syzkaller login: [ 41.986688] BUG: Bad rss-counter state mm:000000008fc4a395 type:MM_FILEPAGES val:33 [ 41.987975] BUG: Bad rss-counter state mm:000000008fc4a395 type:MM_ANONPAGES val:22 [ 42.066975] ================================================================== [ 42.067875] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 42.068885] Read of size 8 at addr ffff88800e6875c8 by task sshd/219 [ 42.069670] [ 42.069896] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 42.070750] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 42.071733] Call Trace: [ 42.072055] [ 42.072331] dump_stack_lvl+0x91/0xf0 [ 42.072814] print_report+0xcc/0x620 [ 42.073294] ? __virt_addr_valid+0x102/0x340 [ 42.073865] ? vma_interval_tree_remove+0xc75/0xec0 [ 42.074474] ? vma_interval_tree_remove+0xc75/0xec0 [ 42.075093] kasan_report+0xbe/0xf0 [ 42.075570] ? vma_interval_tree_remove+0xc75/0xec0 [ 42.076208] vma_interval_tree_remove+0xc75/0xec0 [ 42.076786] vma_prepare+0xc54/0x11a0 [ 42.077276] __split_vma+0x5af/0x950 [ 42.077767] ? __pfx___split_vma+0x10/0x10 [ 42.078291] ? find_held_lock+0x2c/0x110 [ 42.078808] do_vmi_align_munmap+0x2ba/0x11f0 [ 42.079368] ? lock_is_held_type+0x9f/0x120 [ 42.079909] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 42.080508] ? mtree_range_walk+0x632/0x900 [ 42.081061] ? mas_walk+0x5c7/0x7c0 [ 42.081537] do_vmi_munmap+0x1f1/0x2b0 [ 42.082031] mmap_region+0x1f9/0x2660 [ 42.082509] ? vm_mmap_pgoff+0x15c/0x3a0 [ 42.083021] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 42.083718] ? __pfx_lock_acquire+0x10/0x10 [ 42.084243] ? __pfx_mmap_region+0x10/0x10 [ 42.084767] ? security_mmap_addr+0x7d/0xa0 [ 42.085294] ? get_unmapped_area+0x1f5/0x3f0 [ 42.085864] do_mmap+0x854/0xf00 [ 42.086305] vm_mmap_pgoff+0x1a6/0x3a0 [ 42.086791] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 42.087347] ksys_mmap_pgoff+0x3af/0x500 [ 42.087857] do_syscall_64+0x3f/0x90 [ 42.088332] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 42.088970] RIP: 0033:0x7f69248d4d82 [ 42.089421] 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 [ 42.091553] RSP: 002b:00007ffe1ab39108 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 42.092453] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f69248d4d82 [ 42.093294] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f6923d0e000 [ 42.094149] RBP: 00007f6923d0e000 R08: 0000000000000009 R09: 0000000000001000 [ 42.094977] R10: 0000000000000812 R11: 0000000000000206 R12: 0000556cfd962f70 [ 42.095816] R13: 00007ffe1ab39120 R14: 00007ffe1ab39150 R15: 00007ffe1ab394b0 [ 42.096656] [ 42.096953] [ 42.097165] Allocated by task 212: [ 42.097590] kasan_save_stack+0x22/0x50 [ 42.098094] kasan_set_track+0x25/0x30 [ 42.098580] __kasan_slab_alloc+0x59/0x70 [ 42.099101] kmem_cache_alloc+0x16b/0x370 [ 42.099611] vm_area_dup+0x20/0x160 [ 42.100058] __split_vma+0x170/0x950 [ 42.100528] split_vma+0xc6/0x110 [ 42.100960] mprotect_fixup+0x8d2/0xb30 [ 42.101456] do_mprotect_pkey+0x87e/0xd40 [ 42.101994] __x64_sys_mprotect+0x78/0xc0 [ 42.102514] do_syscall_64+0x3f/0x90 [ 42.102974] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 42.103597] [ 42.103818] Freed by task 212: [ 42.104211] kasan_save_stack+0x22/0x50 [ 42.104701] kasan_set_track+0x25/0x30 [ 42.105189] kasan_save_free_info+0x2b/0x50 [ 42.105723] __kasan_slab_free+0x10a/0x190 [ 42.106257] kmem_cache_free+0x10d/0x4d0 [ 42.106772] rcu_core+0x8c8/0x2860 [ 42.107213] __do_softirq+0x1b7/0x7d4 [ 42.107689] [ 42.107906] Last potentially related work creation: [ 42.108491] kasan_save_stack+0x22/0x50 [ 42.108996] __kasan_record_aux_stack+0x8e/0xa0 [ 42.109578] __call_rcu_common.constprop.0+0x6a/0xb90 [ 42.110222] remove_vma+0x139/0x170 [ 42.110651] do_vmi_align_munmap+0xd4a/0x11f0 [ 42.111179] do_vmi_munmap+0x1f1/0x2b0 [ 42.111646] __vm_munmap+0x138/0x3a0 [ 42.112085] __x64_sys_munmap+0x59/0x80 [ 42.112555] do_syscall_64+0x3f/0x90 [ 42.113009] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 42.113615] [ 42.113841] Second to last potentially related work creation: [ 42.114483] kasan_save_stack+0x22/0x50 [ 42.114959] __kasan_record_aux_stack+0x8e/0xa0 [ 42.115501] __call_rcu_common.constprop.0+0x6a/0xb90 [ 42.116112] remove_vma+0x139/0x170 [ 42.116538] do_vmi_align_munmap+0xd4a/0x11f0 [ 42.117061] do_vmi_munmap+0x1f1/0x2b0 [ 42.117524] __vm_munmap+0x138/0x3a0 [ 42.117970] elf_map+0x26f/0x310 [ 42.118390] load_elf_binary+0xd82/0x5030 [ 42.118891] bprm_execve+0x803/0x1940 [ 42.119329] do_execveat_common+0x734/0x8e0 [ 42.119832] __x64_sys_execve+0x93/0xc0 [ 42.120315] do_syscall_64+0x3f/0x90 [ 42.120783] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 42.121425] [ 42.121639] The buggy address belongs to the object at ffff88800e687570 [ 42.121639] which belongs to the cache vm_area_struct of size 168 [ 42.123101] The buggy address is located 88 bytes inside of [ 42.123101] freed 168-byte region [ffff88800e687570, ffff88800e687618) [ 42.124493] [ 42.124705] The buggy address belongs to the physical page: [ 42.125356] page:0000000084f01417 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe687 [ 42.126453] memcg:ffff88800e89eb01 [ 42.126873] flags: 0x100000000000200(slab|node=0|zone=1) [ 42.127520] page_type: 0xffffffff() [ 42.127967] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 42.128892] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e89eb01 [ 42.129792] page dumped because: kasan: bad access detected [ 42.130460] [ 42.130675] Memory state around the buggy address: [ 42.131248] ffff88800e687480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 42.132097] ffff88800e687500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 42.132939] >ffff88800e687580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 42.133796] ^ [ 42.134468] ffff88800e687600: fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 [ 42.135320] ffff88800e687680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 42.136165] ================================================================== [ 42.137136] Disabling lock debugging due to kernel taint [ 44.210687] BUG: Bad rss-counter state mm:000000004bb1b0d2 type:MM_FILEPAGES val:33 [ 44.211877] BUG: Bad rss-counter state mm:000000004bb1b0d2 type:MM_ANONPAGES val:22 [ 44.595112] BUG: Bad rss-counter state mm:000000000aef27ca type:MM_FILEPAGES val:33 [ 44.596118] BUG: Bad rss-counter state mm:000000000aef27ca type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:64737' (ECDSA) to the list of known hosts. 2023/06/19 23:22:04 fuzzer started 2023/06/19 23:22:04 dialing manager at localhost:44161 2023/06/19 23:22:04 checking machine... 2023/06/19 23:22:04 checking revisions... [ 45.350579] kmemleak: Automatic memory scanning thread ended 2023/06/19 23:22:04 testing simple program... [ 45.392993] cgroup: Unknown subsys name 'net' [ 45.443975] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 23:22:01 Registers: info registers vcpu 0 RAX=0000000000000003 RBX=0000000000000287 RCX=1ffffffff0ba7a02 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff8452fffc RBP=ffffffff856d8220 RSP=ffff88800b897710 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3bed7 R11=00000000000b6996 R12=0000000000000287 R13=ffff888008f38638 R14=ffffffff83677d48 R15=ffff888014692600 RIP=ffffffff84530004 RFL=00000286 [--S--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 00007f760137c900 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=00007f7601933618 CR3=00000000199f4000 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=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 info registers vcpu 1 RAX=ffff888013fc3130 RBX=ffff888013fc3130 RCX=00000000000d000a RDX=00000000800d000a RSI=ffff888013fc3130 RDI=ffff88800844e900 RBP=ffff88801466fc68 RSP=ffff88801466fbe0 R8 =00000000000d000a R9 =ffffed10028cdf6a R10=0000000000000003 R11=00000000000d000c R12=ffff88800844f780 R13=ffff88800844e900 R14=ffffea00004ff0c0 R15=00000000800d000a RIP=ffffffff81805cbb RFL=00000042 [---Z---] 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 00007f0d2e7fd900 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=00007f0d2dd1f030 CR3=000000000d948000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=f44935cb7f717f4300000000000ae988 XMM05=64126000032027920000000000136d40 XMM06=19e9129bd510f2350000000000135bd8 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000