Date
June 2, 2025, 2:13 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.729518] ================================================================== [ 16.730192] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.730487] Write of size 121 at addr ffff888102a2cf00 by task kunit_try_catch/293 [ 16.730847] [ 16.731067] CPU: 0 UID: 0 PID: 293 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 16.731117] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.731129] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.731153] Call Trace: [ 16.731166] <TASK> [ 16.731185] dump_stack_lvl+0x73/0xb0 [ 16.731219] print_report+0xd1/0x650 [ 16.731262] ? __virt_addr_valid+0x1db/0x2d0 [ 16.731294] ? _copy_from_user+0x32/0x90 [ 16.731331] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.731364] ? _copy_from_user+0x32/0x90 [ 16.731390] kasan_report+0x140/0x180 [ 16.731416] ? _copy_from_user+0x32/0x90 [ 16.731445] kasan_check_range+0x10c/0x1c0 [ 16.731473] __kasan_check_write+0x18/0x20 [ 16.731501] _copy_from_user+0x32/0x90 [ 16.731536] copy_user_test_oob+0x2bf/0x10f0 [ 16.731566] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.731603] ? finish_task_switch.isra.0+0x153/0x700 [ 16.731632] ? __switch_to+0x5d9/0xf60 [ 16.731664] ? __schedule+0xce8/0x2840 [ 16.731693] ? __pfx_read_tsc+0x10/0x10 [ 16.731814] ? ktime_get_ts64+0x86/0x230 [ 16.731850] kunit_try_run_case+0x1a6/0x480 [ 16.731878] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.731904] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 16.731934] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.731962] ? __kthread_parkme+0x82/0x160 [ 16.731989] ? preempt_count_sub+0x50/0x80 [ 16.732028] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.732056] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.732088] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.732118] kthread+0x324/0x6e0 [ 16.732144] ? trace_preempt_on+0x20/0xc0 [ 16.732174] ? __pfx_kthread+0x10/0x10 [ 16.732201] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.732229] ? calculate_sigpending+0x7b/0xa0 [ 16.732256] ? __pfx_kthread+0x10/0x10 [ 16.732283] ret_from_fork+0x41/0x80 [ 16.732307] ? __pfx_kthread+0x10/0x10 [ 16.732334] ret_from_fork_asm+0x1a/0x30 [ 16.732369] </TASK> [ 16.732382] [ 16.743749] Allocated by task 293: [ 16.743943] kasan_save_stack+0x45/0x70 [ 16.744385] kasan_save_track+0x18/0x40 [ 16.744749] kasan_save_alloc_info+0x3b/0x50 [ 16.744989] __kasan_kmalloc+0xb7/0xc0 [ 16.745269] __kmalloc_noprof+0x1ca/0x500 [ 16.745637] kunit_kmalloc_array+0x25/0x60 [ 16.745921] copy_user_test_oob+0xac/0x10f0 [ 16.746371] kunit_try_run_case+0x1a6/0x480 [ 16.746574] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.747031] kthread+0x324/0x6e0 [ 16.747256] ret_from_fork+0x41/0x80 [ 16.747591] ret_from_fork_asm+0x1a/0x30 [ 16.747811] [ 16.747888] The buggy address belongs to the object at ffff888102a2cf00 [ 16.747888] which belongs to the cache kmalloc-128 of size 128 [ 16.748884] The buggy address is located 0 bytes inside of [ 16.748884] allocated 120-byte region [ffff888102a2cf00, ffff888102a2cf78) [ 16.749598] [ 16.749705] The buggy address belongs to the physical page: [ 16.750133] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a2c [ 16.750680] flags: 0x200000000000000(node=0|zone=2) [ 16.750992] page_type: f5(slab) [ 16.751168] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.751457] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.751989] page dumped because: kasan: bad access detected [ 16.752226] [ 16.752328] Memory state around the buggy address: [ 16.752778] ffff888102a2ce00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.753162] ffff888102a2ce80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.753575] >ffff888102a2cf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.754102] ^ [ 16.754532] ffff888102a2cf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.754983] ffff888102a2d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.755413] ==================================================================