Date
Dec. 9, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 27.080969] ================================================================== [ 27.081625] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 27.082201] Read of size 1 at addr fff00000c1204c50 by task kunit_try_catch/247 [ 27.082872] [ 27.083213] CPU: 0 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc2-next-20241209 #1 [ 27.084325] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.085083] Hardware name: linux,dummy-virt (DT) [ 27.085674] Call trace: [ 27.086158] show_stack+0x20/0x38 (C) [ 27.086678] dump_stack_lvl+0x8c/0xd0 [ 27.088116] print_report+0x118/0x5e0 [ 27.088716] kasan_report+0xc8/0x118 [ 27.089268] __asan_report_load1_noabort+0x20/0x30 [ 27.089999] strnlen+0x80/0x88 [ 27.090560] kasan_strings+0x364/0x8d8 [ 27.091184] kunit_try_run_case+0x14c/0x3d0 [ 27.091656] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.092417] kthread+0x24c/0x2d0 [ 27.093165] ret_from_fork+0x10/0x20 [ 27.093713] [ 27.094033] Allocated by task 247: [ 27.094572] kasan_save_stack+0x3c/0x68 [ 27.095194] kasan_save_track+0x20/0x40 [ 27.096489] kasan_save_alloc_info+0x40/0x58 [ 27.097083] __kasan_kmalloc+0xd4/0xd8 [ 27.097595] __kmalloc_cache_noprof+0x15c/0x3c0 [ 27.098205] kasan_strings+0xb0/0x8d8 [ 27.098771] kunit_try_run_case+0x14c/0x3d0 [ 27.099366] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.100233] kthread+0x24c/0x2d0 [ 27.100788] ret_from_fork+0x10/0x20 [ 27.101327] [ 27.101687] Freed by task 247: [ 27.102160] kasan_save_stack+0x3c/0x68 [ 27.102839] kasan_save_track+0x20/0x40 [ 27.104142] kasan_save_free_info+0x4c/0x78 [ 27.104741] __kasan_slab_free+0x6c/0x98 [ 27.105296] kfree+0x114/0x3c8 [ 27.105985] kasan_strings+0x124/0x8d8 [ 27.106460] kunit_try_run_case+0x14c/0x3d0 [ 27.107106] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.108100] kthread+0x24c/0x2d0 [ 27.108615] ret_from_fork+0x10/0x20 [ 27.109160] [ 27.109515] The buggy address belongs to the object at fff00000c1204c40 [ 27.109515] which belongs to the cache kmalloc-32 of size 32 [ 27.110817] The buggy address is located 16 bytes inside of [ 27.110817] freed 32-byte region [fff00000c1204c40, fff00000c1204c60) [ 27.112670] [ 27.112988] The buggy address belongs to the physical page: [ 27.113682] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101204 [ 27.114620] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 27.115793] page_type: f5(slab) [ 27.116262] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 27.117124] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 27.117958] page dumped because: kasan: bad access detected [ 27.118615] [ 27.119646] Memory state around the buggy address: [ 27.120243] fff00000c1204b00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 27.121122] fff00000c1204b80: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 27.121920] >fff00000c1204c00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 27.122718] ^ [ 27.123357] fff00000c1204c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.124306] fff00000c1204d00: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 27.125235] ==================================================================
[ 27.525936] ================================================================== [ 27.526707] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 27.528207] Read of size 1 at addr ffff888102964dd0 by task kunit_try_catch/266 [ 27.528909] [ 27.529330] CPU: 0 UID: 0 PID: 266 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc2-next-20241209 #1 [ 27.530397] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.530901] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.531683] Call Trace: [ 27.532212] <TASK> [ 27.532530] dump_stack_lvl+0x73/0xb0 [ 27.533083] print_report+0xd1/0x640 [ 27.533601] ? __virt_addr_valid+0x1db/0x2d0 [ 27.534248] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.534949] kasan_report+0x102/0x140 [ 27.535521] ? strnlen+0x73/0x80 [ 27.535925] ? strnlen+0x73/0x80 [ 27.536411] __asan_report_load1_noabort+0x18/0x20 [ 27.536947] strnlen+0x73/0x80 [ 27.537446] kasan_strings+0x4c3/0xb60 [ 27.537884] ? __pfx_kasan_strings+0x10/0x10 [ 27.538737] ? __schedule+0xc70/0x27e0 [ 27.539181] ? __pfx_read_tsc+0x10/0x10 [ 27.539585] ? ktime_get_ts64+0x86/0x230 [ 27.540405] kunit_try_run_case+0x1b3/0x490 [ 27.541604] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.542672] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 27.543190] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.543606] ? __kthread_parkme+0x82/0x160 [ 27.544165] ? preempt_count_sub+0x50/0x80 [ 27.544563] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.544974] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.545488] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.546069] kthread+0x257/0x310 [ 27.546591] ? __pfx_kthread+0x10/0x10 [ 27.547037] ret_from_fork+0x41/0x80 [ 27.547360] ? __pfx_kthread+0x10/0x10 [ 27.547745] ret_from_fork_asm+0x1a/0x30 [ 27.548214] </TASK> [ 27.548479] [ 27.548708] Allocated by task 266: [ 27.549117] kasan_save_stack+0x3d/0x60 [ 27.549447] kasan_save_track+0x18/0x40 [ 27.549799] kasan_save_alloc_info+0x3b/0x50 [ 27.550359] __kasan_kmalloc+0xb7/0xc0 [ 27.550837] __kmalloc_cache_noprof+0x184/0x410 [ 27.551197] kasan_strings+0xb9/0xb60 [ 27.551640] kunit_try_run_case+0x1b3/0x490 [ 27.551998] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.552445] kthread+0x257/0x310 [ 27.552705] ret_from_fork+0x41/0x80 [ 27.553184] ret_from_fork_asm+0x1a/0x30 [ 27.553722] [ 27.554099] Freed by task 266: [ 27.554366] kasan_save_stack+0x3d/0x60 [ 27.554856] kasan_save_track+0x18/0x40 [ 27.555177] kasan_save_free_info+0x3f/0x60 [ 27.555659] __kasan_slab_free+0x56/0x70 [ 27.556200] kfree+0x123/0x3f0 [ 27.556468] kasan_strings+0x13c/0xb60 [ 27.556833] kunit_try_run_case+0x1b3/0x490 [ 27.557381] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.558159] kthread+0x257/0x310 [ 27.558517] ret_from_fork+0x41/0x80 [ 27.559050] ret_from_fork_asm+0x1a/0x30 [ 27.559414] [ 27.559661] The buggy address belongs to the object at ffff888102964dc0 [ 27.559661] which belongs to the cache kmalloc-32 of size 32 [ 27.560356] The buggy address is located 16 bytes inside of [ 27.560356] freed 32-byte region [ffff888102964dc0, ffff888102964de0) [ 27.561430] [ 27.561591] The buggy address belongs to the physical page: [ 27.562531] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102964 [ 27.563248] flags: 0x200000000000000(node=0|zone=2) [ 27.563683] page_type: f5(slab) [ 27.564076] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 27.564924] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 27.565415] page dumped because: kasan: bad access detected [ 27.565788] [ 27.566050] Memory state around the buggy address: [ 27.566882] ffff888102964c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.567464] ffff888102964d00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.568075] >ffff888102964d80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.568898] ^ [ 27.569437] ffff888102964e00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.570100] ffff888102964e80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 27.570655] ==================================================================