program: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140), 0xa0000, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000080)={0x1, 0x0, [{0x17b, 0x0, 0xffffffffffffffff}]}) r3 = socket$nl_route(0x10, 0x3, 0x0) syz_mount_image$ocfs2(&(0x7f0000004440), &(0x7f0000000040)='./file3\x00', 0x8c0, &(0x7f00000002c0)=ANY=[@ANYBLOB="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"], 0x1, 0x442a, 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r4 = open(&(0x7f0000000180)='./bus\x00', 0x4827e, 0x0) mmap(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x27fffff, 0x4002011, r4, 0x3000) fallocate(r4, 0x0, 0x0, 0x1000f4) r5 = open(&(0x7f0000000000)='./bus\x00', 0x60142, 0x10) r6 = open(&(0x7f00000001c0)='./bus\x00', 0x101000, 0x0) copy_file_range(r6, 0x0, r5, &(0x7f00000000c0)=0x8010000, 0x400000, 0x0) syz_open_procfs(0x0, &(0x7f0000000040)='smaps\x00') read$FUSE(r6, &(0x7f0000004480)={0x2020}, 0x2020) madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xe) mlock(&(0x7f0000000000/0x800000)=nil, 0x800000) mmap(&(0x7f00004e1000/0x3000)=nil, 0x3000, 0x1, 0x12, r3, 0xc042000) madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xe) bind$netlink(0xffffffffffffffff, &(0x7f0000514ff4)={0x10, 0x0, 0x25dfdbfb, 0x40000000}, 0xc) mlock2(&(0x7f0000549000/0x1000)=nil, 0x1000, 0x0) munlockall() madvise(&(0x7f0000000000/0x600000)=nil, 0x600002, 0x8) madvise(&(0x7f0000000000/0x600000)=nil, 0x600003, 0x15) userfaultfd(0x80801) mbind(&(0x7f0000001000/0x800000)=nil, 0x800000, 0x0, 0x0, 0x0, 0x2) [ 85.232356][ T5303] Bluetooth: hci0: command tx timeout [ 85.512216][ T5329] loop0: detected capacity change from 0 to 32768 [ 85.520679][ T5329] ======================================================= [ 85.520679][ T5329] WARNING: The mand mount option has been deprecated and [ 85.520679][ T5329] and is ignored by this kernel. Remove the mand [ 85.520679][ T5329] option from the mount to silence this warning. [ 85.520679][ T5329] ======================================================= [ 85.591765][ T5329] ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode. [ 85.622646][ T25] audit: type=1804 audit(1764200739.569:2): pid=5329 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=invalid_pcr cause=open_writers comm="syz.0.0" name="/newroot/0/file3/bus" dev="loop0" ino=17058 res=1 errno=0 [ 85.759009][ T5329] ================================================================== [ 85.762387][ T5329] BUG: KASAN: slab-use-after-free in ocfs2_fault+0xd3/0x3f0 [ 85.765693][ T5329] Read of size 8 at addr ffff88801157b7d8 by task syz.0.0/5329 [ 85.768955][ T5329] [ 85.770002][ T5329] CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.770017][ T5329] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.770025][ T5329] Call Trace: [ 85.770031][ T5329] [ 85.770037][ T5329] dump_stack_lvl+0x189/0x250 [ 85.770054][ T5329] ? __kasan_check_byte+0x12/0x40 [ 85.770068][ T5329] ? __pfx_dump_stack_lvl+0x10/0x10 [ 85.770081][ T5329] ? lock_release+0x4b/0x3e0 [ 85.770093][ T5329] ? __virt_addr_valid+0x4a5/0x5c0 [ 85.770107][ T5329] print_report+0xca/0x240 [ 85.770120][ T5329] ? ocfs2_fault+0xd3/0x3f0 [ 85.770134][ T5329] kasan_report+0x118/0x150 [ 85.770148][ T5329] ? ocfs2_fault+0xd3/0x3f0 [ 85.770163][ T5329] ocfs2_fault+0xd3/0x3f0 [ 85.770177][ T5329] ? __pfx_ocfs2_fault+0x10/0x10 [ 85.770193][ T5329] __do_fault+0x138/0x390 [ 85.770209][ T5329] __handle_mm_fault+0x35e3/0x5400 [ 85.770224][ T5329] ? __pfx___handle_mm_fault+0x10/0x10 [ 85.770238][ T5329] ? follow_page_pte+0x7ef/0x13e0 [ 85.770251][ T5329] handle_mm_fault+0x40a/0x8e0 [ 85.770266][ T5329] __get_user_pages+0x165c/0x2a00 [ 85.770282][ T5329] populate_vma_page_range+0x29f/0x3a0 [ 85.770294][ T5329] ? __pfx_populate_vma_page_range+0x10/0x10 [ 85.770303][ T5329] ? apply_vma_lock_flags+0x31b/0x390 [ 85.770315][ T5329] ? down_read+0x1ad/0x2e0 [ 85.770365][ T5329] __mm_populate+0x24c/0x380 [ 85.770377][ T5329] ? __pfx___mm_populate+0x10/0x10 [ 85.770387][ T5329] ? up_write+0x1c4/0x420 [ 85.770402][ T5329] do_mlock+0x612/0x720 [ 85.770414][ T5329] ? __pfx_do_mlock+0x10/0x10 [ 85.770424][ T5329] ? rcu_is_watching+0x15/0xb0 [ 85.770438][ T5329] __x64_sys_mlock+0x60/0x70 [ 85.770453][ T5329] do_syscall_64+0xfa/0xfa0 [ 85.770467][ T5329] ? lockdep_hardirqs_on+0x9c/0x150 [ 85.770487][ T5329] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.770497][ T5329] ? clear_bhb_loop+0x60/0xb0 [ 85.770509][ T5329] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.770519][ T5329] RIP: 0033:0x7fb46178f7c9 [ 85.770530][ T5329] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 [ 85.770540][ T5329] RSP: 002b:00007fb462603038 EFLAGS: 00000246 ORIG_RAX: 0000000000000095 [ 85.770552][ T5329] RAX: ffffffffffffffda RBX: 00007fb4619e5fa0 RCX: 00007fb46178f7c9 [ 85.770560][ T5329] RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000200000000000 [ 85.770567][ T5329] RBP: 00007fb461813f91 R08: 0000000000000000 R09: 0000000000000000 [ 85.770573][ T5329] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.770579][ T5329] R13: 00007fb4619e6038 R14: 00007fb4619e5fa0 R15: 00007ffcddfb2c18 [ 85.770591][ T5329] [ 85.770595][ T5329] [ 85.888539][ T5329] Allocated by task 5329: [ 85.890242][ T5329] kasan_save_track+0x3e/0x80 [ 85.892377][ T5329] __kasan_slab_alloc+0x6c/0x80 [ 85.894524][ T5329] kmem_cache_alloc_noprof+0x367/0x6e0 [ 85.896903][ T5329] vm_area_alloc+0x24/0x140 [ 85.898838][ T5329] mmap_region+0xdcd/0x2110 [ 85.901279][ T5329] do_mmap+0xc45/0x10d0 [ 85.903621][ T5329] vm_mmap_pgoff+0x2a6/0x4d0 [ 85.905753][ T5329] ksys_mmap_pgoff+0x51f/0x760 [ 85.907948][ T5329] do_syscall_64+0xfa/0xfa0 [ 85.909795][ T5329] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.912283][ T5329] [ 85.913325][ T5329] Freed by task 5328: [ 85.915020][ T5329] kasan_save_track+0x3e/0x80 [ 85.916979][ T5329] __kasan_save_free_info+0x46/0x50 [ 85.919207][ T5329] __kasan_slab_free+0x5c/0x80 [ 85.921316][ T5329] slab_free_after_rcu_debug+0x12c/0x2a0 [ 85.923763][ T5329] rcu_core+0xcab/0x1770 [ 85.925560][ T5329] handle_softirqs+0x286/0x870 [ 85.927483][ T5329] __irq_exit_rcu+0xca/0x1f0 [ 85.929581][ T5329] irq_exit_rcu+0x9/0x30 [ 85.931415][ T5329] sysvec_apic_timer_interrupt+0xa6/0xc0 [ 85.933872][ T5329] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 85.936515][ T5329] [ 85.937515][ T5329] Last potentially related work creation: [ 85.939939][ T5329] kasan_save_stack+0x3e/0x60 [ 85.941946][ T5329] kasan_record_aux_stack+0xbd/0xd0 [ 85.944255][ T5329] kmem_cache_free+0x4a2/0x690 [ 85.946409][ T5329] vms_complete_munmap_vmas+0x626/0x8a0 [ 85.948970][ T5329] mmap_region+0x10e9/0x2110 [ 85.951008][ T5329] do_mmap+0xc45/0x10d0 [ 85.952809][ T5329] vm_mmap_pgoff+0x2a6/0x4d0 [ 85.954679][ T5329] ksys_mmap_pgoff+0x51f/0x760 [ 85.956699][ T5329] do_syscall_64+0xfa/0xfa0 [ 85.958550][ T5329] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.960943][ T5329] [ 85.961927][ T5329] The buggy address belongs to the object at ffff88801157b780 [ 85.961927][ T5329] which belongs to the cache vm_area_struct of size 256 [ 85.968019][ T5329] The buggy address is located 88 bytes inside of [ 85.968019][ T5329] freed 256-byte region [ffff88801157b780, ffff88801157b880) [ 85.974070][ T5329] [ 85.975118][ T5329] The buggy address belongs to the physical page: [ 85.977981][ T5329] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1157b [ 85.981782][ T5329] memcg:ffff88801159b281 [ 85.983765][ T5329] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) [ 85.986690][ T5329] page_type: f5(slab) [ 85.988493][ T5329] raw: 00fff00000000000 ffff88801b2d2b40 ffffea000046eb40 dead000000000002 [ 85.992176][ T5329] raw: 0000000000000000 00000000000c000c 00000000f5000000 ffff88801159b281 [ 85.995425][ T5329] page dumped because: kasan: bad access detected [ 85.998417][ T5329] page_owner tracks the page as allocated [ 86.001383][ T5329] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 4695, tgid 4695 (rcS), ts 27032811323, free_ts 26099074468 [ 86.009872][ T5329] post_alloc_hook+0x234/0x290 [ 86.012012][ T5329] get_page_from_freelist+0x2365/0x2440 [ 86.014473][ T5329] __alloc_frozen_pages_noprof+0x181/0x370 [ 86.017043][ T5329] alloc_pages_mpol+0x232/0x4a0 [ 86.019117][ T5329] allocate_slab+0x96/0x350 [ 86.021000][ T5329] ___slab_alloc+0xf56/0x1990 [ 86.023052][ T5329] __kmem_cache_alloc_bulk+0x1e2/0x590 [ 86.025312][ T5329] __pcs_replace_empty_main+0x292/0x540 [ 86.027763][ T5329] kmem_cache_alloc_noprof+0x453/0x6e0 [ 86.030169][ T5329] vm_area_dup+0x2b/0x680 [ 86.032070][ T5329] dup_mmap+0x903/0x1b10 [ 86.033925][ T5329] copy_mm+0x13c/0x4b0 [ 86.035685][ T5329] copy_process+0x1706/0x3c00 [ 86.037735][ T5329] kernel_clone+0x21e/0x840 [ 86.039645][ T5329] __x64_sys_clone+0x18b/0x1e0 [ 86.041772][ T5329] do_syscall_64+0xfa/0xfa0 [ 86.043819][ T5329] page last free pid 1 tgid 1 stack trace: [ 86.046372][ T5329] __free_frozen_pages+0xbc4/0xd30 [ 86.048609][ T5329] free_reserved_page+0xce/0x120 [ 86.050798][ T5329] free_reserved_area+0x90/0x190 [ 86.052942][ T5329] free_kernel_image_pages+0xa2/0x100 [ 86.055090][ T5329] kernel_init+0x31/0x1d0 [ 86.056995][ T5329] ret_from_fork+0x4bc/0x870 [ 86.059089][ T5329] ret_from_fork_asm+0x1a/0x30 [ 86.061272][ T5329] [ 86.062440][ T5329] Memory state around the buggy address: [ 86.065209][ T5329] ffff88801157b680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 86.068601][ T5329] ffff88801157b700: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 86.072303][ T5329] >ffff88801157b780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 86.075864][ T5329] ^ [ 86.078811][ T5329] ffff88801157b800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 86.082276][ T5329] ffff88801157b880: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 86.085873][ T5329] ================================================================== [ 86.144368][ T5329] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 86.147594][ T5329] CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 86.151460][ T5329] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 86.155933][ T5329] Call Trace: [ 86.157377][ T5329] [ 86.158635][ T5329] dump_stack_lvl+0x99/0x250 [ 86.160680][ T5329] ? __asan_memcpy+0x40/0x70 [ 86.162836][ T5329] ? __pfx_dump_stack_lvl+0x10/0x10 [ 86.165056][ T5329] ? __pfx__printk+0x10/0x10 [ 86.167123][ T5329] vpanic+0x237/0x6d0 [ 86.168904][ T5329] ? __pfx_vpanic+0x10/0x10 [ 86.170909][ T5329] ? preempt_schedule+0xae/0xc0 [ 86.173187][ T5329] ? __pfx_preempt_schedule+0x10/0x10 [ 86.175859][ T5329] panic+0xb9/0xc0 [ 86.177625][ T5329] ? __pfx_panic+0x10/0x10 [ 86.179567][ T5329] ? _raw_spin_unlock_irqrestore+0xfd/0x110 [ 86.183079][ T5329] ? ocfs2_fault+0xd3/0x3f0 [ 86.185205][ T5329] check_panic_on_warn+0x89/0xb0 [ 86.187428][ T5329] ? ocfs2_fault+0xd3/0x3f0 [ 86.189456][ T5329] end_report+0x78/0x160 [ 86.191375][ T5329] kasan_report+0x129/0x150 [ 86.193515][ T5329] ? ocfs2_fault+0xd3/0x3f0 [ 86.195476][ T5329] ocfs2_fault+0xd3/0x3f0 [ 86.197316][ T5329] ? __pfx_ocfs2_fault+0x10/0x10 [ 86.199445][ T5329] __do_fault+0x138/0x390 [ 86.201379][ T5329] __handle_mm_fault+0x35e3/0x5400 [ 86.203668][ T5329] ? __pfx___handle_mm_fault+0x10/0x10 [ 86.206122][ T5329] ? follow_page_pte+0x7ef/0x13e0 [ 86.208159][ T5329] handle_mm_fault+0x40a/0x8e0 [ 86.210046][ T5329] __get_user_pages+0x165c/0x2a00 [ 86.212023][ T5329] populate_vma_page_range+0x29f/0x3a0 [ 86.214128][ T5329] ? __pfx_populate_vma_page_range+0x10/0x10 [ 86.216570][ T5329] ? apply_vma_lock_flags+0x31b/0x390 [ 86.218792][ T5329] ? down_read+0x1ad/0x2e0 [ 86.220713][ T5329] __mm_populate+0x24c/0x380 [ 86.222755][ T5329] ? __pfx___mm_populate+0x10/0x10 [ 86.225061][ T5329] ? up_write+0x1c4/0x420 [ 86.226737][ T5329] do_mlock+0x612/0x720 [ 86.228417][ T5329] ? __pfx_do_mlock+0x10/0x10 [ 86.230366][ T5329] ? rcu_is_watching+0x15/0xb0 [ 86.232212][ T5329] __x64_sys_mlock+0x60/0x70 [ 86.234320][ T5329] do_syscall_64+0xfa/0xfa0 [ 86.236347][ T5329] ? lockdep_hardirqs_on+0x9c/0x150 [ 86.238671][ T5329] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.241138][ T5329] ? clear_bhb_loop+0x60/0xb0 [ 86.243101][ T5329] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.245605][ T5329] RIP: 0033:0x7fb46178f7c9 [ 86.247541][ T5329] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 [ 86.255222][ T5329] RSP: 002b:00007fb462603038 EFLAGS: 00000246 ORIG_RAX: 0000000000000095 [ 86.258788][ T5329] RAX: ffffffffffffffda RBX: 00007fb4619e5fa0 RCX: 00007fb46178f7c9 [ 86.262059][ T5329] RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000200000000000 [ 86.265423][ T5329] RBP: 00007fb461813f91 R08: 0000000000000000 R09: 0000000000000000 [ 86.268749][ T5329] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 86.272101][ T5329] R13: 00007fb4619e6038 R14: 00007fb4619e5fa0 R15: 00007ffcddfb2c18 [ 86.275369][ T5329] [ 86.277118][ T5329] Kernel Offset: disabled [ 86.279063][ T5329] Rebooting in 86400 seconds..