 [ 15.961933] ? __virt_addr_valid+0x1db/0x2d0 [ 15.961957] ? _copy_from_user+0x32/0x90 [ 15.961977] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.962002] ? _copy_from_user+0x32/0x90 [ 15.962032] kasan_report+0x141/0x180 [ 15.962055] ? _copy_from_user+0x32/0x90 [ 15.962079] kasan_check_range+0x10c/0x1c0 [ 15.962102] __kasan_check_write+0x18/0x20 [ 15.962121] _copy_from_user+0x32/0x90 [ 15.962142] copy_user_test_oob+0x2be/0x10f0 [ 15.962169] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.962193] ? finish_task_switch.isra.0+0x153/0x700 [ 15.962216] ? __switch_to+0x47/0xf50 [ 15.962243] ? __schedule+0x10cc/0x2b60 [ 15.962266] ? __pfx_read_tsc+0x10/0x10 [ 15.962289] ? ktime_get_ts64+0x86/0x230 [ 15.962314] kunit_try_run_case+0x1a5/0x480 [ 15.962339] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.962362] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.962387] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.962411] ? __kthread_parkme+0x82/0x180 [ 15.962433] ? preempt_count_sub+0x50/0x80 [ 15.962456] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.962481] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.962504] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.962528] kthread+0x337/0x6f0 [ 15.962548] ? trace_preempt_on+0x20/0xc0 [ 15.962572] ? __pfx_kthread+0x10/0x10 [ 15.962593] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.962614] ? calculate_sigpending+0x7b/0xa0 [ 15.962640] ? __pfx_kthread+0x10/0x10 [ 15.962661] ret_from_fork+0x116/0x1d0 [ 15.962681] ? __pfx_kthread+0x10/0x10 [ 15.962702] ret_from_fork_asm+0x1a/0x30 [ 15.962733] </TASK> [ 15.962745] [ 15.974261] Allocated by task 303: [ 15.974481] kasan_save_stack+0x45/0x70 [ 15.974655] kasan_save_track+0x18/0x40 [ 15.974794] kasan_save_alloc_info+0x3b/0x50 [ 15.974985] __kasan_kmalloc+0xb7/0xc0 [ 15.975186] __kmalloc_noprof+0x1c9/0x500 [ 15.975361] kunit_kmalloc_array+0x25/0x60 [ 15.975587] copy_user_test_oob+0xab/0x10f0 [ 15.975774] kunit_try_run_case+0x1a5/0x480 [ 15.975921] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.976159] kthread+0x337/0x6f0 [ 15.976334] ret_from_fork+0x116/0x1d0 [ 15.976520] ret_from_fork_asm+0x1a/0x30 [ 15.976716] [ 15.976790] The buggy address belongs to the object at ffff888102fd1e00 [ 15.976790] which belongs to the cache kmalloc-128 of size 128 [ 15.977509] The buggy address is located 0 bytes inside of [ 15.977509] allocated 120-byte region [ffff888102fd1e00, ffff888102fd1e78) [ 15.977982] [ 15.978078] The buggy address belongs to the physical page: [ 15.978325] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102fd1 [ 15.978637] flags: 0x200000000000000(node=0|zone=2) [ 15.978858] page_type: f5(slab) [ 15.979018] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.979288] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.979517] page dumped because: kasan: bad access detected [ 15.979689] [ 15.979783] Memory state around the buggy address: [ 15.980042] ffff888102fd1d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.980359] ffff888102fd1d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.980712] >ffff888102fd1e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.980980] ^ [ 15.981205] ffff888102fd1e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.981676] ffff888102fd1f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.982012] ==================================================================