Date
July 4, 2025, 11:11 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.100051] ================================================================== [ 16.100863] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.101278] Write of size 121 at addr ffff888103980f00 by task kunit_try_catch/302 [ 16.101802] [ 16.101937] CPU: 1 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 16.101994] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.102007] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.102034] Call Trace: [ 16.102050] <TASK> [ 16.102075] dump_stack_lvl+0x73/0xb0 [ 16.102111] print_report+0xd1/0x650 [ 16.102136] ? __virt_addr_valid+0x1db/0x2d0 [ 16.102163] ? _copy_from_user+0x32/0x90 [ 16.102183] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.102206] ? _copy_from_user+0x32/0x90 [ 16.102237] kasan_report+0x141/0x180 [ 16.102278] ? _copy_from_user+0x32/0x90 [ 16.102303] kasan_check_range+0x10c/0x1c0 [ 16.102326] __kasan_check_write+0x18/0x20 [ 16.102347] _copy_from_user+0x32/0x90 [ 16.102366] copy_user_test_oob+0x2be/0x10f0 [ 16.102392] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.102415] ? finish_task_switch.isra.0+0x153/0x700 [ 16.102438] ? __switch_to+0x47/0xf50 [ 16.102464] ? __schedule+0x10cc/0x2b60 [ 16.102488] ? __pfx_read_tsc+0x10/0x10 [ 16.102511] ? ktime_get_ts64+0x86/0x230 [ 16.102537] kunit_try_run_case+0x1a5/0x480 [ 16.102561] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.102583] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.102608] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.102632] ? __kthread_parkme+0x82/0x180 [ 16.102654] ? preempt_count_sub+0x50/0x80 [ 16.102677] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.102701] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.102724] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.102747] kthread+0x337/0x6f0 [ 16.102767] ? trace_preempt_on+0x20/0xc0 [ 16.102792] ? __pfx_kthread+0x10/0x10 [ 16.102813] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.102834] ? calculate_sigpending+0x7b/0xa0 [ 16.102859] ? __pfx_kthread+0x10/0x10 [ 16.102881] ret_from_fork+0x116/0x1d0 [ 16.102900] ? __pfx_kthread+0x10/0x10 [ 16.102921] ret_from_fork_asm+0x1a/0x30 [ 16.102953] </TASK> [ 16.102966] [ 16.113314] Allocated by task 302: [ 16.113586] kasan_save_stack+0x45/0x70 [ 16.113923] kasan_save_track+0x18/0x40 [ 16.114116] kasan_save_alloc_info+0x3b/0x50 [ 16.114562] __kasan_kmalloc+0xb7/0xc0 [ 16.114773] __kmalloc_noprof+0x1c9/0x500 [ 16.115086] kunit_kmalloc_array+0x25/0x60 [ 16.115453] copy_user_test_oob+0xab/0x10f0 [ 16.115656] kunit_try_run_case+0x1a5/0x480 [ 16.115847] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.116081] kthread+0x337/0x6f0 [ 16.116249] ret_from_fork+0x116/0x1d0 [ 16.116425] ret_from_fork_asm+0x1a/0x30 [ 16.116607] [ 16.116700] The buggy address belongs to the object at ffff888103980f00 [ 16.116700] which belongs to the cache kmalloc-128 of size 128 [ 16.117194] The buggy address is located 0 bytes inside of [ 16.117194] allocated 120-byte region [ffff888103980f00, ffff888103980f78) [ 16.118174] [ 16.118472] The buggy address belongs to the physical page: [ 16.118768] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103980 [ 16.119383] flags: 0x200000000000000(node=0|zone=2) [ 16.119805] page_type: f5(slab) [ 16.120112] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.120612] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.121255] page dumped because: kasan: bad access detected [ 16.121654] [ 16.121752] Memory state around the buggy address: [ 16.121974] ffff888103980e00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.122539] ffff888103980e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.122974] >ffff888103980f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.123587] ^ [ 16.123960] ffff888103980f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.124430] ffff888103981000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.124884] ==================================================================