Date
July 5, 2025, 5:09 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.576887] ================================================================== [ 15.577583] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 15.577973] Write of size 121 at addr ffff8881031c1900 by task kunit_try_catch/304 [ 15.578301] [ 15.578438] CPU: 0 UID: 0 PID: 304 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 15.578507] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.578532] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.578557] Call Trace: [ 15.578573] <TASK> [ 15.578594] dump_stack_lvl+0x73/0xb0 [ 15.578628] print_report+0xd1/0x650 [ 15.578654] ? __virt_addr_valid+0x1db/0x2d0 [ 15.578680] ? _copy_from_user+0x32/0x90 [ 15.578711] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.578735] ? _copy_from_user+0x32/0x90 [ 15.578755] kasan_report+0x141/0x180 [ 15.578790] ? _copy_from_user+0x32/0x90 [ 15.578825] kasan_check_range+0x10c/0x1c0 [ 15.578850] __kasan_check_write+0x18/0x20 [ 15.578871] _copy_from_user+0x32/0x90 [ 15.578904] copy_user_test_oob+0x2be/0x10f0 [ 15.578932] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.578957] ? finish_task_switch.isra.0+0x153/0x700 [ 15.578982] ? __switch_to+0x47/0xf50 [ 15.579010] ? __schedule+0x10cc/0x2b60 [ 15.579034] ? __pfx_read_tsc+0x10/0x10 [ 15.579067] ? ktime_get_ts64+0x86/0x230 [ 15.579093] kunit_try_run_case+0x1a5/0x480 [ 15.579119] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.579153] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.579179] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.579205] ? __kthread_parkme+0x82/0x180 [ 15.579236] ? preempt_count_sub+0x50/0x80 [ 15.579262] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.579297] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.579324] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.579348] kthread+0x337/0x6f0 [ 15.579382] ? trace_preempt_on+0x20/0xc0 [ 15.579408] ? __pfx_kthread+0x10/0x10 [ 15.579431] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.579463] ? calculate_sigpending+0x7b/0xa0 [ 15.579489] ? __pfx_kthread+0x10/0x10 [ 15.579513] ret_from_fork+0x116/0x1d0 [ 15.579533] ? __pfx_kthread+0x10/0x10 [ 15.579556] ret_from_fork_asm+0x1a/0x30 [ 15.579589] </TASK> [ 15.579602] [ 15.591127] Allocated by task 304: [ 15.591659] kasan_save_stack+0x45/0x70 [ 15.592053] kasan_save_track+0x18/0x40 [ 15.592471] kasan_save_alloc_info+0x3b/0x50 [ 15.592688] __kasan_kmalloc+0xb7/0xc0 [ 15.592904] __kmalloc_noprof+0x1c9/0x500 [ 15.593114] kunit_kmalloc_array+0x25/0x60 [ 15.593317] copy_user_test_oob+0xab/0x10f0 [ 15.593550] kunit_try_run_case+0x1a5/0x480 [ 15.593769] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.594498] kthread+0x337/0x6f0 [ 15.594844] ret_from_fork+0x116/0x1d0 [ 15.595139] ret_from_fork_asm+0x1a/0x30 [ 15.595369] [ 15.595546] The buggy address belongs to the object at ffff8881031c1900 [ 15.595546] which belongs to the cache kmalloc-128 of size 128 [ 15.596129] The buggy address is located 0 bytes inside of [ 15.596129] allocated 120-byte region [ffff8881031c1900, ffff8881031c1978) [ 15.597519] [ 15.597628] The buggy address belongs to the physical page: [ 15.598079] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1031c1 [ 15.598852] flags: 0x200000000000000(node=0|zone=2) [ 15.599099] page_type: f5(slab) [ 15.599496] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.599979] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.600467] page dumped because: kasan: bad access detected [ 15.600737] [ 15.601019] Memory state around the buggy address: [ 15.601349] ffff8881031c1800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.601724] ffff8881031c1880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.602202] >ffff8881031c1900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.602523] ^ [ 15.602985] ffff8881031c1980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.603551] ffff8881031c1a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.604036] ==================================================================