Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 24.109226] ================================================================== [ 24.109996] BUG: KASAN: slab-use-after-free in kasan_strings+0x894/0x938 [ 24.110698] Read of size 1 at addr fff00000c41f1950 by task kunit_try_catch/247 [ 24.111463] [ 24.112729] CPU: 1 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 24.112980] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.113067] Hardware name: linux,dummy-virt (DT) [ 24.113159] Call trace: [ 24.113236] dump_backtrace+0x9c/0x128 [ 24.113355] show_stack+0x20/0x38 [ 24.113464] dump_stack_lvl+0x8c/0xd0 [ 24.113528] print_report+0x118/0x5f0 [ 24.113577] kasan_report+0xdc/0x128 [ 24.113627] __asan_report_load1_noabort+0x20/0x30 [ 24.113680] kasan_strings+0x894/0x938 [ 24.113730] kunit_try_run_case+0x170/0x3f0 [ 24.113778] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.113835] kthread+0x24c/0x2d0 [ 24.113883] ret_from_fork+0x10/0x20 [ 24.113934] [ 24.121141] Allocated by task 247: [ 24.121549] kasan_save_stack+0x3c/0x68 [ 24.122322] kasan_save_track+0x20/0x40 [ 24.123544] kasan_save_alloc_info+0x40/0x58 [ 24.124397] __kasan_kmalloc+0xd4/0xd8 [ 24.125018] __kmalloc_cache_noprof+0x154/0x320 [ 24.125572] kasan_strings+0xb0/0x938 [ 24.126171] kunit_try_run_case+0x170/0x3f0 [ 24.126744] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.127462] kthread+0x24c/0x2d0 [ 24.128342] ret_from_fork+0x10/0x20 [ 24.128752] [ 24.128936] Freed by task 247: [ 24.129488] kasan_save_stack+0x3c/0x68 [ 24.130074] kasan_save_track+0x20/0x40 [ 24.130617] kasan_save_free_info+0x4c/0x78 [ 24.131133] __kasan_slab_free+0x6c/0x98 [ 24.131577] kfree+0x110/0x3b8 [ 24.132068] kasan_strings+0x128/0x938 [ 24.133215] kunit_try_run_case+0x170/0x3f0 [ 24.133860] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.134545] kthread+0x24c/0x2d0 [ 24.135111] ret_from_fork+0x10/0x20 [ 24.136079] [ 24.136444] The buggy address belongs to the object at fff00000c41f1940 [ 24.136444] which belongs to the cache kmalloc-32 of size 32 [ 24.137895] The buggy address is located 16 bytes inside of [ 24.137895] freed 32-byte region [fff00000c41f1940, fff00000c41f1960) [ 24.139007] [ 24.139325] The buggy address belongs to the physical page: [ 24.140488] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1041f1 [ 24.141300] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 24.142338] page_type: f5(slab) [ 24.142742] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 24.143799] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 24.145154] page dumped because: kasan: bad access detected [ 24.145897] [ 24.146372] Memory state around the buggy address: [ 24.147070] fff00000c41f1800: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 24.148070] fff00000c41f1880: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 24.148807] >fff00000c41f1900: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 24.149516] ^ [ 24.150229] fff00000c41f1980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.151020] fff00000c41f1a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.151867] ==================================================================
[ 20.831137] ================================================================== [ 20.832096] BUG: KASAN: slab-use-after-free in kasan_strings+0xa0f/0xb60 [ 20.832553] Read of size 1 at addr ffff888102af74d0 by task kunit_try_catch/264 [ 20.833321] [ 20.833942] CPU: 1 UID: 0 PID: 264 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 20.834166] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.834186] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 20.834238] Call Trace: [ 20.834291] <TASK> [ 20.834344] dump_stack_lvl+0x73/0xb0 [ 20.834427] print_report+0xd1/0x640 [ 20.834614] ? __virt_addr_valid+0x1db/0x2d0 [ 20.834674] ? kasan_strings+0xa0f/0xb60 [ 20.834743] ? kasan_complete_mode_report_info+0x64/0x200 [ 20.834816] ? kasan_strings+0xa0f/0xb60 [ 20.834893] kasan_report+0x140/0x180 [ 20.834968] ? kasan_strings+0xa0f/0xb60 [ 20.835057] __asan_report_load1_noabort+0x18/0x20 [ 20.835131] kasan_strings+0xa0f/0xb60 [ 20.835208] ? __pfx_kasan_strings+0x10/0x10 [ 20.835355] ? __schedule+0xc49/0x27a0 [ 20.835425] ? __pfx_read_tsc+0x10/0x10 [ 20.835515] ? ktime_get_ts64+0x84/0x230 [ 20.835572] kunit_try_run_case+0x1a6/0x480 [ 20.835608] ? __pfx_kunit_try_run_case+0x10/0x10 [ 20.835638] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 20.835667] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 20.835704] ? __kthread_parkme+0x82/0x160 [ 20.835734] ? preempt_count_sub+0x50/0x80 [ 20.835766] ? __pfx_kunit_try_run_case+0x10/0x10 [ 20.835795] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 20.835852] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.835936] kthread+0x257/0x310 [ 20.835992] ? __pfx_kthread+0x10/0x10 [ 20.836046] ret_from_fork+0x41/0x80 [ 20.836105] ? __pfx_kthread+0x10/0x10 [ 20.836162] ret_from_fork_asm+0x1a/0x30 [ 20.836256] </TASK> [ 20.836292] [ 20.856291] Allocated by task 264: [ 20.856875] kasan_save_stack+0x45/0x70 [ 20.857279] kasan_save_track+0x18/0x40 [ 20.858130] kasan_save_alloc_info+0x3b/0x50 [ 20.858785] __kasan_kmalloc+0xb7/0xc0 [ 20.859828] __kmalloc_cache_noprof+0x168/0x350 [ 20.860258] kasan_strings+0xb3/0xb60 [ 20.861095] kunit_try_run_case+0x1a6/0x480 [ 20.861416] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.862325] kthread+0x257/0x310 [ 20.863033] ret_from_fork+0x41/0x80 [ 20.863574] ret_from_fork_asm+0x1a/0x30 [ 20.863975] [ 20.864932] Freed by task 264: [ 20.865488] kasan_save_stack+0x45/0x70 [ 20.866191] kasan_save_track+0x18/0x40 [ 20.867097] kasan_save_free_info+0x3f/0x60 [ 20.867464] __kasan_slab_free+0x56/0x70 [ 20.868026] kfree+0x123/0x3d0 [ 20.868719] kasan_strings+0x13a/0xb60 [ 20.869708] kunit_try_run_case+0x1a6/0x480 [ 20.870525] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.871463] kthread+0x257/0x310 [ 20.872252] ret_from_fork+0x41/0x80 [ 20.872967] ret_from_fork_asm+0x1a/0x30 [ 20.873581] [ 20.873920] The buggy address belongs to the object at ffff888102af74c0 [ 20.873920] which belongs to the cache kmalloc-32 of size 32 [ 20.875712] The buggy address is located 16 bytes inside of [ 20.875712] freed 32-byte region [ffff888102af74c0, ffff888102af74e0) [ 20.876581] [ 20.876778] The buggy address belongs to the physical page: [ 20.878014] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102af7 [ 20.878532] flags: 0x200000000000000(node=0|zone=2) [ 20.879293] page_type: f5(slab) [ 20.879936] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 20.881370] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 20.882291] page dumped because: kasan: bad access detected [ 20.882701] [ 20.883193] Memory state around the buggy address: [ 20.883602] ffff888102af7380: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 20.884449] ffff888102af7400: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 20.885551] >ffff888102af7480: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 20.886249] ^ [ 20.887045] ffff888102af7500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.887812] ffff888102af7580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.888307] ==================================================================