Date
Dec. 5, 2024, 2:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.183185] ================================================================== [ 33.184120] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 33.185033] Read of size 1 at addr fff00000c63d1e50 by task kunit_try_catch/248 [ 33.186097] [ 33.186499] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 33.188021] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.188733] Hardware name: linux,dummy-virt (DT) [ 33.189424] Call trace: [ 33.189892] show_stack+0x20/0x38 (C) [ 33.190634] dump_stack_lvl+0x8c/0xd0 [ 33.191281] print_report+0x118/0x5e0 [ 33.191922] kasan_report+0xc8/0x118 [ 33.192549] __asan_report_load1_noabort+0x20/0x30 [ 33.193314] strlen+0xa8/0xb0 [ 33.193901] kasan_strings+0x304/0x8d8 [ 33.194518] kunit_try_run_case+0x14c/0x3d0 [ 33.195230] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.196134] kthread+0x24c/0x2d0 [ 33.196736] ret_from_fork+0x10/0x20 [ 33.197506] [ 33.197822] Allocated by task 248: [ 33.198345] kasan_save_stack+0x3c/0x68 [ 33.199345] kasan_save_track+0x20/0x40 [ 33.199803] kasan_save_alloc_info+0x40/0x58 [ 33.200626] __kasan_kmalloc+0xd4/0xd8 [ 33.201363] __kmalloc_cache_noprof+0x15c/0x3c0 [ 33.202176] kasan_strings+0xb0/0x8d8 [ 33.202928] kunit_try_run_case+0x14c/0x3d0 [ 33.203588] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.204464] kthread+0x24c/0x2d0 [ 33.204988] ret_from_fork+0x10/0x20 [ 33.205511] [ 33.205817] Freed by task 248: [ 33.206774] kasan_save_stack+0x3c/0x68 [ 33.207531] kasan_save_track+0x20/0x40 [ 33.208226] kasan_save_free_info+0x4c/0x78 [ 33.209016] __kasan_slab_free+0x6c/0x98 [ 33.209750] kfree+0x114/0x3c8 [ 33.210437] kasan_strings+0x124/0x8d8 [ 33.211203] kunit_try_run_case+0x14c/0x3d0 [ 33.211798] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.212606] kthread+0x24c/0x2d0 [ 33.213301] ret_from_fork+0x10/0x20 [ 33.213800] [ 33.214214] The buggy address belongs to the object at fff00000c63d1e40 [ 33.214214] which belongs to the cache kmalloc-32 of size 32 [ 33.215527] The buggy address is located 16 bytes inside of [ 33.215527] freed 32-byte region [fff00000c63d1e40, fff00000c63d1e60) [ 33.216938] [ 33.217228] The buggy address belongs to the physical page: [ 33.218066] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1063d1 [ 33.218978] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.219814] page_type: f5(slab) [ 33.220414] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.221382] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 33.222291] page dumped because: kasan: bad access detected [ 33.222983] [ 33.223344] Memory state around the buggy address: [ 33.224082] fff00000c63d1d00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.224943] fff00000c63d1d80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.225829] >fff00000c63d1e00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.226689] ^ [ 33.227351] fff00000c63d1e80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.228351] fff00000c63d1f00: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 33.229177] ==================================================================
[ 31.030634] ================================================================== [ 31.031501] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 31.032324] Read of size 1 at addr ffff888102a07ed0 by task kunit_try_catch/266 [ 31.033542] [ 31.033890] CPU: 1 UID: 0 PID: 266 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 31.035195] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.035612] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 31.036572] Call Trace: [ 31.037082] <TASK> [ 31.037810] dump_stack_lvl+0x73/0xb0 [ 31.038327] print_report+0xd1/0x640 [ 31.038834] ? __virt_addr_valid+0x1db/0x2d0 [ 31.039495] ? kasan_complete_mode_report_info+0x64/0x200 [ 31.040259] kasan_report+0x102/0x140 [ 31.040733] ? strlen+0x8f/0xb0 [ 31.041435] ? strlen+0x8f/0xb0 [ 31.041844] __asan_report_load1_noabort+0x18/0x20 [ 31.042425] strlen+0x8f/0xb0 [ 31.043265] kasan_strings+0x425/0xb60 [ 31.043833] ? __pfx_kasan_strings+0x10/0x10 [ 31.044242] ? __schedule+0xc70/0x27e0 [ 31.044657] ? __pfx_read_tsc+0x10/0x10 [ 31.045488] ? ktime_get_ts64+0x86/0x230 [ 31.046139] kunit_try_run_case+0x1b3/0x490 [ 31.046536] ? __pfx_kunit_try_run_case+0x10/0x10 [ 31.047284] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 31.047867] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 31.048488] ? __kthread_parkme+0x82/0x160 [ 31.049291] ? preempt_count_sub+0x50/0x80 [ 31.049674] ? __pfx_kunit_try_run_case+0x10/0x10 [ 31.050248] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 31.050821] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.051315] kthread+0x257/0x310 [ 31.051747] ? __pfx_kthread+0x10/0x10 [ 31.052085] ret_from_fork+0x41/0x80 [ 31.052536] ? __pfx_kthread+0x10/0x10 [ 31.053418] ret_from_fork_asm+0x1a/0x30 [ 31.053917] </TASK> [ 31.054391] [ 31.054610] Allocated by task 266: [ 31.055151] kasan_save_stack+0x3d/0x60 [ 31.055477] kasan_save_track+0x18/0x40 [ 31.056115] kasan_save_alloc_info+0x3b/0x50 [ 31.056493] __kasan_kmalloc+0xb7/0xc0 [ 31.057290] __kmalloc_cache_noprof+0x184/0x410 [ 31.057742] kasan_strings+0xb9/0xb60 [ 31.058349] kunit_try_run_case+0x1b3/0x490 [ 31.058733] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.059329] kthread+0x257/0x310 [ 31.059624] ret_from_fork+0x41/0x80 [ 31.060132] ret_from_fork_asm+0x1a/0x30 [ 31.060654] [ 31.060927] Freed by task 266: [ 31.061518] kasan_save_stack+0x3d/0x60 [ 31.061909] kasan_save_track+0x18/0x40 [ 31.062510] kasan_save_free_info+0x3f/0x60 [ 31.063179] __kasan_slab_free+0x56/0x70 [ 31.063601] kfree+0x123/0x3f0 [ 31.064043] kasan_strings+0x13c/0xb60 [ 31.064531] kunit_try_run_case+0x1b3/0x490 [ 31.064905] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.065502] kthread+0x257/0x310 [ 31.066233] ret_from_fork+0x41/0x80 [ 31.066705] ret_from_fork_asm+0x1a/0x30 [ 31.067193] [ 31.067447] The buggy address belongs to the object at ffff888102a07ec0 [ 31.067447] which belongs to the cache kmalloc-32 of size 32 [ 31.068671] The buggy address is located 16 bytes inside of [ 31.068671] freed 32-byte region [ffff888102a07ec0, ffff888102a07ee0) [ 31.070191] [ 31.070432] The buggy address belongs to the physical page: [ 31.071034] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a07 [ 31.071552] flags: 0x200000000000000(node=0|zone=2) [ 31.072363] page_type: f5(slab) [ 31.072940] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 31.074137] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 31.074902] page dumped because: kasan: bad access detected [ 31.075548] [ 31.075811] Memory state around the buggy address: [ 31.076512] ffff888102a07d80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 31.077592] ffff888102a07e00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 31.078456] >ffff888102a07e80: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.079462] ^ [ 31.080058] ffff888102a07f00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 31.081288] ffff888102a07f80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.082555] ==================================================================