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socket$nl_route(0x10, 0x3, 0x0) (async) socket$nl_route(0x10, 0x3, 0x0) madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0xc) (async) madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0xc) sendmsg$netlink(0xffffffffffffffff, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000000), 0x0, 0x0, 0x0, 0x48095}, 0x0) (async) sendmsg$netlink(0xffffffffffffffff, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000000), 0x0, 0x0, 0x0, 0x48095}, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./file1\x00', 0xc4042, 0x1ff) renameat(0xffffffffffffffff, &(0x7f0000001d40)='./file0\x00', 0xffffffffffffffff, &(0x7f0000001c40)='./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x00') prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000040)={0x3, &(0x7f0000000080)=[{}, {0x20, 0x0, 0x0, 0x2000020}, {0x6}]}) r1 = socket(0x10, 0x3, 0x0) recvmmsg$unix(r1, &(0x7f0000003180)=[{{0x0, 0x0, 0x0}}], 0x1, 0x0, 0x0) write(r1, 0x0, 0x0) (async) write(r1, 0x0, 0x0) preadv(0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0) r2 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./file1\x00', 0x42, 0x0) truncate(&(0x7f0000000900)='./file1\x00', 0x3000000) mmap(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x27ffff7, 0x4012011, r2, 0x0) (async) mmap(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x27ffff7, 0x4012011, r2, 0x0) r3 = socket$inet6(0xa, 0x2, 0x0) setsockopt$SO_ATTACH_FILTER(r3, 0x1, 0x1a, &(0x7f0000000300)={0x1, &(0x7f00000000c0)=[{0x16, 0x6, 0x3, 0x7ff}]}, 0x10) bind$inet6(r3, &(0x7f0000000000)={0xa, 0xe22, 0x0, @empty}, 0x7d) (async) bind$inet6(r3, &(0x7f0000000000)={0xa, 0xe22, 0x0, @empty}, 0x7d) setsockopt$inet_group_source_req(r0, 0x0, 0x2c, &(0x7f0000000340)={0x74b7, {{0x2, 0x4e22, @loopback}}, {{0x2, 0x4e23, @loopback}}}, 0x108) syz_emit_ethernet(0x42, &(0x7f0000000100)={@link_local, @broadcast, @void, {@ipv6={0x86dd, @udp={0x0, 0x6, "010700", 0xc, 0x11, 0x0, @private1, @mcast2, {[], {0x0, 0xe22, 0xc, 0x0, @gue={{0x1, 0x0, 0x0, 0x0, 0x0, @void}}}}}}}}, 0x0) ioctl$SNDCTL_TMR_SOURCE(r1, 0xc0045406) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) (async) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) r4 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000140), 0x2000, 0x0) sendfile(r0, r4, 0x0, 0x20fffe82) (async) sendfile(r0, r4, 0x0, 0x20fffe82) r5 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0) syz_open_dev$vbi(&(0x7f0000000000), 0x1, 0x2) (async) syz_open_dev$vbi(&(0x7f0000000000), 0x1, 0x2) getdents(r5, &(0x7f0000000000)=""/149, 0x95) [ 80.932485][ T5302] Bluetooth: hci0: command tx timeout [ 81.613213][ T5325] loop0: detected capacity change from 0 to 32768 [ 81.634990][ T5325] ======================================================= [ 81.634990][ T5325] WARNING: The mand mount option has been deprecated and [ 81.634990][ T5325] and is ignored by this kernel. Remove the mand [ 81.634990][ T5325] option from the mount to silence this warning. [ 81.634990][ T5325] ======================================================= [ 81.748694][ T5325] JBD2: Ignoring recovery information on journal [ 81.834145][ T5325] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 81.879561][ T24] audit: type=1800 audit(1773732581.464:2): pid=5325 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.0" name="file1" dev="loop0" ino=17058 res=0 errno=0 [ 81.944402][ T5326] Zero length message leads to an empty skb [ 82.002473][ T5326] ================================================================== [ 82.006719][ T5326] BUG: KASAN: slab-use-after-free in ocfs2_fault+0xdb/0x440 [ 82.009950][ T5326] Read of size 8 at addr ffff888042ba1698 by task syz.0.0/5326 [ 82.014221][ T5326] [ 82.015709][ T5326] CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 82.015727][ T5326] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 82.015743][ T5326] Call Trace: [ 82.015751][ T5326] [ 82.015758][ T5326] dump_stack_lvl+0xe8/0x150 [ 82.015780][ T5326] print_report+0xba/0x230 [ 82.015795][ T5326] ? ocfs2_fault+0xdb/0x440 [ 82.015814][ T5326] kasan_report+0x117/0x150 [ 82.015829][ T5326] ? ocfs2_fault+0xdb/0x440 [ 82.015848][ T5326] ocfs2_fault+0xdb/0x440 [ 82.015866][ T5326] ? __pfx_ocfs2_fault+0x10/0x10 [ 82.015883][ T5326] ? css_rstat_updated+0x23a/0x530 [ 82.015900][ T5326] __do_fault+0x138/0x390 [ 82.015911][ T5326] do_pte_missing+0x228f/0x3490 [ 82.015924][ T5326] ? handle_mm_fault+0xee/0x3310 [ 82.015940][ T5326] handle_mm_fault+0x1bec/0x3310 [ 82.015957][ T5326] ? handle_mm_fault+0xee/0x3310 [ 82.015973][ T5326] ? __pfx_handle_mm_fault+0x10/0x10 [ 82.015989][ T5326] ? follow_page_pte+0x841/0x1450 [ 82.016008][ T5326] ? __pfx_follow_page_pte+0x10/0x10 [ 82.016026][ T5326] __get_user_pages+0x165b/0x29d0 [ 82.016047][ T5326] populate_vma_page_range+0x2be/0x3c0 [ 82.016062][ T5326] ? __pfx_populate_vma_page_range+0x10/0x10 [ 82.016078][ T5326] ? down_read+0x272/0x2e0 [ 82.016139][ T5326] ? __mm_populate+0x173/0x390 [ 82.016153][ T5326] __mm_populate+0x25f/0x390 [ 82.016168][ T5326] ? __pfx___mm_populate+0x10/0x10 [ 82.016184][ T5326] vm_mmap_pgoff+0x3aa/0x4f0 [ 82.016202][ T5326] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 82.016217][ T5326] ? __fget_files+0x2a/0x420 [ 82.016235][ T5326] ? __fget_files+0x3a0/0x420 [ 82.016249][ T5326] ? __fget_files+0x2a/0x420 [ 82.016266][ T5326] ksys_mmap_pgoff+0x51e/0x760 [ 82.016283][ T5326] do_syscall_64+0x14d/0xf80 [ 82.016296][ T5326] ? trace_irq_disable+0x3b/0x150 [ 82.016314][ T5326] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 82.016326][ T5326] ? clear_bhb_loop+0x40/0x90 [ 82.016339][ T5326] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 82.016351][ T5326] RIP: 0033:0x7f4160d9c799 [ 82.016364][ T5326] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 82.016374][ T5326] RSP: 002b:00007f4161ba5fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 82.016388][ T5326] RAX: ffffffffffffffda RBX: 00007f4161016090 RCX: 00007f4160d9c799 [ 82.016397][ T5326] RDX: 00000000027ffff7 RSI: 0000000000600000 RDI: 0000200000000000 [ 82.016405][ T5326] RBP: 00007f4160e32c99 R08: 0000000000000008 R09: 0000000000000000 [ 82.016412][ T5326] R10: 0000000004012011 R11: 0000000000000246 R12: 0000000000000000 [ 82.016419][ T5326] R13: 00007f4161016128 R14: 00007f4161016090 R15: 00007fffb18d7f48 [ 82.016431][ T5326] [ 82.016435][ T5326] [ 82.148544][ T5326] Allocated by task 5326: [ 82.150306][ T5326] kasan_save_track+0x3e/0x80 [ 82.152703][ T5326] __kasan_slab_alloc+0x6c/0x80 [ 82.155121][ T5326] kmem_cache_alloc_noprof+0x2bc/0x650 [ 82.157594][ T5326] vm_area_alloc+0x24/0x140 [ 82.159670][ T5326] mmap_region+0x10eb/0x2240 [ 82.162259][ T5326] do_mmap+0xc39/0x10c0 [ 82.164721][ T5326] vm_mmap_pgoff+0x2c9/0x4f0 [ 82.168107][ T5326] ksys_mmap_pgoff+0x51e/0x760 [ 82.170926][ T5326] do_syscall_64+0x14d/0xf80 [ 82.173092][ T5326] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 82.175709][ T5326] [ 82.176784][ T5326] Freed by task 72: [ 82.178559][ T5326] kasan_save_track+0x3e/0x80 [ 82.180779][ T5326] kasan_save_free_info+0x46/0x50 [ 82.183085][ T5326] __kasan_slab_free+0x5c/0x80 [ 82.185408][ T5326] slab_free_after_rcu_debug+0x126/0x220 [ 82.188171][ T5326] rcu_core+0x7cd/0x1070 [ 82.190612][ T5326] handle_softirqs+0x22a/0x870 [ 82.192783][ T5326] do_softirq+0x76/0xd0 [ 82.194652][ T5326] __local_bh_enable_ip+0xf8/0x130 [ 82.196990][ T5326] scomp_acomp_comp_decomp+0x73a/0xa00 [ 82.200080][ T5326] crypto_acomp_compress+0x4b3/0xbe0 [ 82.203169][ T5326] zswap_store+0xdce/0x1f80 [ 82.205684][ T5326] swap_writeout+0x70c/0xd70 [ 82.207856][ T5326] shrink_folio_list+0x33fd/0x5290 [ 82.210277][ T5326] evict_folios+0x4795/0x5880 [ 82.212447][ T5326] try_to_shrink_lruvec+0xb62/0xfa0 [ 82.214806][ T5326] shrink_one+0x25c/0x710 [ 82.216747][ T5326] shrink_node+0x3197/0x3a90 [ 82.218997][ T5326] kswapd+0x1742/0x2e10 [ 82.221643][ T5326] kthread+0x388/0x470 [ 82.224147][ T5326] ret_from_fork+0x51e/0xb90 [ 82.226655][ T5326] ret_from_fork_asm+0x1a/0x30 [ 82.228927][ T5326] [ 82.230174][ T5326] Last potentially related work creation: [ 82.232639][ T5326] kasan_save_stack+0x3e/0x60 [ 82.234996][ T5326] kasan_record_aux_stack+0xbd/0xd0 [ 82.237841][ T5326] kmem_cache_free+0x426/0x630 [ 82.240306][ T5326] vms_complete_munmap_vmas+0x929/0xc60 [ 82.243458][ T5326] __mmap_complete+0x7b/0x5e0 [ 82.245526][ T5326] mmap_region+0x15a2/0x2240 [ 82.247493][ T5326] do_mmap+0xc39/0x10c0 [ 82.249371][ T5326] vm_mmap_pgoff+0x2c9/0x4f0 [ 82.251321][ T5326] ksys_mmap_pgoff+0x51e/0x760 [ 82.253429][ T5326] do_syscall_64+0x14d/0xf80 [ 82.255926][ T5326] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 82.259188][ T5326] [ 82.260600][ T5326] The buggy address belongs to the object at ffff888042ba1640 [ 82.260600][ T5326] which belongs to the cache vm_area_struct of size 256 [ 82.267543][ T5326] The buggy address is located 88 bytes inside of [ 82.267543][ T5326] freed 256-byte region [ffff888042ba1640, ffff888042ba1740) [ 82.273483][ T5326] [ 82.274803][ T5326] The buggy address belongs to the physical page: [ 82.278444][ T5326] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x42ba1 [ 82.283213][ T5326] memcg:ffff8880445d5581 [ 82.285213][ T5326] flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) [ 82.288745][ T5326] page_type: f5(slab) [ 82.290750][ T5326] raw: 04fff00000000000 ffff88801c2a0b40 dead000000000100 dead000000000122 [ 82.295477][ T5326] raw: 0000000000000000 00000008000c000c 00000000f5000000 ffff8880445d5581 [ 82.300069][ T5326] page dumped because: kasan: bad access detected [ 82.303340][ T5326] page_owner tracks the page as allocated [ 82.306027][ T5326] page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4703, tgid 4703 (klogd), ts 25477933046, free_ts 25475996613 [ 82.316024][ T5326] post_alloc_hook+0x231/0x280 [ 82.318151][ T5326] get_page_from_freelist+0x24dc/0x2580 [ 82.320847][ T5326] __alloc_frozen_pages_noprof+0x18d/0x380 [ 82.323774][ T5326] allocate_slab+0x77/0x660 [ 82.326260][ T5326] refill_objects+0x331/0x3c0 [ 82.328863][ T5326] __pcs_replace_empty_main+0x2e6/0x730 [ 82.331693][ T5326] kmem_cache_alloc_noprof+0x37d/0x650 [ 82.334249][ T5326] vm_area_alloc+0x24/0x140 [ 82.336762][ T5326] mmap_region+0x10eb/0x2240 [ 82.339532][ T5326] do_mmap+0xc39/0x10c0 [ 82.341574][ T5326] vm_mmap_pgoff+0x2c9/0x4f0 [ 82.343660][ T5326] ksys_mmap_pgoff+0x51e/0x760 [ 82.345905][ T5326] do_syscall_64+0x14d/0xf80 [ 82.348160][ T5326] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 82.351218][ T5326] page last free pid 4703 tgid 4703 stack trace: [ 82.354163][ T5326] __free_frozen_pages+0xc2b/0xdb0 [ 82.356331][ T5326] __slab_free+0x263/0x2b0 [ 82.358396][ T5326] qlist_free_all+0x97/0x100 [ 82.360812][ T5326] kasan_quarantine_reduce+0x148/0x160 [ 82.363965][ T5326] __kasan_slab_alloc+0x22/0x80 [ 82.366982][ T5326] kmem_cache_alloc_noprof+0x2bc/0x650 [ 82.369084][ T5326] __anon_vma_prepare+0xcb/0x4a0 [ 82.371345][ T5326] do_pte_missing+0x2ec4/0x3490 [ 82.373618][ T5326] handle_mm_fault+0x1bec/0x3310 [ 82.375914][ T5326] do_user_addr_fault+0xa73/0x1340 [ 82.378197][ T5326] exc_page_fault+0x6a/0xc0 [ 82.380044][ T5326] asm_exc_page_fault+0x26/0x30 [ 82.382309][ T5326] [ 82.383515][ T5326] Memory state around the buggy address: [ 82.386272][ T5326] ffff888042ba1580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 82.389651][ T5326] ffff888042ba1600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 82.393036][ T5326] >ffff888042ba1680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 82.396529][ T5326] ^ [ 82.398712][ T5326] ffff888042ba1700: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 82.402536][ T5326] ffff888042ba1780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 82.406745][ T5326] ================================================================== [ 82.660650][ T5326] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 82.663956][ T5326] CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 82.669063][ T5326] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 82.673933][ T5326] Call Trace: [ 82.675513][ T5326] [ 82.676877][ T5326] vpanic+0x56c/0xa60 [ 82.678717][ T5326] ? __pfx_vpanic+0x10/0x10 [ 82.680811][ T5326] panic+0xc5/0xd0 [ 82.682613][ T5326] ? __pfx_panic+0x10/0x10 [ 82.684880][ T5326] ? preempt_schedule_thunk+0x16/0x30 [ 82.687899][ T5326] ? ocfs2_fault+0xdb/0x440 [ 82.690190][ T5326] ? preempt_schedule_thunk+0x16/0x30 [ 82.692513][ T5326] ? ocfs2_fault+0xdb/0x440 [ 82.694514][ T5326] check_panic_on_warn+0x89/0xb0 [ 82.696754][ T5326] ? ocfs2_fault+0xdb/0x440 [ 82.698920][ T5326] end_report+0x73/0x180 [ 82.701056][ T5326] ? ocfs2_fault+0xdb/0x440 [ 82.703254][ T5326] kasan_report+0x128/0x150 [ 82.705319][ T5326] ? ocfs2_fault+0xdb/0x440 [ 82.707400][ T5326] ocfs2_fault+0xdb/0x440 [ 82.709322][ T5326] ? __pfx_ocfs2_fault+0x10/0x10 [ 82.711583][ T5326] ? css_rstat_updated+0x23a/0x530 [ 82.713942][ T5326] __do_fault+0x138/0x390 [ 82.716049][ T5326] do_pte_missing+0x228f/0x3490 [ 82.718496][ T5326] ? handle_mm_fault+0xee/0x3310 [ 82.720985][ T5326] handle_mm_fault+0x1bec/0x3310 [ 82.723087][ T5326] ? handle_mm_fault+0xee/0x3310 [ 82.725364][ T5326] ? __pfx_handle_mm_fault+0x10/0x10 [ 82.728227][ T5326] ? follow_page_pte+0x841/0x1450 [ 82.730940][ T5326] ? __pfx_follow_page_pte+0x10/0x10 [ 82.733237][ T5326] __get_user_pages+0x165b/0x29d0 [ 82.735457][ T5326] populate_vma_page_range+0x2be/0x3c0 [ 82.737859][ T5326] ? __pfx_populate_vma_page_range+0x10/0x10 [ 82.741149][ T5326] ? down_read+0x272/0x2e0 [ 82.743835][ T5326] ? __mm_populate+0x173/0x390 [ 82.746261][ T5326] __mm_populate+0x25f/0x390 [ 82.748425][ T5326] ? __pfx___mm_populate+0x10/0x10 [ 82.750722][ T5326] vm_mmap_pgoff+0x3aa/0x4f0 [ 82.752862][ T5326] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 82.755197][ T5326] ? __fget_files+0x2a/0x420 [ 82.757374][ T5326] ? __fget_files+0x3a0/0x420 [ 82.759851][ T5326] ? __fget_files+0x2a/0x420 [ 82.762526][ T5326] ksys_mmap_pgoff+0x51e/0x760 [ 82.765215][ T5326] do_syscall_64+0x14d/0xf80 [ 82.767786][ T5326] ? trace_irq_disable+0x3b/0x150 [ 82.770356][ T5326] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 82.773165][ T5326] ? clear_bhb_loop+0x40/0x90 [ 82.775387][ T5326] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 82.778004][ T5326] RIP: 0033:0x7f4160d9c799 [ 82.780063][ T5326] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 82.788871][ T5326] RSP: 002b:00007f4161ba5fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 82.792918][ T5326] RAX: ffffffffffffffda RBX: 00007f4161016090 RCX: 00007f4160d9c799 [ 82.797355][ T5326] RDX: 00000000027ffff7 RSI: 0000000000600000 RDI: 0000200000000000 [ 82.801461][ T5326] RBP: 00007f4160e32c99 R08: 0000000000000008 R09: 0000000000000000 [ 82.805018][ T5326] R10: 0000000004012011 R11: 0000000000000246 R12: 0000000000000000 [ 82.808584][ T5326] R13: 00007f4161016128 R14: 00007f4161016090 R15: 00007fffb18d7f48 [ 82.812754][ T5326] [ 82.815014][ T5326] Kernel Offset: disabled [ 82.817062][ T5326] Rebooting in 86400 seconds..