syzkaller login: [ 34.135317] BUG: Bad rss-counter state mm:000000008e2c10d0 type:MM_FILEPAGES val:33 [ 34.136320] BUG: Bad rss-counter state mm:000000008e2c10d0 type:MM_ANONPAGES val:22 [ 34.304257] ================================================================== [ 34.305337] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 34.306631] Read of size 8 at addr ffff88800f093df0 by task sshd/223 [ 34.307528] [ 34.307786] CPU: 1 PID: 223 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 34.308813] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 34.309835] Call Trace: [ 34.310150] [ 34.310443] dump_stack_lvl+0x91/0xf0 [ 34.310934] print_report+0xcc/0x620 [ 34.311410] ? __virt_addr_valid+0x102/0x340 [ 34.311964] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.312582] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.313205] kasan_report+0xbe/0xf0 [ 34.313683] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.314294] vma_interval_tree_remove+0xc75/0xec0 [ 34.314902] vma_prepare+0xc54/0x11a0 [ 34.315372] __split_vma+0x5af/0x950 [ 34.315837] ? __pfx___split_vma+0x10/0x10 [ 34.316360] ? find_held_lock+0x2c/0x110 [ 34.316873] do_vmi_align_munmap+0x2ba/0x11f0 [ 34.317439] ? lock_is_held_type+0x9f/0x120 [ 34.317972] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 34.318596] ? mtree_range_walk+0x632/0x900 [ 34.319143] ? mas_walk+0x5c7/0x7c0 [ 34.319610] do_vmi_munmap+0x1f1/0x2b0 [ 34.320102] mmap_region+0x1f9/0x2660 [ 34.320580] ? vm_mmap_pgoff+0x15c/0x3a0 [ 34.321088] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 34.321799] ? __pfx_lock_acquire+0x10/0x10 [ 34.322333] ? __pfx_mmap_region+0x10/0x10 [ 34.322878] ? security_mmap_addr+0x7d/0xa0 [ 34.323422] ? get_unmapped_area+0x1f5/0x3f0 [ 34.323964] do_mmap+0x854/0xf00 [ 34.324417] vm_mmap_pgoff+0x1a6/0x3a0 [ 34.324912] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 34.325472] ksys_mmap_pgoff+0x3af/0x500 [ 34.325981] do_syscall_64+0x3f/0x90 [ 34.326476] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.327114] RIP: 0033:0x7fae1c51ad82 [ 34.327573] 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 [ 34.329679] RSP: 002b:00007ffd1b3370e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 34.330584] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fae1c51ad82 [ 34.331429] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fae1b954000 [ 34.332279] RBP: 00007fae1b954000 R08: 0000000000000009 R09: 0000000000001000 [ 34.333113] R10: 0000000000000812 R11: 0000000000000206 R12: 000055f58aed0ec0 [ 34.333946] R13: 00007ffd1b337100 R14: 00007ffd1b337130 R15: 00007ffd1b337490 [ 34.334800] [ 34.335089] [ 34.335305] Allocated by task 216: [ 34.335736] kasan_save_stack+0x22/0x50 [ 34.336245] kasan_set_track+0x25/0x30 [ 34.336731] __kasan_slab_alloc+0x59/0x70 [ 34.337246] kmem_cache_alloc+0x16b/0x370 [ 34.337762] vm_area_dup+0x20/0x160 [ 34.338211] __split_vma+0x170/0x950 [ 34.338687] split_vma+0xc6/0x110 [ 34.339125] mprotect_fixup+0x8d2/0xb30 [ 34.339624] do_mprotect_pkey+0x87e/0xd40 [ 34.340144] __x64_sys_mprotect+0x78/0xc0 [ 34.340662] do_syscall_64+0x3f/0x90 [ 34.341136] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.341772] [ 34.341989] Freed by task 216: [ 34.342381] kasan_save_stack+0x22/0x50 [ 34.342884] kasan_set_track+0x25/0x30 [ 34.343376] kasan_save_free_info+0x2b/0x50 [ 34.343903] __kasan_slab_free+0x10a/0x190 [ 34.344430] kmem_cache_free+0x10d/0x4d0 [ 34.344936] rcu_core+0x8c8/0x2860 [ 34.345378] __do_softirq+0x1b7/0x7d4 [ 34.345848] [ 34.346060] Last potentially related work creation: [ 34.346659] kasan_save_stack+0x22/0x50 [ 34.347157] __kasan_record_aux_stack+0x8e/0xa0 [ 34.347751] __call_rcu_common.constprop.0+0x6a/0xb90 [ 34.348433] remove_vma+0x139/0x170 [ 34.348917] do_vmi_align_munmap+0xd4a/0x11f0 [ 34.349499] do_vmi_munmap+0x1f1/0x2b0 [ 34.349997] __vm_munmap+0x138/0x3a0 [ 34.350485] __x64_sys_munmap+0x59/0x80 [ 34.351010] do_syscall_64+0x3f/0x90 [ 34.351503] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.352169] [ 34.352391] The buggy address belongs to the object at ffff88800f093d98 [ 34.352391] which belongs to the cache vm_area_struct of size 168 [ 34.353921] The buggy address is located 88 bytes inside of [ 34.353921] freed 168-byte region [ffff88800f093d98, ffff88800f093e40) [ 34.355410] [ 34.355633] The buggy address belongs to the physical page: [ 34.356317] page:000000002acdaa9a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf093 [ 34.357432] memcg:ffff88800e008f01 [ 34.357878] flags: 0x100000000000200(slab|node=0|zone=1) [ 34.358561] page_type: 0xffffffff() [ 34.359030] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 34.359981] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e008f01 [ 34.360915] page dumped because: kasan: bad access detected [ 34.361602] [ 34.361823] Memory state around the buggy address: [ 34.362423] ffff88800f093c80: fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 [ 34.363305] ffff88800f093d00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc [ 34.364202] >ffff88800f093d80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 34.365081] ^ [ 34.365917] ffff88800f093e00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 34.366816] ffff88800f093e80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.367695] ================================================================== [ 34.368924] Disabling lock debugging due to kernel taint [ 36.424497] BUG: Bad rss-counter state mm:000000003b577056 type:MM_FILEPAGES val:33 [ 36.425675] BUG: Bad rss-counter state mm:000000003b577056 type:MM_ANONPAGES val:22 [ 36.807945] BUG: Bad rss-counter state mm:0000000062a6d8d5 type:MM_FILEPAGES val:33 [ 36.808979] BUG: Bad rss-counter state mm:0000000062a6d8d5 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:8650' (ECDSA) to the list of known hosts. 2023/06/19 19:56:08 fuzzer started 2023/06/19 19:56:09 dialing manager at localhost:44161 2023/06/19 19:56:09 checking machine... 2023/06/19 19:56:09 checking revisions... [ 37.545290] kmemleak: Automatic memory scanning thread ended 2023/06/19 19:56:09 testing simple program... [ 37.597680] cgroup: Unknown subsys name 'net' [ 37.645519] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 19:56:05 Registers: info registers vcpu 0 RAX=ffffffff8196ce14 RBX=ffffffff813ad420 RCX=0000000000000001 RDX=1ffff11002b06ef3 RSI=ffffffff8196ce14 RDI=ffff888015837808 RBP=ffff8880158377d8 RSP=ffff888015837738 R8 =0000000000000001 R9 =ffff888015837780 R10=0000000000038001 R11=0000000000020c48 R12=ffff888015837808 R13=0000000000000000 R14=ffff888015838000 R15=ffff88801a126390 RIP=ffffffff813ad424 RFL=00000286 [--S--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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007ff6d2849900 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=00007ff6d1d69020 CR3=000000000d628000 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=454d49544c4145525f454352554f535f XMM01=3d504d415453454d49545f454d49544c XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=455c06b91fb5bb9000000000000ae988 XMM05=64e3e0b3c748e1cf0000000000134cb8 XMM06=db20f175d54767f00000000000133d58 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000038 RCX=0000000000000000 RDX=ffff888016903680 RSI=000000000000000e RDI=ffff88800fd7fbf8 RBP=00007ffed765cfa0 RSP=ffff88800fd7fba8 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=00007ffed765cfa0 R13=ffff88800fd7fbf8 R14=ffff88800fd7fcf8 R15=ffff88800fd7fcd8 RIP=ffffffff8217c4bf RFL=00000293 [--S-A-C] 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 00007f7582720900 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=00007f7582cd7618 CR3=000000001966a000 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=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