Date
May 12, 2025, 6:12 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.671599] ================================================================== [ 19.672151] BUG: KASAN: slab-use-after-free in kmem_cache_rcu_uaf+0x390/0x468 [ 19.672419] Read of size 1 at addr fff00000c654f000 by task kunit_try_catch/202 [ 19.672654] [ 19.672810] CPU: 0 UID: 0 PID: 202 Comm: kunit_try_catch Tainted: G B N 6.14.7-rc1 #1 [ 19.672913] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.672943] Hardware name: linux,dummy-virt (DT) [ 19.672982] Call trace: [ 19.673011] show_stack+0x20/0x38 (C) [ 19.673073] dump_stack_lvl+0x8c/0xd0 [ 19.673134] print_report+0x118/0x608 [ 19.673189] kasan_report+0xdc/0x128 [ 19.673241] __asan_report_load1_noabort+0x20/0x30 [ 19.673292] kmem_cache_rcu_uaf+0x390/0x468 [ 19.673345] kunit_try_run_case+0x170/0x3f0 [ 19.673400] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.673458] kthread+0x318/0x620 [ 19.673508] ret_from_fork+0x10/0x20 [ 19.673564] [ 19.677702] Allocated by task 202: [ 19.677907] kasan_save_stack+0x3c/0x68 [ 19.678188] kasan_save_track+0x20/0x40 [ 19.678447] kasan_save_alloc_info+0x40/0x58 [ 19.678790] __kasan_slab_alloc+0xa8/0xb0 [ 19.679165] kmem_cache_alloc_noprof+0x10c/0x3a0 [ 19.679833] kmem_cache_rcu_uaf+0x12c/0x468 [ 19.680267] kunit_try_run_case+0x170/0x3f0 [ 19.680524] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.681024] kthread+0x318/0x620 [ 19.681351] ret_from_fork+0x10/0x20 [ 19.681574] [ 19.681782] Freed by task 0: [ 19.681969] kasan_save_stack+0x3c/0x68 [ 19.682245] kasan_save_track+0x20/0x40 [ 19.682477] kasan_save_free_info+0x4c/0x78 [ 19.682830] __kasan_slab_free+0x6c/0x98 [ 19.683172] slab_free_after_rcu_debug+0xd4/0x2f8 [ 19.683355] rcu_core+0x9f4/0x1e20 [ 19.683701] rcu_core_si+0x18/0x30 [ 19.683884] handle_softirqs+0x374/0xb28 [ 19.684148] __do_softirq+0x1c/0x28 [ 19.684404] [ 19.684534] Last potentially related work creation: [ 19.684705] kasan_save_stack+0x3c/0x68 [ 19.684946] kasan_record_aux_stack+0xb4/0xc8 [ 19.685319] kmem_cache_free+0x120/0x470 [ 19.685650] kmem_cache_rcu_uaf+0x16c/0x468 [ 19.685911] kunit_try_run_case+0x170/0x3f0 [ 19.686180] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.686451] kthread+0x318/0x620 [ 19.686613] ret_from_fork+0x10/0x20 [ 19.687058] [ 19.687251] The buggy address belongs to the object at fff00000c654f000 [ 19.687251] which belongs to the cache test_cache of size 200 [ 19.687706] The buggy address is located 0 bytes inside of [ 19.687706] freed 200-byte region [fff00000c654f000, fff00000c654f0c8) [ 19.688888] [ 19.689029] The buggy address belongs to the physical page: [ 19.689385] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10654f [ 19.689777] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.690136] page_type: f5(slab) [ 19.690435] raw: 0bfffe0000000000 fff00000c656d3c0 dead000000000122 0000000000000000 [ 19.691210] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 19.691447] page dumped because: kasan: bad access detected [ 19.691627] [ 19.691728] Memory state around the buggy address: [ 19.691930] fff00000c654ef00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.692140] fff00000c654ef80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.692650] >fff00000c654f000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.692906] ^ [ 19.693074] fff00000c654f080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 19.693582] fff00000c654f100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.693877] ==================================================================
[ 13.210433] ================================================================== [ 13.211024] BUG: KASAN: slab-use-after-free in kmem_cache_rcu_uaf+0x3e5/0x510 [ 13.211864] Read of size 1 at addr ffff888102ae7000 by task kunit_try_catch/221 [ 13.212705] [ 13.213262] CPU: 0 UID: 0 PID: 221 Comm: kunit_try_catch Tainted: G B N 6.14.7-rc1 #1 [ 13.213318] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.213330] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.213355] Call Trace: [ 13.213371] <TASK> [ 13.213393] dump_stack_lvl+0x73/0xb0 [ 13.213428] print_report+0xd1/0x650 [ 13.213451] ? __virt_addr_valid+0x1db/0x2d0 [ 13.213475] ? kmem_cache_rcu_uaf+0x3e5/0x510 [ 13.213497] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.213522] ? kmem_cache_rcu_uaf+0x3e5/0x510 [ 13.213543] kasan_report+0x140/0x180 [ 13.213564] ? kmem_cache_rcu_uaf+0x3e5/0x510 [ 13.213590] __asan_report_load1_noabort+0x18/0x20 [ 13.213612] kmem_cache_rcu_uaf+0x3e5/0x510 [ 13.213634] ? __pfx_kmem_cache_rcu_uaf+0x10/0x10 [ 13.213655] ? finish_task_switch.isra.0+0x153/0x700 [ 13.213680] ? __switch_to+0x5d9/0xf60 [ 13.213708] ? __pfx_read_tsc+0x10/0x10 [ 13.213730] ? ktime_get_ts64+0x86/0x230 [ 13.213763] kunit_try_run_case+0x1a6/0x480 [ 13.213788] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.213808] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 13.213830] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.213870] ? __kthread_parkme+0x82/0x160 [ 13.213893] ? preempt_count_sub+0x50/0x80 [ 13.213916] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.213938] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.213963] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.213987] kthread+0x324/0x6e0 [ 13.214026] ? trace_preempt_on+0x20/0xc0 [ 13.214051] ? __pfx_kthread+0x10/0x10 [ 13.214073] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.214095] ? calculate_sigpending+0x7b/0xa0 [ 13.214117] ? __pfx_kthread+0x10/0x10 [ 13.214139] ret_from_fork+0x41/0x80 [ 13.214157] ? __pfx_kthread+0x10/0x10 [ 13.214178] ret_from_fork_asm+0x1a/0x30 [ 13.214210] </TASK> [ 13.214221] [ 13.227607] Allocated by task 221: [ 13.227975] kasan_save_stack+0x45/0x70 [ 13.228478] kasan_save_track+0x18/0x40 [ 13.228848] kasan_save_alloc_info+0x3b/0x50 [ 13.229336] __kasan_slab_alloc+0x91/0xa0 [ 13.229756] kmem_cache_alloc_noprof+0x124/0x400 [ 13.229937] kmem_cache_rcu_uaf+0x156/0x510 [ 13.230123] kunit_try_run_case+0x1a6/0x480 [ 13.230714] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.231301] kthread+0x324/0x6e0 [ 13.231642] ret_from_fork+0x41/0x80 [ 13.231986] ret_from_fork_asm+0x1a/0x30 [ 13.232429] [ 13.232606] Freed by task 0: [ 13.232718] kasan_save_stack+0x45/0x70 [ 13.232867] kasan_save_track+0x18/0x40 [ 13.233040] kasan_save_free_info+0x3f/0x60 [ 13.233420] __kasan_slab_free+0x56/0x70 [ 13.233784] slab_free_after_rcu_debug+0xe4/0x310 [ 13.234359] rcu_core+0x680/0x1d70 [ 13.234714] rcu_core_si+0x12/0x20 [ 13.235147] handle_softirqs+0x209/0x730 [ 13.235296] __irq_exit_rcu+0xc9/0x110 [ 13.235430] irq_exit_rcu+0x12/0x20 [ 13.235559] sysvec_apic_timer_interrupt+0x81/0x90 [ 13.235719] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 13.235911] [ 13.236001] Last potentially related work creation: [ 13.236294] kasan_save_stack+0x45/0x70 [ 13.236506] kasan_record_aux_stack+0xb2/0xc0 [ 13.236655] kmem_cache_free+0x132/0x420 [ 13.236922] kmem_cache_rcu_uaf+0x195/0x510 [ 13.237482] kunit_try_run_case+0x1a6/0x480 [ 13.237646] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.237829] kthread+0x324/0x6e0 [ 13.238028] ret_from_fork+0x41/0x80 [ 13.238227] ret_from_fork_asm+0x1a/0x30 [ 13.238434] [ 13.238530] The buggy address belongs to the object at ffff888102ae7000 [ 13.238530] which belongs to the cache test_cache of size 200 [ 13.239011] The buggy address is located 0 bytes inside of [ 13.239011] freed 200-byte region [ffff888102ae7000, ffff888102ae70c8) [ 13.239574] [ 13.239653] The buggy address belongs to the physical page: [ 13.239898] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102ae7 [ 13.240330] flags: 0x200000000000000(node=0|zone=2) [ 13.240571] page_type: f5(slab) [ 13.240726] raw: 0200000000000000 ffff8881011e9c80 dead000000000122 0000000000000000 [ 13.241047] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.241396] page dumped because: kasan: bad access detected [ 13.241600] [ 13.241694] Memory state around the buggy address: [ 13.241914] ffff888102ae6f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.242135] ffff888102ae6f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.242388] >ffff888102ae7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.242856] ^ [ 13.243021] ffff888102ae7080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.243291] ffff888102ae7100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.243943] ==================================================================