F2FS-fs (loop5): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 24 F2FS-fs (loop5): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 24 F2FS-fs (loop5): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 24 F2FS-fs (loop5): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 24 INFO: task kworker/u4:4:2865 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 F2FS-fs (loop5): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 24 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. F2FS-fs (loop5): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 24 kworker/u4:4 D25536 2865 2 0x80000000 Workqueue: writeback wb_workfn (flush-7:5) Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 f2fs_balance_fs+0x709/0xd80 fs/f2fs/segment.c:512 f2fs_write_inode+0x500/0x600 fs/f2fs/inode.c:630 write_inode fs/fs-writeback.c:1244 [inline] __writeback_single_inode+0x733/0x11d0 fs/fs-writeback.c:1442 writeback_sb_inodes+0x537/0xef0 fs/fs-writeback.c:1647 __writeback_inodes_wb+0xc6/0x280 fs/fs-writeback.c:1716 wb_writeback+0x841/0xcc0 fs/fs-writeback.c:1822 wb_check_old_data_flush fs/fs-writeback.c:1924 [inline] wb_do_writeback fs/fs-writeback.c:1977 [inline] wb_workfn+0x8ba/0x1250 fs/fs-writeback.c:2006 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Showing all locks held in the system: 4 locks held by kworker/u4:1/23: #0: 00000000ab07080a ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000b600e19d (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 0000000031bfcee3 (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521 #3: 000000002e0dfd0e (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #3: 000000002e0dfd0e (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 1 lock held by khungtaskd/1565: #0: 00000000231c95c2 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 4 locks held by kworker/u4:4/2865: #0: 000000005ba91256 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000006eea04fd ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000efa5eb64 (&type->s_umount_key#50){++++}, at: trylock_super+0x1d/0x100 fs/super.c:412 #3: 0000000013682726 (&sbi->gc_mutex){+.+.}, at: f2fs_balance_fs+0x709/0xd80 fs/f2fs/segment.c:512 1 lock held by in:imklog/7815: #0: 00000000907f44ed (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 3 locks held by kworker/u4:8/9528: 2 locks held by kworker/1:1/18581: #0: 000000005ed5e57a ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000c4cd4b81 ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 2 locks held by syz-executor.5/5629: 2 locks held by syz-executor.0/13892: #0: 00000000ecc9abc8 (&bdev->bd_mutex){+.+.}, at: __blkdev_put+0xfc/0x870 fs/block_dev.c:1806 #1: 00000000231c95c2 (rcu_read_lock){....}, at: trace_sched_stat_runtime include/trace/events/sched.h:428 [inline] #1: 00000000231c95c2 (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 kernel/sched/fair.c:857 2 locks held by syz-executor.5/13911: 2 locks held by systemd-udevd/13925: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1565 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 18581 Comm: kworker/1:1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Workqueue: events_power_efficient neigh_periodic_work RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:152 [inline] RIP: 0010:unwind_next_frame+0x317/0x1400 arch/x86/kernel/unwind_orc.c:422 Code: 48 8d 3c 40 4c 8d 8c 3f 30 ce 8c 8b 83 c2 01 49 81 f9 ba 91 17 8c 0f 83 cc 0a 00 00 89 d7 48 8d 3c 7f 48 8d bc 3f 30 ce 8c 8b <48> 81 ff ba 91 17 8c 0f 87 b1 0a 00 00 48 8d 3c 85 d4 4b 30 8b 29 RSP: 0018:ffff8880b0caf738 EFLAGS: 00000093 RAX: 0000000000120736 RBX: 1ffff11016195ef0 RCX: 0000000000120736 RDX: 0000000000120737 RSI: 000000000005a096 RDI: ffffffff8bf8f97a RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8bf8f974 R10: ffff8880b0caf8c7 R11: 0000000000074071 R12: ffff8880b0caf8b0 R13: ffff8880b0caf89d R14: ffff8880b0caf868 R15: ffffffff86a0967e FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557567dba160 CR3: 00000000ab28a000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x126/0x1f0 mm/kasan/kasan.c:521 __cache_free mm/slab.c:3503 [inline] kmem_cache_free+0x7f/0x260 mm/slab.c:3765 kfree_skbmem+0xc1/0x140 net/core/skbuff.c:595 __kfree_skb net/core/skbuff.c:655 [inline] consume_skb+0x120/0x3d0 net/core/skbuff.c:714 netlink_broadcast_filtered+0x31f/0xbc0 net/netlink/af_netlink.c:1527 netlink_broadcast net/netlink/af_netlink.c:1549 [inline] nlmsg_multicast include/net/netlink.h:591 [inline] nlmsg_notify+0x15e/0x1f0 net/netlink/af_netlink.c:2506 __neigh_notify+0xdc/0x160 net/core/neighbour.c:2926 neigh_cleanup_and_release+0x71/0xd0 net/core/neighbour.c:106 neigh_periodic_work+0x703/0xa30 net/core/neighbour.c:846 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415