syzkaller login: [ 29.060394] BUG: Bad rss-counter state mm:0000000002c75ed1 type:MM_FILEPAGES val:33 [ 29.061857] BUG: Bad rss-counter state mm:0000000002c75ed1 type:MM_ANONPAGES val:22 [ 29.243126] ================================================================== [ 29.244043] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.244995] Read of size 8 at addr ffff88800e5305c8 by task sshd/220 [ 29.245784] [ 29.246071] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 29.246954] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.247929] Call Trace: [ 29.248262] [ 29.248573] dump_stack_lvl+0x91/0xf0 [ 29.249062] print_report+0xcc/0x620 [ 29.249549] ? __virt_addr_valid+0x102/0x340 [ 29.250109] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.250728] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.251351] kasan_report+0xbe/0xf0 [ 29.251828] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.252469] vma_interval_tree_remove+0xc75/0xec0 [ 29.253091] vma_prepare+0xc54/0x11a0 [ 29.253571] __split_vma+0x5af/0x950 [ 29.254043] ? __pfx___split_vma+0x10/0x10 [ 29.254567] ? find_held_lock+0x2c/0x110 [ 29.255086] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.255653] ? lock_is_held_type+0x9f/0x120 [ 29.256193] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.256807] ? mtree_range_walk+0x632/0x900 [ 29.257359] ? mas_walk+0x5c7/0x7c0 [ 29.257839] do_vmi_munmap+0x1f1/0x2b0 [ 29.258332] mmap_region+0x1f9/0x2660 [ 29.258811] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.259322] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.260024] ? __pfx_lock_acquire+0x10/0x10 [ 29.260577] ? __pfx_mmap_region+0x10/0x10 [ 29.261102] ? security_mmap_addr+0x7d/0xa0 [ 29.261636] ? get_unmapped_area+0x1f5/0x3f0 [ 29.262190] do_mmap+0x854/0xf00 [ 29.262639] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.263136] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.263699] ksys_mmap_pgoff+0x3af/0x500 [ 29.264208] do_syscall_64+0x3f/0x90 [ 29.264692] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.265344] RIP: 0033:0x7efffaadbd82 [ 29.265797] 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 [ 29.267936] RSP: 002b:00007ffc62eb94d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.268871] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007efffaadbd82 [ 29.269729] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007efff9f15000 [ 29.270586] RBP: 00007efff9f15000 R08: 0000000000000009 R09: 0000000000001000 [ 29.271428] R10: 0000000000000812 R11: 0000000000000206 R12: 000055655231ab20 [ 29.272272] R13: 00007ffc62eb94f0 R14: 00007ffc62eb9520 R15: 00007ffc62eb9880 [ 29.273148] [ 29.273445] [ 29.273657] Allocated by task 211: [ 29.274092] kasan_save_stack+0x22/0x50 [ 29.274590] kasan_set_track+0x25/0x30 [ 29.275088] __kasan_slab_alloc+0x59/0x70 [ 29.275615] kmem_cache_alloc+0x16b/0x370 [ 29.276137] vm_area_dup+0x20/0x160 [ 29.276604] __split_vma+0x170/0x950 [ 29.277071] split_vma+0xc6/0x110 [ 29.277513] mprotect_fixup+0x8d2/0xb30 [ 29.278017] do_mprotect_pkey+0x87e/0xd40 [ 29.278551] __x64_sys_mprotect+0x78/0xc0 [ 29.279068] do_syscall_64+0x3f/0x90 [ 29.279543] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.280189] [ 29.280407] Freed by task 19: [ 29.280794] kasan_save_stack+0x22/0x50 [ 29.281299] kasan_set_track+0x25/0x30 [ 29.281795] kasan_save_free_info+0x2b/0x50 [ 29.282348] __kasan_slab_free+0x10a/0x190 [ 29.282883] kmem_cache_free+0x10d/0x4d0 [ 29.283396] rcu_core+0x8c8/0x2860 [ 29.283835] __do_softirq+0x1b7/0x7d4 [ 29.284307] [ 29.284536] Last potentially related work creation: [ 29.285117] kasan_save_stack+0x22/0x50 [ 29.285626] __kasan_record_aux_stack+0x8e/0xa0 [ 29.286196] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.286838] remove_vma+0x139/0x170 [ 29.287292] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.287842] do_vmi_munmap+0x1f1/0x2b0 [ 29.288328] __vm_munmap+0x138/0x3a0 [ 29.288807] __x64_sys_munmap+0x59/0x80 [ 29.289306] do_syscall_64+0x3f/0x90 [ 29.289783] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.290427] [ 29.290641] The buggy address belongs to the object at ffff88800e530570 [ 29.290641] which belongs to the cache vm_area_struct of size 168 [ 29.292100] The buggy address is located 88 bytes inside of [ 29.292100] freed 168-byte region [ffff88800e530570, ffff88800e530618) [ 29.293505] [ 29.293728] The buggy address belongs to the physical page: [ 29.294387] page:00000000e497c7d7 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe530 [ 29.295466] memcg:ffff88800ca20101 [ 29.295886] flags: 0x100000000000200(slab|node=0|zone=1) [ 29.296549] page_type: 0xffffffff() [ 29.297004] raw: 0100000000000200 ffff8880087a0c80 dead000000000100 dead000000000122 [ 29.297920] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ca20101 [ 29.298831] page dumped because: kasan: bad access detected [ 29.299488] [ 29.299703] Memory state around the buggy address: [ 29.300279] ffff88800e530480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.301150] ffff88800e530500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 29.302008] >ffff88800e530580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.302857] ^ [ 29.303525] ffff88800e530600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 29.304396] ffff88800e530680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.305253] ================================================================== [ 29.306225] Disabling lock debugging due to kernel taint [ 31.161834] BUG: Bad rss-counter state mm:000000006d88f0a1 type:MM_FILEPAGES val:33 [ 31.162789] BUG: Bad rss-counter state mm:000000006d88f0a1 type:MM_ANONPAGES val:22 [ 31.626874] BUG: Bad rss-counter state mm:000000004a098b28 type:MM_FILEPAGES val:33 [ 31.627883] BUG: Bad rss-counter state mm:000000004a098b28 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:10730' (ECDSA) to the list of known hosts. 2023/06/21 07:12:06 fuzzer started 2023/06/21 07:12:06 dialing manager at localhost:36067 2023/06/21 07:12:06 checking machine... 2023/06/21 07:12:06 checking revisions... [ 32.305582] kmemleak: Automatic memory scanning thread ended 2023/06/21 07:12:06 testing simple program... [ 32.359964] cgroup: Unknown subsys name 'net' [ 32.402302] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:12:06 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=00007f399170b810 CR3=000000000f5b0000 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=4e365c8ce146258ff04a61ef334d304a XMM02=000000000011d030eff9b2d0a8fce9cb XMM03=000000000011d1002c67c8bc2e329bc3 XMM04=81c9cb3a1888ca2b00000000000ae988 XMM05=dfcdbad4f1609c370000000000131580 XMM06=c0d52568259a6bb500000000001303e8 XMM07=e042d86d42eb936e0000000000121298 XMM08=df75b4510a21bbf0000000000011d100 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 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=00007f0717508618 CR3=000000000e284000 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=2035303a32313a3730203132206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732035303a32313a3730203132 XMM08=69767265733d7373616c63742030733a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000