syzkaller login: [ 30.751312] BUG: Bad rss-counter state mm:000000003244ce20 type:MM_FILEPAGES val:33 [ 30.752544] BUG: Bad rss-counter state mm:000000003244ce20 type:MM_ANONPAGES val:22 [ 30.793360] ================================================================== [ 30.794300] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.795210] Read of size 8 at addr ffff88800f25b5c8 by task sshd/221 [ 30.795966] [ 30.796178] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.797013] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.797969] Call Trace: [ 30.798282] [ 30.798560] dump_stack_lvl+0x91/0xf0 [ 30.799041] print_report+0xcc/0x620 [ 30.799510] ? __virt_addr_valid+0x102/0x340 [ 30.800060] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.800665] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.801266] kasan_report+0xbe/0xf0 [ 30.801731] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.802336] vma_interval_tree_remove+0xc75/0xec0 [ 30.802925] vma_prepare+0xc54/0x11a0 [ 30.803393] __split_vma+0x5af/0x950 [ 30.803883] ? __pfx___split_vma+0x10/0x10 [ 30.804401] ? find_held_lock+0x2c/0x110 [ 30.804911] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.805464] ? lock_is_held_type+0x9f/0x120 [ 30.805993] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.806590] ? mtree_range_walk+0x632/0x900 [ 30.807133] ? mas_walk+0x5c7/0x7c0 [ 30.807596] do_vmi_munmap+0x1f1/0x2b0 [ 30.808080] mmap_region+0x1f9/0x2660 [ 30.808552] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.809051] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.809743] ? __pfx_lock_acquire+0x10/0x10 [ 30.810264] ? __pfx_mmap_region+0x10/0x10 [ 30.810783] ? security_mmap_addr+0x7d/0xa0 [ 30.811300] ? get_unmapped_area+0x1f5/0x3f0 [ 30.811845] do_mmap+0x854/0xf00 [ 30.812273] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.812760] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.813311] ksys_mmap_pgoff+0x3af/0x500 [ 30.813806] do_syscall_64+0x3f/0x90 [ 30.814275] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.814904] RIP: 0033:0x7f13d19f7d82 [ 30.815354] 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 [ 30.817439] RSP: 002b:00007ffc839ade78 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.818317] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f13d19f7d82 [ 30.819157] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f13d0e31000 [ 30.819988] RBP: 00007f13d0e31000 R08: 0000000000000009 R09: 0000000000001000 [ 30.820823] R10: 0000000000000812 R11: 0000000000000206 R12: 0000561b75a3fec0 [ 30.821659] R13: 00007ffc839ade90 R14: 00007ffc839adec0 R15: 00007ffc839ae220 [ 30.822501] [ 30.822791] [ 30.823002] Allocated by task 214: [ 30.823424] kasan_save_stack+0x22/0x50 [ 30.823931] kasan_set_track+0x25/0x30 [ 30.824423] __kasan_slab_alloc+0x59/0x70 [ 30.824941] kmem_cache_alloc+0x16b/0x370 [ 30.825453] vm_area_dup+0x20/0x160 [ 30.825901] __split_vma+0x170/0x950 [ 30.826365] split_vma+0xc6/0x110 [ 30.826798] mprotect_fixup+0x8d2/0xb30 [ 30.827295] do_mprotect_pkey+0x87e/0xd40 [ 30.827828] __x64_sys_mprotect+0x78/0xc0 [ 30.828345] do_syscall_64+0x3f/0x90 [ 30.828817] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.829454] [ 30.829672] Freed by task 214: [ 30.830062] kasan_save_stack+0x22/0x50 [ 30.830557] kasan_set_track+0x25/0x30 [ 30.831047] kasan_save_free_info+0x2b/0x50 [ 30.831571] __kasan_slab_free+0x10a/0x190 [ 30.832103] kmem_cache_free+0x10d/0x4d0 [ 30.832607] rcu_core+0x8c8/0x2860 [ 30.833047] __do_softirq+0x1b7/0x7d4 [ 30.833517] [ 30.833732] Last potentially related work creation: [ 30.834313] kasan_save_stack+0x22/0x50 [ 30.834813] __kasan_record_aux_stack+0x8e/0xa0 [ 30.835381] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.836029] remove_vma+0x139/0x170 [ 30.836469] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.837020] do_vmi_munmap+0x1f1/0x2b0 [ 30.837502] __vm_munmap+0x138/0x3a0 [ 30.837965] __x64_sys_munmap+0x59/0x80 [ 30.838453] do_syscall_64+0x3f/0x90 [ 30.838923] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.839560] [ 30.839780] The buggy address belongs to the object at ffff88800f25b570 [ 30.839780] which belongs to the cache vm_area_struct of size 168 [ 30.841227] The buggy address is located 88 bytes inside of [ 30.841227] freed 168-byte region [ffff88800f25b570, ffff88800f25b618) [ 30.842608] [ 30.842827] The buggy address belongs to the physical page: [ 30.843473] page:00000000ff40d1e3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf25b [ 30.844549] memcg:ffff88800f204101 [ 30.844970] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.845605] page_type: 0xffffffff() [ 30.846052] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.846967] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f204101 [ 30.847868] page dumped because: kasan: bad access detected [ 30.848521] [ 30.848735] Memory state around the buggy address: [ 30.849309] ffff88800f25b480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.850153] ffff88800f25b500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 30.851001] >ffff88800f25b580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.851846] ^ [ 30.852501] ffff88800f25b600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.853346] ffff88800f25b680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.854183] ================================================================== [ 30.855140] Disabling lock debugging due to kernel taint [ 33.004962] BUG: Bad rss-counter state mm:000000005863abd3 type:MM_FILEPAGES val:33 [ 33.006140] BUG: Bad rss-counter state mm:000000005863abd3 type:MM_ANONPAGES val:22 [ 33.469426] BUG: Bad rss-counter state mm:0000000028b958ea type:MM_FILEPAGES val:33 [ 33.470516] BUG: Bad rss-counter state mm:0000000028b958ea type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:41265' (ECDSA) to the list of known hosts. 2023/06/20 11:45:47 fuzzer started 2023/06/20 11:45:47 dialing manager at localhost:36067 2023/06/20 11:45:47 checking machine... 2023/06/20 11:45:47 checking revisions... [ 34.077024] kmemleak: Automatic memory scanning thread ended 2023/06/20 11:45:48 testing simple program... [ 34.133387] cgroup: Unknown subsys name 'net' [ 34.214972] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:45:47 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=1ffff110013f0f63 RCX=0000000000000001 RDX=0000000000000800 RSI=000000000000000a RDI=ffff888009f87b38 RBP=0000000000000010 RSP=ffff888009f87aa8 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000001 R13=0000000000000800 R14=ffff888009f87b38 R15=ffff88800efd1000 RIP=ffffffff813ad5f0 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 00007f927fe7f900 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=00007f92804370b0 CR3=000000000f02c000 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=25252525252525252525252525252525 XMM01=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=662079726f6d656d20666f2074756f00 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=ffff888008c04400 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=00007fd7504f5b30 CR3=000000000f0ec000 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=2037343a35343a3131203032206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732037343a35343a3131203032 XMM08=69767265733d7373616c63742030733a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000