syzkaller login: [ 33.659836] BUG: Bad rss-counter state mm:00000000eda5ce75 type:MM_FILEPAGES val:33 [ 33.660863] BUG: Bad rss-counter state mm:00000000eda5ce75 type:MM_ANONPAGES val:22 [ 33.825161] ================================================================== [ 33.826093] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 33.827027] Read of size 8 at addr ffff88801598e4e0 by task sshd/218 [ 33.827806] [ 33.828024] CPU: 1 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 33.829066] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 33.830048] Call Trace: [ 33.830385] [ 33.830686] dump_stack_lvl+0x91/0xf0 [ 33.831179] print_report+0xcc/0x620 [ 33.831669] ? __virt_addr_valid+0x102/0x340 [ 33.832230] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.832853] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.833492] kasan_report+0xbe/0xf0 [ 33.833990] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.834662] vma_interval_tree_remove+0xc75/0xec0 [ 33.835389] vma_prepare+0xc54/0x11a0 [ 33.835992] __split_vma+0x5af/0x950 [ 33.836469] ? __pfx___split_vma+0x10/0x10 [ 33.837011] ? find_held_lock+0x2c/0x110 [ 33.837539] do_vmi_align_munmap+0x2ba/0x11f0 [ 33.838139] ? lock_is_held_type+0x9f/0x120 [ 33.838682] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 33.839308] ? mtree_range_walk+0x632/0x900 [ 33.839872] ? mas_walk+0x5c7/0x7c0 [ 33.840350] do_vmi_munmap+0x1f1/0x2b0 [ 33.840861] mmap_region+0x1f9/0x2660 [ 33.841346] ? vm_mmap_pgoff+0x15c/0x3a0 [ 33.841882] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 33.842622] ? __pfx_lock_acquire+0x10/0x10 [ 33.843174] ? __pfx_mmap_region+0x10/0x10 [ 33.843707] ? security_mmap_addr+0x7d/0xa0 [ 33.844296] ? get_unmapped_area+0x1f5/0x3f0 [ 33.844866] do_mmap+0x854/0xf00 [ 33.845309] vm_mmap_pgoff+0x1a6/0x3a0 [ 33.845812] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 33.846425] ksys_mmap_pgoff+0x3af/0x500 [ 33.846945] do_syscall_64+0x3f/0x90 [ 33.847431] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.848088] RIP: 0033:0x7f5eae285d82 [ 33.848552] 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 [ 33.850747] RSP: 002b:00007fffc3896548 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 33.851660] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f5eae285d82 [ 33.852510] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f5ead6bf000 [ 33.853372] RBP: 00007f5ead6bf000 R08: 0000000000000009 R09: 0000000000001000 [ 33.854223] R10: 0000000000000812 R11: 0000000000000206 R12: 00005571e04cbd90 [ 33.855069] R13: 00007fffc3896560 R14: 00007fffc3896590 R15: 00007fffc38968f0 [ 33.855923] [ 33.856214] [ 33.856429] Allocated by task 211: [ 33.856858] kasan_save_stack+0x22/0x50 [ 33.857363] kasan_set_track+0x25/0x30 [ 33.857864] __kasan_slab_alloc+0x59/0x70 [ 33.858409] kmem_cache_alloc+0x16b/0x370 [ 33.858926] vm_area_dup+0x20/0x160 [ 33.859391] __split_vma+0x170/0x950 [ 33.859867] split_vma+0xc6/0x110 [ 33.860305] mprotect_fixup+0x8d2/0xb30 [ 33.860811] do_mprotect_pkey+0x87e/0xd40 [ 33.861345] __x64_sys_mprotect+0x78/0xc0 [ 33.861862] do_syscall_64+0x3f/0x90 [ 33.862346] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.862994] [ 33.863211] Freed by task 202: [ 33.863602] kasan_save_stack+0x22/0x50 [ 33.864116] kasan_set_track+0x25/0x30 [ 33.864625] kasan_save_free_info+0x2b/0x50 [ 33.865168] __kasan_slab_free+0x10a/0x190 [ 33.865706] kmem_cache_free+0x10d/0x4d0 [ 33.866225] rcu_core+0x8c8/0x2860 [ 33.866680] __do_softirq+0x1b7/0x7d4 [ 33.867168] [ 33.867394] Last potentially related work creation: [ 33.867988] kasan_save_stack+0x22/0x50 [ 33.868507] __kasan_record_aux_stack+0x8e/0xa0 [ 33.869092] __call_rcu_common.constprop.0+0x6a/0xb90 [ 33.869821] remove_vma+0x139/0x170 [ 33.870288] do_vmi_align_munmap+0xd4a/0x11f0 [ 33.870862] do_vmi_munmap+0x1f1/0x2b0 [ 33.871360] __vm_munmap+0x138/0x3a0 [ 33.871832] __x64_sys_munmap+0x59/0x80 [ 33.872347] do_syscall_64+0x3f/0x90 [ 33.872839] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.873493] [ 33.873711] Second to last potentially related work creation: [ 33.874408] kasan_save_stack+0x22/0x50 [ 33.874911] __kasan_record_aux_stack+0x8e/0xa0 [ 33.875487] __call_rcu_common.constprop.0+0x6a/0xb90 [ 33.876126] remove_vma+0x139/0x170 [ 33.876583] do_vmi_align_munmap+0xd4a/0x11f0 [ 33.877143] do_vmi_munmap+0x1f1/0x2b0 [ 33.877633] __vm_munmap+0x138/0x3a0 [ 33.878124] elf_map+0x26f/0x310 [ 33.878569] load_elf_binary+0xd82/0x5030 [ 33.879095] bprm_execve+0x803/0x1940 [ 33.879573] do_execveat_common+0x734/0x8e0 [ 33.880100] __x64_sys_execve+0x93/0xc0 [ 33.880593] do_syscall_64+0x3f/0x90 [ 33.881068] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.881728] [ 33.881946] The buggy address belongs to the object at ffff88801598e488 [ 33.881946] which belongs to the cache vm_area_struct of size 168 [ 33.883456] The buggy address is located 88 bytes inside of [ 33.883456] freed 168-byte region [ffff88801598e488, ffff88801598e530) [ 33.884878] [ 33.885102] The buggy address belongs to the physical page: [ 33.885793] page:00000000c34bb932 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1598e [ 33.886927] memcg:ffff88800e002e01 [ 33.887368] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 33.888073] page_type: 0xffffffff() [ 33.888531] raw: 0100000000000200 ffff88800879fc80 ffffea0000363500 dead000000000007 [ 33.889466] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e002e01 [ 33.890412] page dumped because: kasan: bad access detected [ 33.891071] [ 33.891299] Memory state around the buggy address: [ 33.891878] ffff88801598e380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 33.892732] ffff88801598e400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 33.893591] >ffff88801598e480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.894461] ^ [ 33.895230] ffff88801598e500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb [ 33.896108] ffff88801598e580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.896983] ================================================================== [ 33.897904] Disabling lock debugging due to kernel taint [ 36.189037] BUG: Bad rss-counter state mm:0000000026917203 type:MM_FILEPAGES val:33 [ 36.190271] BUG: Bad rss-counter state mm:0000000026917203 type:MM_ANONPAGES val:22 [ 36.625283] BUG: Bad rss-counter state mm:000000000ee2b6ea type:MM_FILEPAGES val:33 [ 36.626316] BUG: Bad rss-counter state mm:000000000ee2b6ea type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:53038' (ECDSA) to the list of known hosts. 2023/06/19 17:50:51 fuzzer started 2023/06/19 17:50:51 dialing manager at localhost:44161 2023/06/19 17:50:51 checking machine... 2023/06/19 17:50:51 checking revisions... [ 37.326901] kmemleak: Automatic memory scanning thread ended 2023/06/19 17:50:52 testing simple program... [ 37.375732] cgroup: Unknown subsys name 'net' [ 37.428137] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 17:50:48 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 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=00007f5a691cf3d8 CR3=000000000ca14000 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=3c28f4b4bfd8eebab44767185c823d09 XMM02=000000000011da10eff9b2d0a8fce9cb XMM03=000000000011dae02c67c8bc2e329bc3 XMM04=330457730f54169b00000000000ae988 XMM05=751b9502027dc0b90000000000134ff8 XMM06=bdf2e299e47b49d50000000000134e80 XMM07=e042d86d42eb936e0000000000124310 XMM08=789766664d063838000000000011dae0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=0000000000000001 RCX=ffffffff813c0064 RDX=0000000000000001 RSI=0000000000000001 RDI=0000000000000000 RBP=ffff88806cf2ba08 RSP=ffff88806cf09b88 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=0000000000000001 R12=ffff88806cf2c250 R13=ffff88806cf2b940 R14=ffff88806cf2b9c0 R15=dffffc0000000000 RIP=ffffffff814c0328 RFL=00000046 [---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 00007f8e5bb78900 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=00007f8e5c12f618 CR3=0000000016862000 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