Date
July 16, 2025, 3:10 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.676643] ================================================================== [ 16.677012] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 16.677402] Read of size 121 at addr ffff88810307db00 by task kunit_try_catch/302 [ 16.677725] [ 16.678088] CPU: 0 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 16.678139] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.678153] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.678176] Call Trace: [ 16.678193] <TASK> [ 16.678209] dump_stack_lvl+0x73/0xb0 [ 16.678242] print_report+0xd1/0x610 [ 16.678268] ? __virt_addr_valid+0x1db/0x2d0 [ 16.678293] ? _copy_to_user+0x3c/0x70 [ 16.678314] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.678339] ? _copy_to_user+0x3c/0x70 [ 16.678361] kasan_report+0x141/0x180 [ 16.678384] ? _copy_to_user+0x3c/0x70 [ 16.678410] kasan_check_range+0x10c/0x1c0 [ 16.678436] __kasan_check_read+0x15/0x20 [ 16.678526] _copy_to_user+0x3c/0x70 [ 16.678548] copy_user_test_oob+0x364/0x10f0 [ 16.678577] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.678602] ? finish_task_switch.isra.0+0x153/0x700 [ 16.678628] ? __switch_to+0x47/0xf50 [ 16.678654] ? __schedule+0x10cc/0x2b60 [ 16.678680] ? __pfx_read_tsc+0x10/0x10 [ 16.678704] ? ktime_get_ts64+0x86/0x230 [ 16.678730] kunit_try_run_case+0x1a5/0x480 [ 16.678756] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.678795] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.678823] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.678849] ? __kthread_parkme+0x82/0x180 [ 16.678872] ? preempt_count_sub+0x50/0x80 [ 16.678898] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.678925] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.678952] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.678979] kthread+0x337/0x6f0 [ 16.679001] ? trace_preempt_on+0x20/0xc0 [ 16.679027] ? __pfx_kthread+0x10/0x10 [ 16.679049] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.679073] ? calculate_sigpending+0x7b/0xa0 [ 16.679099] ? __pfx_kthread+0x10/0x10 [ 16.679122] ret_from_fork+0x116/0x1d0 [ 16.679143] ? __pfx_kthread+0x10/0x10 [ 16.679166] ret_from_fork_asm+0x1a/0x30 [ 16.679203] </TASK> [ 16.679214] [ 16.688844] Allocated by task 302: [ 16.689028] kasan_save_stack+0x45/0x70 [ 16.689189] kasan_save_track+0x18/0x40 [ 16.689388] kasan_save_alloc_info+0x3b/0x50 [ 16.689945] __kasan_kmalloc+0xb7/0xc0 [ 16.690115] __kmalloc_noprof+0x1c9/0x500 [ 16.690440] kunit_kmalloc_array+0x25/0x60 [ 16.690686] copy_user_test_oob+0xab/0x10f0 [ 16.690973] kunit_try_run_case+0x1a5/0x480 [ 16.691229] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.691575] kthread+0x337/0x6f0 [ 16.691729] ret_from_fork+0x116/0x1d0 [ 16.692033] ret_from_fork_asm+0x1a/0x30 [ 16.692271] [ 16.692374] The buggy address belongs to the object at ffff88810307db00 [ 16.692374] which belongs to the cache kmalloc-128 of size 128 [ 16.693094] The buggy address is located 0 bytes inside of [ 16.693094] allocated 120-byte region [ffff88810307db00, ffff88810307db78) [ 16.693651] [ 16.693879] The buggy address belongs to the physical page: [ 16.694079] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10307d [ 16.694556] flags: 0x200000000000000(node=0|zone=2) [ 16.694832] page_type: f5(slab) [ 16.695001] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.695433] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.695844] page dumped because: kasan: bad access detected [ 16.696107] [ 16.696188] Memory state around the buggy address: [ 16.696394] ffff88810307da00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.696904] ffff88810307da80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.697285] >ffff88810307db00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.697614] ^ [ 16.698048] ffff88810307db80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.698409] ffff88810307dc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.698821] ==================================================================