Date
Dec. 9, 2024, 6:35 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 32.071659] ================================================================== [ 32.072387] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x4a/0x70 [ 32.072803] Read of size 121 at addr ffff88810296dd00 by task kunit_try_catch/292 [ 32.074606] [ 32.074866] CPU: 0 UID: 0 PID: 292 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc2-next-20241209 #1 [ 32.075747] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.076116] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 32.076907] Call Trace: [ 32.077763] <TASK> [ 32.077987] dump_stack_lvl+0x73/0xb0 [ 32.079000] print_report+0xd1/0x640 [ 32.079650] ? __virt_addr_valid+0x1db/0x2d0 [ 32.080325] ? kasan_complete_mode_report_info+0x2a/0x200 [ 32.081190] kasan_report+0x102/0x140 [ 32.081483] ? _copy_to_user+0x4a/0x70 [ 32.082371] ? _copy_to_user+0x4a/0x70 [ 32.083177] kasan_check_range+0x10c/0x1c0 [ 32.083630] __kasan_check_read+0x15/0x20 [ 32.085107] _copy_to_user+0x4a/0x70 [ 32.085749] copy_user_test_oob+0x365/0x10f0 [ 32.086270] ? __pfx_copy_user_test_oob+0x10/0x10 [ 32.086699] ? finish_task_switch.isra.0+0x153/0x700 [ 32.087557] ? __switch_to+0x5d9/0xf60 [ 32.088174] ? __schedule+0xc70/0x27e0 [ 32.088602] ? __pfx_read_tsc+0x10/0x10 [ 32.089183] ? ktime_get_ts64+0x86/0x230 [ 32.089650] kunit_try_run_case+0x1b3/0x490 [ 32.090199] ? __pfx_kunit_try_run_case+0x10/0x10 [ 32.090679] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 32.091493] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 32.092356] ? __kthread_parkme+0x82/0x160 [ 32.093335] ? preempt_count_sub+0x50/0x80 [ 32.093741] ? __pfx_kunit_try_run_case+0x10/0x10 [ 32.094629] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 32.095323] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 32.096343] kthread+0x257/0x310 [ 32.096742] ? __pfx_kthread+0x10/0x10 [ 32.097405] ret_from_fork+0x41/0x80 [ 32.097802] ? __pfx_kthread+0x10/0x10 [ 32.098462] ret_from_fork_asm+0x1a/0x30 [ 32.099105] </TASK> [ 32.099566] [ 32.100009] Allocated by task 292: [ 32.100341] kasan_save_stack+0x3d/0x60 [ 32.101126] kasan_save_track+0x18/0x40 [ 32.101607] kasan_save_alloc_info+0x3b/0x50 [ 32.102342] __kasan_kmalloc+0xb7/0xc0 [ 32.103240] __kmalloc_noprof+0x1c4/0x500 [ 32.103652] kunit_kmalloc_array+0x25/0x60 [ 32.104244] copy_user_test_oob+0xac/0x10f0 [ 32.105083] kunit_try_run_case+0x1b3/0x490 [ 32.106014] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 32.106802] kthread+0x257/0x310 [ 32.107490] ret_from_fork+0x41/0x80 [ 32.108473] ret_from_fork_asm+0x1a/0x30 [ 32.108952] [ 32.109139] The buggy address belongs to the object at ffff88810296dd00 [ 32.109139] which belongs to the cache kmalloc-128 of size 128 [ 32.110960] The buggy address is located 0 bytes inside of [ 32.110960] allocated 120-byte region [ffff88810296dd00, ffff88810296dd78) [ 32.112353] [ 32.112755] The buggy address belongs to the physical page: [ 32.113081] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10296d [ 32.114171] flags: 0x200000000000000(node=0|zone=2) [ 32.114854] page_type: f5(slab) [ 32.115354] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 32.116394] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 32.117373] page dumped because: kasan: bad access detected [ 32.118318] [ 32.118623] Memory state around the buggy address: [ 32.119660] ffff88810296dc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.120557] ffff88810296dc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.121599] >ffff88810296dd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 32.122593] ^ [ 32.123889] ffff88810296dd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.124411] ffff88810296de00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.125416] ==================================================================