Date
Dec. 6, 2024, 3:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.715362] ================================================================== [ 31.716164] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 31.716964] Free of addr fff00000c5b518a0 by task kunit_try_catch/181 [ 31.717757] [ 31.718137] CPU: 0 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241206 #1 [ 31.720473] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.721056] Hardware name: linux,dummy-virt (DT) [ 31.721701] Call trace: [ 31.722092] show_stack+0x20/0x38 (C) [ 31.722960] dump_stack_lvl+0x8c/0xd0 [ 31.723660] print_report+0x118/0x5e0 [ 31.724346] kasan_report_invalid_free+0xb0/0xd8 [ 31.725031] check_slab_allocation+0xd4/0x108 [ 31.725818] __kasan_slab_pre_free+0x2c/0x48 [ 31.726919] kfree+0xe8/0x3c8 [ 31.727483] kfree_sensitive+0x3c/0xb0 [ 31.728103] kmalloc_double_kzfree+0x168/0x308 [ 31.728724] kunit_try_run_case+0x14c/0x3d0 [ 31.729419] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.730136] kthread+0x24c/0x2d0 [ 31.730908] ret_from_fork+0x10/0x20 [ 31.731493] [ 31.731888] Allocated by task 181: [ 31.732434] kasan_save_stack+0x3c/0x68 [ 31.733027] kasan_save_track+0x20/0x40 [ 31.733564] kasan_save_alloc_info+0x40/0x58 [ 31.734130] __kasan_kmalloc+0xd4/0xd8 [ 31.734749] __kmalloc_cache_noprof+0x15c/0x3c0 [ 31.735870] kmalloc_double_kzfree+0xb8/0x308 [ 31.736386] kunit_try_run_case+0x14c/0x3d0 [ 31.737068] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.737787] kthread+0x24c/0x2d0 [ 31.738372] ret_from_fork+0x10/0x20 [ 31.739541] [ 31.739914] Freed by task 181: [ 31.740437] kasan_save_stack+0x3c/0x68 [ 31.740931] kasan_save_track+0x20/0x40 [ 31.741591] kasan_save_free_info+0x4c/0x78 [ 31.742860] __kasan_slab_free+0x6c/0x98 [ 31.743404] kfree+0x114/0x3c8 [ 31.743943] kfree_sensitive+0x80/0xb0 [ 31.744601] kmalloc_double_kzfree+0x11c/0x308 [ 31.745184] kunit_try_run_case+0x14c/0x3d0 [ 31.745736] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.746684] kthread+0x24c/0x2d0 [ 31.747277] ret_from_fork+0x10/0x20 [ 31.748046] [ 31.748407] The buggy address belongs to the object at fff00000c5b518a0 [ 31.748407] which belongs to the cache kmalloc-16 of size 16 [ 31.749705] The buggy address is located 0 bytes inside of [ 31.749705] 16-byte region [fff00000c5b518a0, fff00000c5b518b0) [ 31.751288] [ 31.751722] The buggy address belongs to the physical page: [ 31.752441] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105b51 [ 31.753447] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.754538] page_type: f5(slab) [ 31.755122] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 31.756077] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 31.756981] page dumped because: kasan: bad access detected [ 31.757684] [ 31.758092] Memory state around the buggy address: [ 31.759740] fff00000c5b51780: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 31.760602] fff00000c5b51800: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 31.761477] >fff00000c5b51880: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 31.762413] ^ [ 31.763278] fff00000c5b51900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.764128] fff00000c5b51980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.765295] ==================================================================
[ 24.357995] ================================================================== [ 24.359447] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 24.360321] Free of addr ffff888101fff700 by task kunit_try_catch/200 [ 24.361043] [ 24.361235] CPU: 1 UID: 0 PID: 200 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241206 #1 [ 24.362803] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.363177] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.364201] Call Trace: [ 24.364554] <TASK> [ 24.364866] dump_stack_lvl+0x73/0xb0 [ 24.365420] print_report+0xd1/0x640 [ 24.365703] ? __virt_addr_valid+0x1db/0x2d0 [ 24.367575] ? kfree_sensitive+0x2e/0x90 [ 24.367925] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.369031] ? kfree_sensitive+0x2e/0x90 [ 24.369442] kasan_report_invalid_free+0xc0/0xf0 [ 24.370016] ? kfree_sensitive+0x2e/0x90 [ 24.370504] ? kfree_sensitive+0x2e/0x90 [ 24.371033] check_slab_allocation+0x101/0x130 [ 24.371634] __kasan_slab_pre_free+0x28/0x40 [ 24.372056] kfree+0xf1/0x3f0 [ 24.372315] ? kfree_sensitive+0x2e/0x90 [ 24.372786] kfree_sensitive+0x2e/0x90 [ 24.373295] kmalloc_double_kzfree+0x19d/0x360 [ 24.374292] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 24.374700] ? __schedule+0xc70/0x27e0 [ 24.375236] ? __pfx_read_tsc+0x10/0x10 [ 24.375829] ? ktime_get_ts64+0x86/0x230 [ 24.376514] kunit_try_run_case+0x1b3/0x490 [ 24.376913] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.378495] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 24.378900] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.379266] ? __kthread_parkme+0x82/0x160 [ 24.379747] ? preempt_count_sub+0x50/0x80 [ 24.380711] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.381646] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.382242] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.383580] kthread+0x257/0x310 [ 24.383905] ? __pfx_kthread+0x10/0x10 [ 24.384642] ret_from_fork+0x41/0x80 [ 24.385108] ? __pfx_kthread+0x10/0x10 [ 24.385984] ret_from_fork_asm+0x1a/0x30 [ 24.386807] </TASK> [ 24.387095] [ 24.387352] Allocated by task 200: [ 24.387761] kasan_save_stack+0x3d/0x60 [ 24.388353] kasan_save_track+0x18/0x40 [ 24.388631] kasan_save_alloc_info+0x3b/0x50 [ 24.388989] __kasan_kmalloc+0xb7/0xc0 [ 24.390513] __kmalloc_cache_noprof+0x184/0x410 [ 24.391057] kmalloc_double_kzfree+0xaa/0x360 [ 24.391449] kunit_try_run_case+0x1b3/0x490 [ 24.391812] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.392181] kthread+0x257/0x310 [ 24.393132] ret_from_fork+0x41/0x80 [ 24.393641] ret_from_fork_asm+0x1a/0x30 [ 24.394360] [ 24.394595] Freed by task 200: [ 24.394833] kasan_save_stack+0x3d/0x60 [ 24.395155] kasan_save_track+0x18/0x40 [ 24.395612] kasan_save_free_info+0x3f/0x60 [ 24.396377] __kasan_slab_free+0x56/0x70 [ 24.396906] kfree+0x123/0x3f0 [ 24.397161] kfree_sensitive+0x67/0x90 [ 24.398004] kmalloc_double_kzfree+0x12c/0x360 [ 24.398833] kunit_try_run_case+0x1b3/0x490 [ 24.399210] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.400610] kthread+0x257/0x310 [ 24.401125] ret_from_fork+0x41/0x80 [ 24.401404] ret_from_fork_asm+0x1a/0x30 [ 24.401753] [ 24.402179] The buggy address belongs to the object at ffff888101fff700 [ 24.402179] which belongs to the cache kmalloc-16 of size 16 [ 24.403448] The buggy address is located 0 bytes inside of [ 24.403448] 16-byte region [ffff888101fff700, ffff888101fff710) [ 24.404813] [ 24.405124] The buggy address belongs to the physical page: [ 24.405791] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101fff [ 24.407539] flags: 0x200000000000000(node=0|zone=2) [ 24.408386] page_type: f5(slab) [ 24.408883] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 24.409580] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 24.410063] page dumped because: kasan: bad access detected [ 24.410593] [ 24.410822] Memory state around the buggy address: [ 24.411382] ffff888101fff600: 00 00 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 24.412203] ffff888101fff680: fa fb fc fc 00 04 fc fc fa fb fc fc fa fb fc fc [ 24.413253] >ffff888101fff700: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.413971] ^ [ 24.414555] ffff888101fff780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.415000] ffff888101fff800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.415408] ==================================================================