syzkaller login: [ 28.735639] BUG: Bad rss-counter state mm:0000000099d2fb3c type:MM_FILEPAGES val:33 [ 28.737521] BUG: Bad rss-counter state mm:0000000099d2fb3c type:MM_ANONPAGES val:22 [ 28.920665] ================================================================== [ 28.921859] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.923024] Read of size 8 at addr ffff88800e94a058 by task sshd/220 [ 28.923867] [ 28.924118] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.925083] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.926150] Call Trace: [ 28.926501] [ 28.926813] dump_stack_lvl+0x91/0xf0 [ 28.927360] print_report+0xcc/0x620 [ 28.927923] ? __virt_addr_valid+0x102/0x340 [ 28.928562] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.929276] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.929970] kasan_report+0xbe/0xf0 [ 28.930505] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.931206] vma_interval_tree_remove+0xc75/0xec0 [ 28.931884] vma_prepare+0xc54/0x11a0 [ 28.932421] __split_vma+0x5af/0x950 [ 28.932974] ? __pfx___split_vma+0x10/0x10 [ 28.933567] ? find_held_lock+0x2c/0x110 [ 28.934155] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.934776] ? lock_is_held_type+0x9f/0x120 [ 28.935377] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.936040] ? mtree_range_walk+0x632/0x900 [ 28.936661] ? mas_walk+0x5c7/0x7c0 [ 28.937213] do_vmi_munmap+0x1f1/0x2b0 [ 28.937781] mmap_region+0x1f9/0x2660 [ 28.938352] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.938950] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.939799] ? __pfx_lock_acquire+0x10/0x10 [ 28.940429] ? __pfx_mmap_region+0x10/0x10 [ 28.941061] ? security_mmap_addr+0x7d/0xa0 [ 28.941676] ? get_unmapped_area+0x1f5/0x3f0 [ 28.942332] do_mmap+0x854/0xf00 [ 28.942835] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.943404] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.944050] ksys_mmap_pgoff+0x3af/0x500 [ 28.944623] do_syscall_64+0x3f/0x90 [ 28.945190] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.945919] RIP: 0033:0x7f52c157ad82 [ 28.946434] 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 [ 28.948819] RSP: 002b:00007ffd9fd3fc28 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.949864] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f52c157ad82 [ 28.950826] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f52c09b4000 [ 28.951792] RBP: 00007f52c09b4000 R08: 0000000000000009 R09: 0000000000001000 [ 28.952749] R10: 0000000000000812 R11: 0000000000000206 R12: 00005622bc746f70 [ 28.953714] R13: 00007ffd9fd3fc40 R14: 00007ffd9fd3fc70 R15: 00007ffd9fd3ffd0 [ 28.954715] [ 28.955054] [ 28.955305] Allocated by task 212: [ 28.955810] kasan_save_stack+0x22/0x50 [ 28.956398] kasan_set_track+0x25/0x30 [ 28.956983] __kasan_slab_alloc+0x59/0x70 [ 28.957592] kmem_cache_alloc+0x16b/0x370 [ 28.958195] vm_area_dup+0x20/0x160 [ 28.958723] __split_vma+0x170/0x950 [ 28.959260] split_vma+0xc6/0x110 [ 28.959776] mprotect_fixup+0x8d2/0xb30 [ 28.960357] do_mprotect_pkey+0x87e/0xd40 [ 28.960960] __x64_sys_mprotect+0x78/0xc0 [ 28.961572] do_syscall_64+0x3f/0x90 [ 28.962115] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.962858] [ 28.963105] Freed by task 212: [ 28.963622] kasan_save_stack+0x22/0x50 [ 28.964207] kasan_set_track+0x25/0x30 [ 28.964779] kasan_save_free_info+0x2b/0x50 [ 28.965418] __kasan_slab_free+0x10a/0x190 [ 28.966037] kmem_cache_free+0x10d/0x4d0 [ 28.966621] rcu_core+0x8c8/0x2860 [ 28.967146] __do_softirq+0x1b7/0x7d4 [ 28.967694] [ 28.967941] Last potentially related work creation: [ 28.968615] kasan_save_stack+0x22/0x50 [ 28.969218] __kasan_record_aux_stack+0x8e/0xa0 [ 28.969878] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.970625] remove_vma+0x139/0x170 [ 28.971149] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.971803] do_vmi_munmap+0x1f1/0x2b0 [ 28.972371] __vm_munmap+0x138/0x3a0 [ 28.972916] __x64_sys_munmap+0x59/0x80 [ 28.973524] do_syscall_64+0x3f/0x90 [ 28.974089] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.974852] [ 28.975106] The buggy address belongs to the object at ffff88800e94a000 [ 28.975106] which belongs to the cache vm_area_struct of size 168 [ 28.976827] The buggy address is located 88 bytes inside of [ 28.976827] freed 168-byte region [ffff88800e94a000, ffff88800e94a0a8) [ 28.978495] [ 28.978749] The buggy address belongs to the physical page: [ 28.979515] page:0000000012d946a2 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe94a [ 28.980795] memcg:ffff88800d2a6001 [ 28.981304] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.982064] page_type: 0xffffffff() [ 28.982591] raw: 0100000000000200 ffff8880087a0c80 ffffea00003be100 dead000000000006 [ 28.983655] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d2a6001 [ 28.984724] page dumped because: kasan: bad access detected [ 28.985519] [ 28.985775] Memory state around the buggy address: [ 28.986451] ffff88800e949f00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 28.987454] ffff88800e949f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.988457] >ffff88800e94a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.989462] ^ [ 28.990308] ffff88800e94a080: fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 [ 28.991297] ffff88800e94a100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.992293] ================================================================== [ 28.993380] Disabling lock debugging due to kernel taint [ 31.632205] BUG: Bad rss-counter state mm:00000000d12c8764 type:MM_FILEPAGES val:33 [ 31.633192] BUG: Bad rss-counter state mm:00000000d12c8764 type:MM_ANONPAGES val:22 [ 32.096417] BUG: Bad rss-counter state mm:00000000ce46f62b type:MM_FILEPAGES val:33 [ 32.097413] BUG: Bad rss-counter state mm:00000000ce46f62b type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:55649' (ECDSA) to the list of known hosts. 2023/06/21 03:04:17 fuzzer started 2023/06/21 03:04:17 dialing manager at localhost:36067 2023/06/21 03:04:17 checking machine... 2023/06/21 03:04:17 checking revisions... [ 32.766599] kmemleak: Automatic memory scanning thread ended 2023/06/21 03:04:17 testing simple program... [ 32.819687] cgroup: Unknown subsys name 'net' [ 32.867848] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:04:17 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c04000 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 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 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=00007fed5ba6a410 CR3=000000001021e000 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=c17d93ea98642b975d41329ef91d4039 XMM02=000000000011a3e8d59e07bde36eea69 XMM03=000000000011a510ec2efd57dc4c00df XMM04=07bd0bb3ee88641300000000000ae988 XMM05=342e0fb7eb75d58200000000001328f0 XMM06=19e9129bd510f2350000000000131788 XMM07=fb795ef6d65770560000000000121260 XMM08=2c67c8bc2e329bc3000000000011a510 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff888014690a00 RBX=0000000000000001 RCX=0000000000000001 RDX=ffff88800c9efd01 RSI=ffff88800c9efdc8 RDI=ffff88800c9efdc8 RBP=ffff88800c9efa18 RSP=ffff88800c9ef950 R8 =0000000000000001 R9 =ffff88800c9efa00 R10=0000000000038001 R11=0000000000038dd2 R12=ffff88800c9efa20 R13=ffff88800c9efa08 R14=ffff88800c9efdc8 R15=ffff88800c9ef9c0 RIP=ffffffff81131236 RFL=00000202 [-------] 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 00007fa65d507900 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=00007fa65dabe618 CR3=000000000c6fa000 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=563412feff00545000000000000080fe 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