syzkaller login: [ 30.698753] BUG: Bad rss-counter state mm:000000003443a335 type:MM_FILEPAGES val:33 [ 30.699979] BUG: Bad rss-counter state mm:000000003443a335 type:MM_ANONPAGES val:22 [ 30.735153] ================================================================== [ 30.736076] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.737013] Read of size 8 at addr ffff88800e9fcd08 by task sshd/220 [ 30.737778] [ 30.737988] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.738844] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.739826] Call Trace: [ 30.740126] [ 30.740473] dump_stack_lvl+0x91/0xf0 [ 30.740976] print_report+0xcc/0x620 [ 30.741429] ? __virt_addr_valid+0x102/0x340 [ 30.741948] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.742527] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.743158] kasan_report+0xbe/0xf0 [ 30.743698] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.744350] vma_interval_tree_remove+0xc75/0xec0 [ 30.744935] vma_prepare+0xc54/0x11a0 [ 30.745430] __split_vma+0x5af/0x950 [ 30.745953] ? __pfx___split_vma+0x10/0x10 [ 30.746508] ? find_held_lock+0x2c/0x110 [ 30.747055] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.747601] ? lock_is_held_type+0x9f/0x120 [ 30.748121] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.748701] ? mtree_range_walk+0x632/0x900 [ 30.749250] ? mas_walk+0x5c7/0x7c0 [ 30.749721] do_vmi_munmap+0x1f1/0x2b0 [ 30.750210] mmap_region+0x1f9/0x2660 [ 30.750683] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.751215] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.751918] ? __pfx_lock_acquire+0x10/0x10 [ 30.752442] ? __pfx_mmap_region+0x10/0x10 [ 30.752964] ? security_mmap_addr+0x7d/0xa0 [ 30.753483] ? get_unmapped_area+0x1f5/0x3f0 [ 30.754020] do_mmap+0x854/0xf00 [ 30.754449] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.754945] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.755515] ksys_mmap_pgoff+0x3af/0x500 [ 30.756014] do_syscall_64+0x3f/0x90 [ 30.756488] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.757126] RIP: 0033:0x7fa2828eed82 [ 30.757570] 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 [ 30.759663] RSP: 002b:00007ffe18728d68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.760551] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa2828eed82 [ 30.761369] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa281d28000 [ 30.762209] RBP: 00007fa281d28000 R08: 0000000000000009 R09: 0000000000001000 [ 30.763044] R10: 0000000000000812 R11: 0000000000000206 R12: 000056087eb58f70 [ 30.763974] R13: 00007ffe18728d80 R14: 00007ffe18728db0 R15: 00007ffe18729110 [ 30.764802] [ 30.765090] [ 30.765301] Allocated by task 213: [ 30.765717] kasan_save_stack+0x22/0x50 [ 30.766224] kasan_set_track+0x25/0x30 [ 30.766709] __kasan_slab_alloc+0x59/0x70 [ 30.767225] kmem_cache_alloc+0x16b/0x370 [ 30.767731] vm_area_dup+0x20/0x160 [ 30.768178] __split_vma+0x170/0x950 [ 30.768638] split_vma+0xc6/0x110 [ 30.769071] mprotect_fixup+0x8d2/0xb30 [ 30.769551] do_mprotect_pkey+0x87e/0xd40 [ 30.770065] __x64_sys_mprotect+0x78/0xc0 [ 30.770571] do_syscall_64+0x3f/0x90 [ 30.771049] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.771684] [ 30.771891] Freed by task 213: [ 30.772274] kasan_save_stack+0x22/0x50 [ 30.772764] kasan_set_track+0x25/0x30 [ 30.773248] kasan_save_free_info+0x2b/0x50 [ 30.773764] __kasan_slab_free+0x10a/0x190 [ 30.774277] kmem_cache_free+0x10d/0x4d0 [ 30.774767] rcu_core+0x8c8/0x2860 [ 30.775235] __do_softirq+0x1b7/0x7d4 [ 30.775706] [ 30.775920] Last potentially related work creation: [ 30.776496] kasan_save_stack+0x22/0x50 [ 30.777003] __kasan_record_aux_stack+0x8e/0xa0 [ 30.777556] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.778193] remove_vma+0x139/0x170 [ 30.778632] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.779189] do_vmi_munmap+0x1f1/0x2b0 [ 30.779660] __vm_munmap+0x138/0x3a0 [ 30.780120] __x64_sys_munmap+0x59/0x80 [ 30.780606] do_syscall_64+0x3f/0x90 [ 30.781070] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.781705] [ 30.781919] Second to last potentially related work creation: [ 30.782595] kasan_save_stack+0x22/0x50 [ 30.783079] __kasan_record_aux_stack+0x8e/0xa0 [ 30.783626] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.784234] remove_vma+0x139/0x170 [ 30.784659] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.785184] do_vmi_munmap+0x1f1/0x2b0 [ 30.785649] mmap_region+0x1f9/0x2660 [ 30.786108] do_mmap+0x854/0xf00 [ 30.786518] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.786980] ksys_mmap_pgoff+0x3af/0x500 [ 30.787477] do_syscall_64+0x3f/0x90 [ 30.787927] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.788534] [ 30.788738] The buggy address belongs to the object at ffff88800e9fccb0 [ 30.788738] which belongs to the cache vm_area_struct of size 168 [ 30.790119] The buggy address is located 88 bytes inside of [ 30.790119] freed 168-byte region [ffff88800e9fccb0, ffff88800e9fcd58) [ 30.791497] [ 30.791711] The buggy address belongs to the physical page: [ 30.792365] page:0000000033ddeda9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe9fc [ 30.793430] memcg:ffff88800ed69c01 [ 30.793852] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 30.794542] page_type: 0xffffffff() [ 30.794989] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 30.795922] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ed69c01 [ 30.796820] page dumped because: kasan: bad access detected [ 30.797471] [ 30.797681] Memory state around the buggy address: [ 30.798263] ffff88800e9fcc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 30.799121] ffff88800e9fcc80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 30.799976] >ffff88800e9fcd00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 30.800820] ^ [ 30.801251] ffff88800e9fcd80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.802106] ffff88800e9fce00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 30.802956] ================================================================== [ 30.803883] Disabling lock debugging due to kernel taint [ 32.684278] BUG: Bad rss-counter state mm:000000001e16b411 type:MM_FILEPAGES val:33 [ 32.685206] BUG: Bad rss-counter state mm:000000001e16b411 type:MM_ANONPAGES val:22 [ 33.150753] BUG: Bad rss-counter state mm:00000000859ed58c type:MM_FILEPAGES val:33 [ 33.151741] BUG: Bad rss-counter state mm:00000000859ed58c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:62072' (ECDSA) to the list of known hosts. 2023/06/20 18:32:37 fuzzer started 2023/06/20 18:32:37 dialing manager at localhost:36067 2023/06/20 18:32:37 checking machine... 2023/06/20 18:32:37 checking revisions... [ 33.841633] kmemleak: Automatic memory scanning thread ended 2023/06/20 18:32:37 testing simple program... [ 33.896653] cgroup: Unknown subsys name 'net' [ 33.946690] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:32:37 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=00007ffce418a488 CR3=000000000dfa6000 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=2037333a32333a3831203032206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036333a32333a3831203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff88801a03b390 RCX=ffff88800844f780 RDX=ffffea0000680ec0 RSI=0000000000000004 RDI=ffff88806cf40140 RBP=0000000000000000 RSP=ffff888016597be8 R8 =ffff88801a03b4c0 R9 =ffffed100d9e8028 R10=ffff88806cf40143 R11=00000000000d0000 R12=dffffc0000000000 R13=ffff888016597c28 R14=ffff88800844f780 R15=ffff88801a03abe0 RIP=ffffffff81810316 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 00007f058ba09900 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=00007f058bfc0618 CR3=000000000f1c6000 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