Date
Nov. 22, 2024, 6:35 a.m.
Environment | |
---|---|
qemu-x86_64 |
[ 32.150173] ================================================================== [ 32.151069] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x33/0xa0 [ 32.151804] Write of size 121 at addr ffff888101ac2800 by task kunit_try_catch/293 [ 32.152243] [ 32.152495] CPU: 0 UID: 0 PID: 293 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241122 #1 [ 32.153287] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.153734] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 32.154256] Call Trace: [ 32.154473] <TASK> [ 32.154673] dump_stack_lvl+0x73/0xb0 [ 32.155142] print_report+0xd1/0x640 [ 32.155617] ? __virt_addr_valid+0x1db/0x2d0 [ 32.156114] ? kasan_complete_mode_report_info+0x2a/0x200 [ 32.156668] kasan_report+0x102/0x140 [ 32.157448] ? _copy_from_user+0x33/0xa0 [ 32.159037] ? _copy_from_user+0x33/0xa0 [ 32.159561] kasan_check_range+0x10c/0x1c0 [ 32.160049] __kasan_check_write+0x18/0x20 [ 32.160961] _copy_from_user+0x33/0xa0 [ 32.161974] copy_user_test_oob+0x2bf/0x10f0 [ 32.162740] ? __pfx_copy_user_test_oob+0x10/0x10 [ 32.163165] ? finish_task_switch.isra.0+0x153/0x700 [ 32.163929] ? __switch_to+0x5d9/0xf60 [ 32.164191] ? irqentry_exit+0x2a/0x60 [ 32.164904] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 32.165437] ? trace_hardirqs_on+0x37/0xe0 [ 32.165910] ? __pfx_read_tsc+0x10/0x10 [ 32.166496] ? ktime_get_ts64+0x84/0x230 [ 32.166905] kunit_try_run_case+0x1b3/0x490 [ 32.167906] ? __pfx_kunit_try_run_case+0x10/0x10 [ 32.168499] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 32.169040] ? _raw_spin_unlock_irqrestore+0x49/0x90 [ 32.169623] ? _raw_spin_unlock_irqrestore+0x49/0x90 [ 32.170124] ? __pfx_kunit_try_run_case+0x10/0x10 [ 32.170653] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 32.171293] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 32.171923] kthread+0x257/0x310 [ 32.172208] ? __pfx_kthread+0x10/0x10 [ 32.172520] ret_from_fork+0x41/0x80 [ 32.173028] ? __pfx_kthread+0x10/0x10 [ 32.173441] ret_from_fork_asm+0x1a/0x30 [ 32.174075] </TASK> [ 32.174321] [ 32.174555] Allocated by task 293: [ 32.175089] kasan_save_stack+0x3d/0x60 [ 32.175530] kasan_save_track+0x18/0x40 [ 32.176024] kasan_save_alloc_info+0x3b/0x50 [ 32.176317] __kasan_kmalloc+0xb7/0xc0 [ 32.177041] __kmalloc_noprof+0x1c4/0x500 [ 32.177590] kunit_kmalloc_array+0x25/0x60 [ 32.178183] copy_user_test_oob+0xac/0x10f0 [ 32.178628] kunit_try_run_case+0x1b3/0x490 [ 32.179076] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 32.179595] kthread+0x257/0x310 [ 32.180020] ret_from_fork+0x41/0x80 [ 32.180539] ret_from_fork_asm+0x1a/0x30 [ 32.181065] [ 32.181330] The buggy address belongs to the object at ffff888101ac2800 [ 32.181330] which belongs to the cache kmalloc-128 of size 128 [ 32.182426] The buggy address is located 0 bytes inside of [ 32.182426] allocated 120-byte region [ffff888101ac2800, ffff888101ac2878) [ 32.183379] [ 32.183552] The buggy address belongs to the physical page: [ 32.183999] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ac2 [ 32.184846] flags: 0x200000000000000(node=0|zone=2) [ 32.185428] page_type: f5(slab) [ 32.185871] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 32.186503] raw: 0000000000000000 0000000080100010 00000001f5000000 0000000000000000 [ 32.187161] page dumped because: kasan: bad access detected [ 32.187798] [ 32.188113] Memory state around the buggy address: [ 32.188571] ffff888101ac2700: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.189234] ffff888101ac2780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.189849] >ffff888101ac2800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 32.190623] ^ [ 32.191197] ffff888101ac2880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.191797] ffff888101ac2900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.192613] ==================================================================