syzkaller login: [ 38.826488] BUG: Bad rss-counter state mm:00000000be49f335 type:MM_FILEPAGES val:33 [ 38.827491] BUG: Bad rss-counter state mm:00000000be49f335 type:MM_ANONPAGES val:22 [ 38.991035] ================================================================== [ 38.991962] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.992904] Read of size 8 at addr ffff88800e1f1c20 by task sshd/219 [ 38.993667] [ 38.993893] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.994825] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.995810] Call Trace: [ 38.996153] [ 38.996441] dump_stack_lvl+0x91/0xf0 [ 38.996938] print_report+0xcc/0x620 [ 38.997420] ? __virt_addr_valid+0x102/0x340 [ 38.997967] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.998591] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.999209] kasan_report+0xbe/0xf0 [ 38.999687] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.000327] vma_interval_tree_remove+0xc75/0xec0 [ 39.000930] vma_prepare+0xc54/0x11a0 [ 39.001408] __split_vma+0x5af/0x950 [ 39.001882] ? __pfx___split_vma+0x10/0x10 [ 39.002413] ? find_held_lock+0x2c/0x110 [ 39.002942] do_vmi_align_munmap+0x2ba/0x11f0 [ 39.003511] ? lock_is_held_type+0x9f/0x120 [ 39.004078] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 39.004695] ? mtree_range_walk+0x632/0x900 [ 39.005253] ? mas_walk+0x5c7/0x7c0 [ 39.005742] do_vmi_munmap+0x1f1/0x2b0 [ 39.006242] mmap_region+0x1f9/0x2660 [ 39.006727] ? vm_mmap_pgoff+0x15c/0x3a0 [ 39.007247] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 39.007990] ? __pfx_lock_acquire+0x10/0x10 [ 39.008537] ? __pfx_mmap_region+0x10/0x10 [ 39.009067] ? security_mmap_addr+0x7d/0xa0 [ 39.009605] ? get_unmapped_area+0x1f5/0x3f0 [ 39.010162] do_mmap+0x854/0xf00 [ 39.010604] vm_mmap_pgoff+0x1a6/0x3a0 [ 39.011101] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 39.011675] ksys_mmap_pgoff+0x3af/0x500 [ 39.012210] do_syscall_64+0x3f/0x90 [ 39.012696] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.013349] RIP: 0033:0x7f0cc1dbfd82 [ 39.013810] 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 [ 39.015940] RSP: 002b:00007fff03eebff8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 39.016851] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f0cc1dbfd82 [ 39.017708] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f0cc11f9000 [ 39.018564] RBP: 00007f0cc11f9000 R08: 0000000000000009 R09: 0000000000001000 [ 39.019420] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ba1a93eec0 [ 39.020284] R13: 00007fff03eec010 R14: 00007fff03eec040 R15: 00007fff03eec3a0 [ 39.021151] [ 39.021448] [ 39.021671] Allocated by task 212: [ 39.022100] kasan_save_stack+0x22/0x50 [ 39.022615] kasan_set_track+0x25/0x30 [ 39.023119] __kasan_slab_alloc+0x59/0x70 [ 39.023648] kmem_cache_alloc+0x16b/0x370 [ 39.024175] vm_area_dup+0x20/0x160 [ 39.024637] __split_vma+0x170/0x950 [ 39.025103] split_vma+0xc6/0x110 [ 39.025550] mprotect_fixup+0x8d2/0xb30 [ 39.026050] do_mprotect_pkey+0x87e/0xd40 [ 39.026572] __x64_sys_mprotect+0x78/0xc0 [ 39.027101] do_syscall_64+0x3f/0x90 [ 39.027577] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.028232] [ 39.028447] Freed by task 212: [ 39.028844] kasan_save_stack+0x22/0x50 [ 39.029354] kasan_set_track+0x25/0x30 [ 39.029855] kasan_save_free_info+0x2b/0x50 [ 39.030395] __kasan_slab_free+0x10a/0x190 [ 39.030934] kmem_cache_free+0x10d/0x4d0 [ 39.031443] rcu_core+0x8c8/0x2860 [ 39.031908] __do_softirq+0x1b7/0x7d4 [ 39.032391] [ 39.032612] Last potentially related work creation: [ 39.033202] kasan_save_stack+0x22/0x50 [ 39.033713] __kasan_record_aux_stack+0x8e/0xa0 [ 39.034295] __call_rcu_common.constprop.0+0x6a/0xb90 [ 39.034944] remove_vma+0x139/0x170 [ 39.035396] do_vmi_align_munmap+0xd4a/0x11f0 [ 39.035970] do_vmi_munmap+0x1f1/0x2b0 [ 39.036456] __vm_munmap+0x138/0x3a0 [ 39.036931] __x64_sys_munmap+0x59/0x80 [ 39.037434] do_syscall_64+0x3f/0x90 [ 39.037920] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.038571] [ 39.038789] The buggy address belongs to the object at ffff88800e1f1bc8 [ 39.038789] which belongs to the cache vm_area_struct of size 168 [ 39.040271] The buggy address is located 88 bytes inside of [ 39.040271] freed 168-byte region [ffff88800e1f1bc8, ffff88800e1f1c70) [ 39.041689] [ 39.041907] The buggy address belongs to the physical page: [ 39.042575] page:0000000046371966 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe1f1 [ 39.043654] memcg:ffff88800e81cc01 [ 39.044092] flags: 0x100000000000200(slab|node=0|zone=1) [ 39.044738] page_type: 0xffffffff() [ 39.045193] raw: 0100000000000200 ffff8880087a0c80 ffffea0000387740 dead000000000002 [ 39.046115] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e81cc01 [ 39.047026] page dumped because: kasan: bad access detected [ 39.047695] [ 39.047933] Memory state around the buggy address: [ 39.048512] ffff88800e1f1b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 39.049375] ffff88800e1f1b80: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 39.050237] >ffff88800e1f1c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 39.051101] ^ [ 39.051637] ffff88800e1f1c80: fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 [ 39.052506] ffff88800e1f1d00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc [ 39.053363] ================================================================== [ 39.054345] Disabling lock debugging due to kernel taint [ 41.410289] BUG: Bad rss-counter state mm:00000000581c62a6 type:MM_FILEPAGES val:33 [ 41.411468] BUG: Bad rss-counter state mm:00000000581c62a6 type:MM_ANONPAGES val:22 [ 41.833166] BUG: Bad rss-counter state mm:00000000a098cfe7 type:MM_FILEPAGES val:33 [ 41.834182] BUG: Bad rss-counter state mm:00000000a098cfe7 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:33630' (ECDSA) to the list of known hosts. 2023/06/20 11:16:06 fuzzer started 2023/06/20 11:16:06 dialing manager at localhost:36067 2023/06/20 11:16:06 checking machine... 2023/06/20 11:16:06 checking revisions... [ 42.542382] kmemleak: Automatic memory scanning thread ended 2023/06/20 11:16:06 testing simple program... [ 42.593141] cgroup: Unknown subsys name 'net' [ 42.632183] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:16:06 Registers: info registers vcpu 0 RAX=0000000080000000 RBX=ffff888018f25080 RCX=0000000000000000 RDX=ffff88800f9c51c0 RSI=ffffffff83c1c79d RDI=0000000000000005 RBP=0000000000000001 RSP=ffff888019427d68 R8 =0000000000000005 R9 =000000000000006b R10=000000000000006b R11=0000000000000000 R12=ffff888015c67800 R13=ffff888019427e30 R14=000000000000006e R15=000000000000006b RIP=ffffffff814c0880 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 00007fd24d80a900 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=00007fd24ddbf650 CR3=000000000eb3a000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000080010002 RBX=000000000000e703 RCX=0000000000000000 RDX=ffff888008d951c0 RSI=ffffffff813cb4f9 RDI=0000000000000005 RBP=ffff88806cf2b988 RSP=ffff88806cf09ed8 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000001 R11=ffff88806cf09ff8 R12=0000000000000001 R13=dffffc0000000000 R14=ffff88806cf2baa8 R15=ffff88806cf2b940 RIP=ffffffff813cb4fb 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=00007f2859e442c0 CR3=0000000009518000 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=13fd40c5084546b99645342c4bb96d51 XMM02=ec2efd57dc4c00df000000000011b2d8 XMM03=92df52d69e208905000000000011b3a8 XMM04=74651f1b2a27860b00000000000ae988 XMM05=70c282c44718d6ae0000000000132ab0 XMM06=806171799158d9670000000000131790 XMM07=e042d86d42eb936e0000000000121fe0 XMM08=92df52d69e208905000000000011b3a8 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000