Date
Nov. 27, 2024, 3:37 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 51.058091] ================================================================== [ 51.058991] BUG: KASAN: slab-use-after-free in kasan_strings+0x858/0x8f8 [ 51.060075] Read of size 1 at addr fff00000c616c150 by task kunit_try_catch/248 [ 51.060971] [ 51.061731] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 51.063056] Tainted: [B]=BAD_PAGE, [N]=TEST [ 51.063731] Hardware name: linux,dummy-virt (DT) [ 51.064365] Call trace: [ 51.064904] show_stack+0x20/0x38 (C) [ 51.066241] dump_stack_lvl+0x8c/0xd0 [ 51.066849] print_report+0x118/0x5e0 [ 51.067474] kasan_report+0xc8/0x118 [ 51.068161] __asan_report_load1_noabort+0x20/0x30 [ 51.068974] kasan_strings+0x858/0x8f8 [ 51.069625] kunit_try_run_case+0x14c/0x3d0 [ 51.070698] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 51.071501] kthread+0x24c/0x2d0 [ 51.072183] ret_from_fork+0x10/0x20 [ 51.072716] [ 51.072964] Allocated by task 248: [ 51.073829] kasan_save_stack+0x3c/0x68 [ 51.074489] kasan_save_track+0x20/0x40 [ 51.075213] kasan_save_alloc_info+0x40/0x58 [ 51.076573] __kasan_kmalloc+0xd4/0xd8 [ 51.077192] __kmalloc_cache_noprof+0x15c/0x3c0 [ 51.078047] kasan_strings+0xb4/0x8f8 [ 51.078673] kunit_try_run_case+0x14c/0x3d0 [ 51.079377] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 51.080225] kthread+0x24c/0x2d0 [ 51.080918] ret_from_fork+0x10/0x20 [ 51.081431] [ 51.081813] Freed by task 248: [ 51.082256] kasan_save_stack+0x3c/0x68 [ 51.082812] kasan_save_track+0x20/0x40 [ 51.083485] kasan_save_free_info+0x4c/0x78 [ 51.083960] __kasan_slab_free+0x6c/0x98 [ 51.085068] kfree+0x114/0x3c8 [ 51.086143] kasan_strings+0x128/0x8f8 [ 51.087155] kunit_try_run_case+0x14c/0x3d0 [ 51.087962] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 51.088774] kthread+0x24c/0x2d0 [ 51.089898] ret_from_fork+0x10/0x20 [ 51.090703] [ 51.091059] The buggy address belongs to the object at fff00000c616c140 [ 51.091059] which belongs to the cache kmalloc-32 of size 32 [ 51.092831] The buggy address is located 16 bytes inside of [ 51.092831] freed 32-byte region [fff00000c616c140, fff00000c616c160) [ 51.095256] [ 51.095541] The buggy address belongs to the physical page: [ 51.096416] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10616c [ 51.097398] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 51.098322] page_type: f5(slab) [ 51.098815] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 51.100017] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 51.100979] page dumped because: kasan: bad access detected [ 51.102357] [ 51.102650] Memory state around the buggy address: [ 51.103664] fff00000c616c000: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 51.104531] fff00000c616c080: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 51.105829] >fff00000c616c100: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 51.106602] ^ [ 51.107287] fff00000c616c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 51.108119] fff00000c616c200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 51.109077] ==================================================================
[ 28.458626] ================================================================== [ 28.460749] BUG: KASAN: slab-use-after-free in kasan_strings+0xa0f/0xb60 [ 28.461601] Read of size 1 at addr ffff888101ab9950 by task kunit_try_catch/267 [ 28.462856] [ 28.463800] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 28.464830] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.465887] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.467601] Call Trace: [ 28.468519] <TASK> [ 28.468747] dump_stack_lvl+0x73/0xb0 [ 28.469118] print_report+0xd1/0x640 [ 28.469673] ? __virt_addr_valid+0x1db/0x2d0 [ 28.470258] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.471200] kasan_report+0x102/0x140 [ 28.471674] ? kasan_strings+0xa0f/0xb60 [ 28.472411] ? kasan_strings+0xa0f/0xb60 [ 28.473190] __asan_report_load1_noabort+0x18/0x20 [ 28.473613] kasan_strings+0xa0f/0xb60 [ 28.474288] ? __pfx_kasan_strings+0x10/0x10 [ 28.474750] ? __schedule+0xc3e/0x2790 [ 28.475664] ? __pfx_read_tsc+0x10/0x10 [ 28.476296] ? ktime_get_ts64+0x84/0x230 [ 28.476701] kunit_try_run_case+0x1b3/0x490 [ 28.477859] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.478416] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.479331] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.479871] ? __kthread_parkme+0x82/0x160 [ 28.480710] ? preempt_count_sub+0x50/0x80 [ 28.481566] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.481876] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.483210] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.483452] kthread+0x257/0x310 [ 28.483629] ? __pfx_kthread+0x10/0x10 [ 28.483810] ret_from_fork+0x41/0x80 [ 28.484257] ? __pfx_kthread+0x10/0x10 [ 28.484917] ret_from_fork_asm+0x1a/0x30 [ 28.485690] </TASK> [ 28.486299] [ 28.486639] Allocated by task 267: [ 28.487338] kasan_save_stack+0x3d/0x60 [ 28.488395] kasan_save_track+0x18/0x40 [ 28.489217] kasan_save_alloc_info+0x3b/0x50 [ 28.489676] __kasan_kmalloc+0xb7/0xc0 [ 28.490566] __kmalloc_cache_noprof+0x184/0x410 [ 28.491369] kasan_strings+0xb3/0xb60 [ 28.491761] kunit_try_run_case+0x1b3/0x490 [ 28.492400] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.492936] kthread+0x257/0x310 [ 28.493838] ret_from_fork+0x41/0x80 [ 28.494618] ret_from_fork_asm+0x1a/0x30 [ 28.494979] [ 28.495793] Freed by task 267: [ 28.496160] kasan_save_stack+0x3d/0x60 [ 28.496900] kasan_save_track+0x18/0x40 [ 28.497466] kasan_save_free_info+0x3f/0x60 [ 28.497862] __kasan_slab_free+0x56/0x70 [ 28.499055] kfree+0x123/0x3f0 [ 28.499344] kasan_strings+0x13a/0xb60 [ 28.500485] kunit_try_run_case+0x1b3/0x490 [ 28.501546] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.502288] kthread+0x257/0x310 [ 28.502610] ret_from_fork+0x41/0x80 [ 28.502969] ret_from_fork_asm+0x1a/0x30 [ 28.503471] [ 28.503717] The buggy address belongs to the object at ffff888101ab9940 [ 28.503717] which belongs to the cache kmalloc-32 of size 32 [ 28.505119] The buggy address is located 16 bytes inside of [ 28.505119] freed 32-byte region [ffff888101ab9940, ffff888101ab9960) [ 28.506902] [ 28.507430] The buggy address belongs to the physical page: [ 28.508508] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ab9 [ 28.509407] flags: 0x200000000000000(node=0|zone=2) [ 28.510472] page_type: f5(slab) [ 28.510814] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 28.511773] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 28.513900] page dumped because: kasan: bad access detected [ 28.514508] [ 28.514769] Memory state around the buggy address: [ 28.515816] ffff888101ab9800: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 28.517152] ffff888101ab9880: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 28.517637] >ffff888101ab9900: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 28.518161] ^ [ 28.518696] ffff888101ab9980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.519213] ffff888101ab9a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.520012] ==================================================================