syzkaller login: [ 49.058813] BUG: Bad rss-counter state mm:00000000ad8eec88 type:MM_FILEPAGES val:33 [ 49.059882] BUG: Bad rss-counter state mm:00000000ad8eec88 type:MM_ANONPAGES val:22 [ 49.220907] ================================================================== [ 49.221905] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 49.222866] Read of size 8 at addr ffff88800e5d2b38 by task sshd/220 [ 49.223657] [ 49.223881] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 49.224941] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 49.225971] Call Trace: [ 49.226309] [ 49.226618] dump_stack_lvl+0x91/0xf0 [ 49.227126] print_report+0xcc/0x620 [ 49.227622] ? __virt_addr_valid+0x102/0x340 [ 49.228199] ? vma_interval_tree_remove+0xc75/0xec0 [ 49.228836] ? vma_interval_tree_remove+0xc75/0xec0 [ 49.229479] kasan_report+0xbe/0xf0 [ 49.229984] ? vma_interval_tree_remove+0xc75/0xec0 [ 49.230627] vma_interval_tree_remove+0xc75/0xec0 [ 49.231271] vma_prepare+0xc54/0x11a0 [ 49.231767] __split_vma+0x5af/0x950 [ 49.232256] ? __pfx___split_vma+0x10/0x10 [ 49.232805] ? find_held_lock+0x2c/0x110 [ 49.233350] do_vmi_align_munmap+0x2ba/0x11f0 [ 49.233965] ? lock_is_held_type+0x9f/0x120 [ 49.234523] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 49.235156] ? mtree_range_walk+0x632/0x900 [ 49.235731] ? mas_walk+0x5c7/0x7c0 [ 49.236228] do_vmi_munmap+0x1f1/0x2b0 [ 49.236735] mmap_region+0x1f9/0x2660 [ 49.237240] ? vm_mmap_pgoff+0x15c/0x3a0 [ 49.237781] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 49.238517] ? __pfx_lock_acquire+0x10/0x10 [ 49.239063] ? __pfx_mmap_region+0x10/0x10 [ 49.239606] ? security_mmap_addr+0x7d/0xa0 [ 49.240158] ? get_unmapped_area+0x1f5/0x3f0 [ 49.240732] do_mmap+0x854/0xf00 [ 49.241189] vm_mmap_pgoff+0x1a6/0x3a0 [ 49.241714] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 49.242303] ksys_mmap_pgoff+0x3af/0x500 [ 49.242828] do_syscall_64+0x3f/0x90 [ 49.243332] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 49.243995] RIP: 0033:0x7f0339bd8d82 [ 49.244469] 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 [ 49.246692] RSP: 002b:00007ffef05c84a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 49.247632] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f0339bd8d82 [ 49.248514] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f0339012000 [ 49.249400] RBP: 00007f0339012000 R08: 0000000000000009 R09: 0000000000001000 [ 49.250280] R10: 0000000000000812 R11: 0000000000000206 R12: 00005580acf34f70 [ 49.251153] R13: 00007ffef05c84c0 R14: 00007ffef05c84f0 R15: 00007ffef05c8850 [ 49.252011] [ 49.252308] [ 49.252523] Allocated by task 213: [ 49.252969] kasan_save_stack+0x22/0x50 [ 49.253477] kasan_set_track+0x25/0x30 [ 49.253983] __kasan_slab_alloc+0x59/0x70 [ 49.254512] kmem_cache_alloc+0x16b/0x370 [ 49.255034] vm_area_dup+0x20/0x160 [ 49.255491] __split_vma+0x170/0x950 [ 49.255960] split_vma+0xc6/0x110 [ 49.256399] mprotect_fixup+0x8d2/0xb30 [ 49.256901] do_mprotect_pkey+0x87e/0xd40 [ 49.257437] __x64_sys_mprotect+0x78/0xc0 [ 49.257993] do_syscall_64+0x3f/0x90 [ 49.258475] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 49.259121] [ 49.259336] Freed by task 213: [ 49.259726] kasan_save_stack+0x22/0x50 [ 49.260235] kasan_set_track+0x25/0x30 [ 49.260731] kasan_save_free_info+0x2b/0x50 [ 49.261266] __kasan_slab_free+0x10a/0x190 [ 49.261812] kmem_cache_free+0x10d/0x4d0 [ 49.262326] rcu_core+0x8c8/0x2860 [ 49.262769] __do_softirq+0x1b7/0x7d4 [ 49.263245] [ 49.263464] Last potentially related work creation: [ 49.264058] kasan_save_stack+0x22/0x50 [ 49.264568] __kasan_record_aux_stack+0x8e/0xa0 [ 49.265146] __call_rcu_common.constprop.0+0x6a/0xb90 [ 49.265915] remove_vma+0x139/0x170 [ 49.266381] do_vmi_align_munmap+0xd4a/0x11f0 [ 49.266947] do_vmi_munmap+0x1f1/0x2b0 [ 49.267439] __vm_munmap+0x138/0x3a0 [ 49.267908] __x64_sys_munmap+0x59/0x80 [ 49.268406] do_syscall_64+0x3f/0x90 [ 49.268894] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 49.269546] [ 49.269770] The buggy address belongs to the object at ffff88800e5d2ae0 [ 49.269770] which belongs to the cache vm_area_struct of size 168 [ 49.271241] The buggy address is located 88 bytes inside of [ 49.271241] freed 168-byte region [ffff88800e5d2ae0, ffff88800e5d2b88) [ 49.272676] [ 49.272898] The buggy address belongs to the physical page: [ 49.273561] page:00000000571e70c2 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe5d2 [ 49.274661] memcg:ffff8880145e9301 [ 49.275095] flags: 0x100000000000200(slab|node=0|zone=1) [ 49.275747] page_type: 0xffffffff() [ 49.276206] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 49.277145] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880145e9301 [ 49.278081] page dumped because: kasan: bad access detected [ 49.278753] [ 49.278972] Memory state around the buggy address: [ 49.279557] ffff88800e5d2a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 49.280449] ffff88800e5d2a80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 49.281347] >ffff88800e5d2b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.282244] ^ [ 49.282880] ffff88800e5d2b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 49.283779] ffff88800e5d2c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 49.284678] ================================================================== [ 49.285657] Disabling lock debugging due to kernel taint [ 51.423148] BUG: Bad rss-counter state mm:00000000856c733f type:MM_FILEPAGES val:33 [ 51.424519] BUG: Bad rss-counter state mm:00000000856c733f type:MM_ANONPAGES val:22 [ 51.917240] BUG: Bad rss-counter state mm:000000009b06b60c type:MM_FILEPAGES val:33 [ 51.918460] BUG: Bad rss-counter state mm:000000009b06b60c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:41442' (ECDSA) to the list of known hosts. 2023/06/20 03:53:54 fuzzer started 2023/06/20 03:53:54 dialing manager at localhost:44161 2023/06/20 03:53:54 checking machine... 2023/06/20 03:53:54 checking revisions... [ 52.633144] kmemleak: Automatic memory scanning thread ended 2023/06/20 03:53:54 testing simple program... [ 52.689709] cgroup: Unknown subsys name 'net' [ 52.743879] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:53:36 Registers: info registers vcpu 0 RAX=1ffffffff0c96049 RBX=0000000000000001 RCX=ffffffff864b0246 RDX=0000000000000000 RSI=dffffc0000000000 RDI=ffffffff864b0248 RBP=ffff888019c4f950 RSP=ffff888019c4f888 R8 =ffffffff864b024a R9 =ffff888019c4f938 R10=0000000000038001 R11=00000000000b4fb9 R12=ffff888019c4f958 R13=ffff888019c4f940 R14=ffff888019c4ff58 R15=ffff888019c4f8f8 RIP=ffffffff811311c7 RFL=00000212 [----A--] 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 00007f76b6c07900 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=00007f76b71be618 CR3=000000000ea4e000 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=0000000080010001 RBX=0000000000039500 RCX=0000000000000000 RDX=ffff888008d751c0 RSI=0000000000000000 RDI=ffff88806cf39500 RBP=ffff88806cf09dc8 RSP=ffff88806cf09d78 R8 =0000000000000007 R9 =0000000000000000 R10=0000000000000000 R11=ffff88806cf09ff8 R12=ffff88806cf39500 R13=0000000000000001 R14=0000000000000001 R15=ffff888008d751c0 RIP=ffffffff8452fbb5 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 0000000000000000 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=00007fcbbe04fd60 CR3=000000000c82c000 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=2034353a33353a3330203032206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732033353a33353a3330203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000