Date
July 10, 2025, 11:10 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.602265] ================================================================== [ 16.603032] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.603796] Write of size 121 at addr ffff888103a2f000 by task kunit_try_catch/303 [ 16.604148] [ 16.604463] CPU: 0 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 16.604670] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.604685] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.604709] Call Trace: [ 16.604724] <TASK> [ 16.604746] dump_stack_lvl+0x73/0xb0 [ 16.604781] print_report+0xd1/0x650 [ 16.604807] ? __virt_addr_valid+0x1db/0x2d0 [ 16.604833] ? _copy_from_user+0x32/0x90 [ 16.604853] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.604879] ? _copy_from_user+0x32/0x90 [ 16.604900] kasan_report+0x141/0x180 [ 16.604922] ? _copy_from_user+0x32/0x90 [ 16.604947] kasan_check_range+0x10c/0x1c0 [ 16.604972] __kasan_check_write+0x18/0x20 [ 16.604993] _copy_from_user+0x32/0x90 [ 16.605015] copy_user_test_oob+0x2be/0x10f0 [ 16.605042] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.605067] ? finish_task_switch.isra.0+0x153/0x700 [ 16.605092] ? __switch_to+0x47/0xf50 [ 16.605119] ? __schedule+0x10cc/0x2b60 [ 16.605143] ? __pfx_read_tsc+0x10/0x10 [ 16.605166] ? ktime_get_ts64+0x86/0x230 [ 16.605192] kunit_try_run_case+0x1a5/0x480 [ 16.605217] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.605241] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.605266] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.605292] ? __kthread_parkme+0x82/0x180 [ 16.605315] ? preempt_count_sub+0x50/0x80 [ 16.605446] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.605480] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.605508] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.605535] kthread+0x337/0x6f0 [ 16.605555] ? trace_preempt_on+0x20/0xc0 [ 16.605581] ? __pfx_kthread+0x10/0x10 [ 16.605603] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.605627] ? calculate_sigpending+0x7b/0xa0 [ 16.605653] ? __pfx_kthread+0x10/0x10 [ 16.605676] ret_from_fork+0x116/0x1d0 [ 16.605696] ? __pfx_kthread+0x10/0x10 [ 16.605718] ret_from_fork_asm+0x1a/0x30 [ 16.605750] </TASK> [ 16.605763] [ 16.617446] Allocated by task 303: [ 16.617843] kasan_save_stack+0x45/0x70 [ 16.618309] kasan_save_track+0x18/0x40 [ 16.618868] kasan_save_alloc_info+0x3b/0x50 [ 16.619417] __kasan_kmalloc+0xb7/0xc0 [ 16.619567] __kmalloc_noprof+0x1c9/0x500 [ 16.619983] kunit_kmalloc_array+0x25/0x60 [ 16.620192] copy_user_test_oob+0xab/0x10f0 [ 16.620644] kunit_try_run_case+0x1a5/0x480 [ 16.620858] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.621191] kthread+0x337/0x6f0 [ 16.621321] ret_from_fork+0x116/0x1d0 [ 16.621607] ret_from_fork_asm+0x1a/0x30 [ 16.622113] [ 16.622211] The buggy address belongs to the object at ffff888103a2f000 [ 16.622211] which belongs to the cache kmalloc-128 of size 128 [ 16.622990] The buggy address is located 0 bytes inside of [ 16.622990] allocated 120-byte region [ffff888103a2f000, ffff888103a2f078) [ 16.623794] [ 16.624009] The buggy address belongs to the physical page: [ 16.624223] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a2f [ 16.624805] flags: 0x200000000000000(node=0|zone=2) [ 16.625149] page_type: f5(slab) [ 16.625490] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.625998] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.626467] page dumped because: kasan: bad access detected [ 16.626913] [ 16.627006] Memory state around the buggy address: [ 16.627235] ffff888103a2ef00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.627801] ffff888103a2ef80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.628117] >ffff888103a2f000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.628768] ^ [ 16.629185] ffff888103a2f080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.629772] ffff888103a2f100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.630234] ==================================================================