Date
July 8, 2025, 11:09 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.469279] ================================================================== [ 16.469657] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 16.469956] Read of size 121 at addr ffff888102675c00 by task kunit_try_catch/303 [ 16.470264] [ 16.470393] CPU: 1 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 16.470440] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.470453] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.470475] Call Trace: [ 16.470494] <TASK> [ 16.470521] dump_stack_lvl+0x73/0xb0 [ 16.470552] print_report+0xd1/0x650 [ 16.470577] ? __virt_addr_valid+0x1db/0x2d0 [ 16.470613] ? _copy_to_user+0x3c/0x70 [ 16.470633] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.470660] ? _copy_to_user+0x3c/0x70 [ 16.470680] kasan_report+0x141/0x180 [ 16.470703] ? _copy_to_user+0x3c/0x70 [ 16.470728] kasan_check_range+0x10c/0x1c0 [ 16.470753] __kasan_check_read+0x15/0x20 [ 16.470774] _copy_to_user+0x3c/0x70 [ 16.470794] copy_user_test_oob+0x364/0x10f0 [ 16.470822] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.470846] ? finish_task_switch.isra.0+0x153/0x700 [ 16.470872] ? __switch_to+0x47/0xf50 [ 16.470899] ? __schedule+0x10cc/0x2b60 [ 16.470923] ? __pfx_read_tsc+0x10/0x10 [ 16.470946] ? ktime_get_ts64+0x86/0x230 [ 16.470973] kunit_try_run_case+0x1a5/0x480 [ 16.470998] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.471022] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.471048] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.471073] ? __kthread_parkme+0x82/0x180 [ 16.471095] ? preempt_count_sub+0x50/0x80 [ 16.471120] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.471146] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.471172] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.471198] kthread+0x337/0x6f0 [ 16.471218] ? trace_preempt_on+0x20/0xc0 [ 16.471244] ? __pfx_kthread+0x10/0x10 [ 16.471265] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.471288] ? calculate_sigpending+0x7b/0xa0 [ 16.471313] ? __pfx_kthread+0x10/0x10 [ 16.471336] ret_from_fork+0x116/0x1d0 [ 16.471355] ? __pfx_kthread+0x10/0x10 [ 16.471377] ret_from_fork_asm+0x1a/0x30 [ 16.471410] </TASK> [ 16.471420] [ 16.478496] Allocated by task 303: [ 16.478633] kasan_save_stack+0x45/0x70 [ 16.478816] kasan_save_track+0x18/0x40 [ 16.479016] kasan_save_alloc_info+0x3b/0x50 [ 16.479227] __kasan_kmalloc+0xb7/0xc0 [ 16.479415] __kmalloc_noprof+0x1c9/0x500 [ 16.479618] kunit_kmalloc_array+0x25/0x60 [ 16.480013] copy_user_test_oob+0xab/0x10f0 [ 16.480166] kunit_try_run_case+0x1a5/0x480 [ 16.480313] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.480488] kthread+0x337/0x6f0 [ 16.480684] ret_from_fork+0x116/0x1d0 [ 16.480876] ret_from_fork_asm+0x1a/0x30 [ 16.481076] [ 16.481174] The buggy address belongs to the object at ffff888102675c00 [ 16.481174] which belongs to the cache kmalloc-128 of size 128 [ 16.481702] The buggy address is located 0 bytes inside of [ 16.481702] allocated 120-byte region [ffff888102675c00, ffff888102675c78) [ 16.482065] [ 16.482142] The buggy address belongs to the physical page: [ 16.482342] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102675 [ 16.482778] flags: 0x200000000000000(node=0|zone=2) [ 16.483019] page_type: f5(slab) [ 16.483189] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.483759] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.484042] page dumped because: kasan: bad access detected [ 16.484211] [ 16.484279] Memory state around the buggy address: [ 16.484433] ffff888102675b00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.484971] ffff888102675b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.485297] >ffff888102675c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.485581] ^ [ 16.485932] ffff888102675c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.486224] ffff888102675d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.486510] ==================================================================