Date
July 8, 2025, 11:09 p.m.
Environment | |
---|---|
qemu-x86_64 |
[ 16.439582] ================================================================== [ 16.440440] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 16.440769] Write of size 121 at addr ffff888102675c00 by task kunit_try_catch/303 [ 16.441075] [ 16.441191] CPU: 1 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 16.441243] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.441256] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.441281] Call Trace: [ 16.441296] <TASK> [ 16.441319] dump_stack_lvl+0x73/0xb0 [ 16.441355] print_report+0xd1/0x650 [ 16.441383] ? __virt_addr_valid+0x1db/0x2d0 [ 16.441410] ? _copy_from_user+0x32/0x90 [ 16.441431] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.441457] ? _copy_from_user+0x32/0x90 [ 16.441478] kasan_report+0x141/0x180 [ 16.441777] ? _copy_from_user+0x32/0x90 [ 16.441813] kasan_check_range+0x10c/0x1c0 [ 16.441841] __kasan_check_write+0x18/0x20 [ 16.441862] _copy_from_user+0x32/0x90 [ 16.441884] copy_user_test_oob+0x2be/0x10f0 [ 16.442089] ? __pfx_copy_user_test_oob+0x10/0x10 [ 16.442126] ? finish_task_switch.isra.0+0x153/0x700 [ 16.442155] ? __switch_to+0x47/0xf50 [ 16.442188] ? __schedule+0x10cc/0x2b60 [ 16.442213] ? __pfx_read_tsc+0x10/0x10 [ 16.442237] ? ktime_get_ts64+0x86/0x230 [ 16.442265] kunit_try_run_case+0x1a5/0x480 [ 16.442290] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.442315] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.442342] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.442368] ? __kthread_parkme+0x82/0x180 [ 16.442393] ? preempt_count_sub+0x50/0x80 [ 16.442419] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.442445] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.442473] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.442500] kthread+0x337/0x6f0 [ 16.442519] ? trace_preempt_on+0x20/0xc0 [ 16.442546] ? __pfx_kthread+0x10/0x10 [ 16.442567] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.442590] ? calculate_sigpending+0x7b/0xa0 [ 16.442631] ? __pfx_kthread+0x10/0x10 [ 16.442653] ret_from_fork+0x116/0x1d0 [ 16.442673] ? __pfx_kthread+0x10/0x10 [ 16.442695] ret_from_fork_asm+0x1a/0x30 [ 16.442729] </TASK> [ 16.442743] [ 16.453681] Allocated by task 303: [ 16.453856] kasan_save_stack+0x45/0x70 [ 16.454051] kasan_save_track+0x18/0x40 [ 16.454232] kasan_save_alloc_info+0x3b/0x50 [ 16.454427] __kasan_kmalloc+0xb7/0xc0 [ 16.454861] __kmalloc_noprof+0x1c9/0x500 [ 16.455286] kunit_kmalloc_array+0x25/0x60 [ 16.455558] copy_user_test_oob+0xab/0x10f0 [ 16.455982] kunit_try_run_case+0x1a5/0x480 [ 16.456209] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.456451] kthread+0x337/0x6f0 [ 16.456851] ret_from_fork+0x116/0x1d0 [ 16.457158] ret_from_fork_asm+0x1a/0x30 [ 16.457557] [ 16.457666] The buggy address belongs to the object at ffff888102675c00 [ 16.457666] which belongs to the cache kmalloc-128 of size 128 [ 16.458166] The buggy address is located 0 bytes inside of [ 16.458166] allocated 120-byte region [ffff888102675c00, ffff888102675c78) [ 16.458970] [ 16.459220] The buggy address belongs to the physical page: [ 16.459676] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102675 [ 16.460188] flags: 0x200000000000000(node=0|zone=2) [ 16.460623] page_type: f5(slab) [ 16.460908] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 16.461237] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 16.461803] page dumped because: kasan: bad access detected [ 16.462084] [ 16.462309] Memory state around the buggy address: [ 16.462771] ffff888102675b00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.463084] ffff888102675b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.463379] >ffff888102675c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 16.463995] ^ [ 16.464430] ffff888102675c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.464983] ffff888102675d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.465292] ==================================================================