Date
July 10, 2025, 11:10 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.634231] ================================================================== [ 16.634688] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 16.635017] Read of size 121 at addr ffff888103a2f000 by task kunit_try_catch/303 [ 16.635421] [ 16.635551] CPU: 0 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 16.635644] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.635657] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.635688] Call Trace: [ 16.635715] <TASK> [ 16.635730] dump_stack_lvl+0x73/0xb0 [ 16.635761] print_report+0xd1/0x650 [ 16.635846] ? __virt_addr_valid+0x1db/0x2d0 [ 16.635870] ? _copy_to_user+0x3c/0x70 [ 16.635908] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.635933] ? _copy_to_user+0x3c/0x70 [ 16.635954] kasan_report+0x141/0x180 [ 16.635976] ? _copy_to_user+0x3c/0x70 [ 16.636001] kasan_check_range+0x10c/0x1c0 [ 16.636026] __kasan_check_read+0x15/0x20 [ 16.636046] _copy_to_user+0x3c/0x70 [ 16.636068] copy_user_test_oob+0x364/0x10f0 [ 16.636095] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.636119] ? finish_task_switch.isra.0+0x153/0x700 [ 16.636143] ? __switch_to+0x47/0xf50 [ 16.636174] ? __schedule+0x10cc/0x2b60 [ 16.636197] ? __pfx_read_tsc+0x10/0x10 [ 16.636220] ? ktime_get_ts64+0x86/0x230 [ 16.636244] kunit_try_run_case+0x1a5/0x480 [ 16.636269] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.636293] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.636319] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.636357] ? __kthread_parkme+0x82/0x180 [ 16.636379] ? preempt_count_sub+0x50/0x80 [ 16.636403] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.636441] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.636468] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.636495] kthread+0x337/0x6f0 [ 16.636515] ? trace_preempt_on+0x20/0xc0 [ 16.636539] ? __pfx_kthread+0x10/0x10 [ 16.636561] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.636584] ? calculate_sigpending+0x7b/0xa0 [ 16.636609] ? __pfx_kthread+0x10/0x10 [ 16.636632] ret_from_fork+0x116/0x1d0 [ 16.636652] ? __pfx_kthread+0x10/0x10 [ 16.636674] ret_from_fork_asm+0x1a/0x30 [ 16.636705] </TASK> [ 16.636716] [ 16.645424] Allocated by task 303: [ 16.645747] kasan_save_stack+0x45/0x70 [ 16.645997] kasan_save_track+0x18/0x40 [ 16.646204] kasan_save_alloc_info+0x3b/0x50 [ 16.646742] __kasan_kmalloc+0xb7/0xc0 [ 16.646899] __kmalloc_noprof+0x1c9/0x500 [ 16.647040] kunit_kmalloc_array+0x25/0x60 [ 16.647247] copy_user_test_oob+0xab/0x10f0 [ 16.647682] kunit_try_run_case+0x1a5/0x480 [ 16.647971] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.648219] kthread+0x337/0x6f0 [ 16.648420] ret_from_fork+0x116/0x1d0 [ 16.648628] ret_from_fork_asm+0x1a/0x30 [ 16.648863] [ 16.648963] The buggy address belongs to the object at ffff888103a2f000 [ 16.648963] which belongs to the cache kmalloc-128 of size 128 [ 16.649566] The buggy address is located 0 bytes inside of [ 16.649566] allocated 120-byte region [ffff888103a2f000, ffff888103a2f078) [ 16.650110] [ 16.650198] The buggy address belongs to the physical page: [ 16.650412] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a2f [ 16.650691] flags: 0x200000000000000(node=0|zone=2) [ 16.650926] page_type: f5(slab) [ 16.651053] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.651463] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.651749] page dumped because: kasan: bad access detected [ 16.651968] [ 16.652060] Memory state around the buggy address: [ 16.652553] ffff888103a2ef00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.652853] ffff888103a2ef80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.653129] >ffff888103a2f000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.653495] ^ [ 16.653945] ffff888103a2f080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.654202] ffff888103a2f100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.654645] ==================================================================