Date
Nov. 22, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 37.425862] ================================================================== [ 37.427428] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 37.428637] Read of size 1 at addr fff00000c6a4c550 by task kunit_try_catch/248 [ 37.430155] [ 37.430581] CPU: 1 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241122 #1 [ 37.431721] Tainted: [B]=BAD_PAGE, [N]=TEST [ 37.432761] Hardware name: linux,dummy-virt (DT) [ 37.433231] Call trace: [ 37.434403] show_stack+0x20/0x38 (C) [ 37.435359] dump_stack_lvl+0x8c/0xd0 [ 37.436010] print_report+0x118/0x5e0 [ 37.436325] kasan_report+0xc8/0x118 [ 37.437429] __asan_report_load1_noabort+0x20/0x30 [ 37.438731] strlen+0xa8/0xb0 [ 37.439421] kasan_strings+0x320/0x8f8 [ 37.440192] kunit_try_run_case+0x14c/0x3d0 [ 37.440945] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.441633] kthread+0x24c/0x2d0 [ 37.442179] ret_from_fork+0x10/0x20 [ 37.442837] [ 37.443217] Allocated by task 248: [ 37.445206] kasan_save_stack+0x3c/0x68 [ 37.446263] kasan_save_track+0x20/0x40 [ 37.447117] kasan_save_alloc_info+0x40/0x58 [ 37.447961] __kasan_kmalloc+0xd4/0xd8 [ 37.449035] __kmalloc_cache_noprof+0x15c/0x3c8 [ 37.449930] kasan_strings+0xb4/0x8f8 [ 37.450914] kunit_try_run_case+0x14c/0x3d0 [ 37.451810] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.452965] kthread+0x24c/0x2d0 [ 37.453987] ret_from_fork+0x10/0x20 [ 37.454292] [ 37.454500] Freed by task 248: [ 37.454888] kasan_save_stack+0x3c/0x68 [ 37.455702] kasan_save_track+0x20/0x40 [ 37.456208] kasan_save_free_info+0x4c/0x78 [ 37.457831] __kasan_slab_free+0x6c/0x98 [ 37.458345] kfree+0x114/0x3d0 [ 37.459064] kasan_strings+0x128/0x8f8 [ 37.459616] kunit_try_run_case+0x14c/0x3d0 [ 37.460364] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.461221] kthread+0x24c/0x2d0 [ 37.462452] ret_from_fork+0x10/0x20 [ 37.463109] [ 37.463480] The buggy address belongs to the object at fff00000c6a4c540 [ 37.463480] which belongs to the cache kmalloc-32 of size 32 [ 37.465373] The buggy address is located 16 bytes inside of [ 37.465373] freed 32-byte region [fff00000c6a4c540, fff00000c6a4c560) [ 37.467890] [ 37.468255] The buggy address belongs to the physical page: [ 37.468896] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106a4c [ 37.470965] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 37.471787] page_type: f5(slab) [ 37.472062] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 37.473086] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 37.474701] page dumped because: kasan: bad access detected [ 37.475573] [ 37.476247] Memory state around the buggy address: [ 37.476864] fff00000c6a4c400: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 37.478328] fff00000c6a4c480: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 37.479367] >fff00000c6a4c500: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 37.480284] ^ [ 37.481280] fff00000c6a4c580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.481937] fff00000c6a4c600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.483404] ==================================================================
[ 28.305327] ================================================================== [ 28.306524] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 28.307534] Read of size 1 at addr ffff888102a18a90 by task kunit_try_catch/267 [ 28.308293] [ 28.308543] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241122 #1 [ 28.309344] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.309794] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.310817] Call Trace: [ 28.311772] <TASK> [ 28.312231] dump_stack_lvl+0x73/0xb0 [ 28.312725] print_report+0xd1/0x640 [ 28.313114] ? __virt_addr_valid+0x1db/0x2d0 [ 28.313654] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.314290] kasan_report+0x102/0x140 [ 28.314801] ? strlen+0x8f/0xb0 [ 28.315300] ? strlen+0x8f/0xb0 [ 28.315627] __asan_report_load1_noabort+0x18/0x20 [ 28.316158] strlen+0x8f/0xb0 [ 28.316586] kasan_strings+0x432/0xb60 [ 28.317180] ? __pfx_kasan_strings+0x10/0x10 [ 28.317537] ? __schedule+0xc3e/0x2790 [ 28.317817] ? __pfx_read_tsc+0x10/0x10 [ 28.318776] ? ktime_get_ts64+0x84/0x230 [ 28.319315] kunit_try_run_case+0x1b3/0x490 [ 28.320059] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.320732] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.321410] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.321985] ? __kthread_parkme+0x82/0x160 [ 28.322374] ? preempt_count_sub+0x50/0x80 [ 28.322953] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.323254] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.323605] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.324234] kthread+0x257/0x310 [ 28.324645] ? __pfx_kthread+0x10/0x10 [ 28.325177] ret_from_fork+0x41/0x80 [ 28.325853] ? __pfx_kthread+0x10/0x10 [ 28.326939] ret_from_fork_asm+0x1a/0x30 [ 28.327652] </TASK> [ 28.328020] [ 28.328241] Allocated by task 267: [ 28.329249] kasan_save_stack+0x3d/0x60 [ 28.329802] kasan_save_track+0x18/0x40 [ 28.330245] kasan_save_alloc_info+0x3b/0x50 [ 28.331802] __kasan_kmalloc+0xb7/0xc0 [ 28.332278] __kmalloc_cache_noprof+0x184/0x410 [ 28.332568] kasan_strings+0xb3/0xb60 [ 28.332846] kunit_try_run_case+0x1b3/0x490 [ 28.333218] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.334189] kthread+0x257/0x310 [ 28.334578] ret_from_fork+0x41/0x80 [ 28.335022] ret_from_fork_asm+0x1a/0x30 [ 28.335593] [ 28.335814] Freed by task 267: [ 28.336317] kasan_save_stack+0x3d/0x60 [ 28.336731] kasan_save_track+0x18/0x40 [ 28.337355] kasan_save_free_info+0x3f/0x60 [ 28.337644] __kasan_slab_free+0x56/0x70 [ 28.337999] kfree+0x123/0x3f0 [ 28.338339] kasan_strings+0x13a/0xb60 [ 28.339041] kunit_try_run_case+0x1b3/0x490 [ 28.340140] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.340739] kthread+0x257/0x310 [ 28.341015] ret_from_fork+0x41/0x80 [ 28.341272] ret_from_fork_asm+0x1a/0x30 [ 28.341541] [ 28.341741] The buggy address belongs to the object at ffff888102a18a80 [ 28.341741] which belongs to the cache kmalloc-32 of size 32 [ 28.343400] The buggy address is located 16 bytes inside of [ 28.343400] freed 32-byte region [ffff888102a18a80, ffff888102a18aa0) [ 28.344622] [ 28.344949] The buggy address belongs to the physical page: [ 28.345319] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a18 [ 28.345850] flags: 0x200000000000000(node=0|zone=2) [ 28.346172] page_type: f5(slab) [ 28.346410] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 28.347779] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 28.348631] page dumped because: kasan: bad access detected [ 28.349136] [ 28.349379] Memory state around the buggy address: [ 28.349774] ffff888102a18980: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 28.350737] ffff888102a18a00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 28.351240] >ffff888102a18a80: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 28.351887] ^ [ 28.352347] ffff888102a18b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.352714] ffff888102a18b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.353093] ==================================================================