F2FS-fs (loop2): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 24 F2FS-fs (loop2): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 24 Bluetooth: hci6: command 0x0406 tx timeout INFO: task kworker/u4:2:32 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:2 D25792 32 2 0x80000000 Workqueue: writeback wb_workfn (flush-7:2) 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/u4:2/32: #0: 00000000c7493f36 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000067b5f3d4 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000a63b0b76 (&type->s_umount_key#77){++++}, at: trylock_super+0x1d/0x100 fs/super.c:412 #3: 0000000014094979 (&sbi->gc_mutex){+.+.}, at: f2fs_balance_fs+0x709/0xd80 fs/f2fs/segment.c:512 1 lock held by khungtaskd/1571: #0: 0000000099aa72ef (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7801: #0: 00000000ccd6c30b (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 3 locks held by syz-executor.2/30218: 2 locks held by syz-executor.3/30995: #0: 00000000a63b0b76 (&type->s_umount_key#77){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 #1: 00000000025fd892 (&bdi->wb_switch_rwsem){+.+.}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: 00000000025fd892 (&bdi->wb_switch_rwsem){+.+.}, at: sync_inodes_sb+0x180/0x9a0 fs/fs-writeback.c:2457 2 locks held by syz-executor.3/32315: #0: 00000000a63b0b76 (&type->s_umount_key#77){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 #1: 00000000025fd892 (&bdi->wb_switch_rwsem){+.+.}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: 00000000025fd892 (&bdi->wb_switch_rwsem){+.+.}, at: sync_inodes_sb+0x180/0x9a0 fs/fs-writeback.c:2457 2 locks held by syz-executor.3/32320: #0: 00000000a63b0b76 (&type->s_umount_key#77){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 #1: 00000000025fd892 (&bdi->wb_switch_rwsem){+.+.}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: 00000000025fd892 (&bdi->wb_switch_rwsem){+.+.}, at: sync_inodes_sb+0x180/0x9a0 fs/fs-writeback.c:2457 2 locks held by syz-executor.3/32321: #0: 00000000a63b0b76 (&type->s_umount_key#77){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 #1: 00000000025fd892 (&bdi->wb_switch_rwsem){+.+.}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: 00000000025fd892 (&bdi->wb_switch_rwsem){+.+.}, at: sync_inodes_sb+0x180/0x9a0 fs/fs-writeback.c:2457 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1571 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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 30218 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:F2FS_STAT fs/f2fs/f2fs.h:3151 [inline] RIP: 0010:gc_data_segment fs/f2fs/gc.c:1031 [inline] RIP: 0010:do_garbage_collect fs/f2fs/gc.c:1109 [inline] RIP: 0010:f2fs_gc+0x18ec/0x8c90 fs/f2fs/gc.c:1196 Code: 00 4d 89 f7 48 89 44 24 08 49 8d 86 98 0f 00 00 48 89 84 24 68 01 00 00 48 c1 e8 03 48 01 e8 48 89 84 24 08 01 00 00 8b 04 24 <83> e8 01 89 44 24 40 e8 58 80 4b fe 48 8b 74 24 08 48 89 f0 48 c1 RSP: 0018:ffff88808f9569e0 EFLAGS: 00000202 RAX: 00000000000000e5 RBX: 0000000000000200 RCX: ffffffff8317101e RDX: 00000000000000e4 RSI: ffff888092b7e280 RDI: 0000000000000004 RBP: dffffc0000000000 R08: ffff8880b03b3d48 R09: 0000000000000200 R10: 0000000000000004 R11: 0000000000000000 R12: 000000000000001c R13: 0000000000000010 R14: 00000000000000e4 R15: ffff888095b24240 FS: 00007fe6ee756700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f34a35a0000 CR3: 000000009d143000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: f2fs_balance_fs+0x71a/0xd80 fs/f2fs/segment.c:513 __write_data_page+0xab8/0x22d0 fs/f2fs/data.c:1975 f2fs_write_cache_pages+0x96e/0x13e0 fs/f2fs/data.c:2107 __f2fs_write_data_pages fs/f2fs/data.c:2217 [inline] f2fs_write_data_pages+0xcc3/0x1060 fs/f2fs/data.c:2244 do_writepages+0xe5/0x290 mm/page-writeback.c:2344 __filemap_fdatawrite_range+0x27d/0x350 mm/filemap.c:446 file_write_and_wait_range+0x93/0x100 mm/filemap.c:776 f2fs_do_sync_file+0x2eb/0x2550 fs/f2fs/file.c:228 f2fs_sync_file+0x136/0x190 fs/f2fs/file.c:334 vfs_fsync_range+0x13a/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2750 [inline] f2fs_file_write_iter+0x64b/0xbe0 fs/f2fs/file.c:3044 call_write_iter include/linux/fs.h:1821 [inline] do_iter_readv_writev+0x668/0x790 fs/read_write.c:681 do_iter_write+0x182/0x5d0 fs/read_write.c:960 vfs_iter_write+0x70/0xa0 fs/read_write.c:973 iter_file_splice_write+0x60d/0xbb0 fs/splice.c:750 do_splice_from fs/splice.c:852 [inline] direct_splice_actor+0x115/0x160 fs/splice.c:1025 splice_direct_to_actor+0x33f/0x8d0 fs/splice.c:980 do_splice_direct+0x1a7/0x270 fs/splice.c:1068 do_sendfile+0x550/0xc30 fs/read_write.c:1447 __do_sys_sendfile64 fs/read_write.c:1508 [inline] __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fe6f01e40c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe6ee756168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fe6f0303f80 RCX: 00007fe6f01e40c9 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000007 RBP: 00007fe6f023fae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd5c377aff R14: 00007fe6ee756300 R15: 0000000000022000