Date
Nov. 22, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 34.797230] ================================================================== [ 34.798764] BUG: KASAN: slab-use-after-free in rcu_uaf_reclaim+0x64/0x70 [ 34.799800] Read of size 4 at addr fff00000c6a708c0 by task swapper/0/0 [ 34.800558] [ 34.800945] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G B N 6.12.0-next-20241122 #1 [ 34.802111] Tainted: [B]=BAD_PAGE, [N]=TEST [ 34.803278] Hardware name: linux,dummy-virt (DT) [ 34.805311] Call trace: [ 34.805832] show_stack+0x20/0x38 (C) [ 34.806638] dump_stack_lvl+0x8c/0xd0 [ 34.807362] print_report+0x118/0x5e0 [ 34.808199] kasan_report+0xc8/0x118 [ 34.809111] __asan_report_load4_noabort+0x20/0x30 [ 34.810373] rcu_uaf_reclaim+0x64/0x70 [ 34.811162] rcu_core+0xa54/0x1df8 [ 34.811907] rcu_core_si+0x18/0x30 [ 34.812592] handle_softirqs+0x374/0xb20 [ 34.813574] __do_softirq+0x1c/0x28 [ 34.814217] ____do_softirq+0x18/0x30 [ 34.814684] call_on_irq_stack+0x24/0x58 [ 34.815244] do_softirq_own_stack+0x24/0x38 [ 34.815717] __irq_exit_rcu+0x1fc/0x318 [ 34.817580] irq_exit_rcu+0x1c/0x80 [ 34.818580] el1_interrupt+0x38/0x58 [ 34.819673] el1h_64_irq_handler+0x18/0x28 [ 34.820562] el1h_64_irq+0x6c/0x70 [ 34.821630] arch_local_irq_enable+0x4/0x8 (P) [ 34.822593] default_idle_call+0x6c/0x78 (L) [ 34.823712] do_idle+0x384/0x4e8 [ 34.824406] cpu_startup_entry+0x64/0x80 [ 34.825264] rest_init+0x160/0x188 [ 34.826254] start_kernel+0x308/0x3d0 [ 34.826921] __primary_switched+0x8c/0xa0 [ 34.827518] [ 34.827896] Allocated by task 187: [ 34.828338] kasan_save_stack+0x3c/0x68 [ 34.829724] kasan_save_track+0x20/0x40 [ 34.830357] kasan_save_alloc_info+0x40/0x58 [ 34.831069] __kasan_kmalloc+0xd4/0xd8 [ 34.831801] __kmalloc_cache_noprof+0x15c/0x3c8 [ 34.832498] rcu_uaf+0xb0/0x2d0 [ 34.833322] kunit_try_run_case+0x14c/0x3d0 [ 34.834663] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.835931] kthread+0x24c/0x2d0 [ 34.836927] ret_from_fork+0x10/0x20 [ 34.837694] [ 34.838306] Freed by task 0: [ 34.838739] kasan_save_stack+0x3c/0x68 [ 34.839246] kasan_save_track+0x20/0x40 [ 34.839913] kasan_save_free_info+0x4c/0x78 [ 34.840718] __kasan_slab_free+0x6c/0x98 [ 34.841705] kfree+0x114/0x3d0 [ 34.842346] rcu_uaf_reclaim+0x28/0x70 [ 34.842944] rcu_core+0xa54/0x1df8 [ 34.843468] rcu_core_si+0x18/0x30 [ 34.843923] handle_softirqs+0x374/0xb20 [ 34.845142] __do_softirq+0x1c/0x28 [ 34.845687] [ 34.846078] Last potentially related work creation: [ 34.847144] kasan_save_stack+0x3c/0x68 [ 34.847969] __kasan_record_aux_stack+0xbc/0xe8 [ 34.848940] kasan_record_aux_stack_noalloc+0x14/0x20 [ 34.850103] __call_rcu_common.constprop.0+0x74/0xa18 [ 34.850899] call_rcu+0x18/0x30 [ 34.851359] rcu_uaf+0x14c/0x2d0 [ 34.851941] kunit_try_run_case+0x14c/0x3d0 [ 34.852897] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.854090] kthread+0x24c/0x2d0 [ 34.854580] ret_from_fork+0x10/0x20 [ 34.855337] [ 34.855705] The buggy address belongs to the object at fff00000c6a708c0 [ 34.855705] which belongs to the cache kmalloc-32 of size 32 [ 34.858007] The buggy address is located 0 bytes inside of [ 34.858007] freed 32-byte region [fff00000c6a708c0, fff00000c6a708e0) [ 34.859427] [ 34.859813] The buggy address belongs to the physical page: [ 34.861071] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106a70 [ 34.862688] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.863550] page_type: f5(slab) [ 34.864034] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 34.866791] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 34.867746] page dumped because: kasan: bad access detected [ 34.868511] [ 34.868961] Memory state around the buggy address: [ 34.869785] fff00000c6a70780: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 34.871041] fff00000c6a70800: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 34.871755] >fff00000c6a70880: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 34.873545] ^ [ 34.874350] fff00000c6a70900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.875953] fff00000c6a70980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.877402] ==================================================================
[ 26.034136] ================================================================== [ 26.034616] BUG: KASAN: slab-use-after-free in rcu_uaf_reclaim+0x50/0x60 [ 26.034876] Read of size 4 at addr ffff888101ab0500 by task swapper/0/0 [ 26.035075] [ 26.035172] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G B N 6.12.0-next-20241122 #1 [ 26.035438] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.035571] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.035818] Call Trace: [ 26.036520] <IRQ> [ 26.037039] dump_stack_lvl+0x73/0xb0 [ 26.037515] print_report+0xd1/0x640 [ 26.038042] ? __virt_addr_valid+0x1db/0x2d0 [ 26.038574] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.039018] kasan_report+0x102/0x140 [ 26.039290] ? rcu_uaf_reclaim+0x50/0x60 [ 26.039567] ? rcu_uaf_reclaim+0x50/0x60 [ 26.039869] __asan_report_load4_noabort+0x18/0x20 [ 26.040329] rcu_uaf_reclaim+0x50/0x60 [ 26.040853] rcu_core+0x680/0x1d70 [ 26.041616] ? __pfx_rcu_core+0x10/0x10 [ 26.042412] ? ktime_get+0x69/0x150 [ 26.044643] ? handle_softirqs+0x18e/0x720 [ 26.045486] rcu_core_si+0x12/0x20 [ 26.046388] handle_softirqs+0x209/0x720 [ 26.046964] ? hrtimer_interrupt+0x2fe/0x780 [ 26.047692] ? __pfx_handle_softirqs+0x10/0x10 [ 26.048697] __irq_exit_rcu+0xc9/0x110 [ 26.049751] irq_exit_rcu+0x12/0x20 [ 26.050104] sysvec_apic_timer_interrupt+0x81/0x90 [ 26.051038] </IRQ> [ 26.051236] <TASK> [ 26.051414] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 26.052854] RIP: 0010:default_idle+0xf/0x20 [ 26.053818] 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 13 f0 34 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 [ 26.055801] RSP: 0000:ffffffff89c07df0 EFLAGS: 00010206 [ 26.057127] RAX: ffff88815b000000 RBX: ffffffff89c1a680 RCX: ffffffff8890b925 [ 26.057853] RDX: ffffed102b606b23 RSI: 0000000000000004 RDI: 00000000000864c4 [ 26.058446] RBP: ffffffff89c07df8 R08: 0000000000000001 R09: ffffed102b606b22 [ 26.059875] R10: ffff88815b035913 R11: 0000000000000000 R12: 0000000000000000 [ 26.060955] R13: fffffbfff13834d0 R14: ffffffff8a772650 R15: 0000000000000000 [ 26.061799] ? ct_kernel_exit.constprop.0+0xa5/0xd0 [ 26.062115] ? arch_cpu_idle+0xd/0x20 [ 26.062271] default_idle_call+0x48/0x80 [ 26.062420] do_idle+0x310/0x3c0 [ 26.062560] ? __pfx_do_idle+0x10/0x10 [ 26.062713] cpu_startup_entry+0x5c/0x70 [ 26.062932] rest_init+0x11a/0x140 [ 26.063307] ? acpi_subsystem_init+0x5d/0x150 [ 26.065403] start_kernel+0x320/0x400 [ 26.065814] x86_64_start_reservations+0x1c/0x30 [ 26.066739] x86_64_start_kernel+0xcf/0xe0 [ 26.067788] common_startup_64+0x12c/0x138 [ 26.068386] </TASK> [ 26.068565] [ 26.068693] Allocated by task 206: [ 26.069066] kasan_save_stack+0x3d/0x60 [ 26.069480] kasan_save_track+0x18/0x40 [ 26.069916] kasan_save_alloc_info+0x3b/0x50 [ 26.070368] __kasan_kmalloc+0xb7/0xc0 [ 26.070702] __kmalloc_cache_noprof+0x184/0x410 [ 26.071435] rcu_uaf+0xb1/0x330 [ 26.071787] kunit_try_run_case+0x1b3/0x490 [ 26.073057] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.073586] kthread+0x257/0x310 [ 26.074130] ret_from_fork+0x41/0x80 [ 26.074622] ret_from_fork_asm+0x1a/0x30 [ 26.075378] [ 26.075608] Freed by task 0: [ 26.076597] kasan_save_stack+0x3d/0x60 [ 26.077209] kasan_save_track+0x18/0x40 [ 26.077572] kasan_save_free_info+0x3f/0x60 [ 26.078024] __kasan_slab_free+0x56/0x70 [ 26.078550] kfree+0x123/0x3f0 [ 26.079159] rcu_uaf_reclaim+0x1f/0x60 [ 26.079663] rcu_core+0x680/0x1d70 [ 26.080674] rcu_core_si+0x12/0x20 [ 26.081188] handle_softirqs+0x209/0x720 [ 26.081776] __irq_exit_rcu+0xc9/0x110 [ 26.082309] irq_exit_rcu+0x12/0x20 [ 26.082905] sysvec_apic_timer_interrupt+0x81/0x90 [ 26.083717] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 26.084467] [ 26.084688] Last potentially related work creation: [ 26.085604] kasan_save_stack+0x3d/0x60 [ 26.086329] __kasan_record_aux_stack+0xae/0xc0 [ 26.087104] kasan_record_aux_stack_noalloc+0xf/0x20 [ 26.087685] __call_rcu_common.constprop.0+0x72/0xaa0 [ 26.088316] call_rcu+0x12/0x20 [ 26.088793] rcu_uaf+0x169/0x330 [ 26.089219] kunit_try_run_case+0x1b3/0x490 [ 26.089491] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.090035] kthread+0x257/0x310 [ 26.090396] ret_from_fork+0x41/0x80 [ 26.090672] ret_from_fork_asm+0x1a/0x30 [ 26.091952] [ 26.092205] The buggy address belongs to the object at ffff888101ab0500 [ 26.092205] which belongs to the cache kmalloc-32 of size 32 [ 26.093900] The buggy address is located 0 bytes inside of [ 26.093900] freed 32-byte region [ffff888101ab0500, ffff888101ab0520) [ 26.094658] [ 26.094912] The buggy address belongs to the physical page: [ 26.095375] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ab0 [ 26.096138] flags: 0x200000000000000(node=0|zone=2) [ 26.096485] page_type: f5(slab) [ 26.097326] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 26.098207] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 26.098773] page dumped because: kasan: bad access detected [ 26.099474] [ 26.099756] Memory state around the buggy address: [ 26.100393] ffff888101ab0400: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 26.101011] ffff888101ab0480: 00 00 05 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 26.102070] >ffff888101ab0500: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 26.102759] ^ [ 26.103093] ffff888101ab0580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.103847] ffff888101ab0600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.104518] ==================================================================