Date
Nov. 22, 2024, 6:35 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 32.200328] ================================================================== [ 32.200930] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x4a/0x70 [ 32.201590] Read of size 121 at addr ffff888101ac2800 by task kunit_try_catch/293 [ 32.202198] [ 32.202485] CPU: 0 UID: 0 PID: 293 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241122 #1 [ 32.203218] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.203708] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 32.204294] Call Trace: [ 32.204698] <TASK> [ 32.205073] dump_stack_lvl+0x73/0xb0 [ 32.205464] print_report+0xd1/0x640 [ 32.205862] ? __virt_addr_valid+0x1db/0x2d0 [ 32.206536] ? kasan_complete_mode_report_info+0x2a/0x200 [ 32.207103] kasan_report+0x102/0x140 [ 32.207616] ? _copy_to_user+0x4a/0x70 [ 32.208050] ? _copy_to_user+0x4a/0x70 [ 32.208454] kasan_check_range+0x10c/0x1c0 [ 32.209034] __kasan_check_read+0x15/0x20 [ 32.209484] _copy_to_user+0x4a/0x70 [ 32.210000] copy_user_test_oob+0x365/0x10f0 [ 32.210615] ? __pfx_copy_user_test_oob+0x10/0x10 [ 32.211079] ? finish_task_switch.isra.0+0x153/0x700 [ 32.211704] ? __switch_to+0x5d9/0xf60 [ 32.212249] ? irqentry_exit+0x2a/0x60 [ 32.212670] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 32.213259] ? trace_hardirqs_on+0x37/0xe0 [ 32.213974] ? __pfx_read_tsc+0x10/0x10 [ 32.214286] ? ktime_get_ts64+0x84/0x230 [ 32.214862] kunit_try_run_case+0x1b3/0x490 [ 32.215347] ? __pfx_kunit_try_run_case+0x10/0x10 [ 32.215753] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 32.216372] ? _raw_spin_unlock_irqrestore+0x49/0x90 [ 32.216848] ? _raw_spin_unlock_irqrestore+0x49/0x90 [ 32.217317] ? __pfx_kunit_try_run_case+0x10/0x10 [ 32.217877] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 32.218255] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 32.218595] kthread+0x257/0x310 [ 32.218973] ? __pfx_kthread+0x10/0x10 [ 32.219464] ret_from_fork+0x41/0x80 [ 32.219902] ? __pfx_kthread+0x10/0x10 [ 32.220333] ret_from_fork_asm+0x1a/0x30 [ 32.220800] </TASK> [ 32.221099] [ 32.221334] Allocated by task 293: [ 32.221760] kasan_save_stack+0x3d/0x60 [ 32.222268] kasan_save_track+0x18/0x40 [ 32.222644] kasan_save_alloc_info+0x3b/0x50 [ 32.223149] __kasan_kmalloc+0xb7/0xc0 [ 32.223521] __kmalloc_noprof+0x1c4/0x500 [ 32.223794] kunit_kmalloc_array+0x25/0x60 [ 32.224251] copy_user_test_oob+0xac/0x10f0 [ 32.224932] kunit_try_run_case+0x1b3/0x490 [ 32.225415] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 32.225951] kthread+0x257/0x310 [ 32.226408] ret_from_fork+0x41/0x80 [ 32.226882] ret_from_fork_asm+0x1a/0x30 [ 32.227252] [ 32.227507] The buggy address belongs to the object at ffff888101ac2800 [ 32.227507] which belongs to the cache kmalloc-128 of size 128 [ 32.228614] The buggy address is located 0 bytes inside of [ 32.228614] allocated 120-byte region [ffff888101ac2800, ffff888101ac2878) [ 32.229413] [ 32.229637] The buggy address belongs to the physical page: [ 32.230171] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ac2 [ 32.231141] flags: 0x200000000000000(node=0|zone=2) [ 32.231737] page_type: f5(slab) [ 32.232132] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 32.233021] raw: 0000000000000000 0000000080100010 00000001f5000000 0000000000000000 [ 32.233564] page dumped because: kasan: bad access detected [ 32.234129] [ 32.234439] Memory state around the buggy address: [ 32.235044] ffff888101ac2700: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.235410] ffff888101ac2780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.236407] >ffff888101ac2800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 32.237003] ^ [ 32.237769] ffff888101ac2880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.238545] ffff888101ac2900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.239127] ==================================================================