Date
July 15, 2025, 2:09 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 14.835347] ================================================================== [ 14.836614] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 14.837554] Write of size 121 at addr ffff888103a34500 by task kunit_try_catch/304 [ 14.838180] [ 14.838574] CPU: 1 UID: 0 PID: 304 Comm: kunit_try_catch Tainted: G B N 6.15.7-rc1 #1 PREEMPT(voluntary) [ 14.838630] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.838643] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.838666] Call Trace: [ 14.838733] <TASK> [ 14.838752] dump_stack_lvl+0x73/0xb0 [ 14.838782] print_report+0xd1/0x610 [ 14.838825] ? __virt_addr_valid+0x1db/0x2d0 [ 14.838848] ? _copy_from_user+0x32/0x90 [ 14.838869] ? kasan_complete_mode_report_info+0x2a/0x200 [ 14.838905] ? _copy_from_user+0x32/0x90 [ 14.838925] kasan_report+0x141/0x180 [ 14.838948] ? _copy_from_user+0x32/0x90 [ 14.838973] kasan_check_range+0x10c/0x1c0 [ 14.838993] __kasan_check_write+0x18/0x20 [ 14.839013] _copy_from_user+0x32/0x90 [ 14.839035] copy_user_test_oob+0x2be/0x10f0 [ 14.839057] ? __pfx_copy_user_test_oob+0x10/0x10 [ 14.839076] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 14.839103] ? __pfx_copy_user_test_oob+0x10/0x10 [ 14.839128] kunit_try_run_case+0x1a5/0x480 [ 14.839148] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.839167] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.839192] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.839217] ? __kthread_parkme+0x82/0x180 [ 14.839239] ? preempt_count_sub+0x50/0x80 [ 14.839265] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.839286] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.839309] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.839333] kthread+0x337/0x6f0 [ 14.839350] ? trace_preempt_on+0x20/0xc0 [ 14.839375] ? __pfx_kthread+0x10/0x10 [ 14.839393] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.839416] ? calculate_sigpending+0x7b/0xa0 [ 14.839438] ? __pfx_kthread+0x10/0x10 [ 14.839456] ret_from_fork+0x41/0x80 [ 14.839478] ? __pfx_kthread+0x10/0x10 [ 14.839497] ret_from_fork_asm+0x1a/0x30 [ 14.839528] </TASK> [ 14.839541] [ 14.852204] Allocated by task 304: [ 14.852528] kasan_save_stack+0x45/0x70 [ 14.852699] kasan_save_track+0x18/0x40 [ 14.852837] kasan_save_alloc_info+0x3b/0x50 [ 14.853168] __kasan_kmalloc+0xb7/0xc0 [ 14.853564] __kmalloc_noprof+0x1c9/0x500 [ 14.854007] kunit_kmalloc_array+0x25/0x60 [ 14.854358] copy_user_test_oob+0xab/0x10f0 [ 14.854570] kunit_try_run_case+0x1a5/0x480 [ 14.854712] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.854950] kthread+0x337/0x6f0 [ 14.855081] ret_from_fork+0x41/0x80 [ 14.855211] ret_from_fork_asm+0x1a/0x30 [ 14.855346] [ 14.855419] The buggy address belongs to the object at ffff888103a34500 [ 14.855419] which belongs to the cache kmalloc-128 of size 128 [ 14.855857] The buggy address is located 0 bytes inside of [ 14.855857] allocated 120-byte region [ffff888103a34500, ffff888103a34578) [ 14.856309] [ 14.856456] The buggy address belongs to the physical page: [ 14.856703] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a34 [ 14.857037] flags: 0x200000000000000(node=0|zone=2) [ 14.857559] page_type: f5(slab) [ 14.857711] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 14.858281] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 14.858581] page dumped because: kasan: bad access detected [ 14.859147] [ 14.859246] Memory state around the buggy address: [ 14.859459] ffff888103a34400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 14.859949] ffff888103a34480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.860261] >ffff888103a34500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 14.860664] ^ [ 14.861148] ffff888103a34580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.861445] ffff888103a34600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.861739] ==================================================================