Date
Nov. 22, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 37.303542] ================================================================== [ 37.304382] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 37.305200] Read of size 1 at addr fff00000c6a4c550 by task kunit_try_catch/248 [ 37.306056] [ 37.307724] CPU: 1 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241122 #1 [ 37.309117] Tainted: [B]=BAD_PAGE, [N]=TEST [ 37.309755] Hardware name: linux,dummy-virt (DT) [ 37.310455] Call trace: [ 37.310870] show_stack+0x20/0x38 (C) [ 37.311962] dump_stack_lvl+0x8c/0xd0 [ 37.312550] print_report+0x118/0x5e0 [ 37.313245] kasan_report+0xc8/0x118 [ 37.313869] __asan_report_load1_noabort+0x20/0x30 [ 37.314672] strcmp+0xc0/0xc8 [ 37.315137] kasan_strings+0x248/0x8f8 [ 37.315883] kunit_try_run_case+0x14c/0x3d0 [ 37.317186] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.318650] kthread+0x24c/0x2d0 [ 37.319792] ret_from_fork+0x10/0x20 [ 37.320135] [ 37.320304] Allocated by task 248: [ 37.320667] kasan_save_stack+0x3c/0x68 [ 37.322294] kasan_save_track+0x20/0x40 [ 37.323574] kasan_save_alloc_info+0x40/0x58 [ 37.324511] __kasan_kmalloc+0xd4/0xd8 [ 37.325469] __kmalloc_cache_noprof+0x15c/0x3c8 [ 37.326284] kasan_strings+0xb4/0x8f8 [ 37.326898] kunit_try_run_case+0x14c/0x3d0 [ 37.327583] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.328269] kthread+0x24c/0x2d0 [ 37.329108] ret_from_fork+0x10/0x20 [ 37.329996] [ 37.330419] Freed by task 248: [ 37.330872] kasan_save_stack+0x3c/0x68 [ 37.331403] kasan_save_track+0x20/0x40 [ 37.333018] kasan_save_free_info+0x4c/0x78 [ 37.333733] __kasan_slab_free+0x6c/0x98 [ 37.334317] kfree+0x114/0x3d0 [ 37.335220] kasan_strings+0x128/0x8f8 [ 37.336130] kunit_try_run_case+0x14c/0x3d0 [ 37.337020] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.338204] kthread+0x24c/0x2d0 [ 37.338661] ret_from_fork+0x10/0x20 [ 37.339478] [ 37.339930] The buggy address belongs to the object at fff00000c6a4c540 [ 37.339930] which belongs to the cache kmalloc-32 of size 32 [ 37.342209] The buggy address is located 16 bytes inside of [ 37.342209] freed 32-byte region [fff00000c6a4c540, fff00000c6a4c560) [ 37.343728] [ 37.344216] The buggy address belongs to the physical page: [ 37.345291] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106a4c [ 37.346316] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 37.347930] page_type: f5(slab) [ 37.348421] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 37.349891] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 37.350848] page dumped because: kasan: bad access detected [ 37.351623] [ 37.351956] Memory state around the buggy address: [ 37.353825] fff00000c6a4c400: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 37.354645] fff00000c6a4c480: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 37.355614] >fff00000c6a4c500: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 37.358150] ^ [ 37.358768] fff00000c6a4c580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.359351] fff00000c6a4c600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.359942] ==================================================================
[ 28.206896] ================================================================== [ 28.207710] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0 [ 28.208117] Read of size 1 at addr ffff888102a18a90 by task kunit_try_catch/267 [ 28.208925] [ 28.209167] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241122 #1 [ 28.209957] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.210328] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.211014] Call Trace: [ 28.211323] <TASK> [ 28.211553] dump_stack_lvl+0x73/0xb0 [ 28.211894] print_report+0xd1/0x640 [ 28.212331] ? __virt_addr_valid+0x1db/0x2d0 [ 28.212787] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.213293] kasan_report+0x102/0x140 [ 28.213921] ? strcmp+0xb0/0xc0 [ 28.214189] ? strcmp+0xb0/0xc0 [ 28.214452] __asan_report_load1_noabort+0x18/0x20 [ 28.215165] strcmp+0xb0/0xc0 [ 28.215569] kasan_strings+0x2e9/0xb60 [ 28.216161] ? __pfx_kasan_strings+0x10/0x10 [ 28.216743] ? __schedule+0xc3e/0x2790 [ 28.217561] ? __pfx_read_tsc+0x10/0x10 [ 28.218022] ? ktime_get_ts64+0x84/0x230 [ 28.218460] kunit_try_run_case+0x1b3/0x490 [ 28.219078] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.219429] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.219738] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.220303] ? __kthread_parkme+0x82/0x160 [ 28.221001] ? preempt_count_sub+0x50/0x80 [ 28.221531] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.222106] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.224140] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.225540] kthread+0x257/0x310 [ 28.225852] ? __pfx_kthread+0x10/0x10 [ 28.226157] ret_from_fork+0x41/0x80 [ 28.226574] ? __pfx_kthread+0x10/0x10 [ 28.227137] ret_from_fork_asm+0x1a/0x30 [ 28.227485] </TASK> [ 28.227668] [ 28.227812] Allocated by task 267: [ 28.228214] kasan_save_stack+0x3d/0x60 [ 28.228654] kasan_save_track+0x18/0x40 [ 28.229127] kasan_save_alloc_info+0x3b/0x50 [ 28.229851] __kasan_kmalloc+0xb7/0xc0 [ 28.230272] __kmalloc_cache_noprof+0x184/0x410 [ 28.230671] kasan_strings+0xb3/0xb60 [ 28.230956] kunit_try_run_case+0x1b3/0x490 [ 28.231231] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.231548] kthread+0x257/0x310 [ 28.232050] ret_from_fork+0x41/0x80 [ 28.232534] ret_from_fork_asm+0x1a/0x30 [ 28.232958] [ 28.233176] Freed by task 267: [ 28.233713] kasan_save_stack+0x3d/0x60 [ 28.234741] kasan_save_track+0x18/0x40 [ 28.235318] kasan_save_free_info+0x3f/0x60 [ 28.235634] __kasan_slab_free+0x56/0x70 [ 28.236071] kfree+0x123/0x3f0 [ 28.236313] kasan_strings+0x13a/0xb60 [ 28.236977] kunit_try_run_case+0x1b3/0x490 [ 28.237318] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.237882] kthread+0x257/0x310 [ 28.238134] ret_from_fork+0x41/0x80 [ 28.238738] ret_from_fork_asm+0x1a/0x30 [ 28.239227] [ 28.239477] The buggy address belongs to the object at ffff888102a18a80 [ 28.239477] which belongs to the cache kmalloc-32 of size 32 [ 28.240168] The buggy address is located 16 bytes inside of [ 28.240168] freed 32-byte region [ffff888102a18a80, ffff888102a18aa0) [ 28.240959] [ 28.241171] The buggy address belongs to the physical page: [ 28.241769] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a18 [ 28.242707] flags: 0x200000000000000(node=0|zone=2) [ 28.243037] page_type: f5(slab) [ 28.244007] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 28.244846] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 28.245344] page dumped because: kasan: bad access detected [ 28.246175] [ 28.246356] Memory state around the buggy address: [ 28.246637] ffff888102a18980: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 28.247031] ffff888102a18a00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 28.247411] >ffff888102a18a80: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 28.248157] ^ [ 28.248561] ffff888102a18b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.249286] ffff888102a18b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.250394] ==================================================================