Date
July 8, 2025, 7:07 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 17.253460] ================================================================== [ 17.254063] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 17.254654] Write of size 121 at addr ffff888102629100 by task kunit_try_catch/302 [ 17.255239] [ 17.255353] CPU: 1 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 17.255572] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.255589] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 17.255615] Call Trace: [ 17.255630] <TASK> [ 17.255650] dump_stack_lvl+0x73/0xb0 [ 17.255683] print_report+0xd1/0x650 [ 17.255709] ? __virt_addr_valid+0x1db/0x2d0 [ 17.255734] ? _copy_from_user+0x32/0x90 [ 17.255754] ? kasan_complete_mode_report_info+0x2a/0x200 [ 17.255782] ? _copy_from_user+0x32/0x90 [ 17.255803] kasan_report+0x141/0x180 [ 17.255824] ? _copy_from_user+0x32/0x90 [ 17.255849] kasan_check_range+0x10c/0x1c0 [ 17.255874] __kasan_check_write+0x18/0x20 [ 17.255893] _copy_from_user+0x32/0x90 [ 17.255915] copy_user_test_oob+0x2be/0x10f0 [ 17.255942] ? __pfx_copy_user_test_oob+0x10/0x10 [ 17.255965] ? finish_task_switch.isra.0+0x153/0x700 [ 17.255989] ? __switch_to+0x47/0xf50 [ 17.256017] ? __schedule+0x10cc/0x2b60 [ 17.256051] ? __pfx_read_tsc+0x10/0x10 [ 17.256074] ? ktime_get_ts64+0x86/0x230 [ 17.256100] kunit_try_run_case+0x1a5/0x480 [ 17.256124] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.256146] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 17.256172] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 17.256196] ? __kthread_parkme+0x82/0x180 [ 17.256218] ? preempt_count_sub+0x50/0x80 [ 17.256242] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.256267] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.256291] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 17.256315] kthread+0x337/0x6f0 [ 17.256334] ? trace_preempt_on+0x20/0xc0 [ 17.256358] ? __pfx_kthread+0x10/0x10 [ 17.256380] ? _raw_spin_unlock_irq+0x47/0x80 [ 17.256401] ? calculate_sigpending+0x7b/0xa0 [ 17.256427] ? __pfx_kthread+0x10/0x10 [ 17.256449] ret_from_fork+0x116/0x1d0 [ 17.256469] ? __pfx_kthread+0x10/0x10 [ 17.256490] ret_from_fork_asm+0x1a/0x30 [ 17.256523] </TASK> [ 17.256537] [ 17.267027] Allocated by task 302: [ 17.267252] kasan_save_stack+0x45/0x70 [ 17.267511] kasan_save_track+0x18/0x40 [ 17.267700] kasan_save_alloc_info+0x3b/0x50 [ 17.267903] __kasan_kmalloc+0xb7/0xc0 [ 17.268087] __kmalloc_noprof+0x1c9/0x500 [ 17.268282] kunit_kmalloc_array+0x25/0x60 [ 17.268471] copy_user_test_oob+0xab/0x10f0 [ 17.269216] kunit_try_run_case+0x1a5/0x480 [ 17.269385] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.269901] kthread+0x337/0x6f0 [ 17.270216] ret_from_fork+0x116/0x1d0 [ 17.270370] ret_from_fork_asm+0x1a/0x30 [ 17.270614] [ 17.270747] The buggy address belongs to the object at ffff888102629100 [ 17.270747] which belongs to the cache kmalloc-128 of size 128 [ 17.271638] The buggy address is located 0 bytes inside of [ 17.271638] allocated 120-byte region [ffff888102629100, ffff888102629178) [ 17.272183] [ 17.272295] The buggy address belongs to the physical page: [ 17.272538] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102629 [ 17.273240] flags: 0x200000000000000(node=0|zone=2) [ 17.273461] page_type: f5(slab) [ 17.273844] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 17.274166] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 17.274671] page dumped because: kasan: bad access detected [ 17.275012] [ 17.275136] Memory state around the buggy address: [ 17.275361] ffff888102629000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.275916] ffff888102629080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.276228] >ffff888102629100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 17.276731] ^ [ 17.277170] ffff888102629180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.277607] ffff888102629200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.278057] ==================================================================