syzkaller login: [ 30.804335] BUG: Bad rss-counter state mm:0000000057c7d1c1 type:MM_FILEPAGES val:33 [ 30.805592] BUG: Bad rss-counter state mm:0000000057c7d1c1 type:MM_ANONPAGES val:22 [ 30.850548] ================================================================== [ 30.851640] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.852998] Read of size 8 at addr ffff88801661fb38 by task sshd/220 [ 30.853819] [ 30.854038] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.854941] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.856065] Call Trace: [ 30.856386] [ 30.856784] dump_stack_lvl+0x91/0xf0 [ 30.857401] print_report+0xcc/0x620 [ 30.857963] ? __virt_addr_valid+0x102/0x340 [ 30.858612] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.859246] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.859873] kasan_report+0xbe/0xf0 [ 30.860462] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.861295] vma_interval_tree_remove+0xc75/0xec0 [ 30.861959] vma_prepare+0xc54/0x11a0 [ 30.862435] __split_vma+0x5af/0x950 [ 30.862902] ? __pfx___split_vma+0x10/0x10 [ 30.863423] ? find_held_lock+0x2c/0x110 [ 30.863947] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.864504] ? lock_is_held_type+0x9f/0x120 [ 30.865057] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.865662] ? mtree_range_walk+0x632/0x900 [ 30.866207] ? mas_walk+0x5c7/0x7c0 [ 30.866675] do_vmi_munmap+0x1f1/0x2b0 [ 30.867163] mmap_region+0x1f9/0x2660 [ 30.867640] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.868150] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.868874] ? __pfx_lock_acquire+0x10/0x10 [ 30.869418] ? __pfx_mmap_region+0x10/0x10 [ 30.869955] ? security_mmap_addr+0x7d/0xa0 [ 30.870493] ? get_unmapped_area+0x1f5/0x3f0 [ 30.871041] do_mmap+0x854/0xf00 [ 30.871480] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.871975] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.872546] ksys_mmap_pgoff+0x3af/0x500 [ 30.873081] do_syscall_64+0x3f/0x90 [ 30.873561] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.874206] RIP: 0033:0x7f6fbbb6fd82 [ 30.874661] 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 [ 30.876796] RSP: 002b:00007ffddc8c6da8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.877716] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f6fbbb6fd82 [ 30.878572] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f6fbafa9000 [ 30.879427] RBP: 00007f6fbafa9000 R08: 0000000000000009 R09: 0000000000001000 [ 30.880268] R10: 0000000000000812 R11: 0000000000000206 R12: 0000556da2b31ec0 [ 30.881132] R13: 00007ffddc8c6dc0 R14: 00007ffddc8c6df0 R15: 00007ffddc8c7150 [ 30.881985] [ 30.882275] [ 30.882493] Allocated by task 213: [ 30.882916] kasan_save_stack+0x22/0x50 [ 30.883421] kasan_set_track+0x25/0x30 [ 30.883915] __kasan_slab_alloc+0x59/0x70 [ 30.884442] kmem_cache_alloc+0x16b/0x370 [ 30.884979] vm_area_dup+0x20/0x160 [ 30.885444] __split_vma+0x170/0x950 [ 30.885912] split_vma+0xc6/0x110 [ 30.886348] mprotect_fixup+0x8d2/0xb30 [ 30.886855] do_mprotect_pkey+0x87e/0xd40 [ 30.887380] __x64_sys_mprotect+0x78/0xc0 [ 30.887908] do_syscall_64+0x3f/0x90 [ 30.888384] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.889041] [ 30.889253] Freed by task 13: [ 30.889637] kasan_save_stack+0x22/0x50 [ 30.890143] kasan_set_track+0x25/0x30 [ 30.890631] kasan_save_free_info+0x2b/0x50 [ 30.891168] __kasan_slab_free+0x10a/0x190 [ 30.891703] kmem_cache_free+0x10d/0x4d0 [ 30.892215] rcu_core+0x8c8/0x2860 [ 30.892657] __do_softirq+0x1b7/0x7d4 [ 30.893146] [ 30.893359] Last potentially related work creation: [ 30.893936] kasan_save_stack+0x22/0x50 [ 30.894533] __kasan_record_aux_stack+0x8e/0xa0 [ 30.895104] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.895740] remove_vma+0x139/0x170 [ 30.896188] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.896741] do_vmi_munmap+0x1f1/0x2b0 [ 30.897245] __vm_munmap+0x138/0x3a0 [ 30.897719] __x64_sys_munmap+0x59/0x80 [ 30.898216] do_syscall_64+0x3f/0x90 [ 30.898685] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.899326] [ 30.899538] The buggy address belongs to the object at ffff88801661fae0 [ 30.899538] which belongs to the cache vm_area_struct of size 168 [ 30.901015] The buggy address is located 88 bytes inside of [ 30.901015] freed 168-byte region [ffff88801661fae0, ffff88801661fb88) [ 30.902411] [ 30.902629] The buggy address belongs to the physical page: [ 30.903277] page:00000000f5a6c02f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1661f [ 30.904369] memcg:ffff88801013f301 [ 30.904798] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.905471] page_type: 0xffffffff() [ 30.905923] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 30.906834] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801013f301 [ 30.907735] page dumped because: kasan: bad access detected [ 30.908396] [ 30.908612] Memory state around the buggy address: [ 30.909197] ffff88801661fa00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.910075] ffff88801661fa80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 30.910925] >ffff88801661fb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.911764] ^ [ 30.912372] ffff88801661fb80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 30.913232] ffff88801661fc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 30.914073] ================================================================== [ 30.914970] Disabling lock debugging due to kernel taint [ 32.765252] BUG: Bad rss-counter state mm:0000000077487fca type:MM_FILEPAGES val:33 [ 32.766196] BUG: Bad rss-counter state mm:0000000077487fca type:MM_ANONPAGES val:22 [ 33.300439] BUG: Bad rss-counter state mm:00000000a29b3458 type:MM_FILEPAGES val:33 [ 33.301609] BUG: Bad rss-counter state mm:00000000a29b3458 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:30169' (ECDSA) to the list of known hosts. 2023/06/19 17:30:42 fuzzer started 2023/06/19 17:30:42 dialing manager at localhost:44161 2023/06/19 17:30:42 checking machine... 2023/06/19 17:30:42 checking revisions... [ 33.949789] kmemleak: Automatic memory scanning thread ended 2023/06/19 17:30:43 testing simple program... [ 33.996350] cgroup: Unknown subsys name 'net' [ 34.038261] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 17:30:42 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=ffffffff8613751a RDX=1ffff1100202af35 RSI=0000000000000000 RDI=0000000000000001 RBP=ffff888010157a00 RSP=ffff888010157938 R8 =ffffffff8613751e R9 =ffff8880101579e8 R10=0000000000038001 R11=0000000000020d8a R12=ffff888010157a08 R13=ffff8880101579f0 R14=ffff888010157cf8 R15=ffff8880101579a8 RIP=ffffffff81131271 RFL=00000216 [----AP-] 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 00007fa7069ce900 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=00007fa706f83650 CR3=00000000165bc000 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=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 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 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=00007ffc46ecb638 CR3=0000000005482000 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=00007f6f5522f5100000555b258d6790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000