Date
Nov. 20, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 39.731603] ================================================================== [ 39.732366] BUG: KASAN: slab-use-after-free in strrchr+0x6c/0x78 [ 39.733187] Read of size 1 at addr fff00000c65a90d0 by task kunit_try_catch/248 [ 39.734816] [ 39.735139] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241120 #1 [ 39.736352] Tainted: [B]=BAD_PAGE, [N]=TEST [ 39.736885] Hardware name: linux,dummy-virt (DT) [ 39.737166] Call trace: [ 39.738191] show_stack+0x20/0x38 (C) [ 39.738991] dump_stack_lvl+0x8c/0xd0 [ 39.739687] print_report+0x118/0x5e0 [ 39.740395] kasan_report+0xc8/0x118 [ 39.741130] __asan_report_load1_noabort+0x20/0x30 [ 39.742136] strrchr+0x6c/0x78 [ 39.742561] kasan_strings+0x1e0/0x8f8 [ 39.743100] kunit_try_run_case+0x14c/0x3d0 [ 39.744359] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 39.745070] kthread+0x24c/0x2d0 [ 39.745610] ret_from_fork+0x10/0x20 [ 39.746662] [ 39.746974] Allocated by task 248: [ 39.747433] kasan_save_stack+0x3c/0x68 [ 39.747948] kasan_save_track+0x20/0x40 [ 39.748502] kasan_save_alloc_info+0x40/0x58 [ 39.749023] __kasan_kmalloc+0xd4/0xd8 [ 39.749675] __kmalloc_cache_noprof+0x15c/0x3c8 [ 39.751163] kasan_strings+0xb4/0x8f8 [ 39.751861] kunit_try_run_case+0x14c/0x3d0 [ 39.752591] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 39.753555] kthread+0x24c/0x2d0 [ 39.754182] ret_from_fork+0x10/0x20 [ 39.754689] [ 39.755068] Freed by task 248: [ 39.755535] kasan_save_stack+0x3c/0x68 [ 39.756180] kasan_save_track+0x20/0x40 [ 39.756745] kasan_save_free_info+0x4c/0x78 [ 39.757518] __kasan_slab_free+0x6c/0x98 [ 39.758342] kfree+0x114/0x3d0 [ 39.758877] kasan_strings+0x128/0x8f8 [ 39.759473] kunit_try_run_case+0x14c/0x3d0 [ 39.760142] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 39.760864] kthread+0x24c/0x2d0 [ 39.761643] ret_from_fork+0x10/0x20 [ 39.762396] [ 39.762904] The buggy address belongs to the object at fff00000c65a90c0 [ 39.762904] which belongs to the cache kmalloc-32 of size 32 [ 39.764318] The buggy address is located 16 bytes inside of [ 39.764318] freed 32-byte region [fff00000c65a90c0, fff00000c65a90e0) [ 39.766151] [ 39.766505] The buggy address belongs to the physical page: [ 39.767111] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1065a9 [ 39.768290] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 39.769156] page_type: f5(slab) [ 39.769681] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 39.770259] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 39.771014] page dumped because: kasan: bad access detected [ 39.771721] [ 39.772068] Memory state around the buggy address: [ 39.772771] fff00000c65a8f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 39.773851] fff00000c65a9000: fa fb fb fb fc fc fc fc 00 00 07 fc fc fc fc fc [ 39.774946] >fff00000c65a9080: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 39.775840] ^ [ 39.776625] fff00000c65a9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 39.777817] fff00000c65a9180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 39.778761] ==================================================================
[ 31.354685] ================================================================== [ 31.356255] BUG: KASAN: slab-use-after-free in strrchr+0x64/0x70 [ 31.357540] Read of size 1 at addr ffff8881029f3d50 by task kunit_try_catch/266 [ 31.358907] [ 31.359394] CPU: 1 UID: 0 PID: 266 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241120 #1 [ 31.361590] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.361865] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 31.362212] Call Trace: [ 31.362433] <TASK> [ 31.363732] dump_stack_lvl+0x73/0xb0 [ 31.364172] print_report+0xd1/0x640 [ 31.365126] ? __virt_addr_valid+0x1db/0x2d0 [ 31.365829] ? kasan_complete_mode_report_info+0x64/0x200 [ 31.366670] kasan_report+0x102/0x140 [ 31.367161] ? strrchr+0x64/0x70 [ 31.367967] ? strrchr+0x64/0x70 [ 31.368518] __asan_report_load1_noabort+0x18/0x20 [ 31.369093] strrchr+0x64/0x70 [ 31.370130] kasan_strings+0x24c/0xb60 [ 31.370929] ? __pfx_kasan_strings+0x10/0x10 [ 31.371461] ? __schedule+0xc3e/0x2790 [ 31.372437] ? __pfx_read_tsc+0x10/0x10 [ 31.373269] ? ktime_get_ts64+0x84/0x230 [ 31.373640] kunit_try_run_case+0x1b3/0x490 [ 31.374772] ? __pfx_kunit_try_run_case+0x10/0x10 [ 31.375237] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 31.375948] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 31.376814] ? __kthread_parkme+0x82/0x160 [ 31.377251] ? preempt_count_sub+0x50/0x80 [ 31.378197] ? __pfx_kunit_try_run_case+0x10/0x10 [ 31.378619] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 31.379800] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.380507] kthread+0x257/0x310 [ 31.381127] ? __pfx_kthread+0x10/0x10 [ 31.381874] ret_from_fork+0x41/0x80 [ 31.382911] ? __pfx_kthread+0x10/0x10 [ 31.383571] ret_from_fork_asm+0x1a/0x30 [ 31.384425] </TASK> [ 31.384602] [ 31.384887] Allocated by task 266: [ 31.385765] kasan_save_stack+0x3d/0x60 [ 31.386746] kasan_save_track+0x18/0x40 [ 31.387132] kasan_save_alloc_info+0x3b/0x50 [ 31.387965] __kasan_kmalloc+0xb7/0xc0 [ 31.388470] __kmalloc_cache_noprof+0x184/0x410 [ 31.388921] kasan_strings+0xb3/0xb60 [ 31.389564] kunit_try_run_case+0x1b3/0x490 [ 31.390033] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.390892] kthread+0x257/0x310 [ 31.391347] ret_from_fork+0x41/0x80 [ 31.391884] ret_from_fork_asm+0x1a/0x30 [ 31.392741] [ 31.393051] Freed by task 266: [ 31.393769] kasan_save_stack+0x3d/0x60 [ 31.394031] kasan_save_track+0x18/0x40 [ 31.394306] kasan_save_free_info+0x3f/0x60 [ 31.394582] __kasan_slab_free+0x56/0x70 [ 31.395232] kfree+0x123/0x3f0 [ 31.395825] kasan_strings+0x13a/0xb60 [ 31.396922] kunit_try_run_case+0x1b3/0x490 [ 31.397775] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.398810] kthread+0x257/0x310 [ 31.399357] ret_from_fork+0x41/0x80 [ 31.400145] ret_from_fork_asm+0x1a/0x30 [ 31.401159] [ 31.401502] The buggy address belongs to the object at ffff8881029f3d40 [ 31.401502] which belongs to the cache kmalloc-32 of size 32 [ 31.403233] The buggy address is located 16 bytes inside of [ 31.403233] freed 32-byte region [ffff8881029f3d40, ffff8881029f3d60) [ 31.404282] [ 31.404742] The buggy address belongs to the physical page: [ 31.405363] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029f3 [ 31.406453] flags: 0x200000000000000(node=0|zone=2) [ 31.407191] page_type: f5(slab) [ 31.407819] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 31.408672] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 31.409599] page dumped because: kasan: bad access detected [ 31.410605] [ 31.410853] Memory state around the buggy address: [ 31.411612] ffff8881029f3c00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 31.412534] ffff8881029f3c80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 31.413312] >ffff8881029f3d00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.414097] ^ [ 31.414851] ffff8881029f3d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.417089] ffff8881029f3e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.417443] ==================================================================