Date
July 10, 2025, 6:10 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.485881] ================================================================== [ 16.486470] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.486743] Write of size 121 at addr ffff888102791f00 by task kunit_try_catch/302 [ 16.487066] [ 16.487383] CPU: 1 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 16.487433] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.487448] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.487472] Call Trace: [ 16.487486] <TASK> [ 16.487505] dump_stack_lvl+0x73/0xb0 [ 16.487538] print_report+0xd1/0x650 [ 16.487561] ? __virt_addr_valid+0x1db/0x2d0 [ 16.487587] ? _copy_from_user+0x32/0x90 [ 16.487607] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.487633] ? _copy_from_user+0x32/0x90 [ 16.487653] kasan_report+0x141/0x180 [ 16.487676] ? _copy_from_user+0x32/0x90 [ 16.487701] kasan_check_range+0x10c/0x1c0 [ 16.487725] __kasan_check_write+0x18/0x20 [ 16.487746] _copy_from_user+0x32/0x90 [ 16.487768] copy_user_test_oob+0x2be/0x10f0 [ 16.487795] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.487820] ? finish_task_switch.isra.0+0x153/0x700 [ 16.487845] ? __switch_to+0x47/0xf50 [ 16.487872] ? __schedule+0x10cc/0x2b60 [ 16.487896] ? __pfx_read_tsc+0x10/0x10 [ 16.487919] ? ktime_get_ts64+0x86/0x230 [ 16.487969] kunit_try_run_case+0x1a5/0x480 [ 16.487996] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.488020] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.488057] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.488082] ? __kthread_parkme+0x82/0x180 [ 16.488106] ? preempt_count_sub+0x50/0x80 [ 16.488131] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.488156] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.488183] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.488210] kthread+0x337/0x6f0 [ 16.488231] ? trace_preempt_on+0x20/0xc0 [ 16.488255] ? __pfx_kthread+0x10/0x10 [ 16.488277] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.488300] ? calculate_sigpending+0x7b/0xa0 [ 16.488326] ? __pfx_kthread+0x10/0x10 [ 16.488350] ret_from_fork+0x116/0x1d0 [ 16.488371] ? __pfx_kthread+0x10/0x10 [ 16.488393] ret_from_fork_asm+0x1a/0x30 [ 16.488426] </TASK> [ 16.488438] [ 16.498080] Allocated by task 302: [ 16.498254] kasan_save_stack+0x45/0x70 [ 16.498429] kasan_save_track+0x18/0x40 [ 16.498625] kasan_save_alloc_info+0x3b/0x50 [ 16.498814] __kasan_kmalloc+0xb7/0xc0 [ 16.499020] __kmalloc_noprof+0x1c9/0x500 [ 16.499585] kunit_kmalloc_array+0x25/0x60 [ 16.499754] copy_user_test_oob+0xab/0x10f0 [ 16.500143] kunit_try_run_case+0x1a5/0x480 [ 16.500446] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.500646] kthread+0x337/0x6f0 [ 16.500930] ret_from_fork+0x116/0x1d0 [ 16.501197] ret_from_fork_asm+0x1a/0x30 [ 16.501528] [ 16.501612] The buggy address belongs to the object at ffff888102791f00 [ 16.501612] which belongs to the cache kmalloc-128 of size 128 [ 16.502324] The buggy address is located 0 bytes inside of [ 16.502324] allocated 120-byte region [ffff888102791f00, ffff888102791f78) [ 16.502824] [ 16.502930] The buggy address belongs to the physical page: [ 16.503467] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102791 [ 16.503884] flags: 0x200000000000000(node=0|zone=2) [ 16.504265] page_type: f5(slab) [ 16.504417] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.504888] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.505325] page dumped because: kasan: bad access detected [ 16.505649] [ 16.505740] Memory state around the buggy address: [ 16.505931] ffff888102791e00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.506464] ffff888102791e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.506760] >ffff888102791f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.507169] ^ [ 16.507476] ffff888102791f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.507866] ffff888102792000: 00 00 00 00 07 fc fc fc fc fc fc fc fc fc fc fc [ 16.508263] ==================================================================