Date
July 3, 2025, 3:13 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.162851] ================================================================== [ 15.163192] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x4a/0x70 [ 15.163515] Read of size 121 at addr ffff888103151e00 by task kunit_try_catch/305 [ 15.163925] [ 15.164030] CPU: 0 UID: 0 PID: 305 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT(voluntary) [ 15.164080] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.164094] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.164117] Call Trace: [ 15.164137] <TASK> [ 15.164160] dump_stack_lvl+0x73/0xb0 [ 15.164213] print_report+0xd1/0x650 [ 15.164251] ? __virt_addr_valid+0x1db/0x2d0 [ 15.164294] ? _copy_to_user+0x4a/0x70 [ 15.164316] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.164340] ? _copy_to_user+0x4a/0x70 [ 15.164361] kasan_report+0x141/0x180 [ 15.164385] ? _copy_to_user+0x4a/0x70 [ 15.164410] kasan_check_range+0x10c/0x1c0 [ 15.164432] __kasan_check_read+0x15/0x20 [ 15.164453] _copy_to_user+0x4a/0x70 [ 15.164474] copy_user_test_oob+0x364/0x10f0 [ 15.164498] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.164519] ? finish_task_switch.isra.0+0x153/0x700 [ 15.164544] ? __switch_to+0x5d9/0xf60 [ 15.164567] ? dequeue_task_fair+0x166/0x4e0 [ 15.164592] ? __schedule+0x10cc/0x2b60 [ 15.164617] ? __pfx_read_tsc+0x10/0x10 [ 15.164639] ? ktime_get_ts64+0x86/0x230 [ 15.164665] kunit_try_run_case+0x1a5/0x480 [ 15.164691] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.164714] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.164740] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.164766] ? __kthread_parkme+0x82/0x180 [ 15.164789] ? preempt_count_sub+0x50/0x80 [ 15.164814] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.164839] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.164864] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.164889] kthread+0x337/0x6f0 [ 15.164907] ? trace_preempt_on+0x20/0xc0 [ 15.164932] ? __pfx_kthread+0x10/0x10 [ 15.164951] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.164974] ? calculate_sigpending+0x7b/0xa0 [ 15.164997] ? __pfx_kthread+0x10/0x10 [ 15.165018] ret_from_fork+0x41/0x80 [ 15.165039] ? __pfx_kthread+0x10/0x10 [ 15.165057] ret_from_fork_asm+0x1a/0x30 [ 15.165090] </TASK> [ 15.165101] [ 15.175967] Allocated by task 305: [ 15.176123] kasan_save_stack+0x45/0x70 [ 15.176337] kasan_save_track+0x18/0x40 [ 15.176517] kasan_save_alloc_info+0x3b/0x50 [ 15.177005] __kasan_kmalloc+0xb7/0xc0 [ 15.177184] __kmalloc_noprof+0x1c9/0x500 [ 15.177614] kunit_kmalloc_array+0x25/0x60 [ 15.177936] copy_user_test_oob+0xab/0x10f0 [ 15.178221] kunit_try_run_case+0x1a5/0x480 [ 15.178521] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.178874] kthread+0x337/0x6f0 [ 15.179131] ret_from_fork+0x41/0x80 [ 15.179422] ret_from_fork_asm+0x1a/0x30 [ 15.179696] [ 15.179958] The buggy address belongs to the object at ffff888103151e00 [ 15.179958] which belongs to the cache kmalloc-128 of size 128 [ 15.180568] The buggy address is located 0 bytes inside of [ 15.180568] allocated 120-byte region [ffff888103151e00, ffff888103151e78) [ 15.181243] [ 15.181357] The buggy address belongs to the physical page: [ 15.181589] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103151 [ 15.181911] flags: 0x200000000000000(node=0|zone=2) [ 15.182175] page_type: f5(slab) [ 15.182371] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.182733] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.182962] page dumped because: kasan: bad access detected [ 15.183201] [ 15.183307] Memory state around the buggy address: [ 15.183542] ffff888103151d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.183847] ffff888103151d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.184151] >ffff888103151e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.184446] ^ [ 15.184830] ffff888103151e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.185050] ffff888103151f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.185379] ==================================================================