Date
July 19, 2025, 11:12 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.985141] ================================================================== [ 15.985479] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70 [ 15.985738] Read of size 121 at addr ffff888102fd1e00 by task kunit_try_catch/303 [ 15.986041] [ 15.986154] CPU: 0 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 15.986197] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.986209] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.986230] Call Trace: [ 15.986243] <TASK> [ 15.986259] dump_stack_lvl+0x73/0xb0 [ 15.986285] print_report+0xd1/0x610 [ 15.986308] ? __virt_addr_valid+0x1db/0x2d0 [ 15.986330] ? _copy_to_user+0x3c/0x70 [ 15.986349] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.986372] ? _copy_to_user+0x3c/0x70 [ 15.986391] kasan_report+0x141/0x180 [ 15.986422] ? _copy_to_user+0x3c/0x70 [ 15.986445] kasan_check_range+0x10c/0x1c0 [ 15.986469] __kasan_check_read+0x15/0x20 [ 15.986488] _copy_to_user+0x3c/0x70 [ 15.986508] copy_user_test_oob+0x364/0x10f0 [ 15.986534] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.986557] ? finish_task_switch.isra.0+0x153/0x700 [ 15.986579] ? __switch_to+0x47/0xf50 [ 15.986604] ? __schedule+0x10cc/0x2b60 [ 15.986626] ? __pfx_read_tsc+0x10/0x10 [ 15.986648] ? ktime_get_ts64+0x86/0x230 [ 15.986672] kunit_try_run_case+0x1a5/0x480 [ 15.986696] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.986718] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.986743] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.986766] ? __kthread_parkme+0x82/0x180 [ 15.986787] ? preempt_count_sub+0x50/0x80 [ 15.986810] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.986835] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.986858] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.986882] kthread+0x337/0x6f0 [ 15.986902] ? trace_preempt_on+0x20/0xc0 [ 15.986925] ? __pfx_kthread+0x10/0x10 [ 15.986946] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.986968] ? calculate_sigpending+0x7b/0xa0 [ 15.986991] ? __pfx_kthread+0x10/0x10 [ 15.987024] ret_from_fork+0x116/0x1d0 [ 15.987044] ? __pfx_kthread+0x10/0x10 [ 15.987065] ret_from_fork_asm+0x1a/0x30 [ 15.987096] </TASK> [ 15.987106] [ 15.994254] Allocated by task 303: [ 15.994423] kasan_save_stack+0x45/0x70 [ 15.994596] kasan_save_track+0x18/0x40 [ 15.994764] kasan_save_alloc_info+0x3b/0x50 [ 15.994913] __kasan_kmalloc+0xb7/0xc0 [ 15.995058] __kmalloc_noprof+0x1c9/0x500 [ 15.995251] kunit_kmalloc_array+0x25/0x60 [ 15.995459] copy_user_test_oob+0xab/0x10f0 [ 15.995669] kunit_try_run_case+0x1a5/0x480 [ 15.995922] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.996109] kthread+0x337/0x6f0 [ 15.996229] ret_from_fork+0x116/0x1d0 [ 15.996385] ret_from_fork_asm+0x1a/0x30 [ 15.996594] [ 15.996688] The buggy address belongs to the object at ffff888102fd1e00 [ 15.996688] which belongs to the cache kmalloc-128 of size 128 [ 15.997249] The buggy address is located 0 bytes inside of [ 15.997249] allocated 120-byte region [ffff888102fd1e00, ffff888102fd1e78) [ 15.997754] [ 15.997843] The buggy address belongs to the physical page: [ 15.998060] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102fd1 [ 15.998383] flags: 0x200000000000000(node=0|zone=2) [ 15.998602] page_type: f5(slab) [ 15.998757] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.999047] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.999275] page dumped because: kasan: bad access detected [ 15.999581] [ 15.999681] Memory state around the buggy address: [ 15.999902] ffff888102fd1d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.000233] ffff888102fd1d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.000547] >ffff888102fd1e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.000766] ^ [ 16.001100] ffff888102fd1e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.001438] ffff888102fd1f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.001714] ==================================================================