program: r0 = socket$inet6_sctp(0xa, 0x5, 0x84) getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f0000000100)={0x0, 0x1c, &(0x7f00000001c0)=[@in6={0xa, 0x0, 0x0, @private0}]}, &(0x7f0000000180)=0x10) r1 = socket$inet6_sctp(0xa, 0x5, 0x84) getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r1, 0x84, 0x6f, &(0x7f0000000000)={0x0, 0x38, &(0x7f00000000c0)=[@in6={0xa, 0x4e20, 0x0, @private2}, @in6={0xa, 0x4e20, 0x0, @rand_addr=' \x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02'}]}, &(0x7f0000000180)=0x10) r2 = socket$netlink(0x10, 0x3, 0x4) writev(r2, &(0x7f0000000000)=[{&(0x7f0000000140)="480000001400190d09004beafd0d8c560a84476080ffe00600000000590000a2bc5603ca00000f7f89000000200000000101ff0000000309ff5bffff00c7e5ed5e00000000000000", 0x40b}], 0x1) syz_mount_image$ocfs2(&(0x7f0000004440), &(0x7f0000000040)='./file1\x00', 0x8c0, &(0x7f0000000080)=ANY=[@ANYBLOB='acl,heartbeat=none,dir_resv_level=00003,coherency=full,coherency=full,localflocks,coherency=full,noacl,\x00'/119], 0x1, 0x4421, &(0x7f0000004500)="$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r3 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./file1\x00', 0x42, 0x0) truncate(&(0x7f0000000040)='./file1\x00', 0x1001bfc) mmap(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x27ffff7, 0x4012011, r3, 0x4000) openat$kvm(0xffffffffffffff9c, &(0x7f0000000140), 0x0, 0x0) r4 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r4, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(r4, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(r4, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r4, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) r5 = socket$nl_generic(0x10, 0x3, 0x10) r6 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000200), 0xffffffffffffffff) ioctl$sock_SIOCGIFINDEX_80211(r5, 0x8933, &(0x7f0000000140)={'wlan0\x00', 0x0}) sendmsg$NL80211_CMD_SET_QOS_MAP(r5, &(0x7f0000000280)={0x0, 0x0, &(0x7f00000001c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB='0\x00\x00\x00', @ANYRES16=r6, @ANYBLOB="01002dbd7000fedbdf256800000008000300", @ANYRES32=r7, @ANYBLOB="1400c70007213407"], 0x30}, 0x1, 0x0, 0x0, 0x4000}, 0x8000) r8 = memfd_secret(0x80000) mmap(&(0x7f0000000000/0xfbe000)=nil, 0xfbe000, 0x2, 0x13, r8, 0x0) ftruncate(r8, 0x3) open(&(0x7f0000000300)='./file0\x00', 0x4407e, 0xb6) madvise(&(0x7f0000000000/0x600000)=nil, 0x600003, 0x19) mremap(&(0x7f0000e6a000/0x1000)=nil, 0x1000, 0x1000, 0x0, &(0x7f0000ffe000/0x1000)=nil) r9 = ioctl$KVM_CREATE_VM(r3, 0xae01, 0x40000000001c) r10 = ioctl$KVM_CREATE_VCPU(r9, 0xae41, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r10, &(0x7f0000000000/0x18000)=nil, &(0x7f0000001800)=[@text64={0x40, 0x0}], 0x1, 0x0, 0x0, 0x0) [ 86.486080][ T4687] Bluetooth: hci0: command tx timeout [ 86.878492][ T5349] loop0: detected capacity change from 0 to 32768 [ 86.884683][ T5349] ======================================================= [ 86.884683][ T5349] WARNING: The mand mount option has been deprecated and [ 86.884683][ T5349] and is ignored by this kernel. Remove the mand [ 86.884683][ T5349] option from the mount to silence this warning. [ 86.884683][ T5349] ======================================================= [ 86.995919][ T5349] JBD2: Ignoring recovery information on journal [ 87.052306][ T5349] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 87.347568][ T25] audit: type=1800 audit(1766458246.217:2): pid=5355 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.0" name="file0" dev="loop0" ino=17059 res=0 errno=0 [ 87.357044][ T5349] ================================================================== [ 87.360751][ T5349] BUG: KASAN: slab-use-after-free in ocfs2_fault+0xd3/0x3e0 [ 87.364249][ T5349] Read of size 8 at addr ffff8880417e1a58 by task syz.0.0/5349 [ 87.367534][ T5349] [ 87.368639][ T5349] CPU: 0 UID: 0 PID: 5349 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 87.368654][ T5349] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 87.368660][ T5349] Call Trace: [ 87.368668][ T5349] [ 87.368673][ T5349] dump_stack_lvl+0xe8/0x150 [ 87.368692][ T5349] print_report+0xca/0x240 [ 87.368703][ T5349] ? ocfs2_fault+0xd3/0x3e0 [ 87.368712][ T5349] kasan_report+0x118/0x150 [ 87.368725][ T5349] ? ocfs2_fault+0xd3/0x3e0 [ 87.368734][ T5349] ocfs2_fault+0xd3/0x3e0 [ 87.368743][ T5349] ? __pfx_ocfs2_fault+0x10/0x10 [ 87.368752][ T5349] ? css_rstat_updated+0x239/0x520 [ 87.368770][ T5349] __do_fault+0x138/0x390 [ 87.368786][ T5349] do_pte_missing+0x2206/0x3330 [ 87.368802][ T5349] ? handle_mm_fault+0xdb/0x32b0 [ 87.368815][ T5349] handle_mm_fault+0x1b26/0x32b0 [ 87.368827][ T5349] ? __pte_offset_map_lock+0x13e/0x210 [ 87.368843][ T5349] ? handle_mm_fault+0xdb/0x32b0 [ 87.368857][ T5349] ? __pfx_handle_mm_fault+0x10/0x10 [ 87.368870][ T5349] ? follow_page_pte+0x7ef/0x13e0 [ 87.368884][ T5349] ? __pfx_follow_page_pte+0x10/0x10 [ 87.368897][ T5349] __get_user_pages+0x1650/0x29f0 [ 87.368920][ T5349] populate_vma_page_range+0x29f/0x3a0 [ 87.368931][ T5349] ? __pfx_populate_vma_page_range+0x10/0x10 [ 87.368942][ T5349] ? down_read+0x274/0x2e0 [ 87.369009][ T5349] ? __mm_populate+0x160/0x380 [ 87.369019][ T5349] __mm_populate+0x24c/0x380 [ 87.369031][ T5349] ? __pfx___mm_populate+0x10/0x10 [ 87.369042][ T5349] vm_mmap_pgoff+0x387/0x4d0 [ 87.369054][ T5349] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 87.369065][ T5349] ? __fget_files+0x2a/0x420 [ 87.369078][ T5349] ? __fget_files+0x3a0/0x420 [ 87.369088][ T5349] ? __fget_files+0x2a/0x420 [ 87.369097][ T5349] ksys_mmap_pgoff+0x51f/0x760 [ 87.369111][ T5349] do_syscall_64+0xec/0xf80 [ 87.369122][ T5349] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.369142][ T5349] ? trace_irq_disable+0x37/0x100 [ 87.369156][ T5349] ? clear_bhb_loop+0x60/0xb0 [ 87.369168][ T5349] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.369178][ T5349] RIP: 0033:0x7fa72878f7c9 [ 87.369189][ T5349] 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 [ 87.369223][ T5349] RSP: 002b:00007fa72962a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 87.369236][ T5349] RAX: ffffffffffffffda RBX: 00007fa7289e6180 RCX: 00007fa72878f7c9 [ 87.369243][ T5349] RDX: 00000000027ffff7 RSI: 0000000000600000 RDI: 0000200000000000 [ 87.369250][ T5349] RBP: 00007fa728813f91 R08: 0000000000000007 R09: 0000000000004000 [ 87.369257][ T5349] R10: 0000000004012011 R11: 0000000000000246 R12: 0000000000000000 [ 87.369263][ T5349] R13: 00007fa7289e6218 R14: 00007fa7289e6180 R15: 00007ffc1e32d488 [ 87.369274][ T5349] [ 87.369278][ T5349] [ 87.491906][ T5349] Allocated by task 5349: [ 87.494013][ T5349] kasan_save_track+0x3e/0x80 [ 87.496393][ T5349] __kasan_slab_alloc+0x6c/0x80 [ 87.498585][ T5349] kmem_cache_alloc_noprof+0x37d/0x710 [ 87.500944][ T5349] vm_area_alloc+0x24/0x140 [ 87.502842][ T5349] mmap_region+0xdea/0x1d10 [ 87.504915][ T5349] do_mmap+0xc45/0x10d0 [ 87.506798][ T5349] vm_mmap_pgoff+0x2a6/0x4d0 [ 87.508933][ T5349] ksys_mmap_pgoff+0x51f/0x760 [ 87.511195][ T5349] do_syscall_64+0xec/0xf80 [ 87.513351][ T5349] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.515789][ T5349] [ 87.516911][ T5349] Freed by task 78: [ 87.518641][ T5349] kasan_save_track+0x3e/0x80 [ 87.520767][ T5349] kasan_save_free_info+0x46/0x50 [ 87.522910][ T5349] __kasan_slab_free+0x5c/0x80 [ 87.524760][ T5349] slab_free_after_rcu_debug+0x125/0x260 [ 87.527013][ T5349] rcu_core+0xc8e/0x1720 [ 87.528813][ T5349] handle_softirqs+0x22b/0x7c0 [ 87.530832][ T5349] __irq_exit_rcu+0x60/0x150 [ 87.532807][ T5349] irq_exit_rcu+0x9/0x30 [ 87.534468][ T5349] sysvec_apic_timer_interrupt+0xa6/0xc0 [ 87.537245][ T5349] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 87.540987][ T5349] [ 87.542321][ T5349] Last potentially related work creation: [ 87.545468][ T5349] kasan_save_stack+0x3e/0x60 [ 87.547682][ T5349] kasan_record_aux_stack+0xbd/0xd0 [ 87.549950][ T5349] kmem_cache_free+0x475/0x620 [ 87.552635][ T5349] vms_complete_munmap_vmas+0x626/0x8a0 [ 87.555316][ T5349] __mmap_complete+0x7b/0x610 [ 87.557467][ T5349] mmap_region+0x11e3/0x1d10 [ 87.559423][ T5349] do_mmap+0xc45/0x10d0 [ 87.561248][ T5349] vm_mmap_pgoff+0x2a6/0x4d0 [ 87.564863][ T5349] ksys_mmap_pgoff+0x51f/0x760 [ 87.567132][ T5349] do_syscall_64+0xec/0xf80 [ 87.569226][ T5349] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.572057][ T5349] [ 87.573458][ T5349] The buggy address belongs to the object at ffff8880417e1a00 [ 87.573458][ T5349] which belongs to the cache vm_area_struct of size 256 [ 87.579616][ T5349] The buggy address is located 88 bytes inside of [ 87.579616][ T5349] freed 256-byte region [ffff8880417e1a00, ffff8880417e1b00) [ 87.585026][ T5349] [ 87.586037][ T5349] The buggy address belongs to the physical page: [ 87.588553][ T5349] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x417e1 [ 87.592138][ T5349] memcg:ffff888043c4ba81 [ 87.594243][ T5349] flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) [ 87.598664][ T5349] page_type: f5(slab) [ 87.601441][ T5349] raw: 04fff00000000000 ffff88801b6d2b40 ffffea00010ba180 dead000000000002 [ 87.606080][ T5349] raw: 0000000000000000 00000000000c000c 00000000f5000000 ffff888043c4ba81 [ 87.609813][ T5349] page dumped because: kasan: bad access detected [ 87.612743][ T5349] page_owner tracks the page as allocated [ 87.615251][ T5349] page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5065, tgid 5065 (cmp), ts 53989533347, free_ts 51357104972 [ 87.624675][ T5349] post_alloc_hook+0x234/0x290 [ 87.627464][ T5349] get_page_from_freelist+0x24e0/0x2580 [ 87.630223][ T5349] __alloc_frozen_pages_noprof+0x181/0x370 [ 87.632823][ T5349] alloc_pages_mpol+0x232/0x4a0 [ 87.635070][ T5349] allocate_slab+0x86/0x3b0 [ 87.637130][ T5349] ___slab_alloc+0xe53/0x1820 [ 87.639300][ T5349] __kmem_cache_alloc_bulk+0x1ac/0x4e0 [ 87.641567][ T5349] __pcs_replace_empty_main+0x298/0x560 [ 87.643999][ T5349] kmem_cache_alloc_noprof+0x469/0x710 [ 87.646478][ T5349] vm_area_dup+0x2b/0x680 [ 87.648503][ T5349] __split_vma+0x1a9/0xa00 [ 87.650663][ T5349] vms_gather_munmap_vmas+0x2e2/0x12f0 [ 87.653603][ T5349] mmap_region+0x72b/0x1d10 [ 87.655676][ T5349] do_mmap+0xc45/0x10d0 [ 87.657548][ T5349] vm_mmap_pgoff+0x2a6/0x4d0 [ 87.659600][ T5349] ksys_mmap_pgoff+0x51f/0x760 [ 87.661795][ T5349] page last free pid 4739 tgid 4739 stack trace: [ 87.664530][ T5349] __free_frozen_pages+0xbc8/0xd30 [ 87.666833][ T5349] free_pipe_info+0x2d1/0x3a0 [ 87.668933][ T5349] pipe_release+0x242/0x330 [ 87.671087][ T5349] __fput+0x44c/0xa70 [ 87.673059][ T5349] fput_close_sync+0x113/0x220 [ 87.675483][ T5349] __x64_sys_close+0x7f/0x110 [ 87.677917][ T5349] do_syscall_64+0xec/0xf80 [ 87.680002][ T5349] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.682584][ T5349] [ 87.683655][ T5349] Memory state around the buggy address: [ 87.686058][ T5349] ffff8880417e1900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 87.689486][ T5349] ffff8880417e1980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 87.693097][ T5349] >ffff8880417e1a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 87.696799][ T5349] ^ [ 87.699817][ T5349] ffff8880417e1a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 87.703460][ T5349] ffff8880417e1b00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 87.707064][ T5349] ================================================================== [ 87.761627][ T5349] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 87.765797][ T5349] CPU: 0 UID: 0 PID: 5349 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 87.769723][ T5349] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 87.774162][ T5349] Call Trace: [ 87.775555][ T5349] [ 87.776779][ T5349] vpanic+0x1e0/0x670 [ 87.778463][ T5349] panic+0xb9/0xc0 [ 87.780121][ T5349] ? __pfx_panic+0x10/0x10 [ 87.782155][ T5349] ? preempt_schedule_thunk+0x16/0x30 [ 87.784471][ T5349] ? ocfs2_fault+0xd3/0x3e0 [ 87.786480][ T5349] check_panic_on_warn+0x89/0xb0 [ 87.788726][ T5349] ? ocfs2_fault+0xd3/0x3e0 [ 87.790775][ T5349] end_report+0x6f/0x140 [ 87.792832][ T5349] kasan_report+0x129/0x150 [ 87.794806][ T5349] ? ocfs2_fault+0xd3/0x3e0 [ 87.796896][ T5349] ocfs2_fault+0xd3/0x3e0 [ 87.798941][ T5349] ? __pfx_ocfs2_fault+0x10/0x10 [ 87.801164][ T5349] ? css_rstat_updated+0x239/0x520 [ 87.803492][ T5349] __do_fault+0x138/0x390 [ 87.805339][ T5349] do_pte_missing+0x2206/0x3330 [ 87.807624][ T5349] ? handle_mm_fault+0xdb/0x32b0 [ 87.810068][ T5349] handle_mm_fault+0x1b26/0x32b0 [ 87.812671][ T5349] ? __pte_offset_map_lock+0x13e/0x210 [ 87.815517][ T5349] ? handle_mm_fault+0xdb/0x32b0 [ 87.817814][ T5349] ? __pfx_handle_mm_fault+0x10/0x10 [ 87.820061][ T5349] ? follow_page_pte+0x7ef/0x13e0 [ 87.822377][ T5349] ? __pfx_follow_page_pte+0x10/0x10 [ 87.824673][ T5349] __get_user_pages+0x1650/0x29f0 [ 87.826795][ T5349] populate_vma_page_range+0x29f/0x3a0 [ 87.828948][ T5349] ? __pfx_populate_vma_page_range+0x10/0x10 [ 87.831417][ T5349] ? down_read+0x274/0x2e0 [ 87.833559][ T5349] ? __mm_populate+0x160/0x380 [ 87.835710][ T5349] __mm_populate+0x24c/0x380 [ 87.837720][ T5349] ? __pfx___mm_populate+0x10/0x10 [ 87.839957][ T5349] vm_mmap_pgoff+0x387/0x4d0 [ 87.842079][ T5349] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 87.844489][ T5349] ? __fget_files+0x2a/0x420 [ 87.846634][ T5349] ? __fget_files+0x3a0/0x420 [ 87.848785][ T5349] ? __fget_files+0x2a/0x420 [ 87.850990][ T5349] ksys_mmap_pgoff+0x51f/0x760 [ 87.852990][ T5349] do_syscall_64+0xec/0xf80 [ 87.854982][ T5349] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.857625][ T5349] ? trace_irq_disable+0x37/0x100 [ 87.859725][ T5349] ? clear_bhb_loop+0x60/0xb0 [ 87.861940][ T5349] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.864285][ T5349] RIP: 0033:0x7fa72878f7c9 [ 87.866252][ T5349] 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 [ 87.874689][ T5349] RSP: 002b:00007fa72962a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 87.878295][ T5349] RAX: ffffffffffffffda RBX: 00007fa7289e6180 RCX: 00007fa72878f7c9 [ 87.881812][ T5349] RDX: 00000000027ffff7 RSI: 0000000000600000 RDI: 0000200000000000 [ 87.885501][ T5349] RBP: 00007fa728813f91 R08: 0000000000000007 R09: 0000000000004000 [ 87.888951][ T5349] R10: 0000000004012011 R11: 0000000000000246 R12: 0000000000000000 [ 87.892435][ T5349] R13: 00007fa7289e6218 R14: 00007fa7289e6180 R15: 00007ffc1e32d488 [ 87.895817][ T5349] [ 87.897471][ T5349] Kernel Offset: disabled [ 87.899307][ T5349] Rebooting in 86400 seconds..