Date
July 9, 2025, 11:07 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.580036] ================================================================== [ 16.580654] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.580965] Write of size 121 at addr ffff8881031fd400 by task kunit_try_catch/302 [ 16.581320] [ 16.581464] CPU: 0 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 16.581513] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.581526] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.581564] Call Trace: [ 16.581579] <TASK> [ 16.581599] dump_stack_lvl+0x73/0xb0 [ 16.581634] print_report+0xd1/0x650 [ 16.581669] ? __virt_addr_valid+0x1db/0x2d0 [ 16.581695] ? _copy_from_user+0x32/0x90 [ 16.581734] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.581760] ? _copy_from_user+0x32/0x90 [ 16.581781] kasan_report+0x141/0x180 [ 16.581804] ? _copy_from_user+0x32/0x90 [ 16.581829] kasan_check_range+0x10c/0x1c0 [ 16.581864] __kasan_check_write+0x18/0x20 [ 16.581885] _copy_from_user+0x32/0x90 [ 16.581906] copy_user_test_oob+0x2be/0x10f0 [ 16.581945] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.581970] ? finish_task_switch.isra.0+0x153/0x700 [ 16.581995] ? __switch_to+0x47/0xf50 [ 16.582022] ? __schedule+0x10cc/0x2b60 [ 16.582067] ? __pfx_read_tsc+0x10/0x10 [ 16.582091] ? ktime_get_ts64+0x86/0x230 [ 16.582117] kunit_try_run_case+0x1a5/0x480 [ 16.582143] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.582167] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.582192] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.582217] ? __kthread_parkme+0x82/0x180 [ 16.582240] ? preempt_count_sub+0x50/0x80 [ 16.582265] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.582300] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.582327] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.582364] kthread+0x337/0x6f0 [ 16.582383] ? trace_preempt_on+0x20/0xc0 [ 16.582409] ? __pfx_kthread+0x10/0x10 [ 16.582431] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.582455] ? calculate_sigpending+0x7b/0xa0 [ 16.582482] ? __pfx_kthread+0x10/0x10 [ 16.582504] ret_from_fork+0x116/0x1d0 [ 16.582524] ? __pfx_kthread+0x10/0x10 [ 16.582546] ret_from_fork_asm+0x1a/0x30 [ 16.582578] </TASK> [ 16.582591] [ 16.590840] Allocated by task 302: [ 16.590978] kasan_save_stack+0x45/0x70 [ 16.591350] kasan_save_track+0x18/0x40 [ 16.591558] kasan_save_alloc_info+0x3b/0x50 [ 16.591774] __kasan_kmalloc+0xb7/0xc0 [ 16.591942] __kmalloc_noprof+0x1c9/0x500 [ 16.592273] kunit_kmalloc_array+0x25/0x60 [ 16.592473] copy_user_test_oob+0xab/0x10f0 [ 16.592635] kunit_try_run_case+0x1a5/0x480 [ 16.592792] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.592969] kthread+0x337/0x6f0 [ 16.593102] ret_from_fork+0x116/0x1d0 [ 16.593423] ret_from_fork_asm+0x1a/0x30 [ 16.593733] [ 16.593830] The buggy address belongs to the object at ffff8881031fd400 [ 16.593830] which belongs to the cache kmalloc-128 of size 128 [ 16.594468] The buggy address is located 0 bytes inside of [ 16.594468] allocated 120-byte region [ffff8881031fd400, ffff8881031fd478) [ 16.594977] [ 16.595133] The buggy address belongs to the physical page: [ 16.595320] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1031fd [ 16.595640] flags: 0x200000000000000(node=0|zone=2) [ 16.595898] page_type: f5(slab) [ 16.596096] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.596413] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.596737] page dumped because: kasan: bad access detected [ 16.596957] [ 16.597077] Memory state around the buggy address: [ 16.597279] ffff8881031fd300: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.597546] ffff8881031fd380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.597773] >ffff8881031fd400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.597987] ^ [ 16.598198] ffff8881031fd480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.598445] ffff8881031fd500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.598775] ==================================================================