[ 30.491275] BUG: Bad rss-counter state mm:00000000a8f7460b type:MM_FILEPAGES val:33 [ 30.492198] BUG: Bad rss-counter state mm:00000000a8f7460b type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 30.935894] ================================================================== [ 30.936845] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.937831] Read of size 8 at addr ffff88801a3b1968 by task sshd/220 [ 30.938614] [ 30.938834] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.939851] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.940841] Call Trace: [ 30.941187] [ 30.941475] dump_stack_lvl+0x91/0xf0 [ 30.941997] print_report+0xcc/0x620 [ 30.942493] ? __virt_addr_valid+0x102/0x340 [ 30.943062] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.943694] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.944316] kasan_report+0xbe/0xf0 [ 30.944793] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.945442] vma_interval_tree_remove+0xc75/0xec0 [ 30.946052] vma_prepare+0xc54/0x11a0 [ 30.946540] __split_vma+0x5af/0x950 [ 30.947031] ? __pfx___split_vma+0x10/0x10 [ 30.947571] ? find_held_lock+0x2c/0x110 [ 30.948096] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.948665] ? lock_is_held_type+0x9f/0x120 [ 30.949218] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.949832] ? mtree_range_walk+0x632/0x900 [ 30.950388] ? mas_walk+0x5c7/0x7c0 [ 30.950863] do_vmi_munmap+0x1f1/0x2b0 [ 30.951361] mmap_region+0x1f9/0x2660 [ 30.951848] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.952369] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.953101] ? __pfx_lock_acquire+0x10/0x10 [ 30.953652] ? __pfx_mmap_region+0x10/0x10 [ 30.954188] ? security_mmap_addr+0x7d/0xa0 [ 30.954723] ? get_unmapped_area+0x1f5/0x3f0 [ 30.955282] do_mmap+0x854/0xf00 [ 30.955725] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.956221] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.956789] ksys_mmap_pgoff+0x3af/0x500 [ 30.957316] do_syscall_64+0x3f/0x90 [ 30.957798] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.958448] RIP: 0033:0x7f7355e1dd82 [ 30.958909] 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 [ 30.961048] RSP: 002b:00007ffd40a5bdc8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.961966] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f7355e1dd82 [ 30.962816] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f7355257000 [ 30.963665] RBP: 00007f7355257000 R08: 0000000000000009 R09: 0000000000001000 [ 30.964528] R10: 0000000000000812 R11: 0000000000000206 R12: 000055bd3c64aec0 [ 30.965392] R13: 00007ffd40a5bde0 R14: 00007ffd40a5be10 R15: 00007ffd40a5c170 [ 30.966257] [ 30.966549] [ 30.966765] Allocated by task 205: [ 30.967194] kasan_save_stack+0x22/0x50 [ 30.967698] kasan_set_track+0x25/0x30 [ 30.968198] __kasan_slab_alloc+0x59/0x70 [ 30.968726] kmem_cache_alloc+0x16b/0x370 [ 30.969260] vm_area_dup+0x20/0x160 [ 30.969734] __split_vma+0x170/0x950 [ 30.970212] split_vma+0xc6/0x110 [ 30.970653] mprotect_fixup+0x8d2/0xb30 [ 30.971152] do_mprotect_pkey+0x87e/0xd40 [ 30.971677] __x64_sys_mprotect+0x78/0xc0 [ 30.972202] do_syscall_64+0x3f/0x90 [ 30.972672] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.973320] [ 30.973536] Freed by task 205: [ 30.973934] kasan_save_stack+0x22/0x50 [ 30.974447] kasan_set_track+0x25/0x30 [ 30.974947] kasan_save_free_info+0x2b/0x50 [ 30.975481] __kasan_slab_free+0x10a/0x190 [ 30.976016] kmem_cache_free+0x10d/0x4d0 [ 30.976529] rcu_core+0x8c8/0x2860 [ 30.976973] __do_softirq+0x1b7/0x7d4 [ 30.977468] [ 30.977686] Last potentially related work creation: [ 30.978272] kasan_save_stack+0x22/0x50 [ 30.978783] __kasan_record_aux_stack+0x8e/0xa0 [ 30.979362] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.980005] remove_vma+0x139/0x170 [ 30.980464] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.981029] do_vmi_munmap+0x1f1/0x2b0 [ 30.981529] __vm_munmap+0x138/0x3a0 [ 30.982005] __x64_sys_munmap+0x59/0x80 [ 30.982507] do_syscall_64+0x3f/0x90 [ 30.982977] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.983625] [ 30.983842] The buggy address belongs to the object at ffff88801a3b1910 [ 30.983842] which belongs to the cache vm_area_struct of size 168 [ 30.985348] The buggy address is located 88 bytes inside of [ 30.985348] freed 168-byte region [ffff88801a3b1910, ffff88801a3b19b8) [ 30.986737] [ 30.986951] The buggy address belongs to the physical page: [ 30.987612] page:00000000a662bc4a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a3b1 [ 30.988756] memcg:ffff88801a3b2001 [ 30.989201] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.989848] page_type: 0xffffffff() [ 30.990301] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 30.991231] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a3b2001 [ 30.992130] page dumped because: kasan: bad access detected [ 30.992794] [ 30.993013] Memory state around the buggy address: [ 30.993621] ffff88801a3b1800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 [ 30.994476] ffff88801a3b1880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 30.995336] >ffff88801a3b1900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.996182] ^ [ 30.996964] ffff88801a3b1980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 30.997830] ffff88801a3b1a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.998686] ================================================================== [ 30.999635] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 33.019531] BUG: Bad rss-counter state mm:0000000004b6f5f8 type:MM_FILEPAGES val:33 [ 33.020679] BUG: Bad rss-counter state mm:0000000004b6f5f8 type:MM_ANONPAGES val:22 [ 33.509468] BUG: Bad rss-counter state mm:00000000eb130668 type:MM_FILEPAGES val:33 [ 33.510738] BUG: Bad rss-counter state mm:00000000eb130668 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:13336' (ECDSA) to the list of known hosts. [ 33.550223] general protection fault, probably for non-canonical address 0xe0a8fc2c80000014: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 33.551828] KASAN: maybe wild-memory-access in range [0x05480164000000a0-0x05480164000000a7] [ 33.552837] CPU: 1 PID: 236 Comm: sshd Tainted: G B 6.4.0-rc7-next-20230619 #1 [ 33.553909] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 33.554895] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0 [ 33.555554] Code: c2 48 c1 ea 03 42 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48 [ 33.557737] RSP: 0018:ffff8880095f7880 EFLAGS: 00010216 [ 33.558401] RAX: ffff8880192b68e0 RBX: ffff8880162883e0 RCX: ffffffff844ce9f9 [ 33.559269] RDX: 00a9002c80000014 RSI: 0000000000000008 RDI: ffff888015f44008 [ 33.560131] RBP: ffff88801635c0c0 R08: ffff888015f44008 R09: 0000000000000000 [ 33.560978] R10: 0000000000000000 R11: 00000000000b6996 R12: ffff888015f44000 [ 33.561855] R13: dffffc0000000000 R14: 05480164000000a3 R15: ffffffff816e61c0 [ 33.562713] FS: 00007fb9e9064900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 [ 33.563677] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.564386] CR2: 00007fb9e902b000 CR3: 000000001632e000 CR4: 0000000000350ee0 [ 33.565255] Call Trace: [ 33.565576] [ 33.565860] ? die_addr+0x3c/0xa0 [ 33.566298] ? exc_general_protection+0x125/0x220 [ 33.566902] ? asm_exc_general_protection+0x26/0x30 [ 33.567529] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 33.568263] ? __rb_insert_augmented+0x5e9/0x8b0 [ 33.568849] ? __rb_insert_augmented+0x9d/0x8b0 [ 33.569442] vma_complete+0x107/0xfd0 [ 33.569922] ? vma_prepare+0xc54/0x11a0 [ 33.570408] __split_vma+0x7ca/0x950 [ 33.570876] ? __pfx___split_vma+0x10/0x10 [ 33.571398] ? __pfx_lock_acquire+0x10/0x10 [ 33.571929] ? lock_acquire+0x434/0x4c0 [ 33.572419] do_vmi_align_munmap+0x361/0x11f0 [ 33.572977] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 33.573588] ? mtree_range_walk+0x632/0x900 [ 33.574134] ? mas_walk+0x5c7/0x7c0 [ 33.574612] do_vmi_munmap+0x1f1/0x2b0 [ 33.575099] mmap_region+0x1f9/0x2660 [ 33.575585] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 33.576296] ? __pfx_lock_acquire+0x10/0x10 [ 33.576831] ? __pfx_mmap_region+0x10/0x10 [ 33.577373] ? security_mmap_addr+0x7d/0xa0 [ 33.577897] ? get_unmapped_area+0x1f5/0x3f0 [ 33.578444] do_mmap+0x854/0xf00 [ 33.578882] vm_mmap_pgoff+0x1a6/0x3a0 [ 33.579374] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 33.579940] ksys_mmap_pgoff+0x3af/0x500 [ 33.580444] do_syscall_64+0x3f/0x90 [ 33.580916] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.581582] RIP: 0033:0x7fb9e9bf6d82 [ 33.582033] 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 [ 33.584125] RSP: 002b:00007ffdf90eaad8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 33.585029] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb9e9bf6d82 [ 33.585882] RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00007fb9e9027000 [ 33.586713] RBP: 00007fb9e9027000 R08: 0000000000000008 R09: 0000000000002000 [ 33.587543] R10: 0000000000000812 R11: 0000000000000206 R12: 0000555fd9f598b0 [ 33.588398] R13: 00007ffdf90eaaf0 R14: 00007ffdf90eab50 R15: 00007ffdf90eae80 [ 33.589269] [ 33.589556] Modules linked in: [ 33.590058] ---[ end trace 0000000000000000 ]--- [ 33.590645] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0 [ 33.591321] Code: c2 48 c1 ea 03 42 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48 [ 33.593749] RSP: 0018:ffff8880095f7880 EFLAGS: 00010216 [ 33.594724] RAX: ffff8880192b68e0 RBX: ffff8880162883e0 RCX: ffffffff844ce9f9 [ 33.595903] RDX: 00a9002c80000014 RSI: 0000000000000008 RDI: ffff888015f44008 [ 33.596968] RBP: ffff88801635c0c0 R08: ffff888015f44008 R09: 0000000000000000 [ 33.597993] R10: 0000000000000000 R11: 00000000000b6996 R12: ffff888015f44000 [ 33.598967] R13: dffffc0000000000 R14: 05480164000000a3 R15: ffffffff816e61c0 [ 33.599868] FS: 00007fb9e9064900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 [ 33.600867] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.601615] CR2: 00007fb9e902b000 CR3: 000000001632e000 CR4: 0000000000350ee0 VM DIAGNOSIS: 18:10:00 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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=00007ffca95f9318 CR3=00000000163aa000 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=2037303a30313a3831203931206e754a XMM01=657463656e6e6f63736944203a5d3732 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3732325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732037303a30313a3831203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff888016490eb0 RCX=ffffffff8189dc32 RDX=ffff888014618000 RSI=0000000000000000 RDI=0000000000000001 RBP=ffff888014617788 RSP=ffff888014617630 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000001 R11=0000000000000001 R12=0000000000000001 R13=ffff888014617758 R14=ffff888014617788 R15=ffff888014617750 RIP=ffffffff814c07e4 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 00007f016e8c1900 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=00007f7f727a9650 CR3=000000000c71a000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=2ac65c07e6cea79800000000000ae988 XMM05=3c37a6d9fe7cc6aa0000000000134638 XMM06=ba16eec38af56afb0000000000133068 XMM07=fb795ef6d657705600000000001204a8 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000