syzkaller login: [ 30.647087] BUG: Bad rss-counter state mm:0000000073d7c105 type:MM_FILEPAGES val:33 [ 30.648500] BUG: Bad rss-counter state mm:0000000073d7c105 type:MM_ANONPAGES val:22 [ 30.787296] ================================================================== [ 30.788146] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.789020] Read of size 8 at addr ffff88800cf4bdf0 by task sshd/220 [ 30.789726] [ 30.789947] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.790744] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.791738] Call Trace: [ 30.792035] [ 30.792299] dump_stack_lvl+0x91/0xf0 [ 30.792752] print_report+0xcc/0x620 [ 30.793216] ? __virt_addr_valid+0x102/0x340 [ 30.793727] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.794311] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.794881] kasan_report+0xbe/0xf0 [ 30.795323] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.795908] vma_interval_tree_remove+0xc75/0xec0 [ 30.796465] vma_prepare+0xc54/0x11a0 [ 30.796913] __split_vma+0x5af/0x950 [ 30.797355] ? __pfx___split_vma+0x10/0x10 [ 30.797854] ? find_held_lock+0x2c/0x110 [ 30.798349] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.798872] ? lock_is_held_type+0x9f/0x120 [ 30.799387] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.799956] ? mtree_range_walk+0x632/0x900 [ 30.800476] ? mas_walk+0x5c7/0x7c0 [ 30.800924] do_vmi_munmap+0x1f1/0x2b0 [ 30.801377] mmap_region+0x1f9/0x2660 [ 30.801827] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.802321] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.802988] ? __pfx_lock_acquire+0x10/0x10 [ 30.803489] ? __pfx_mmap_region+0x10/0x10 [ 30.803985] ? security_mmap_addr+0x7d/0xa0 [ 30.804489] ? get_unmapped_area+0x1f5/0x3f0 [ 30.805008] do_mmap+0x854/0xf00 [ 30.805416] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.805875] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.806415] ksys_mmap_pgoff+0x3af/0x500 [ 30.806882] do_syscall_64+0x3f/0x90 [ 30.807336] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.807945] RIP: 0033:0x7fcae3110d82 [ 30.808378] 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 [ 30.810408] RSP: 002b:00007ffcdebec228 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.811256] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fcae3110d82 [ 30.812058] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fcae254a000 [ 30.812852] RBP: 00007fcae254a000 R08: 0000000000000009 R09: 0000000000001000 [ 30.813637] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c37c5ded90 [ 30.814431] R13: 00007ffcdebec240 R14: 00007ffcdebec270 R15: 00007ffcdebec5d0 [ 30.815228] [ 30.815504] [ 30.815705] Allocated by task 213: [ 30.816105] kasan_save_stack+0x22/0x50 [ 30.816575] kasan_set_track+0x25/0x30 [ 30.817033] __kasan_slab_alloc+0x59/0x70 [ 30.817522] kmem_cache_alloc+0x16b/0x370 [ 30.818024] vm_area_dup+0x20/0x160 [ 30.818456] __split_vma+0x170/0x950 [ 30.818891] split_vma+0xc6/0x110 [ 30.819307] mprotect_fixup+0x8d2/0xb30 [ 30.819776] do_mprotect_pkey+0x87e/0xd40 [ 30.820261] __x64_sys_mprotect+0x78/0xc0 [ 30.820736] do_syscall_64+0x3f/0x90 [ 30.821179] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.821778] [ 30.821985] Freed by task 213: [ 30.822348] kasan_save_stack+0x22/0x50 [ 30.822819] kasan_set_track+0x25/0x30 [ 30.823284] kasan_save_free_info+0x2b/0x50 [ 30.823783] __kasan_slab_free+0x10a/0x190 [ 30.824281] kmem_cache_free+0x10d/0x4d0 [ 30.824757] rcu_core+0x8c8/0x2860 [ 30.825162] __do_softirq+0x1b7/0x7d4 [ 30.825609] [ 30.825809] Last potentially related work creation: [ 30.826370] kasan_save_stack+0x22/0x50 [ 30.826845] __kasan_record_aux_stack+0x8e/0xa0 [ 30.827384] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.827977] remove_vma+0x139/0x170 [ 30.828397] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.828927] do_vmi_munmap+0x1f1/0x2b0 [ 30.829381] __vm_munmap+0x138/0x3a0 [ 30.829817] __x64_sys_munmap+0x59/0x80 [ 30.830290] do_syscall_64+0x3f/0x90 [ 30.830731] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.831330] [ 30.831530] The buggy address belongs to the object at ffff88800cf4bd98 [ 30.831530] which belongs to the cache vm_area_struct of size 168 [ 30.832888] The buggy address is located 88 bytes inside of [ 30.832888] freed 168-byte region [ffff88800cf4bd98, ffff88800cf4be40) [ 30.834212] [ 30.834411] The buggy address belongs to the physical page: [ 30.835033] page:0000000051a8891c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xcf4b [ 30.836056] memcg:ffff88800fe66701 [ 30.836468] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.837050] page_type: 0xffffffff() [ 30.837466] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.838332] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fe66701 [ 30.839174] page dumped because: kasan: bad access detected [ 30.839775] [ 30.839977] Memory state around the buggy address: [ 30.840505] ffff88800cf4bc80: fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 [ 30.841292] ffff88800cf4bd00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc [ 30.842089] >ffff88800cf4bd80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 30.842886] ^ [ 30.843641] ffff88800cf4be00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 30.844432] ffff88800cf4be80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.845231] ================================================================== [ 30.846136] Disabling lock debugging due to kernel taint [ 32.232115] BUG: Bad rss-counter state mm:00000000679090fb type:MM_FILEPAGES val:33 [ 32.232848] BUG: Bad rss-counter state mm:00000000679090fb type:MM_ANONPAGES val:22 [ 32.659790] BUG: Bad rss-counter state mm:00000000672e810d type:MM_FILEPAGES val:33 [ 32.660937] BUG: Bad rss-counter state mm:00000000672e810d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:34532' (ECDSA) to the list of known hosts. 2023/06/21 08:47:31 fuzzer started 2023/06/21 08:47:31 dialing manager at localhost:36067 2023/06/21 08:47:31 checking machine... 2023/06/21 08:47:31 checking revisions... [ 33.429099] kmemleak: Automatic memory scanning thread ended 2023/06/21 08:47:31 testing simple program... [ 33.478459] cgroup: Unknown subsys name 'net' [ 33.534856] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 08:47:31 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000001 RCX=ffffffff8451203c RDX=0000000000035120 RSI=0000000000035120 RDI=ffffffff865bde70 RBP=ffff8880190cf878 RSP=ffff8880190cf7b0 R8 =0000000000000000 R9 =ffff8880190cf860 R10=0000000000038001 R11=0000000000010484 R12=ffff8880190cf880 R13=ffff8880190cf868 R14=ffff8880190cf861 R15=ffff8880190cf820 RIP=ffffffff8113077a 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 00007f58371a6900 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=00007f4afca1d040 CR3=000000000c75c000 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=ff0000000000ffff0000000000ff0000 XMM02=ff000000000000ff0000000000ff0000 XMM03=66207463656e6e6f6373696420646576 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=0d0c0f0e09080b0a0504070601000302 XMM07=00000000000000000000000000000000 XMM08=000a0d732a2e25006c61746166003367 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=ffff888008c04400 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=0000563244f43b40 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=00007fa86b692510000055e3a83a7790 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