syzkaller login: [ 29.167591] BUG: Bad rss-counter state mm:0000000096e7ff7c type:MM_FILEPAGES val:33 [ 29.169589] BUG: Bad rss-counter state mm:0000000096e7ff7c type:MM_ANONPAGES val:22 [ 29.338378] ================================================================== [ 29.339393] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.340446] Read of size 8 at addr ffff888009b5ca50 by task sshd/220 [ 29.341342] [ 29.341590] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 29.342656] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.343753] Call Trace: [ 29.344150] [ 29.344472] dump_stack_lvl+0x91/0xf0 [ 29.345021] print_report+0xcc/0x620 [ 29.345579] ? __virt_addr_valid+0x102/0x340 [ 29.346202] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.346837] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.347442] kasan_report+0xbe/0xf0 [ 29.347915] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.348544] vma_interval_tree_remove+0xc75/0xec0 [ 29.349142] vma_prepare+0xc54/0x11a0 [ 29.349628] __split_vma+0x5af/0x950 [ 29.350091] ? __pfx___split_vma+0x10/0x10 [ 29.350617] ? find_held_lock+0x2c/0x110 [ 29.351130] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.351698] ? lock_is_held_type+0x9f/0x120 [ 29.352228] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.352829] ? mtree_range_walk+0x632/0x900 [ 29.353395] ? mas_walk+0x5c7/0x7c0 [ 29.353870] do_vmi_munmap+0x1f1/0x2b0 [ 29.354361] mmap_region+0x1f9/0x2660 [ 29.354841] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.355351] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.356069] ? __pfx_lock_acquire+0x10/0x10 [ 29.356597] ? __pfx_mmap_region+0x10/0x10 [ 29.357125] ? security_mmap_addr+0x7d/0xa0 [ 29.357673] ? get_unmapped_area+0x1f5/0x3f0 [ 29.358220] do_mmap+0x854/0xf00 [ 29.358661] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.359156] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.359715] ksys_mmap_pgoff+0x3af/0x500 [ 29.360221] do_syscall_64+0x3f/0x90 [ 29.360693] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.361361] RIP: 0033:0x7f0a914e6d82 [ 29.361811] Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00 [ 29.363931] RSP: 002b:00007fff70ba40f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.364832] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f0a914e6d82 [ 29.365681] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f0a90920000 [ 29.366520] RBP: 00007f0a90920000 R08: 0000000000000009 R09: 0000000000001000 [ 29.367356] R10: 0000000000000812 R11: 0000000000000206 R12: 00005574aa83dec0 [ 29.368201] R13: 00007fff70ba4110 R14: 00007fff70ba4140 R15: 00007fff70ba44a0 [ 29.369058] [ 29.369369] [ 29.369583] Allocated by task 213: [ 29.370008] kasan_save_stack+0x22/0x50 [ 29.370511] kasan_set_track+0x25/0x30 [ 29.371005] __kasan_slab_alloc+0x59/0x70 [ 29.371528] kmem_cache_alloc+0x16b/0x370 [ 29.372036] vm_area_dup+0x20/0x160 [ 29.372483] __split_vma+0x170/0x950 [ 29.372947] split_vma+0xc6/0x110 [ 29.373385] mprotect_fixup+0x8d2/0xb30 [ 29.373881] do_mprotect_pkey+0x87e/0xd40 [ 29.374400] __x64_sys_mprotect+0x78/0xc0 [ 29.374919] do_syscall_64+0x3f/0x90 [ 29.375391] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.376020] [ 29.376231] Freed by task 13: [ 29.376611] kasan_save_stack+0x22/0x50 [ 29.377109] kasan_set_track+0x25/0x30 [ 29.377611] kasan_save_free_info+0x2b/0x50 [ 29.378139] __kasan_slab_free+0x10a/0x190 [ 29.378669] kmem_cache_free+0x10d/0x4d0 [ 29.379172] rcu_core+0x8c8/0x2860 [ 29.379608] __do_softirq+0x1b7/0x7d4 [ 29.380077] [ 29.380289] Last potentially related work creation: [ 29.380866] kasan_save_stack+0x22/0x50 [ 29.381373] __kasan_record_aux_stack+0x8e/0xa0 [ 29.381947] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.382587] remove_vma+0x139/0x170 [ 29.383036] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.383591] do_vmi_munmap+0x1f1/0x2b0 [ 29.384069] __vm_munmap+0x138/0x3a0 [ 29.384535] __x64_sys_munmap+0x59/0x80 [ 29.385025] do_syscall_64+0x3f/0x90 [ 29.385507] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.386145] [ 29.386356] The buggy address belongs to the object at ffff888009b5c9f8 [ 29.386356] which belongs to the cache vm_area_struct of size 168 [ 29.387811] The buggy address is located 88 bytes inside of [ 29.387811] freed 168-byte region [ffff888009b5c9f8, ffff888009b5caa0) [ 29.389204] [ 29.389433] The buggy address belongs to the physical page: [ 29.390089] page:00000000c07bdc8a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9b5c [ 29.391164] memcg:ffff888015ecbf01 [ 29.391589] flags: 0x100000000000200(slab|node=0|zone=1) [ 29.392229] page_type: 0xffffffff() [ 29.392676] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 29.393594] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888015ecbf01 [ 29.394486] page dumped because: kasan: bad access detected [ 29.395134] [ 29.395346] Memory state around the buggy address: [ 29.395920] ffff888009b5c900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.396774] ffff888009b5c980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 29.397638] >ffff888009b5ca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.398482] ^ [ 29.399175] ffff888009b5ca80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 29.400031] ffff888009b5cb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.400878] ================================================================== [ 29.401934] Disabling lock debugging due to kernel taint [ 31.462451] BUG: Bad rss-counter state mm:0000000034517100 type:MM_FILEPAGES val:33 [ 31.463651] BUG: Bad rss-counter state mm:0000000034517100 type:MM_ANONPAGES val:22 [ 31.902557] BUG: Bad rss-counter state mm:0000000086f1e8f8 type:MM_FILEPAGES val:33 [ 31.903632] BUG: Bad rss-counter state mm:0000000086f1e8f8 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:13150' (ECDSA) to the list of known hosts. 2023/06/20 07:41:52 fuzzer started 2023/06/20 07:41:52 dialing manager at localhost:44161 2023/06/20 07:41:52 checking machine... 2023/06/20 07:41:52 checking revisions... [ 32.595415] kmemleak: Automatic memory scanning thread ended 2023/06/20 07:41:52 testing simple program... [ 32.635925] cgroup: Unknown subsys name 'net' [ 32.688095] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:41:51 Registers: info registers vcpu 0 RAX=00000000000005f0 RBX=ffffffff86055ff4 RCX=ffffffff86605972 RDX=00000000000005f0 RSI=ffffffff860723cc RDI=ffffffff85d793d4 RBP=ffffffff86054830 RSP=ffff88806ce099e0 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b5420 R12=ffffffff86055ff0 R13=ffffffff85d793d4 R14=ffffffff8605482c R15=dffffc0000000000 RIP=ffffffff8112fc6b RFL=00000206 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f2bf542a310 CR3=0000000013a84000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=5d69b1cf62ad8f937a4dd039920e0b95 XMM02=0000000000120098eff9b2d0a8fce9cb XMM03=00000000001201682c67c8bc2e329bc3 XMM04=ce0096e336bbd50000000000000ae988 XMM05=19e9129bd510f2350000000000134400 XMM06=57d1e6833a65451e0000000000133268 XMM07=e042d86d42eb936e0000000000124ac0 XMM08=124f516c93c46a3b0000000000120168 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=ffff88800c5d51c0 RSI=0000000000000000 RDI=00000000000000ff RBP=0000000000000000 RSP=ffff88800fbd7508 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6996 R12=0000000000000000 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff83ab3f43 RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007ff35d5c0900 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007ff35db77618 CR3=000000000c960000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000