Date
July 5, 2025, 11:09 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 18.352998] ================================================================== [ 18.355602] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 18.357787] Write of size 121 at addr ffff888103332c00 by task kunit_try_catch/303 [ 18.359495] [ 18.359958] CPU: 1 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 18.360032] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.360052] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 18.360233] Call Trace: [ 18.360264] <TASK> [ 18.360296] dump_stack_lvl+0x73/0xb0 [ 18.360345] print_report+0xd1/0x650 [ 18.360377] ? __virt_addr_valid+0x1db/0x2d0 [ 18.360410] ? _copy_from_user+0x32/0x90 [ 18.360435] ? kasan_complete_mode_report_info+0x2a/0x200 [ 18.360463] ? _copy_from_user+0x32/0x90 [ 18.360488] kasan_report+0x141/0x180 [ 18.360516] ? _copy_from_user+0x32/0x90 [ 18.360545] kasan_check_range+0x10c/0x1c0 [ 18.360575] __kasan_check_write+0x18/0x20 [ 18.360601] _copy_from_user+0x32/0x90 [ 18.360628] copy_user_test_oob+0x2be/0x10f0 [ 18.360675] ? __pfx_copy_user_test_oob+0x10/0x10 [ 18.360704] ? finish_task_switch.isra.0+0x153/0x700 [ 18.360733] ? __switch_to+0x47/0xf50 [ 18.360794] ? __schedule+0x10cc/0x2b60 [ 18.360822] ? __pfx_read_tsc+0x10/0x10 [ 18.360851] ? ktime_get_ts64+0x86/0x230 [ 18.360886] kunit_try_run_case+0x1a5/0x480 [ 18.360917] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.360945] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 18.360976] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 18.361005] ? __kthread_parkme+0x82/0x180 [ 18.361033] ? preempt_count_sub+0x50/0x80 [ 18.361062] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.361092] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.361121] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 18.361151] kthread+0x337/0x6f0 [ 18.361177] ? trace_preempt_on+0x20/0xc0 [ 18.361208] ? __pfx_kthread+0x10/0x10 [ 18.361234] ? _raw_spin_unlock_irq+0x47/0x80 [ 18.361260] ? calculate_sigpending+0x7b/0xa0 [ 18.361292] ? __pfx_kthread+0x10/0x10 [ 18.361319] ret_from_fork+0x116/0x1d0 [ 18.361343] ? __pfx_kthread+0x10/0x10 [ 18.361370] ret_from_fork_asm+0x1a/0x30 [ 18.361410] </TASK> [ 18.361428] [ 18.377439] Allocated by task 303: [ 18.377632] kasan_save_stack+0x45/0x70 [ 18.377842] kasan_save_track+0x18/0x40 [ 18.378010] kasan_save_alloc_info+0x3b/0x50 [ 18.378436] __kasan_kmalloc+0xb7/0xc0 [ 18.378893] __kmalloc_noprof+0x1c9/0x500 [ 18.379321] kunit_kmalloc_array+0x25/0x60 [ 18.379761] copy_user_test_oob+0xab/0x10f0 [ 18.380270] kunit_try_run_case+0x1a5/0x480 [ 18.380746] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.381312] kthread+0x337/0x6f0 [ 18.381615] ret_from_fork+0x116/0x1d0 [ 18.381814] ret_from_fork_asm+0x1a/0x30 [ 18.382234] [ 18.382435] The buggy address belongs to the object at ffff888103332c00 [ 18.382435] which belongs to the cache kmalloc-128 of size 128 [ 18.383383] The buggy address is located 0 bytes inside of [ 18.383383] allocated 120-byte region [ffff888103332c00, ffff888103332c78) [ 18.383891] [ 18.383998] The buggy address belongs to the physical page: [ 18.384269] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103332 [ 18.384666] flags: 0x200000000000000(node=0|zone=2) [ 18.384956] page_type: f5(slab) [ 18.385162] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 18.385530] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 18.385827] page dumped because: kasan: bad access detected [ 18.386135] [ 18.386331] Memory state around the buggy address: [ 18.386571] ffff888103332b00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.386998] ffff888103332b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.387326] >ffff888103332c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 18.387683] ^ [ 18.388049] ffff888103332c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.388379] ffff888103332d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.388688] ==================================================================