Date
June 2, 2025, 2:11 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 21.994295] ================================================================== [ 21.995204] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 21.995820] Write of size 121 at addr ffff888101e0b000 by task kunit_try_catch/306 [ 21.996420] [ 21.996670] CPU: 1 UID: 0 PID: 306 Comm: kunit_try_catch Tainted: G B N 6.15.1-rc1 #1 PREEMPT(voluntary) [ 21.996837] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.996878] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 21.996926] Call Trace: [ 21.996958] <TASK> [ 21.997007] dump_stack_lvl+0x73/0xb0 [ 21.997082] print_report+0xd1/0x650 [ 21.997133] ? __virt_addr_valid+0x1db/0x2d0 [ 21.997192] ? _copy_from_user+0x32/0x90 [ 21.997242] ? kasan_complete_mode_report_info+0x2a/0x200 [ 21.997300] ? _copy_from_user+0x32/0x90 [ 21.997350] kasan_report+0x141/0x180 [ 21.997407] ? _copy_from_user+0x32/0x90 [ 21.997470] kasan_check_range+0x10c/0x1c0 [ 21.997524] __kasan_check_write+0x18/0x20 [ 21.997574] _copy_from_user+0x32/0x90 [ 21.997614] copy_user_test_oob+0x2be/0x10f0 [ 21.997660] ? __pfx_copy_user_test_oob+0x10/0x10 [ 21.997698] ? finish_task_switch.isra.0+0x153/0x700 [ 21.997762] ? __switch_to+0x5d9/0xf60 [ 21.997811] ? dequeue_task_fair+0x166/0x4e0 [ 21.997955] ? __schedule+0x10cc/0x2b30 [ 21.998057] ? __pfx_read_tsc+0x10/0x10 [ 21.998114] ? ktime_get_ts64+0x86/0x230 [ 21.998172] kunit_try_run_case+0x1a5/0x480 [ 21.998231] ? __pfx_kunit_try_run_case+0x10/0x10 [ 21.998282] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 21.998337] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 21.998376] ? __kthread_parkme+0x82/0x180 [ 21.998404] ? preempt_count_sub+0x50/0x80 [ 21.998431] ? __pfx_kunit_try_run_case+0x10/0x10 [ 21.998458] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 21.998486] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 21.998512] kthread+0x337/0x6f0 [ 21.998533] ? trace_preempt_on+0x20/0xc0 [ 21.998561] ? __pfx_kthread+0x10/0x10 [ 21.998583] ? _raw_spin_unlock_irq+0x47/0x80 [ 21.998607] ? calculate_sigpending+0x7b/0xa0 [ 21.998634] ? __pfx_kthread+0x10/0x10 [ 21.998656] ret_from_fork+0x41/0x80 [ 21.998680] ? __pfx_kthread+0x10/0x10 [ 21.998702] ret_from_fork_asm+0x1a/0x30 [ 21.998738] </TASK> [ 21.998779] [ 22.012151] Allocated by task 306: [ 22.012629] kasan_save_stack+0x45/0x70 [ 22.012836] kasan_save_track+0x18/0x40 [ 22.012954] kasan_save_alloc_info+0x3b/0x50 [ 22.013074] __kasan_kmalloc+0xb7/0xc0 [ 22.013290] __kmalloc_noprof+0x1c9/0x500 [ 22.014007] kunit_kmalloc_array+0x25/0x60 [ 22.014504] copy_user_test_oob+0xab/0x10f0 [ 22.014962] kunit_try_run_case+0x1a5/0x480 [ 22.015411] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.015812] kthread+0x337/0x6f0 [ 22.016207] ret_from_fork+0x41/0x80 [ 22.016527] ret_from_fork_asm+0x1a/0x30 [ 22.016940] [ 22.017173] The buggy address belongs to the object at ffff888101e0b000 [ 22.017173] which belongs to the cache kmalloc-128 of size 128 [ 22.018046] The buggy address is located 0 bytes inside of [ 22.018046] allocated 120-byte region [ffff888101e0b000, ffff888101e0b078) [ 22.019058] [ 22.019245] The buggy address belongs to the physical page: [ 22.019830] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101e0b [ 22.020333] flags: 0x200000000000000(node=0|zone=2) [ 22.020790] page_type: f5(slab) [ 22.020984] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 22.021683] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 22.022179] page dumped because: kasan: bad access detected [ 22.022659] [ 22.022875] Memory state around the buggy address: [ 22.023268] ffff888101e0af00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.023888] ffff888101e0af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.024440] >ffff888101e0b000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 22.025008] ^ [ 22.025474] ffff888101e0b080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.026053] ffff888101e0b100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.026460] ==================================================================