Date
July 5, 2025, 11:11 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 18.093062] ================================================================== [ 18.093485] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 18.093865] Read of size 121 at addr ffff888103929700 by task kunit_try_catch/303 [ 18.094553] [ 18.094998] CPU: 0 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 18.095163] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.095183] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 18.095211] Call Trace: [ 18.095233] <TASK> [ 18.095257] dump_stack_lvl+0x73/0xb0 [ 18.095296] print_report+0xd1/0x650 [ 18.095325] ? __virt_addr_valid+0x1db/0x2d0 [ 18.095354] ? _copy_to_user+0x3c/0x70 [ 18.095378] ? kasan_complete_mode_report_info+0x2a/0x200 [ 18.095406] ? _copy_to_user+0x3c/0x70 [ 18.095430] kasan_report+0x141/0x180 [ 18.095457] ? _copy_to_user+0x3c/0x70 [ 18.095487] kasan_check_range+0x10c/0x1c0 [ 18.095516] __kasan_check_read+0x15/0x20 [ 18.095542] _copy_to_user+0x3c/0x70 [ 18.095566] copy_user_test_oob+0x364/0x10f0 [ 18.095597] ? __pfx_copy_user_test_oob+0x10/0x10 [ 18.095624] ? finish_task_switch.isra.0+0x153/0x700 [ 18.095652] ? __switch_to+0x47/0xf50 [ 18.095682] ? __schedule+0x10cc/0x2b60 [ 18.095710] ? __pfx_read_tsc+0x10/0x10 [ 18.095736] ? ktime_get_ts64+0x86/0x230 [ 18.095764] kunit_try_run_case+0x1a5/0x480 [ 18.095807] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.095833] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 18.095863] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 18.095890] ? __kthread_parkme+0x82/0x180 [ 18.095916] ? preempt_count_sub+0x50/0x80 [ 18.095944] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.095974] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.096001] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 18.096029] kthread+0x337/0x6f0 [ 18.096054] ? trace_preempt_on+0x20/0xc0 [ 18.096108] ? __pfx_kthread+0x10/0x10 [ 18.096134] ? _raw_spin_unlock_irq+0x47/0x80 [ 18.096160] ? calculate_sigpending+0x7b/0xa0 [ 18.096188] ? __pfx_kthread+0x10/0x10 [ 18.096214] ret_from_fork+0x116/0x1d0 [ 18.096240] ? __pfx_kthread+0x10/0x10 [ 18.096266] ret_from_fork_asm+0x1a/0x30 [ 18.096304] </TASK> [ 18.096319] [ 18.107733] Allocated by task 303: [ 18.108256] kasan_save_stack+0x45/0x70 [ 18.108539] kasan_save_track+0x18/0x40 [ 18.108713] kasan_save_alloc_info+0x3b/0x50 [ 18.108974] __kasan_kmalloc+0xb7/0xc0 [ 18.109241] __kmalloc_noprof+0x1c9/0x500 [ 18.109513] kunit_kmalloc_array+0x25/0x60 [ 18.109743] copy_user_test_oob+0xab/0x10f0 [ 18.109954] kunit_try_run_case+0x1a5/0x480 [ 18.110216] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.110583] kthread+0x337/0x6f0 [ 18.110773] ret_from_fork+0x116/0x1d0 [ 18.111018] ret_from_fork_asm+0x1a/0x30 [ 18.111254] [ 18.111376] The buggy address belongs to the object at ffff888103929700 [ 18.111376] which belongs to the cache kmalloc-128 of size 128 [ 18.112164] The buggy address is located 0 bytes inside of [ 18.112164] allocated 120-byte region [ffff888103929700, ffff888103929778) [ 18.112686] [ 18.112782] The buggy address belongs to the physical page: [ 18.113120] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103929 [ 18.113510] flags: 0x200000000000000(node=0|zone=2) [ 18.113754] page_type: f5(slab) [ 18.113998] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 18.114387] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 18.114959] page dumped because: kasan: bad access detected [ 18.115552] [ 18.115857] Memory state around the buggy address: [ 18.116287] ffff888103929600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.116745] ffff888103929680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.117353] >ffff888103929700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 18.117816] ^ [ 18.118461] ffff888103929780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.118989] ffff888103929800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.119570] ==================================================================