syzkaller login: [ 30.574513] BUG: Bad rss-counter state mm:0000000060f8068a type:MM_FILEPAGES val:33 [ 30.576038] BUG: Bad rss-counter state mm:0000000060f8068a type:MM_ANONPAGES val:22 [ 30.712786] ================================================================== [ 30.713724] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.714728] Read of size 8 at addr ffff8880095c05c8 by task sshd/219 [ 30.715528] [ 30.715758] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.716870] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.717895] Call Trace: [ 30.718236] [ 30.718535] dump_stack_lvl+0x91/0xf0 [ 30.719084] print_report+0xcc/0x620 [ 30.719588] ? __virt_addr_valid+0x102/0x340 [ 30.720164] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.720812] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.721473] kasan_report+0xbe/0xf0 [ 30.721979] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.722654] vma_interval_tree_remove+0xc75/0xec0 [ 30.723297] vma_prepare+0xc54/0x11a0 [ 30.723798] __split_vma+0x5af/0x950 [ 30.724285] ? __pfx___split_vma+0x10/0x10 [ 30.724844] ? find_held_lock+0x2c/0x110 [ 30.725388] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.725978] ? lock_is_held_type+0x9f/0x120 [ 30.726545] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.727173] ? mtree_range_walk+0x632/0x900 [ 30.727730] ? mas_walk+0x5c7/0x7c0 [ 30.728210] do_vmi_munmap+0x1f1/0x2b0 [ 30.728708] mmap_region+0x1f9/0x2660 [ 30.729218] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.729747] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.730515] ? __pfx_lock_acquire+0x10/0x10 [ 30.731073] ? __pfx_mmap_region+0x10/0x10 [ 30.731627] ? security_mmap_addr+0x7d/0xa0 [ 30.732192] ? get_unmapped_area+0x1f5/0x3f0 [ 30.732776] do_mmap+0x854/0xf00 [ 30.733239] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.733770] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.734396] ksys_mmap_pgoff+0x3af/0x500 [ 30.734933] do_syscall_64+0x3f/0x90 [ 30.735430] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.736104] RIP: 0033:0x7f2fdb7fad82 [ 30.736593] 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 [ 30.738902] RSP: 002b:00007ffdaea15b68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.739879] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f2fdb7fad82 [ 30.740796] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f2fdac34000 [ 30.741710] RBP: 00007f2fdac34000 R08: 0000000000000009 R09: 0000000000001000 [ 30.742627] R10: 0000000000000812 R11: 0000000000000206 R12: 000056346a443ec0 [ 30.743543] R13: 00007ffdaea15b80 R14: 00007ffdaea15bb0 R15: 00007ffdaea15f10 [ 30.744458] [ 30.744768] [ 30.744994] Allocated by task 212: [ 30.745461] kasan_save_stack+0x22/0x50 [ 30.746011] kasan_set_track+0x25/0x30 [ 30.746546] __kasan_slab_alloc+0x59/0x70 [ 30.747101] kmem_cache_alloc+0x16b/0x370 [ 30.747656] vm_area_dup+0x20/0x160 [ 30.748144] __split_vma+0x170/0x950 [ 30.748641] split_vma+0xc6/0x110 [ 30.749117] mprotect_fixup+0x8d2/0xb30 [ 30.749645] do_mprotect_pkey+0x87e/0xd40 [ 30.750195] __x64_sys_mprotect+0x78/0xc0 [ 30.750761] do_syscall_64+0x3f/0x90 [ 30.751272] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.751954] [ 30.752181] Freed by task 19: [ 30.752592] kasan_save_stack+0x22/0x50 [ 30.753137] kasan_set_track+0x25/0x30 [ 30.753674] kasan_save_free_info+0x2b/0x50 [ 30.754289] __kasan_slab_free+0x10a/0x190 [ 30.754867] kmem_cache_free+0x10d/0x4d0 [ 30.755407] rcu_core+0x8c8/0x2860 [ 30.755888] __do_softirq+0x1b7/0x7d4 [ 30.756396] [ 30.756623] Last potentially related work creation: [ 30.757252] kasan_save_stack+0x22/0x50 [ 30.757869] __kasan_record_aux_stack+0x8e/0xa0 [ 30.758485] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.759167] remove_vma+0x139/0x170 [ 30.759652] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.760241] do_vmi_munmap+0x1f1/0x2b0 [ 30.760766] __vm_munmap+0x138/0x3a0 [ 30.761271] __x64_sys_munmap+0x59/0x80 [ 30.761808] do_syscall_64+0x3f/0x90 [ 30.762333] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.763029] [ 30.763254] The buggy address belongs to the object at ffff8880095c0570 [ 30.763254] which belongs to the cache vm_area_struct of size 168 [ 30.764835] The buggy address is located 88 bytes inside of [ 30.764835] freed 168-byte region [ffff8880095c0570, ffff8880095c0618) [ 30.766377] [ 30.766610] The buggy address belongs to the physical page: [ 30.767317] page:00000000bfbe5a13 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x95c0 [ 30.768481] memcg:ffff88800c9cbe01 [ 30.768935] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 30.769689] page_type: 0xffffffff() [ 30.770188] raw: 0100000000000200 ffff88800879fc80 0000000000000000 dead000000000001 [ 30.771177] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c9cbe01 [ 30.772144] page dumped because: kasan: bad access detected [ 30.772865] [ 30.773092] Memory state around the buggy address: [ 30.773711] ffff8880095c0480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.774646] ffff8880095c0500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 30.775572] >ffff8880095c0580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.776495] ^ [ 30.777208] ffff8880095c0600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.778149] ffff8880095c0680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.779065] ================================================================== [ 30.780223] Disabling lock debugging due to kernel taint [ 32.891304] BUG: Bad rss-counter state mm:00000000631b1215 type:MM_FILEPAGES val:33 [ 32.892270] BUG: Bad rss-counter state mm:00000000631b1215 type:MM_ANONPAGES val:22 [ 33.305539] BUG: Bad rss-counter state mm:00000000be2e5960 type:MM_FILEPAGES val:33 [ 33.306573] BUG: Bad rss-counter state mm:00000000be2e5960 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:13294' (ECDSA) to the list of known hosts. 2023/06/19 13:25:07 fuzzer started 2023/06/19 13:25:08 dialing manager at localhost:44161 2023/06/19 13:25:08 checking machine... 2023/06/19 13:25:08 checking revisions... [ 34.025139] kmemleak: Automatic memory scanning thread ended 2023/06/19 13:25:08 testing simple program... [ 34.070216] cgroup: Unknown subsys name 'net' [ 34.110439] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 13:25:07 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=00007f03ddae5000 RCX=0000000000000000 RDX=ffff888016b051c0 RSI=0000000000000043 RDI=0000000000000043 RBP=0000000000000043 RSP=ffff8880198c7cf8 R8 =0000000000000007 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=000000001a6dc067 R13=ffff88800d802768 R14=ffff8880198c7df0 R15=0000000000000000 RIP=ffffffff814c03b4 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f03dd52d900 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=00007f03ddae50b0 CR3=000000000f834000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffffffff0bb5963 RBX=ffffffff85dacb1c RCX=ffffffff812d8ec2 RDX=0000000000000000 RSI=ffffffff860bf68e RDI=ffffffff85dacb00 RBP=ffffffff85dacb1c RSP=ffff88806cf099e0 R8 =ffffffff860bf68e R9 =ffff88806cf09ad8 R10=0000000000038001 R11=000000000000cdcb R12=ffffffff85dacb1c R13=ffffffff85dacb00 R14=ffffffff85dacb18 R15=dffffc0000000000 RIP=ffffffff8112fc7a RFL=00000217 [----APC] 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 00007fc632b77900 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=00007fc631f67bd0 CR3=000000000c604000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=f2feb782e9b6654900000000000ae988 XMM05=7212d312e21beaaf00000000001346d0 XMM06=7bd67474ba5b44250000000000133470 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000