Date
July 5, 2025, 11:11 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 18.058589] ================================================================== [ 18.059346] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 18.060579] Write of size 121 at addr ffff888103929700 by task kunit_try_catch/303 [ 18.061765] [ 18.062139] CPU: 0 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 18.062210] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.062328] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 18.062360] Call Trace: [ 18.062380] <TASK> [ 18.062410] dump_stack_lvl+0x73/0xb0 [ 18.062456] print_report+0xd1/0x650 [ 18.062487] ? __virt_addr_valid+0x1db/0x2d0 [ 18.062520] ? _copy_from_user+0x32/0x90 [ 18.062544] ? kasan_complete_mode_report_info+0x2a/0x200 [ 18.062572] ? _copy_from_user+0x32/0x90 [ 18.062596] kasan_report+0x141/0x180 [ 18.062623] ? _copy_from_user+0x32/0x90 [ 18.062651] kasan_check_range+0x10c/0x1c0 [ 18.062680] __kasan_check_write+0x18/0x20 [ 18.062704] _copy_from_user+0x32/0x90 [ 18.062730] copy_user_test_oob+0x2be/0x10f0 [ 18.062763] ? __pfx_copy_user_test_oob+0x10/0x10 [ 18.062802] ? finish_task_switch.isra.0+0x153/0x700 [ 18.062831] ? __switch_to+0x47/0xf50 [ 18.062864] ? __schedule+0x10cc/0x2b60 [ 18.062891] ? __pfx_read_tsc+0x10/0x10 [ 18.062918] ? ktime_get_ts64+0x86/0x230 [ 18.062949] kunit_try_run_case+0x1a5/0x480 [ 18.062978] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.063004] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 18.063034] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 18.063063] ? __kthread_parkme+0x82/0x180 [ 18.063102] ? preempt_count_sub+0x50/0x80 [ 18.063131] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.063161] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.063189] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 18.063219] kthread+0x337/0x6f0 [ 18.063244] ? trace_preempt_on+0x20/0xc0 [ 18.063274] ? __pfx_kthread+0x10/0x10 [ 18.063300] ? _raw_spin_unlock_irq+0x47/0x80 [ 18.063326] ? calculate_sigpending+0x7b/0xa0 [ 18.063357] ? __pfx_kthread+0x10/0x10 [ 18.063383] ret_from_fork+0x116/0x1d0 [ 18.063408] ? __pfx_kthread+0x10/0x10 [ 18.063433] ret_from_fork_asm+0x1a/0x30 [ 18.063471] </TASK> [ 18.063489] [ 18.075343] Allocated by task 303: [ 18.075647] kasan_save_stack+0x45/0x70 [ 18.076037] kasan_save_track+0x18/0x40 [ 18.076485] kasan_save_alloc_info+0x3b/0x50 [ 18.076883] __kasan_kmalloc+0xb7/0xc0 [ 18.077098] __kmalloc_noprof+0x1c9/0x500 [ 18.077320] kunit_kmalloc_array+0x25/0x60 [ 18.077551] copy_user_test_oob+0xab/0x10f0 [ 18.077776] kunit_try_run_case+0x1a5/0x480 [ 18.077963] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.078164] kthread+0x337/0x6f0 [ 18.078407] ret_from_fork+0x116/0x1d0 [ 18.078633] ret_from_fork_asm+0x1a/0x30 [ 18.078854] [ 18.078966] The buggy address belongs to the object at ffff888103929700 [ 18.078966] which belongs to the cache kmalloc-128 of size 128 [ 18.079485] The buggy address is located 0 bytes inside of [ 18.079485] allocated 120-byte region [ffff888103929700, ffff888103929778) [ 18.080079] [ 18.080389] The buggy address belongs to the physical page: [ 18.080676] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103929 [ 18.081075] flags: 0x200000000000000(node=0|zone=2) [ 18.081944] page_type: f5(slab) [ 18.082296] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 18.082669] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 18.083037] page dumped because: kasan: bad access detected [ 18.083621] [ 18.083953] Memory state around the buggy address: [ 18.084476] ffff888103929600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.084924] ffff888103929680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.085508] >ffff888103929700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 18.086313] ^ [ 18.086666] ffff888103929780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.087013] ffff888103929800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.087703] ==================================================================