Date
Dec. 6, 2024, 3:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 34.200195] ================================================================== [ 34.200952] BUG: KASAN: slab-use-after-free in kasan_strings+0x838/0x8d8 [ 34.201745] Read of size 1 at addr fff00000c69e4d10 by task kunit_try_catch/248 [ 34.202998] [ 34.203360] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241206 #1 [ 34.204234] Tainted: [B]=BAD_PAGE, [N]=TEST [ 34.204886] Hardware name: linux,dummy-virt (DT) [ 34.205498] Call trace: [ 34.205910] show_stack+0x20/0x38 (C) [ 34.206872] dump_stack_lvl+0x8c/0xd0 [ 34.207548] print_report+0x118/0x5e0 [ 34.208147] kasan_report+0xc8/0x118 [ 34.208748] __asan_report_load1_noabort+0x20/0x30 [ 34.209525] kasan_strings+0x838/0x8d8 [ 34.210147] kunit_try_run_case+0x14c/0x3d0 [ 34.211004] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.211814] kthread+0x24c/0x2d0 [ 34.212421] ret_from_fork+0x10/0x20 [ 34.213040] [ 34.213423] Allocated by task 248: [ 34.213965] kasan_save_stack+0x3c/0x68 [ 34.214822] kasan_save_track+0x20/0x40 [ 34.215610] kasan_save_alloc_info+0x40/0x58 [ 34.216288] __kasan_kmalloc+0xd4/0xd8 [ 34.217001] __kmalloc_cache_noprof+0x15c/0x3c0 [ 34.217786] kasan_strings+0xb0/0x8d8 [ 34.218593] kunit_try_run_case+0x14c/0x3d0 [ 34.219294] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.220210] kthread+0x24c/0x2d0 [ 34.220804] ret_from_fork+0x10/0x20 [ 34.221639] [ 34.222350] Freed by task 248: [ 34.223044] kasan_save_stack+0x3c/0x68 [ 34.223782] kasan_save_track+0x20/0x40 [ 34.224290] kasan_save_free_info+0x4c/0x78 [ 34.224979] __kasan_slab_free+0x6c/0x98 [ 34.225551] kfree+0x114/0x3c8 [ 34.226046] kasan_strings+0x124/0x8d8 [ 34.226574] kunit_try_run_case+0x14c/0x3d0 [ 34.227343] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.228265] kthread+0x24c/0x2d0 [ 34.228955] ret_from_fork+0x10/0x20 [ 34.229554] [ 34.229940] The buggy address belongs to the object at fff00000c69e4d00 [ 34.229940] which belongs to the cache kmalloc-32 of size 32 [ 34.231676] The buggy address is located 16 bytes inside of [ 34.231676] freed 32-byte region [fff00000c69e4d00, fff00000c69e4d20) [ 34.232759] [ 34.233139] The buggy address belongs to the physical page: [ 34.233801] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1069e4 [ 34.234897] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.235713] page_type: f5(slab) [ 34.236263] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 34.237199] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 34.238178] page dumped because: kasan: bad access detected [ 34.239106] [ 34.239454] Memory state around the buggy address: [ 34.240112] fff00000c69e4c00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 34.241965] fff00000c69e4c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 34.243069] >fff00000c69e4d00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 34.243872] ^ [ 34.244365] fff00000c69e4d80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 34.245604] fff00000c69e4e00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 34.246618] ==================================================================
[ 27.141250] ================================================================== [ 27.141914] BUG: KASAN: slab-use-after-free in kasan_strings+0xa0c/0xb60 [ 27.144474] Read of size 1 at addr ffff888102481690 by task kunit_try_catch/267 [ 27.145018] [ 27.145238] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241206 #1 [ 27.146313] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.146602] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.148372] Call Trace: [ 27.148611] <TASK> [ 27.149218] dump_stack_lvl+0x73/0xb0 [ 27.149682] print_report+0xd1/0x640 [ 27.150279] ? __virt_addr_valid+0x1db/0x2d0 [ 27.150594] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.152071] kasan_report+0x102/0x140 [ 27.152473] ? kasan_strings+0xa0c/0xb60 [ 27.152802] ? kasan_strings+0xa0c/0xb60 [ 27.153747] __asan_report_load1_noabort+0x18/0x20 [ 27.154167] kasan_strings+0xa0c/0xb60 [ 27.155205] ? __pfx_kasan_strings+0x10/0x10 [ 27.155951] ? __schedule+0xc70/0x27e0 [ 27.156273] ? __pfx_read_tsc+0x10/0x10 [ 27.157314] ? ktime_get_ts64+0x86/0x230 [ 27.157663] kunit_try_run_case+0x1b3/0x490 [ 27.159041] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.160231] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 27.160660] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.161681] ? __kthread_parkme+0x82/0x160 [ 27.162150] ? preempt_count_sub+0x50/0x80 [ 27.162583] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.163066] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.164658] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.165155] kthread+0x257/0x310 [ 27.165581] ? __pfx_kthread+0x10/0x10 [ 27.167128] ret_from_fork+0x41/0x80 [ 27.168215] ? __pfx_kthread+0x10/0x10 [ 27.169106] ret_from_fork_asm+0x1a/0x30 [ 27.169989] </TASK> [ 27.170177] [ 27.170764] Allocated by task 267: [ 27.171278] kasan_save_stack+0x3d/0x60 [ 27.171919] kasan_save_track+0x18/0x40 [ 27.172705] kasan_save_alloc_info+0x3b/0x50 [ 27.173174] __kasan_kmalloc+0xb7/0xc0 [ 27.173562] __kmalloc_cache_noprof+0x184/0x410 [ 27.175410] kasan_strings+0xb9/0xb60 [ 27.175788] kunit_try_run_case+0x1b3/0x490 [ 27.176993] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.178197] kthread+0x257/0x310 [ 27.178781] ret_from_fork+0x41/0x80 [ 27.180195] ret_from_fork_asm+0x1a/0x30 [ 27.180604] [ 27.180862] Freed by task 267: [ 27.181427] kasan_save_stack+0x3d/0x60 [ 27.182539] kasan_save_track+0x18/0x40 [ 27.183369] kasan_save_free_info+0x3f/0x60 [ 27.183882] __kasan_slab_free+0x56/0x70 [ 27.184983] kfree+0x123/0x3f0 [ 27.186013] kasan_strings+0x13c/0xb60 [ 27.186902] kunit_try_run_case+0x1b3/0x490 [ 27.187338] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.187901] kthread+0x257/0x310 [ 27.188919] ret_from_fork+0x41/0x80 [ 27.189407] ret_from_fork_asm+0x1a/0x30 [ 27.190032] [ 27.190630] The buggy address belongs to the object at ffff888102481680 [ 27.190630] which belongs to the cache kmalloc-32 of size 32 [ 27.192591] The buggy address is located 16 bytes inside of [ 27.192591] freed 32-byte region [ffff888102481680, ffff8881024816a0) [ 27.194255] [ 27.194636] The buggy address belongs to the physical page: [ 27.195319] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102481 [ 27.196294] flags: 0x200000000000000(node=0|zone=2) [ 27.197014] page_type: f5(slab) [ 27.198280] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 27.199386] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 27.200620] page dumped because: kasan: bad access detected [ 27.201082] [ 27.201456] Memory state around the buggy address: [ 27.202794] ffff888102481580: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 27.203369] ffff888102481600: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 27.204050] >ffff888102481680: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.205792] ^ [ 27.206103] ffff888102481700: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 27.206953] ffff888102481780: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.208352] ==================================================================