syzkaller login: [ 30.145298] BUG: Bad rss-counter state mm:000000002c2a7ea0 type:MM_FILEPAGES val:33 [ 30.147453] BUG: Bad rss-counter state mm:000000002c2a7ea0 type:MM_ANONPAGES val:22 [ 30.341612] ================================================================== [ 30.342582] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.343596] Read of size 8 at addr ffff888019fc7b38 by task sshd/219 [ 30.344419] [ 30.344654] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.345601] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.346630] Call Trace: [ 30.346971] [ 30.347271] dump_stack_lvl+0x91/0xf0 [ 30.347808] print_report+0xcc/0x620 [ 30.348328] ? __virt_addr_valid+0x102/0x340 [ 30.348918] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.349589] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.350251] kasan_report+0xbe/0xf0 [ 30.350756] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.351426] vma_interval_tree_remove+0xc75/0xec0 [ 30.352085] vma_prepare+0xc54/0x11a0 [ 30.352615] __split_vma+0x5af/0x950 [ 30.353139] ? __pfx___split_vma+0x10/0x10 [ 30.353748] ? find_held_lock+0x2c/0x110 [ 30.354326] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.354954] ? lock_is_held_type+0x9f/0x120 [ 30.355555] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.356230] ? mtree_range_walk+0x632/0x900 [ 30.356840] ? mas_walk+0x5c7/0x7c0 [ 30.357372] do_vmi_munmap+0x1f1/0x2b0 [ 30.357914] mmap_region+0x1f9/0x2660 [ 30.358445] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.359011] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.359802] ? __pfx_lock_acquire+0x10/0x10 [ 30.360385] ? __pfx_mmap_region+0x10/0x10 [ 30.360973] ? security_mmap_addr+0x7d/0xa0 [ 30.361569] ? get_unmapped_area+0x1f5/0x3f0 [ 30.362174] do_mmap+0x854/0xf00 [ 30.362665] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.363206] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.363832] ksys_mmap_pgoff+0x3af/0x500 [ 30.364392] do_syscall_64+0x3f/0x90 [ 30.364924] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.365654] RIP: 0033:0x7f1fbaa08d82 [ 30.366153] 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 [ 30.368499] RSP: 002b:00007ffe2afeab88 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.369505] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1fbaa08d82 [ 30.370441] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1fb9e42000 [ 30.371371] RBP: 00007f1fb9e42000 R08: 0000000000000009 R09: 0000000000001000 [ 30.372295] R10: 0000000000000812 R11: 0000000000000206 R12: 00005632a0082ec0 [ 30.373255] R13: 00007ffe2afeaba0 R14: 00007ffe2afeabd0 R15: 00007ffe2afeaf30 [ 30.374191] [ 30.374508] [ 30.374746] Allocated by task 212: [ 30.375219] kasan_save_stack+0x22/0x50 [ 30.375777] kasan_set_track+0x25/0x30 [ 30.376330] __kasan_slab_alloc+0x59/0x70 [ 30.376939] kmem_cache_alloc+0x16b/0x370 [ 30.377616] vm_area_dup+0x20/0x160 [ 30.378119] __split_vma+0x170/0x950 [ 30.378627] split_vma+0xc6/0x110 [ 30.379111] mprotect_fixup+0x8d2/0xb30 [ 30.379660] do_mprotect_pkey+0x87e/0xd40 [ 30.380237] __x64_sys_mprotect+0x78/0xc0 [ 30.380811] do_syscall_64+0x3f/0x90 [ 30.381352] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.382135] [ 30.382374] Freed by task 212: [ 30.382800] kasan_save_stack+0x22/0x50 [ 30.383352] kasan_set_track+0x25/0x30 [ 30.383895] kasan_save_free_info+0x2b/0x50 [ 30.384478] __kasan_slab_free+0x10a/0x190 [ 30.385058] kmem_cache_free+0x10d/0x4d0 [ 30.385625] rcu_core+0x8c8/0x2860 [ 30.386116] __do_softirq+0x1b7/0x7d4 [ 30.386642] [ 30.386878] Last potentially related work creation: [ 30.387514] kasan_save_stack+0x22/0x50 [ 30.388069] __kasan_record_aux_stack+0x8e/0xa0 [ 30.388701] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.389419] remove_vma+0x139/0x170 [ 30.389916] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.390528] do_vmi_munmap+0x1f1/0x2b0 [ 30.391066] __vm_munmap+0x138/0x3a0 [ 30.391586] __x64_sys_munmap+0x59/0x80 [ 30.392134] do_syscall_64+0x3f/0x90 [ 30.392659] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.393374] [ 30.393613] The buggy address belongs to the object at ffff888019fc7ae0 [ 30.393613] which belongs to the cache vm_area_struct of size 168 [ 30.395234] The buggy address is located 88 bytes inside of [ 30.395234] freed 168-byte region [ffff888019fc7ae0, ffff888019fc7b88) [ 30.396775] [ 30.397012] The buggy address belongs to the physical page: [ 30.397745] page:0000000036d36e3c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x19fc7 [ 30.398943] memcg:ffff88800d755e01 [ 30.399405] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.400117] page_type: 0xffffffff() [ 30.400615] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.401650] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d755e01 [ 30.402654] page dumped because: kasan: bad access detected [ 30.403384] [ 30.403621] Memory state around the buggy address: [ 30.404254] ffff888019fc7a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.405204] ffff888019fc7a80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 30.406141] >ffff888019fc7b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.407077] ^ [ 30.407752] ffff888019fc7b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 30.408696] ffff888019fc7c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 30.409652] ================================================================== [ 30.410779] Disabling lock debugging due to kernel taint [ 32.345191] BUG: Bad rss-counter state mm:000000000c9db999 type:MM_FILEPAGES val:33 [ 32.346474] BUG: Bad rss-counter state mm:000000000c9db999 type:MM_ANONPAGES val:22 [ 32.718595] BUG: Bad rss-counter state mm:000000003e5b0edc type:MM_FILEPAGES val:33 [ 32.719468] BUG: Bad rss-counter state mm:000000003e5b0edc type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:64668' (ECDSA) to the list of known hosts. 2023/06/21 06:32:08 fuzzer started 2023/06/21 06:32:08 dialing manager at localhost:36067 2023/06/21 06:32:08 checking machine... 2023/06/21 06:32:08 checking revisions... [ 33.444471] kmemleak: Automatic memory scanning thread ended 2023/06/21 06:32:09 testing simple program... [ 33.494676] cgroup: Unknown subsys name 'net' [ 33.564259] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 06:32:08 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=ffff88800f25ed10 RCX=ffff88800f25ed10 RDX=00000000000d000d RSI=ffff88800f25ed10 RDI=ffff88800844f780 RBP=ffff888016a27a28 RSP=ffff888016a27990 R8 =00000000800d000c R9 =0000000000000000 R10=ffffea00003c9780 R11=00000000000d000c R12=ffffea00003c9780 R13=0000000000000000 R14=00000000000d000c R15=ffff88800844f780 RIP=ffffffff81809672 RFL=00000246 [---Z-P-] 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 00007fceba8f7900 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=00007ffe0e76a000 CR3=000000000ea0c000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 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=00007ffc5a078f68 CR3=000000000fd2c000 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=2038303a32333a3630203132206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732038303a32333a3630203132 XMM08=69767265733d7373616c63742030733a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000