syzkaller login: [ 30.733754] BUG: Bad rss-counter state mm:0000000080d2aa32 type:MM_FILEPAGES val:33 [ 30.734886] BUG: Bad rss-counter state mm:0000000080d2aa32 type:MM_ANONPAGES val:22 [ 30.782441] ================================================================== [ 30.783545] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.784636] Read of size 8 at addr ffff88800dfe7228 by task sshd/219 [ 30.785746] [ 30.785990] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.786907] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.787975] Call Trace: [ 30.788333] [ 30.788668] dump_stack_lvl+0x91/0xf0 [ 30.789203] print_report+0xcc/0x620 [ 30.789754] ? __virt_addr_valid+0x102/0x340 [ 30.790349] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.791008] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.791682] kasan_report+0xbe/0xf0 [ 30.792203] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.792889] vma_interval_tree_remove+0xc75/0xec0 [ 30.793533] vma_prepare+0xc54/0x11a0 [ 30.794040] __split_vma+0x5af/0x950 [ 30.794540] ? __pfx___split_vma+0x10/0x10 [ 30.795094] ? find_held_lock+0x2c/0x110 [ 30.795647] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.796248] ? lock_is_held_type+0x9f/0x120 [ 30.796833] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.797469] ? mtree_range_walk+0x632/0x900 [ 30.798057] ? mas_walk+0x5c7/0x7c0 [ 30.798574] do_vmi_munmap+0x1f1/0x2b0 [ 30.799104] mmap_region+0x1f9/0x2660 [ 30.799623] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.800173] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.800959] ? __pfx_lock_acquire+0x10/0x10 [ 30.801539] ? __pfx_mmap_region+0x10/0x10 [ 30.802113] ? security_mmap_addr+0x7d/0xa0 [ 30.802687] ? get_unmapped_area+0x1f5/0x3f0 [ 30.803286] do_mmap+0x854/0xf00 [ 30.803766] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.804299] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.804919] ksys_mmap_pgoff+0x3af/0x500 [ 30.805471] do_syscall_64+0x3f/0x90 [ 30.805992] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.806691] RIP: 0033:0x7f1df9104d82 [ 30.807181] 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 [ 30.809470] RSP: 002b:00007ffdd6dbbdc8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.810456] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1df9104d82 [ 30.811363] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1df853e000 [ 30.812273] RBP: 00007f1df853e000 R08: 0000000000000009 R09: 0000000000001000 [ 30.813183] R10: 0000000000000812 R11: 0000000000000206 R12: 000055e64bba8ec0 [ 30.814100] R13: 00007ffdd6dbbde0 R14: 00007ffdd6dbbe10 R15: 00007ffdd6dbc170 [ 30.815017] [ 30.815327] [ 30.815561] Allocated by task 212: [ 30.816014] kasan_save_stack+0x22/0x50 [ 30.816610] kasan_set_track+0x25/0x30 [ 30.817150] __kasan_slab_alloc+0x59/0x70 [ 30.817720] kmem_cache_alloc+0x16b/0x370 [ 30.818276] vm_area_dup+0x20/0x160 [ 30.818768] __split_vma+0x170/0x950 [ 30.819273] split_vma+0xc6/0x110 [ 30.819752] mprotect_fixup+0x8d2/0xb30 [ 30.820292] do_mprotect_pkey+0x87e/0xd40 [ 30.820863] __x64_sys_mprotect+0x78/0xc0 [ 30.821425] do_syscall_64+0x3f/0x90 [ 30.821944] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.822671] [ 30.822912] Freed by task 212: [ 30.823341] kasan_save_stack+0x22/0x50 [ 30.823884] kasan_set_track+0x25/0x30 [ 30.824418] kasan_save_free_info+0x2b/0x50 [ 30.825017] __kasan_slab_free+0x10a/0x190 [ 30.825599] kmem_cache_free+0x10d/0x4d0 [ 30.826150] rcu_core+0x8c8/0x2860 [ 30.826639] __do_softirq+0x1b7/0x7d4 [ 30.827155] [ 30.827391] Last potentially related work creation: [ 30.828016] kasan_save_stack+0x22/0x50 [ 30.828573] __kasan_record_aux_stack+0x8e/0xa0 [ 30.829199] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.829903] remove_vma+0x139/0x170 [ 30.830398] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.831005] do_vmi_munmap+0x1f1/0x2b0 [ 30.831533] __vm_munmap+0x138/0x3a0 [ 30.832043] __x64_sys_munmap+0x59/0x80 [ 30.832612] do_syscall_64+0x3f/0x90 [ 30.833134] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.833834] [ 30.834067] Second to last potentially related work creation: [ 30.834811] kasan_save_stack+0x22/0x50 [ 30.835360] __kasan_record_aux_stack+0x8e/0xa0 [ 30.835989] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.836697] remove_vma+0x139/0x170 [ 30.837194] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.837807] do_vmi_munmap+0x1f1/0x2b0 [ 30.838339] mmap_region+0x1f9/0x2660 [ 30.838861] do_mmap+0x854/0xf00 [ 30.839335] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.839870] ksys_mmap_pgoff+0x3af/0x500 [ 30.840421] do_syscall_64+0x3f/0x90 [ 30.840951] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.841653] [ 30.841885] The buggy address belongs to the object at ffff88800dfe71d0 [ 30.841885] which belongs to the cache vm_area_struct of size 168 [ 30.843492] The buggy address is located 88 bytes inside of [ 30.843492] freed 168-byte region [ffff88800dfe71d0, ffff88800dfe7278) [ 30.845036] [ 30.845272] The buggy address belongs to the physical page: [ 30.845980] page:00000000da2c1e79 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdfe7 [ 30.847150] memcg:ffff88800e0c3001 [ 30.847613] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.848317] page_type: 0xffffffff() [ 30.848814] raw: 0100000000000200 ffff8880087a0c80 ffffea0000366c80 dead000000000006 [ 30.849825] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e0c3001 [ 30.850822] page dumped because: kasan: bad access detected [ 30.851552] [ 30.851793] Memory state around the buggy address: [ 30.852435] ffff88800dfe7100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.853384] ffff88800dfe7180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 30.854330] >ffff88800dfe7200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 30.855268] ^ [ 30.855875] ffff88800dfe7280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 30.856838] ffff88800dfe7300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 30.857762] ================================================================== [ 30.858874] Disabling lock debugging due to kernel taint [ 33.167963] BUG: Bad rss-counter state mm:000000001696ed3a type:MM_FILEPAGES val:33 [ 33.169127] BUG: Bad rss-counter state mm:000000001696ed3a type:MM_ANONPAGES val:22 [ 33.631798] BUG: Bad rss-counter state mm:000000009ebcc168 type:MM_FILEPAGES val:33 [ 33.632796] BUG: Bad rss-counter state mm:000000009ebcc168 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:9974' (ECDSA) to the list of known hosts. 2023/06/20 14:44:06 fuzzer started 2023/06/20 14:44:06 dialing manager at localhost:36067 2023/06/20 14:44:06 checking machine... 2023/06/20 14:44:06 checking revisions... [ 34.272676] kmemleak: Automatic memory scanning thread ended 2023/06/20 14:44:06 testing simple program... [ 34.326978] cgroup: Unknown subsys name 'net' [ 34.366602] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 14:44:06 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=ffffffff8453684b RDX=fffffbfff0adb095 RSI=0000000000000004 RDI=ffffffff856d84a0 RBP=ffffffff856d84a0 RSP=ffff88806ce09c90 R8 =0000000000000000 R9 =fffffbfff0adb094 R10=ffffffff856d84a3 R11=00000000000b6a61 R12=0000000000000003 R13=fffffbfff0adb094 R14=0000000000000001 R15=1ffff1100d9c1393 RIP=ffffffff845368c8 RFL=00000002 [-------] 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 00007fa5afc35900 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=00007fa5b01ec618 CR3=000000001cd7e000 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=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 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=00007fab83019000 CR3=000000000d63c000 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=88e4d89942d03ea83243d083df0d58e3 XMM02=2c67c8bc2e329bc3000000000011a258 XMM03=fb795ef6d65770560000000000121480 XMM04=ea04b7cf7ac076aa00000000000ae988 XMM05=84807bbdab9878260000000000133758 XMM06=806171799158d96700000000001327f8 XMM07=e042d86d42eb936e0000000000121700 XMM08=700a7e4a52428dad000000000011a2b8 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000