syzkaller login: [ 30.671303] BUG: Bad rss-counter state mm:00000000f1e565ff type:MM_FILEPAGES val:33 [ 30.672639] BUG: Bad rss-counter state mm:00000000f1e565ff type:MM_ANONPAGES val:22 [ 30.835367] ================================================================== [ 30.836516] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.837494] Read of size 8 at addr ffff88800fb4d228 by task sshd/220 [ 30.838389] [ 30.838612] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.839500] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.840511] Call Trace: [ 30.840833] [ 30.841120] dump_stack_lvl+0x91/0xf0 [ 30.841616] print_report+0xcc/0x620 [ 30.842103] ? __virt_addr_valid+0x102/0x340 [ 30.842666] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.843293] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.843933] kasan_report+0xbe/0xf0 [ 30.844409] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.845036] vma_interval_tree_remove+0xc75/0xec0 [ 30.845642] vma_prepare+0xc54/0x11a0 [ 30.846124] __split_vma+0x5af/0x950 [ 30.846625] ? __pfx___split_vma+0x10/0x10 [ 30.847162] ? find_held_lock+0x2c/0x110 [ 30.847701] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.848281] ? lock_is_held_type+0x9f/0x120 [ 30.848832] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.849446] ? mtree_range_walk+0x632/0x900 [ 30.850007] ? mas_walk+0x5c7/0x7c0 [ 30.850489] do_vmi_munmap+0x1f1/0x2b0 [ 30.850993] mmap_region+0x1f9/0x2660 [ 30.851486] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.852023] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.852750] ? __pfx_lock_acquire+0x10/0x10 [ 30.853291] ? __pfx_mmap_region+0x10/0x10 [ 30.853823] ? security_mmap_addr+0x7d/0xa0 [ 30.854364] ? get_unmapped_area+0x1f5/0x3f0 [ 30.854933] do_mmap+0x854/0xf00 [ 30.855383] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.855906] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.856482] ksys_mmap_pgoff+0x3af/0x500 [ 30.857001] do_syscall_64+0x3f/0x90 [ 30.857487] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.858150] RIP: 0033:0x7ff10e8d4d82 [ 30.858611] 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 [ 30.860763] RSP: 002b:00007fff8f880278 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.861669] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007ff10e8d4d82 [ 30.862528] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007ff10dd0e000 [ 30.863388] RBP: 00007ff10dd0e000 R08: 0000000000000009 R09: 0000000000001000 [ 30.864267] R10: 0000000000000812 R11: 0000000000000206 R12: 0000556c34ec2f70 [ 30.865119] R13: 00007fff8f880290 R14: 00007fff8f8802c0 R15: 00007fff8f880620 [ 30.865982] [ 30.866280] [ 30.866495] Allocated by task 213: [ 30.866924] kasan_save_stack+0x22/0x50 [ 30.867431] kasan_set_track+0x25/0x30 [ 30.867935] __kasan_slab_alloc+0x59/0x70 [ 30.868462] kmem_cache_alloc+0x16b/0x370 [ 30.868977] vm_area_dup+0x20/0x160 [ 30.869433] __split_vma+0x170/0x950 [ 30.869906] split_vma+0xc6/0x110 [ 30.870356] mprotect_fixup+0x8d2/0xb30 [ 30.870874] do_mprotect_pkey+0x87e/0xd40 [ 30.871395] __x64_sys_mprotect+0x78/0xc0 [ 30.871935] do_syscall_64+0x3f/0x90 [ 30.872414] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.873057] [ 30.873270] Freed by task 13: [ 30.873655] kasan_save_stack+0x22/0x50 [ 30.874167] kasan_set_track+0x25/0x30 [ 30.874672] kasan_save_free_info+0x2b/0x50 [ 30.875205] __kasan_slab_free+0x10a/0x190 [ 30.875769] kmem_cache_free+0x10d/0x4d0 [ 30.876280] rcu_core+0x8c8/0x2860 [ 30.876727] __do_softirq+0x1b7/0x7d4 [ 30.877208] [ 30.877431] Last potentially related work creation: [ 30.878030] kasan_save_stack+0x22/0x50 [ 30.878537] __kasan_record_aux_stack+0x8e/0xa0 [ 30.879122] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.879797] remove_vma+0x139/0x170 [ 30.880249] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.880820] do_vmi_munmap+0x1f1/0x2b0 [ 30.881318] __vm_munmap+0x138/0x3a0 [ 30.881802] __x64_sys_munmap+0x59/0x80 [ 30.882304] do_syscall_64+0x3f/0x90 [ 30.882786] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.883425] [ 30.883656] The buggy address belongs to the object at ffff88800fb4d1d0 [ 30.883656] which belongs to the cache vm_area_struct of size 168 [ 30.885120] The buggy address is located 88 bytes inside of [ 30.885120] freed 168-byte region [ffff88800fb4d1d0, ffff88800fb4d278) [ 30.886513] [ 30.886729] The buggy address belongs to the physical page: [ 30.887381] page:00000000c8239f7e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfb4d [ 30.888472] memcg:ffff88800dab3d01 [ 30.888899] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.889542] page_type: 0xffffffff() [ 30.889994] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.890915] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dab3d01 [ 30.891849] page dumped because: kasan: bad access detected [ 30.892522] [ 30.892737] Memory state around the buggy address: [ 30.893342] ffff88800fb4d100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.894205] ffff88800fb4d180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 30.895075] >ffff88800fb4d200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 30.895942] ^ [ 30.896500] ffff88800fb4d280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 30.897379] ffff88800fb4d300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 30.898241] ================================================================== [ 30.899222] Disabling lock debugging due to kernel taint [ 32.733743] BUG: Bad rss-counter state mm:00000000b678c089 type:MM_FILEPAGES val:33 [ 32.734983] BUG: Bad rss-counter state mm:00000000b678c089 type:MM_ANONPAGES val:22 [ 33.206678] BUG: Bad rss-counter state mm:00000000e6257463 type:MM_FILEPAGES val:33 [ 33.208462] BUG: Bad rss-counter state mm:00000000e6257463 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:60031' (ECDSA) to the list of known hosts. 2023/06/20 20:30:40 fuzzer started 2023/06/20 20:30:40 dialing manager at localhost:36067 2023/06/20 20:30:40 checking machine... 2023/06/20 20:30:40 checking revisions... [ 33.876037] kmemleak: Automatic memory scanning thread ended 2023/06/20 20:30:40 testing simple program... [ 33.918456] cgroup: Unknown subsys name 'net' [ 33.955149] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 20:30:40 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffffed1000d4efa1 RCX=0000000000000000 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=0000000000000000 RSP=ffff888006a77cf8 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=0000000000000000 R12=0000000000000002 R13=0000000000000000 R14=ffffffff8560b640 R15=0000000000000000 RIP=ffffffff812d9031 RFL=00000282 [--S----] 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f7011256900 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=00007f7011daa044 CR3=000000000f18a000 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=00000000000000000000000000000000 XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000 XMM04=7789ae13b72efbb4e75ee800ad316de6 XMM05=0000000000000000000000ff00000000 XMM06=73736513632e733d735e720068316d3d XMM07=672065736f6c635f6e6f69737365733a XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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 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=00007f701180b650 CR3=000000000d946000 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=2039333a30333a3032203032206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732039333a30333a3032203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000