Date
July 19, 2025, 11:11 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.092454] ================================================================== [ 16.093908] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.094881] Write of size 121 at addr ffff888102f59b00 by task kunit_try_catch/303 [ 16.095654] [ 16.095766] CPU: 1 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 16.095820] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.095833] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.095857] Call Trace: [ 16.095871] <TASK> [ 16.095893] dump_stack_lvl+0x73/0xb0 [ 16.095930] print_report+0xd1/0x610 [ 16.095956] ? __virt_addr_valid+0x1db/0x2d0 [ 16.095982] ? _copy_from_user+0x32/0x90 [ 16.096002] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.096025] ? _copy_from_user+0x32/0x90 [ 16.096045] kasan_report+0x141/0x180 [ 16.096067] ? _copy_from_user+0x32/0x90 [ 16.096093] kasan_check_range+0x10c/0x1c0 [ 16.096117] __kasan_check_write+0x18/0x20 [ 16.096137] _copy_from_user+0x32/0x90 [ 16.096364] copy_user_test_oob+0x2be/0x10f0 [ 16.096396] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.096421] ? finish_task_switch.isra.0+0x153/0x700 [ 16.096448] ? __switch_to+0x47/0xf50 [ 16.096530] ? __schedule+0x10cc/0x2b60 [ 16.096555] ? __pfx_read_tsc+0x10/0x10 [ 16.096578] ? ktime_get_ts64+0x86/0x230 [ 16.096604] kunit_try_run_case+0x1a5/0x480 [ 16.096629] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.096652] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.096678] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.096702] ? __kthread_parkme+0x82/0x180 [ 16.096725] ? preempt_count_sub+0x50/0x80 [ 16.096749] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.096774] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.096800] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.096825] kthread+0x337/0x6f0 [ 16.096845] ? trace_preempt_on+0x20/0xc0 [ 16.096871] ? __pfx_kthread+0x10/0x10 [ 16.096891] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.096913] ? calculate_sigpending+0x7b/0xa0 [ 16.096939] ? __pfx_kthread+0x10/0x10 [ 16.096962] ret_from_fork+0x116/0x1d0 [ 16.096981] ? __pfx_kthread+0x10/0x10 [ 16.097002] ret_from_fork_asm+0x1a/0x30 [ 16.097034] </TASK> [ 16.097047] [ 16.113222] Allocated by task 303: [ 16.113720] kasan_save_stack+0x45/0x70 [ 16.114287] kasan_save_track+0x18/0x40 [ 16.114650] kasan_save_alloc_info+0x3b/0x50 [ 16.114815] __kasan_kmalloc+0xb7/0xc0 [ 16.114951] __kmalloc_noprof+0x1c9/0x500 [ 16.115095] kunit_kmalloc_array+0x25/0x60 [ 16.115250] copy_user_test_oob+0xab/0x10f0 [ 16.115401] kunit_try_run_case+0x1a5/0x480 [ 16.116125] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.116786] kthread+0x337/0x6f0 [ 16.117260] ret_from_fork+0x116/0x1d0 [ 16.117796] ret_from_fork_asm+0x1a/0x30 [ 16.118329] [ 16.118643] The buggy address belongs to the object at ffff888102f59b00 [ 16.118643] which belongs to the cache kmalloc-128 of size 128 [ 16.120054] The buggy address is located 0 bytes inside of [ 16.120054] allocated 120-byte region [ffff888102f59b00, ffff888102f59b78) [ 16.121246] [ 16.121557] The buggy address belongs to the physical page: [ 16.121950] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102f59 [ 16.122546] flags: 0x200000000000000(node=0|zone=2) [ 16.123126] page_type: f5(slab) [ 16.123601] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.124313] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.124858] page dumped because: kasan: bad access detected [ 16.125050] [ 16.125126] Memory state around the buggy address: [ 16.126045] ffff888102f59a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.126924] ffff888102f59a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.127611] >ffff888102f59b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.127837] ^ [ 16.128057] ffff888102f59b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.129056] ffff888102f59c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.129889] ==================================================================