[ 31.492112] BUG: Bad rss-counter state mm:000000007a36d553 type:MM_FILEPAGES val:33 [ 31.492910] BUG: Bad rss-counter state mm:000000007a36d553 type:MM_ANONPAGES val:22 [ 31.642170] ================================================================== [ 31.643272] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.644408] Read of size 8 at addr ffff8880199cca50 by task sshd/219 [ 31.645418] [ 31.645674] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.646726] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.647951] Call Trace: [ 31.648345] [ 31.648679] dump_stack_lvl+0x91/0xf0 [ 31.649266] print_report+0xcc/0x620 [ 31.649841] ? __virt_addr_valid+0x102/0x340 [ 31.650505] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.651254] ? vma_interval_tree_remove+0xc75/0xec0 Debian GNU/Li[ 31.651885] kasan_report+0xbe/0xf0 nux 11 syzkaller[ 31.652556] ? vma_interval_tree_remove+0xc75/0xec0 ttyS0 syzkal[ 31.653355] vma_interval_tree_remove+0xc75/0xec0 ler login: [ 31.654127] vma_prepare+0xc54/0x11a0 [ 31.654728] __split_vma+0x5af/0x950 [ 31.655210] ? __pfx___split_vma+0x10/0x10 [ 31.655738] ? find_held_lock+0x2c/0x110 [ 31.656247] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.656797] ? lock_is_held_type+0x9f/0x120 [ 31.657322] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.657926] ? mtree_range_walk+0x632/0x900 [ 31.658476] ? mas_walk+0x5c7/0x7c0 [ 31.658945] do_vmi_munmap+0x1f1/0x2b0 [ 31.659441] mmap_region+0x1f9/0x2660 [ 31.659913] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.660415] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.661121] ? __pfx_lock_acquire+0x10/0x10 [ 31.661648] ? __pfx_mmap_region+0x10/0x10 [ 31.662163] ? security_mmap_addr+0x7d/0xa0 [ 31.662681] ? get_unmapped_area+0x1f5/0x3f0 [ 31.663234] do_mmap+0x854/0xf00 [ 31.663666] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.664160] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.664713] ksys_mmap_pgoff+0x3af/0x500 [ 31.665220] do_syscall_64+0x3f/0x90 [ 31.665680] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.666307] RIP: 0033:0x7f2179c75d82 [ 31.666760] 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 [ 31.668870] RSP: 002b:00007ffddf6fd5d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.669770] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f2179c75d82 [ 31.670615] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f21790af000 [ 31.671473] RBP: 00007f21790af000 R08: 0000000000000009 R09: 0000000000001000 [ 31.672312] R10: 0000000000000812 R11: 0000000000000206 R12: 000055de56ed5b20 [ 31.673162] R13: 00007ffddf6fd5f0 R14: 00007ffddf6fd620 R15: 00007ffddf6fd980 [ 31.674028] [ 31.674321] [ 31.674532] Allocated by task 212: [ 31.674959] kasan_save_stack+0x22/0x50 [ 31.675459] kasan_set_track+0x25/0x30 [ 31.675945] __kasan_slab_alloc+0x59/0x70 [ 31.676472] kmem_cache_alloc+0x16b/0x370 [ 31.676992] vm_area_dup+0x20/0x160 [ 31.677438] __split_vma+0x170/0x950 [ 31.677904] split_vma+0xc6/0x110 [ 31.678330] mprotect_fixup+0x8d2/0xb30 [ 31.678826] do_mprotect_pkey+0x87e/0xd40 [ 31.679365] __x64_sys_mprotect+0x78/0xc0 [ 31.679887] do_syscall_64+0x3f/0x90 [ 31.680348] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.680971] [ 31.681186] Freed by task 212: [ 31.681564] kasan_save_stack+0x22/0x50 [ 31.682065] kasan_set_track+0x25/0x30 [ 31.682547] kasan_save_free_info+0x2b/0x50 [ 31.683073] __kasan_slab_free+0x10a/0x190 [ 31.683618] kmem_cache_free+0x10d/0x4d0 [ 31.684131] rcu_core+0x8c8/0x2860 [ 31.684570] __do_softirq+0x1b7/0x7d4 [ 31.685042] [ 31.685259] Last potentially related work creation: [ 31.685843] kasan_save_stack+0x22/0x50 [ 31.686331] __kasan_record_aux_stack+0x8e/0xa0 [ 31.686891] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.687638] remove_vma+0x139/0x170 [ 31.688092] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.688636] do_vmi_munmap+0x1f1/0x2b0 [ 31.689117] __vm_munmap+0x138/0x3a0 [ 31.689579] __x64_sys_munmap+0x59/0x80 [ 31.690076] do_syscall_64+0x3f/0x90 [ 31.690539] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.691176] [ 31.691395] The buggy address belongs to the object at ffff8880199cc9f8 [ 31.691395] which belongs to the cache vm_area_struct of size 168 [ 31.692855] The buggy address is located 88 bytes inside of [ 31.692855] freed 168-byte region [ffff8880199cc9f8, ffff8880199ccaa0) [ 31.694251] [ 31.694458] The buggy address belongs to the physical page: [ 31.695108] page:000000007cc65529 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x199cc [ 31.696646] memcg:ffff88800e036801 [ 31.697225] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.698106] page_type: 0xffffffff() [ 31.698722] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 31.699982] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e036801 [ 31.701220] page dumped because: kasan: bad access detected [ 31.702112] [ 31.702401] Memory state around the buggy address: [ 31.703211] ffff8880199cc900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.704281] ffff8880199cc980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 31.705199] >ffff8880199cca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.706110] ^ [ 31.706860] ffff8880199cca80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 31.707785] ffff8880199ccb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.708697] ================================================================== [ 31.709891] Disabling lock debugging due to kernel taint [ 33.653134] BUG: Bad rss-counter state mm:00000000f5e748f0 type:MM_FILEPAGES val:33 [ 33.654547] BUG: Bad rss-counter state mm:00000000f5e748f0 type:MM_ANONPAGES val:22 [ 34.100597] BUG: Bad rss-counter state mm:000000002968bbd2 type:MM_FILEPAGES val:33 [ 34.101759] BUG: Bad rss-counter state mm:000000002968bbd2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:29631' (ECDSA) to the list of known hosts. 2023/06/19 21:41:15 fuzzer started 2023/06/19 21:41:16 dialing manager at localhost:44161 2023/06/19 21:41:16 checking machine... 2023/06/19 21:41:16 checking revisions... [ 34.672053] kmemleak: Automatic memory scanning thread ended 2023/06/19 21:41:16 testing simple program... [ 34.723299] cgroup: Unknown subsys name 'net' [ 34.784636] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 21:41:14 Registers: info registers vcpu 0 RAX=ffff88800cbe0001 RBX=ffff88800cbdfaa0 RCX=0000000000000001 RDX=ffff88800cbdfb01 RSI=ffff88800cbdfb38 RDI=ffff88800cbdfab0 RBP=ffff88800cbdfb38 RSP=ffff88800cbdf9a8 R8 =0000000000000001 R9 =ffff88800cbdfae0 R10=0000000000038001 R11=0000000000003c0d R12=0000000000000008 R13=ffff88800cbd8000 R14=ffff88800cbdfb38 R15=ffff88800cbdfaa0 RIP=ffffffff811304c9 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 00007f84d269b900 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=00007f84d2c530b0 CR3=000000000f28e000 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=ffffffffffffffffffffffff00000000 XMM01=000000000000000000005500746f6f72 XMM02=00000000000000000000000000000000 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=2f3a746f6f723a303a303a3a746f6f72 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=ffff888008c58400 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=00007f7e9fd940a0 CR3=0000000013a44000 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=35917bca86aaaa80d446d7b1a94ce293 XMM02=ec2efd57dc4c00df000000000011dac0 XMM03=8af2ecbf9b903442000000000011db90 XMM04=64817cf663040d9400000000000ae988 XMM05=dfcdbad4f1609c370000000000133da8 XMM06=5020213a11b036510000000000132f80 XMM07=e042d86d42eb936e00000000001247a8 XMM08=8af2ecbf9b903442000000000011db90 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000