Date
July 2, 2025, 11:09 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.366211] ================================================================== [ 15.367735] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 15.368522] Write of size 121 at addr ffff888102c8ba00 by task kunit_try_catch/304 [ 15.369420] [ 15.369532] CPU: 1 UID: 0 PID: 304 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 15.369597] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.369612] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.369637] Call Trace: [ 15.369653] <TASK> [ 15.369676] dump_stack_lvl+0x73/0xb0 [ 15.369713] print_report+0xd1/0x650 [ 15.369741] ? __virt_addr_valid+0x1db/0x2d0 [ 15.369768] ? _copy_from_user+0x32/0x90 [ 15.369787] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.369812] ? _copy_from_user+0x32/0x90 [ 15.369831] kasan_report+0x141/0x180 [ 15.369855] ? _copy_from_user+0x32/0x90 [ 15.369879] kasan_check_range+0x10c/0x1c0 [ 15.369904] __kasan_check_write+0x18/0x20 [ 15.369924] _copy_from_user+0x32/0x90 [ 15.369946] copy_user_test_oob+0x2be/0x10f0 [ 15.369972] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.369995] ? finish_task_switch.isra.0+0x153/0x700 [ 15.370020] ? __switch_to+0x47/0xf50 [ 15.370049] ? __schedule+0x10cc/0x2b60 [ 15.370073] ? __pfx_read_tsc+0x10/0x10 [ 15.370096] ? ktime_get_ts64+0x86/0x230 [ 15.370122] kunit_try_run_case+0x1a5/0x480 [ 15.370147] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.370170] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.370195] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.370218] ? __kthread_parkme+0x82/0x180 [ 15.370242] ? preempt_count_sub+0x50/0x80 [ 15.370266] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.370291] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.370315] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.370338] kthread+0x337/0x6f0 [ 15.370371] ? trace_preempt_on+0x20/0xc0 [ 15.370397] ? __pfx_kthread+0x10/0x10 [ 15.370419] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.370441] ? calculate_sigpending+0x7b/0xa0 [ 15.370467] ? __pfx_kthread+0x10/0x10 [ 15.370490] ret_from_fork+0x116/0x1d0 [ 15.370509] ? __pfx_kthread+0x10/0x10 [ 15.370531] ret_from_fork_asm+0x1a/0x30 [ 15.370564] </TASK> [ 15.370578] [ 15.385787] Allocated by task 304: [ 15.386183] kasan_save_stack+0x45/0x70 [ 15.386590] kasan_save_track+0x18/0x40 [ 15.387002] kasan_save_alloc_info+0x3b/0x50 [ 15.387177] __kasan_kmalloc+0xb7/0xc0 [ 15.387520] __kmalloc_noprof+0x1c9/0x500 [ 15.387968] kunit_kmalloc_array+0x25/0x60 [ 15.388412] copy_user_test_oob+0xab/0x10f0 [ 15.388695] kunit_try_run_case+0x1a5/0x480 [ 15.389139] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.389492] kthread+0x337/0x6f0 [ 15.389647] ret_from_fork+0x116/0x1d0 [ 15.389989] ret_from_fork_asm+0x1a/0x30 [ 15.390526] [ 15.390640] The buggy address belongs to the object at ffff888102c8ba00 [ 15.390640] which belongs to the cache kmalloc-128 of size 128 [ 15.391594] The buggy address is located 0 bytes inside of [ 15.391594] allocated 120-byte region [ffff888102c8ba00, ffff888102c8ba78) [ 15.392624] [ 15.392806] The buggy address belongs to the physical page: [ 15.393313] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c8b [ 15.393962] flags: 0x200000000000000(node=0|zone=2) [ 15.394223] page_type: f5(slab) [ 15.394564] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.395179] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.395780] page dumped because: kasan: bad access detected [ 15.396259] [ 15.396337] Memory state around the buggy address: [ 15.396655] ffff888102c8b900: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.397367] ffff888102c8b980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.397968] >ffff888102c8ba00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.398637] ^ [ 15.398927] ffff888102c8ba80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.399402] ffff888102c8bb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.399656] ==================================================================