Date
July 1, 2025, 12:10 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.298344] ================================================================== [ 15.299648] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 15.300042] Write of size 121 at addr ffff888103917500 by task kunit_try_catch/302 [ 15.300574] [ 15.300776] CPU: 1 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 15.300826] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.300840] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.300864] Call Trace: [ 15.300889] <TASK> [ 15.300909] dump_stack_lvl+0x73/0xb0 [ 15.300941] print_report+0xd1/0x650 [ 15.300979] ? __virt_addr_valid+0x1db/0x2d0 [ 15.301004] ? _copy_from_user+0x32/0x90 [ 15.301024] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.301058] ? _copy_from_user+0x32/0x90 [ 15.301078] kasan_report+0x141/0x180 [ 15.301101] ? _copy_from_user+0x32/0x90 [ 15.301126] kasan_check_range+0x10c/0x1c0 [ 15.301151] __kasan_check_write+0x18/0x20 [ 15.301179] _copy_from_user+0x32/0x90 [ 15.301201] copy_user_test_oob+0x2be/0x10f0 [ 15.301227] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.301250] ? finish_task_switch.isra.0+0x153/0x700 [ 15.301273] ? __switch_to+0x47/0xf50 [ 15.301300] ? __schedule+0x10cc/0x2b60 [ 15.301322] ? __pfx_read_tsc+0x10/0x10 [ 15.301344] ? ktime_get_ts64+0x86/0x230 [ 15.301371] kunit_try_run_case+0x1a5/0x480 [ 15.301395] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.301418] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.301442] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.301465] ? __kthread_parkme+0x82/0x180 [ 15.301487] ? preempt_count_sub+0x50/0x80 [ 15.301510] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.301535] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.301558] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.301581] kthread+0x337/0x6f0 [ 15.301601] ? trace_preempt_on+0x20/0xc0 [ 15.301626] ? __pfx_kthread+0x10/0x10 [ 15.301647] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.301668] ? calculate_sigpending+0x7b/0xa0 [ 15.301693] ? __pfx_kthread+0x10/0x10 [ 15.301715] ret_from_fork+0x116/0x1d0 [ 15.301734] ? __pfx_kthread+0x10/0x10 [ 15.301755] ret_from_fork_asm+0x1a/0x30 [ 15.301786] </TASK> [ 15.301798] [ 15.313628] Allocated by task 302: [ 15.313962] kasan_save_stack+0x45/0x70 [ 15.314367] kasan_save_track+0x18/0x40 [ 15.314741] kasan_save_alloc_info+0x3b/0x50 [ 15.315149] __kasan_kmalloc+0xb7/0xc0 [ 15.315543] __kmalloc_noprof+0x1c9/0x500 [ 15.315925] kunit_kmalloc_array+0x25/0x60 [ 15.316331] copy_user_test_oob+0xab/0x10f0 [ 15.316728] kunit_try_run_case+0x1a5/0x480 [ 15.317043] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.317238] kthread+0x337/0x6f0 [ 15.317575] ret_from_fork+0x116/0x1d0 [ 15.317866] ret_from_fork_asm+0x1a/0x30 [ 15.318167] [ 15.318245] The buggy address belongs to the object at ffff888103917500 [ 15.318245] which belongs to the cache kmalloc-128 of size 128 [ 15.318853] The buggy address is located 0 bytes inside of [ 15.318853] allocated 120-byte region [ffff888103917500, ffff888103917578) [ 15.319415] [ 15.319596] The buggy address belongs to the physical page: [ 15.320099] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103917 [ 15.320919] flags: 0x200000000000000(node=0|zone=2) [ 15.321380] page_type: f5(slab) [ 15.321694] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.322393] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.322938] page dumped because: kasan: bad access detected [ 15.323132] [ 15.323310] Memory state around the buggy address: [ 15.323733] ffff888103917400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.324413] ffff888103917480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.325043] >ffff888103917500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.325403] ^ [ 15.326017] ffff888103917580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.326497] ffff888103917600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.327147] ==================================================================