Date
Dec. 3, 2024, 11:38 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.419576] ================================================================== [ 31.420642] BUG: KASAN: slab-use-after-free in rcu_uaf_reclaim+0x64/0x70 [ 31.421629] Read of size 4 at addr fff00000c58b0740 by task swapper/0/0 [ 31.422737] [ 31.423083] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G B N 6.13.0-rc1-next-20241203 #1 [ 31.424899] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.425475] Hardware name: linux,dummy-virt (DT) [ 31.426175] Call trace: [ 31.426714] show_stack+0x20/0x38 (C) [ 31.427493] dump_stack_lvl+0x8c/0xd0 [ 31.427800] print_report+0x118/0x5e0 [ 31.428092] kasan_report+0xc8/0x118 [ 31.428461] __asan_report_load4_noabort+0x20/0x30 [ 31.429578] rcu_uaf_reclaim+0x64/0x70 [ 31.430478] rcu_core+0x9f4/0x1e20 [ 31.431425] rcu_core_si+0x18/0x30 [ 31.432376] handle_softirqs+0x374/0xb20 [ 31.433237] __do_softirq+0x1c/0x28 [ 31.433772] ____do_softirq+0x18/0x30 [ 31.434313] call_on_irq_stack+0x24/0x58 [ 31.434941] do_softirq_own_stack+0x24/0x38 [ 31.435913] __irq_exit_rcu+0x1fc/0x318 [ 31.436788] irq_exit_rcu+0x1c/0x80 [ 31.437422] el1_interrupt+0x38/0x58 [ 31.438082] el1h_64_irq_handler+0x18/0x28 [ 31.438762] el1h_64_irq+0x6c/0x70 [ 31.439657] arch_local_irq_enable+0x4/0x8 (P) [ 31.441147] default_idle_call+0x6c/0x78 (L) [ 31.441849] do_idle+0x384/0x4e8 [ 31.442449] cpu_startup_entry+0x64/0x80 [ 31.443243] rest_init+0x160/0x188 [ 31.443833] start_kernel+0x308/0x3d0 [ 31.444143] __primary_switched+0x8c/0xa0 [ 31.444556] [ 31.445001] Allocated by task 187: [ 31.445913] kasan_save_stack+0x3c/0x68 [ 31.446627] kasan_save_track+0x20/0x40 [ 31.447279] kasan_save_alloc_info+0x40/0x58 [ 31.448066] __kasan_kmalloc+0xd4/0xd8 [ 31.448620] __kmalloc_cache_noprof+0x15c/0x3c0 [ 31.449343] rcu_uaf+0xb0/0x2d0 [ 31.449849] kunit_try_run_case+0x14c/0x3d0 [ 31.450495] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.451475] kthread+0x24c/0x2d0 [ 31.451968] ret_from_fork+0x10/0x20 [ 31.452509] [ 31.452827] Freed by task 0: [ 31.453278] kasan_save_stack+0x3c/0x68 [ 31.453983] kasan_save_track+0x20/0x40 [ 31.454626] kasan_save_free_info+0x4c/0x78 [ 31.455572] __kasan_slab_free+0x6c/0x98 [ 31.456205] kfree+0x114/0x3c8 [ 31.456704] rcu_uaf_reclaim+0x28/0x70 [ 31.457233] rcu_core+0x9f4/0x1e20 [ 31.457683] rcu_core_si+0x18/0x30 [ 31.458127] handle_softirqs+0x374/0xb20 [ 31.458841] __do_softirq+0x1c/0x28 [ 31.460548] [ 31.460938] Last potentially related work creation: [ 31.461866] kasan_save_stack+0x3c/0x68 [ 31.462429] kasan_record_aux_stack+0xb4/0xc8 [ 31.463117] __call_rcu_common.constprop.0+0x74/0xa10 [ 31.463824] call_rcu+0x18/0x30 [ 31.464775] rcu_uaf+0x14c/0x2d0 [ 31.465320] kunit_try_run_case+0x14c/0x3d0 [ 31.465974] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.466762] kthread+0x24c/0x2d0 [ 31.467493] ret_from_fork+0x10/0x20 [ 31.468178] [ 31.468565] The buggy address belongs to the object at fff00000c58b0740 [ 31.468565] which belongs to the cache kmalloc-32 of size 32 [ 31.470017] The buggy address is located 0 bytes inside of [ 31.470017] freed 32-byte region [fff00000c58b0740, fff00000c58b0760) [ 31.471721] [ 31.472176] The buggy address belongs to the physical page: [ 31.472889] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1058b0 [ 31.473954] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.474933] page_type: f5(slab) [ 31.475798] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 31.476763] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 31.477682] page dumped because: kasan: bad access detected [ 31.478404] [ 31.478715] Memory state around the buggy address: [ 31.480012] fff00000c58b0600: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.481034] fff00000c58b0680: 00 00 00 fc fc fc fc fc 00 00 05 fc fc fc fc fc [ 31.481934] >fff00000c58b0700: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.483063] ^ [ 31.484390] fff00000c58b0780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.485509] fff00000c58b0800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.486379] ==================================================================
[ 26.886918] ================================================================== [ 26.887687] BUG: KASAN: slab-use-after-free in rcu_uaf_reclaim+0x50/0x60 [ 26.888592] Read of size 4 at addr ffff888102984d40 by task swapper/0/0 [ 26.889567] [ 26.889813] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G B N 6.13.0-rc1-next-20241203 #1 [ 26.891116] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.892106] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.892964] Call Trace: [ 26.893249] <IRQ> [ 26.893458] dump_stack_lvl+0x73/0xb0 [ 26.894281] print_report+0xd1/0x640 [ 26.895118] ? __virt_addr_valid+0x1db/0x2d0 [ 26.895700] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.896208] kasan_report+0x102/0x140 [ 26.896594] ? rcu_uaf_reclaim+0x50/0x60 [ 26.897201] ? rcu_uaf_reclaim+0x50/0x60 [ 26.897847] __asan_report_load4_noabort+0x18/0x20 [ 26.898324] rcu_uaf_reclaim+0x50/0x60 [ 26.898938] rcu_core+0x680/0x1d70 [ 26.899331] ? __pfx_rcu_core+0x10/0x10 [ 26.899883] rcu_core_si+0x12/0x20 [ 26.900129] handle_softirqs+0x209/0x720 [ 26.900367] ? hrtimer_interrupt+0x2fe/0x780 [ 26.900751] ? __pfx_handle_softirqs+0x10/0x10 [ 26.901241] __irq_exit_rcu+0xc9/0x110 [ 26.901572] irq_exit_rcu+0x12/0x20 [ 26.902004] sysvec_apic_timer_interrupt+0x81/0x90 [ 26.902561] </IRQ> [ 26.903006] <TASK> [ 26.903320] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 26.903976] RIP: 0010:default_idle+0xf/0x20 [ 26.905318] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d d3 99 35 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 [ 26.906910] RSP: 0000:ffffffffb1e07df0 EFLAGS: 00010216 [ 26.907653] RAX: ffff88815b000000 RBX: ffffffffb1e1a680 RCX: ffffffffb0b01165 [ 26.908297] RDX: ffffed102b606b23 RSI: 0000000000000004 RDI: 000000000001da0c [ 26.908829] RBP: ffffffffb1e07df8 R08: 0000000000000001 R09: ffffed102b606b22 [ 26.909542] R10: ffff88815b035913 R11: 0000000000000000 R12: 0000000000000000 [ 26.910021] R13: fffffbfff63c34d0 R14: ffffffffb2974110 R15: 0000000000000000 [ 26.911243] ? ct_kernel_exit.constprop.0+0xa5/0xd0 [ 26.911867] ? arch_cpu_idle+0xd/0x20 [ 26.912230] default_idle_call+0x48/0x80 [ 26.912608] do_idle+0x310/0x3c0 [ 26.913332] ? __pfx_do_idle+0x10/0x10 [ 26.913948] ? rest_init+0x10b/0x140 [ 26.914347] cpu_startup_entry+0x5c/0x70 [ 26.914929] rest_init+0x11a/0x140 [ 26.915344] ? acpi_subsystem_init+0x5d/0x150 [ 26.915952] start_kernel+0x320/0x400 [ 26.916484] x86_64_start_reservations+0x1c/0x30 [ 26.916882] x86_64_start_kernel+0xcf/0xe0 [ 26.917294] common_startup_64+0x12c/0x138 [ 26.917747] </TASK> [ 26.918014] [ 26.918921] Allocated by task 207: [ 26.919324] kasan_save_stack+0x3d/0x60 [ 26.919882] kasan_save_track+0x18/0x40 [ 26.920290] kasan_save_alloc_info+0x3b/0x50 [ 26.920951] __kasan_kmalloc+0xb7/0xc0 [ 26.921297] __kmalloc_cache_noprof+0x184/0x410 [ 26.921866] rcu_uaf+0xb1/0x330 [ 26.922874] kunit_try_run_case+0x1b3/0x490 [ 26.923351] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.923915] kthread+0x257/0x310 [ 26.924264] ret_from_fork+0x41/0x80 [ 26.924935] ret_from_fork_asm+0x1a/0x30 [ 26.925359] [ 26.925555] Freed by task 0: [ 26.926125] kasan_save_stack+0x3d/0x60 [ 26.927074] kasan_save_track+0x18/0x40 [ 26.927538] kasan_save_free_info+0x3f/0x60 [ 26.928085] __kasan_slab_free+0x56/0x70 [ 26.928544] kfree+0x123/0x3f0 [ 26.929122] rcu_uaf_reclaim+0x1f/0x60 [ 26.929513] rcu_core+0x680/0x1d70 [ 26.930177] rcu_core_si+0x12/0x20 [ 26.930509] handle_softirqs+0x209/0x720 [ 26.931512] __irq_exit_rcu+0xc9/0x110 [ 26.931910] irq_exit_rcu+0x12/0x20 [ 26.932301] sysvec_apic_timer_interrupt+0x81/0x90 [ 26.932792] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 26.933293] [ 26.933518] Last potentially related work creation: [ 26.934322] kasan_save_stack+0x3d/0x60 [ 26.934676] kasan_record_aux_stack+0xb2/0xc0 [ 26.935042] __call_rcu_common.constprop.0+0x72/0xaa0 [ 26.935984] call_rcu+0x12/0x20 [ 26.936384] rcu_uaf+0x169/0x330 [ 26.936632] kunit_try_run_case+0x1b3/0x490 [ 26.936901] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.937356] kthread+0x257/0x310 [ 26.937805] ret_from_fork+0x41/0x80 [ 26.938635] ret_from_fork_asm+0x1a/0x30 [ 26.939551] [ 26.939863] The buggy address belongs to the object at ffff888102984d40 [ 26.939863] which belongs to the cache kmalloc-32 of size 32 [ 26.941007] The buggy address is located 0 bytes inside of [ 26.941007] freed 32-byte region [ffff888102984d40, ffff888102984d60) [ 26.942373] [ 26.942559] The buggy address belongs to the physical page: [ 26.943141] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102984 [ 26.943496] flags: 0x200000000000000(node=0|zone=2) [ 26.944767] page_type: f5(slab) [ 26.945329] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 26.946131] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 26.947013] page dumped because: kasan: bad access detected [ 26.947544] [ 26.947807] Memory state around the buggy address: [ 26.948369] ffff888102984c00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 26.949241] ffff888102984c80: 00 00 00 fc fc fc fc fc 00 00 05 fc fc fc fc fc [ 26.949985] >ffff888102984d00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 26.951150] ^ [ 26.951638] ffff888102984d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.952704] ffff888102984e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.953414] ==================================================================