Date
July 3, 2025, 3:13 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.136734] ================================================================== [ 15.137778] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 15.138112] Write of size 121 at addr ffff888103151e00 by task kunit_try_catch/305 [ 15.138384] [ 15.138511] CPU: 0 UID: 0 PID: 305 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT(voluntary) [ 15.138566] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.138580] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.138607] Call Trace: [ 15.138622] <TASK> [ 15.138646] dump_stack_lvl+0x73/0xb0 [ 15.138678] print_report+0xd1/0x650 [ 15.138705] ? __virt_addr_valid+0x1db/0x2d0 [ 15.138731] ? _copy_from_user+0x32/0x90 [ 15.138752] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.138776] ? _copy_from_user+0x32/0x90 [ 15.138797] kasan_report+0x141/0x180 [ 15.138821] ? _copy_from_user+0x32/0x90 [ 15.138846] kasan_check_range+0x10c/0x1c0 [ 15.138868] __kasan_check_write+0x18/0x20 [ 15.138889] _copy_from_user+0x32/0x90 [ 15.138910] copy_user_test_oob+0x2be/0x10f0 [ 15.138935] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.138955] ? finish_task_switch.isra.0+0x153/0x700 [ 15.138982] ? __switch_to+0x5d9/0xf60 [ 15.139006] ? dequeue_task_fair+0x166/0x4e0 [ 15.139032] ? __schedule+0x10cc/0x2b60 [ 15.139057] ? __pfx_read_tsc+0x10/0x10 [ 15.139078] ? ktime_get_ts64+0x86/0x230 [ 15.139105] kunit_try_run_case+0x1a5/0x480 [ 15.139131] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.139154] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.139180] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.139205] ? __kthread_parkme+0x82/0x180 [ 15.139242] ? preempt_count_sub+0x50/0x80 [ 15.139268] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.139294] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.139319] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.139343] kthread+0x337/0x6f0 [ 15.139362] ? trace_preempt_on+0x20/0xc0 [ 15.139387] ? __pfx_kthread+0x10/0x10 [ 15.139407] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.139430] ? calculate_sigpending+0x7b/0xa0 [ 15.139453] ? __pfx_kthread+0x10/0x10 [ 15.139473] ret_from_fork+0x41/0x80 [ 15.139495] ? __pfx_kthread+0x10/0x10 [ 15.139514] ret_from_fork_asm+0x1a/0x30 [ 15.139547] </TASK> [ 15.139560] [ 15.149207] Allocated by task 305: [ 15.149431] kasan_save_stack+0x45/0x70 [ 15.149633] kasan_save_track+0x18/0x40 [ 15.150061] kasan_save_alloc_info+0x3b/0x50 [ 15.150279] __kasan_kmalloc+0xb7/0xc0 [ 15.150581] __kmalloc_noprof+0x1c9/0x500 [ 15.150766] kunit_kmalloc_array+0x25/0x60 [ 15.151082] copy_user_test_oob+0xab/0x10f0 [ 15.151271] kunit_try_run_case+0x1a5/0x480 [ 15.151593] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.151904] kthread+0x337/0x6f0 [ 15.152059] ret_from_fork+0x41/0x80 [ 15.152236] ret_from_fork_asm+0x1a/0x30 [ 15.152424] [ 15.152522] The buggy address belongs to the object at ffff888103151e00 [ 15.152522] which belongs to the cache kmalloc-128 of size 128 [ 15.153287] The buggy address is located 0 bytes inside of [ 15.153287] allocated 120-byte region [ffff888103151e00, ffff888103151e78) [ 15.153998] [ 15.154238] The buggy address belongs to the physical page: [ 15.154504] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103151 [ 15.154925] flags: 0x200000000000000(node=0|zone=2) [ 15.155273] page_type: f5(slab) [ 15.155414] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.155853] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.156174] page dumped because: kasan: bad access detected [ 15.156431] [ 15.156512] Memory state around the buggy address: [ 15.156720] ffff888103151d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.157015] ffff888103151d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.157319] >ffff888103151e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.157625] ^ [ 15.158311] ffff888103151e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.158729] ffff888103151f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.159070] ==================================================================