Date
Dec. 5, 2024, 2:07 p.m.
| Environment | |
|---|---|
| qemu-x86_64 |
[ 35.199576] ================================================================== [ 35.200424] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x4a/0x70 [ 35.201184] Read of size 121 at addr ffff888101ac8600 by task kunit_try_catch/292 [ 35.203549] [ 35.203939] CPU: 0 UID: 0 PID: 292 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 35.204806] Tainted: [B]=BAD_PAGE, [N]=TEST [ 35.205144] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 35.206179] Call Trace: [ 35.206596] <TASK> [ 35.206981] dump_stack_lvl+0x73/0xb0 [ 35.207372] print_report+0xd1/0x640 [ 35.207972] ? __virt_addr_valid+0x1db/0x2d0 [ 35.208477] ? kasan_complete_mode_report_info+0x2a/0x200 [ 35.209116] kasan_report+0x102/0x140 [ 35.209659] ? _copy_to_user+0x4a/0x70 [ 35.210089] ? _copy_to_user+0x4a/0x70 [ 35.210646] kasan_check_range+0x10c/0x1c0 [ 35.211210] __kasan_check_read+0x15/0x20 [ 35.211814] _copy_to_user+0x4a/0x70 [ 35.212171] copy_user_test_oob+0x365/0x10f0 [ 35.212708] ? __pfx_copy_user_test_oob+0x10/0x10 [ 35.213257] ? finish_task_switch.isra.0+0x153/0x700 [ 35.213746] ? __switch_to+0x5d9/0xf60 [ 35.214161] ? irqentry_exit+0x2a/0x60 [ 35.214697] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 35.215276] ? trace_hardirqs_on+0x37/0xe0 [ 35.215661] ? __pfx_read_tsc+0x10/0x10 [ 35.216171] ? ktime_get_ts64+0x86/0x230 [ 35.216692] kunit_try_run_case+0x1b3/0x490 [ 35.217294] ? __pfx_kunit_try_run_case+0x10/0x10 [ 35.218151] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 35.218700] ? __kthread_parkme+0x82/0x160 [ 35.219214] ? preempt_count_sub+0x50/0x80 [ 35.219845] ? __pfx_kunit_try_run_case+0x10/0x10 [ 35.220440] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 35.221128] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 35.221757] kthread+0x257/0x310 [ 35.222263] ? __pfx_kthread+0x10/0x10 [ 35.222599] ret_from_fork+0x41/0x80 [ 35.223181] ? __pfx_kthread+0x10/0x10 [ 35.223668] ret_from_fork_asm+0x1a/0x30 [ 35.224102] </TASK> [ 35.224499] [ 35.224817] Allocated by task 292: [ 35.225228] kasan_save_stack+0x3d/0x60 [ 35.225726] kasan_save_track+0x18/0x40 [ 35.226182] kasan_save_alloc_info+0x3b/0x50 [ 35.226674] __kasan_kmalloc+0xb7/0xc0 [ 35.227141] __kmalloc_noprof+0x1c4/0x500 [ 35.227724] kunit_kmalloc_array+0x25/0x60 [ 35.228638] copy_user_test_oob+0xac/0x10f0 [ 35.229366] kunit_try_run_case+0x1b3/0x490 [ 35.230180] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 35.230608] kthread+0x257/0x310 [ 35.231087] ret_from_fork+0x41/0x80 [ 35.231401] ret_from_fork_asm+0x1a/0x30 [ 35.231948] [ 35.232225] The buggy address belongs to the object at ffff888101ac8600 [ 35.232225] which belongs to the cache kmalloc-128 of size 128 [ 35.233138] The buggy address is located 0 bytes inside of [ 35.233138] allocated 120-byte region [ffff888101ac8600, ffff888101ac8678) [ 35.234739] [ 35.234950] The buggy address belongs to the physical page: [ 35.235951] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ac8 [ 35.237135] flags: 0x200000000000000(node=0|zone=2) [ 35.237860] page_type: f5(slab) [ 35.238291] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 35.239038] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 35.239614] page dumped because: kasan: bad access detected [ 35.240317] [ 35.240495] Memory state around the buggy address: [ 35.241036] ffff888101ac8500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 35.241667] ffff888101ac8580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 35.242387] >ffff888101ac8600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 35.243069] ^ [ 35.243865] ffff888101ac8680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 35.244574] ffff888101ac8700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 35.245171] ==================================================================