Date
July 1, 2025, 11:08 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 15.443136] ================================================================== [ 15.443814] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90 [ 15.444609] Write of size 121 at addr ffff88810258dd00 by task kunit_try_catch/302 [ 15.445163] [ 15.445298] CPU: 0 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 15.445586] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.445603] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.445630] Call Trace: [ 15.445650] <TASK> [ 15.445676] dump_stack_lvl+0x73/0xb0 [ 15.445712] print_report+0xd1/0x650 [ 15.445739] ? __virt_addr_valid+0x1db/0x2d0 [ 15.445766] ? _copy_from_user+0x32/0x90 [ 15.445786] ? kasan_complete_mode_report_info+0x2a/0x200 [ 15.445809] ? _copy_from_user+0x32/0x90 [ 15.445829] kasan_report+0x141/0x180 [ 15.445852] ? _copy_from_user+0x32/0x90 [ 15.445877] kasan_check_range+0x10c/0x1c0 [ 15.445902] __kasan_check_write+0x18/0x20 [ 15.445923] _copy_from_user+0x32/0x90 [ 15.445945] copy_user_test_oob+0x2be/0x10f0 [ 15.445971] ? __pfx_copy_user_test_oob+0x10/0x10 [ 15.445993] ? finish_task_switch.isra.0+0x153/0x700 [ 15.446020] ? __switch_to+0x47/0xf50 [ 15.446047] ? __schedule+0x10cc/0x2b60 [ 15.446072] ? __pfx_read_tsc+0x10/0x10 [ 15.446095] ? ktime_get_ts64+0x86/0x230 [ 15.446121] kunit_try_run_case+0x1a5/0x480 [ 15.446145] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.446168] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.446193] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.446216] ? __kthread_parkme+0x82/0x180 [ 15.446239] ? preempt_count_sub+0x50/0x80 [ 15.446263] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.446287] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.446311] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.446335] kthread+0x337/0x6f0 [ 15.446355] ? trace_preempt_on+0x20/0xc0 [ 15.446393] ? __pfx_kthread+0x10/0x10 [ 15.446413] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.446435] ? calculate_sigpending+0x7b/0xa0 [ 15.446461] ? __pfx_kthread+0x10/0x10 [ 15.446483] ret_from_fork+0x116/0x1d0 [ 15.446502] ? __pfx_kthread+0x10/0x10 [ 15.446522] ret_from_fork_asm+0x1a/0x30 [ 15.446554] </TASK> [ 15.446568] [ 15.457472] Allocated by task 302: [ 15.457736] kasan_save_stack+0x45/0x70 [ 15.457949] kasan_save_track+0x18/0x40 [ 15.458558] kasan_save_alloc_info+0x3b/0x50 [ 15.458766] __kasan_kmalloc+0xb7/0xc0 [ 15.459198] __kmalloc_noprof+0x1c9/0x500 [ 15.459563] kunit_kmalloc_array+0x25/0x60 [ 15.459762] copy_user_test_oob+0xab/0x10f0 [ 15.460109] kunit_try_run_case+0x1a5/0x480 [ 15.460402] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.460583] kthread+0x337/0x6f0 [ 15.460711] ret_from_fork+0x116/0x1d0 [ 15.460846] ret_from_fork_asm+0x1a/0x30 [ 15.461154] [ 15.461260] The buggy address belongs to the object at ffff88810258dd00 [ 15.461260] which belongs to the cache kmalloc-128 of size 128 [ 15.462328] The buggy address is located 0 bytes inside of [ 15.462328] allocated 120-byte region [ffff88810258dd00, ffff88810258dd78) [ 15.463013] [ 15.463270] The buggy address belongs to the physical page: [ 15.463527] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10258d [ 15.464035] flags: 0x200000000000000(node=0|zone=2) [ 15.464399] page_type: f5(slab) [ 15.464586] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 15.465147] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 15.465523] page dumped because: kasan: bad access detected [ 15.465918] [ 15.466127] Memory state around the buggy address: [ 15.466433] ffff88810258dc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.466813] ffff88810258dc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.467436] >ffff88810258dd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 15.467959] ^ [ 15.468338] ffff88810258dd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.468793] ffff88810258de00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.469304] ==================================================================