Date
July 11, 2025, 11:09 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.397221] ================================================================== [ 16.398452] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.399151] Write of size 121 at addr ffff888103953e00 by task kunit_try_catch/302 [ 16.400193] [ 16.400325] CPU: 0 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 16.400374] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.400387] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.400411] Call Trace: [ 16.400425] <TASK> [ 16.400445] dump_stack_lvl+0x73/0xb0 [ 16.400479] print_report+0xd1/0x650 [ 16.400504] ? __virt_addr_valid+0x1db/0x2d0 [ 16.400529] ? _copy_from_user+0x32/0x90 [ 16.400549] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.400577] ? _copy_from_user+0x32/0x90 [ 16.400599] kasan_report+0x141/0x180 [ 16.400622] ? _copy_from_user+0x32/0x90 [ 16.400648] kasan_check_range+0x10c/0x1c0 [ 16.400673] __kasan_check_write+0x18/0x20 [ 16.400693] _copy_from_user+0x32/0x90 [ 16.400715] copy_user_test_oob+0x2be/0x10f0 [ 16.400742] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.400766] ? finish_task_switch.isra.0+0x153/0x700 [ 16.400791] ? __switch_to+0x47/0xf50 [ 16.400819] ? irqentry_exit+0x2a/0x60 [ 16.400842] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 16.401009] ? __pfx_read_tsc+0x10/0x10 [ 16.401035] ? ktime_get_ts64+0x86/0x230 [ 16.401062] kunit_try_run_case+0x1a5/0x480 [ 16.401088] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.401116] ? __kthread_parkme+0x8f/0x180 [ 16.401140] ? __kthread_parkme+0xfa/0x180 [ 16.401163] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.401188] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.401215] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.401241] kthread+0x337/0x6f0 [ 16.401261] ? trace_preempt_on+0x20/0xc0 [ 16.401286] ? __pfx_kthread+0x10/0x10 [ 16.401308] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.401332] ? calculate_sigpending+0x7b/0xa0 [ 16.401357] ? __pfx_kthread+0x10/0x10 [ 16.401380] ret_from_fork+0x116/0x1d0 [ 16.401399] ? __pfx_kthread+0x10/0x10 [ 16.401421] ret_from_fork_asm+0x1a/0x30 [ 16.401455] </TASK> [ 16.401467] [ 16.413737] Allocated by task 302: [ 16.414313] kasan_save_stack+0x45/0x70 [ 16.414481] kasan_save_track+0x18/0x40 [ 16.414967] kasan_save_alloc_info+0x3b/0x50 [ 16.415282] __kasan_kmalloc+0xb7/0xc0 [ 16.415596] __kmalloc_noprof+0x1c9/0x500 [ 16.415928] kunit_kmalloc_array+0x25/0x60 [ 16.416294] copy_user_test_oob+0xab/0x10f0 [ 16.416528] kunit_try_run_case+0x1a5/0x480 [ 16.416885] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.417329] kthread+0x337/0x6f0 [ 16.417522] ret_from_fork+0x116/0x1d0 [ 16.417801] ret_from_fork_asm+0x1a/0x30 [ 16.418202] [ 16.418301] The buggy address belongs to the object at ffff888103953e00 [ 16.418301] which belongs to the cache kmalloc-128 of size 128 [ 16.419519] The buggy address is located 0 bytes inside of [ 16.419519] allocated 120-byte region [ffff888103953e00, ffff888103953e78) [ 16.419878] [ 16.420269] The buggy address belongs to the physical page: [ 16.420576] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103953 [ 16.420816] flags: 0x200000000000000(node=0|zone=2) [ 16.421261] page_type: f5(slab) [ 16.421390] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.421721] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.423210] page dumped because: kasan: bad access detected [ 16.423483] [ 16.423558] Memory state around the buggy address: [ 16.423719] ffff888103953d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.423959] ffff888103953d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.424179] >ffff888103953e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.424396] ^ [ 16.424612] ffff888103953e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.424827] ffff888103953f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.426767] ==================================================================