Date
Dec. 6, 2024, 3:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 34.249714] ================================================================== [ 34.250982] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 34.251738] Read of size 1 at addr fff00000c69e4d10 by task kunit_try_catch/248 [ 34.252505] [ 34.253459] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241206 #1 [ 34.254641] Tainted: [B]=BAD_PAGE, [N]=TEST [ 34.255128] Hardware name: linux,dummy-virt (DT) [ 34.255758] Call trace: [ 34.256227] show_stack+0x20/0x38 (C) [ 34.256895] dump_stack_lvl+0x8c/0xd0 [ 34.257556] print_report+0x118/0x5e0 [ 34.258158] kasan_report+0xc8/0x118 [ 34.259127] __asan_report_load1_noabort+0x20/0x30 [ 34.259889] strlen+0xa8/0xb0 [ 34.260257] kasan_strings+0x304/0x8d8 [ 34.260924] kunit_try_run_case+0x14c/0x3d0 [ 34.261569] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.262624] kthread+0x24c/0x2d0 [ 34.263394] ret_from_fork+0x10/0x20 [ 34.264010] [ 34.264367] Allocated by task 248: [ 34.264825] kasan_save_stack+0x3c/0x68 [ 34.265466] kasan_save_track+0x20/0x40 [ 34.266007] kasan_save_alloc_info+0x40/0x58 [ 34.266911] __kasan_kmalloc+0xd4/0xd8 [ 34.267874] __kmalloc_cache_noprof+0x15c/0x3c0 [ 34.268844] kasan_strings+0xb0/0x8d8 [ 34.269722] kunit_try_run_case+0x14c/0x3d0 [ 34.270142] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.271185] kthread+0x24c/0x2d0 [ 34.271764] ret_from_fork+0x10/0x20 [ 34.272269] [ 34.272641] Freed by task 248: [ 34.273165] kasan_save_stack+0x3c/0x68 [ 34.273822] kasan_save_track+0x20/0x40 [ 34.274767] kasan_save_free_info+0x4c/0x78 [ 34.275410] __kasan_slab_free+0x6c/0x98 [ 34.275967] kfree+0x114/0x3c8 [ 34.276548] kasan_strings+0x124/0x8d8 [ 34.277165] kunit_try_run_case+0x14c/0x3d0 [ 34.277842] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.278492] kthread+0x24c/0x2d0 [ 34.279101] ret_from_fork+0x10/0x20 [ 34.279731] [ 34.280101] The buggy address belongs to the object at fff00000c69e4d00 [ 34.280101] which belongs to the cache kmalloc-32 of size 32 [ 34.281472] The buggy address is located 16 bytes inside of [ 34.281472] freed 32-byte region [fff00000c69e4d00, fff00000c69e4d20) [ 34.283010] [ 34.283385] The buggy address belongs to the physical page: [ 34.284034] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1069e4 [ 34.285176] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.286006] page_type: f5(slab) [ 34.287173] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 34.288677] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 34.289549] page dumped because: kasan: bad access detected [ 34.290227] [ 34.290590] Memory state around the buggy address: [ 34.291289] fff00000c69e4c00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 34.292390] fff00000c69e4c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 34.293224] >fff00000c69e4d00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 34.294501] ^ [ 34.295108] fff00000c69e4d80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 34.296014] fff00000c69e4e00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 34.296943] ==================================================================
[ 27.210483] ================================================================== [ 27.212244] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 27.212843] Read of size 1 at addr ffff888102481690 by task kunit_try_catch/267 [ 27.214544] [ 27.214711] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241206 #1 [ 27.215506] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.216271] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.216990] Call Trace: [ 27.217963] <TASK> [ 27.218672] dump_stack_lvl+0x73/0xb0 [ 27.219860] print_report+0xd1/0x640 [ 27.220901] ? __virt_addr_valid+0x1db/0x2d0 [ 27.221742] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.222136] kasan_report+0x102/0x140 [ 27.223365] ? strlen+0x8f/0xb0 [ 27.223881] ? strlen+0x8f/0xb0 [ 27.224221] __asan_report_load1_noabort+0x18/0x20 [ 27.224646] strlen+0x8f/0xb0 [ 27.225022] kasan_strings+0x425/0xb60 [ 27.226210] ? __pfx_kasan_strings+0x10/0x10 [ 27.226589] ? __schedule+0xc70/0x27e0 [ 27.226910] ? __pfx_read_tsc+0x10/0x10 [ 27.227404] ? ktime_get_ts64+0x86/0x230 [ 27.228556] kunit_try_run_case+0x1b3/0x490 [ 27.229027] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.229625] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 27.230145] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.232070] ? __kthread_parkme+0x82/0x160 [ 27.232534] ? preempt_count_sub+0x50/0x80 [ 27.233157] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.233969] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.235276] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.236430] kthread+0x257/0x310 [ 27.236696] ? __pfx_kthread+0x10/0x10 [ 27.237902] ret_from_fork+0x41/0x80 [ 27.238375] ? __pfx_kthread+0x10/0x10 [ 27.238759] ret_from_fork_asm+0x1a/0x30 [ 27.239218] </TASK> [ 27.239515] [ 27.239698] Allocated by task 267: [ 27.241489] kasan_save_stack+0x3d/0x60 [ 27.241886] kasan_save_track+0x18/0x40 [ 27.242825] kasan_save_alloc_info+0x3b/0x50 [ 27.243367] __kasan_kmalloc+0xb7/0xc0 [ 27.244442] __kmalloc_cache_noprof+0x184/0x410 [ 27.245687] kasan_strings+0xb9/0xb60 [ 27.246271] kunit_try_run_case+0x1b3/0x490 [ 27.247390] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.248210] kthread+0x257/0x310 [ 27.248577] ret_from_fork+0x41/0x80 [ 27.248810] ret_from_fork_asm+0x1a/0x30 [ 27.249078] [ 27.249423] Freed by task 267: [ 27.251182] kasan_save_stack+0x3d/0x60 [ 27.251555] kasan_save_track+0x18/0x40 [ 27.252332] kasan_save_free_info+0x3f/0x60 [ 27.252619] __kasan_slab_free+0x56/0x70 [ 27.253107] kfree+0x123/0x3f0 [ 27.253639] kasan_strings+0x13c/0xb60 [ 27.254013] kunit_try_run_case+0x1b3/0x490 [ 27.254521] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.255362] kthread+0x257/0x310 [ 27.256622] ret_from_fork+0x41/0x80 [ 27.257150] ret_from_fork_asm+0x1a/0x30 [ 27.258224] [ 27.258488] The buggy address belongs to the object at ffff888102481680 [ 27.258488] which belongs to the cache kmalloc-32 of size 32 [ 27.259196] The buggy address is located 16 bytes inside of [ 27.259196] freed 32-byte region [ffff888102481680, ffff8881024816a0) [ 27.262208] [ 27.262435] The buggy address belongs to the physical page: [ 27.262789] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102481 [ 27.264723] flags: 0x200000000000000(node=0|zone=2) [ 27.265215] page_type: f5(slab) [ 27.266466] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 27.267561] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 27.268081] page dumped because: kasan: bad access detected [ 27.269368] [ 27.270149] Memory state around the buggy address: [ 27.271167] ffff888102481580: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 27.272153] ffff888102481600: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 27.273972] >ffff888102481680: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.275046] ^ [ 27.275564] ffff888102481700: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 27.277060] ffff888102481780: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.277796] ==================================================================