F2FS-fs (loop2): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop2): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop2): Invalid segment count (0) F2FS-fs (loop2): Can't find valid F2FS filesystem in 2th superblock INFO: task init:14392 blocked for more than 140 seconds. Not tainted 4.9.147+ #86 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. init D28872 14392 1 0x00000000 ffff8801a36a5f00 0000000000000000 ffff8801a34e8580 ffff8801a3f5df00 ffff8801db621018 ffff8801a5297570 ffffffff8280a232 ffff8801a36a67b0 000000000000015c 0000000000000000 0000000000000000 ffff8801db6218f0 Call Trace: [] schedule+0x7f/0x1b0 kernel/sched/core.c:3553 [] schedule_timeout+0x735/0xe20 kernel/time/timer.c:1771 [] __down_common kernel/locking/semaphore.c:221 [inline] [] __down+0x191/0x2b0 kernel/locking/semaphore.c:238 [] down+0x5e/0x80 kernel/locking/semaphore.c:61 [] console_lock+0x2c/0x80 kernel/printk/printk.c:2217 [] console_device+0x1c/0xc0 kernel/printk/printk.c:2554 [] tty_lookup_driver drivers/tty/tty_io.c:2008 [inline] [] tty_open_by_driver drivers/tty/tty_io.c:2053 [inline] [] tty_open+0x6f5/0xdf0 drivers/tty/tty_io.c:2130 [] chrdev_open+0x22d/0x5c0 fs/char_dev.c:392 [] do_dentry_open+0x3ef/0xc90 fs/open.c:766 [] vfs_open+0x11c/0x210 fs/open.c:879 [] do_last fs/namei.c:3457 [inline] [] path_openat+0x661/0x2d90 fs/namei.c:3581 [] do_filp_open+0x197/0x270 fs/namei.c:3615 [] do_sys_open+0x30d/0x5c0 fs/open.c:1072 [] SYSC_open fs/open.c:1090 [inline] [] SyS_open+0x2d/0x40 fs/open.c:1085 [] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Showing all locks held in the system: 2 locks held by khungtaskd/24: #0: (rcu_read_lock){......}, at: [] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline] #0: (rcu_read_lock){......}, at: [] watchdog+0x11c/0xa20 kernel/hung_task.c:239 #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336 1 lock held by rsyslogd/1895: #0: (&f->f_pos_lock){+.+.+.}, at: [] __fdget_pos+0xac/0xd0 fs/file.c:781 2 locks held by getty/2022: #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367 #1: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x202/0x1830 drivers/tty/n_tty.c:2156 1 lock held by syz-executor5/16771: #0: (&sig->cred_guard_mutex){+.+.+.}, at: [] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369 1 lock held by syz-executor5/17238: #0: (&sig->cred_guard_mutex){+.+.+.}, at: [] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369 1 lock held by syz-executor2/17510: #0: (&sig->cred_guard_mutex){+.+.+.}, at: [] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369 1 lock held by syz-executor2/17825: #0: (&sig->cred_guard_mutex){+.+.+.}, at: [] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369 1 lock held by init/14392: #0: (tty_mutex){+.+.+.}, at: [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 1 lock held by init/14396: #0: (tty_mutex){+.+.+.}, at: [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 1 lock held by init/14399: #0: (tty_mutex){+.+.+.}, at: [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 1 lock held by init/14400: #0: (tty_mutex){+.+.+.}, at: [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 1 lock held by init/14435: #0: (tty_mutex){+.+.+.}, at: [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 1 lock held by init/15019: #0: (tty_mutex){+.+.+.}, at: [] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline] #0: (tty_mutex){+.+.+.}, at: [] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130 1 lock held by syz-executor0/11205: #0: (tty_mutex){+.+.+.}, at: [] ptmx_open+0xf7/0x310 drivers/tty/pty.c:753 1 lock held by syz-executor0/11216: #0: (tty_mutex){+.+.+.}, at: [] ptmx_open+0xf7/0x310 drivers/tty/pty.c:753 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.147+ #86 ffff8801d9907d08 ffffffff81b43be9 0000000000000000 0000000000000001 0000000000000001 0000000000000001 ffffffff81098440 ffff8801d9907d40 ffffffff81b4ecf9 0000000000000001 0000000000000000 0000000000000003 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99 [] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60 [] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [] check_hung_task kernel/hung_task.c:125 [inline] [] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline] [] watchdog+0x6ad/0xa20 kernel/hung_task.c:239 [] kthread+0x26d/0x300 kernel/kthread.c:211 [] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 13088 Comm: syz-executor0 Not tainted 4.9.147+ #86 task: ffff8801a324c740 task.stack: ffff8801c54a8000 RIP: 0010:[] c [] io_serial_in+0x6b/0x90 drivers/tty/serial/8250/8250_port.c:414 RSP: 0018:ffff8801c54af508 EFLAGS: 00000002 RAX: dffffc0000000000 RBX: 00000000000003fd RCX: 0000000000000000 RDX: 00000000000003fd RSI: ffffffff81d634d1 RDI: ffffffff84b61b98 RBP: ffff8801c54af518 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff84b61b60 R13: 0000000000000020 R14: fffffbfff096c3b3 R15: fffffbfff096c375 FS: 00007f9c5e7a5700(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001a570b8 CR3: 00000001d4ac7000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff84b61b60c 000000000000270dc ffff8801c54af568c ffffffff81d65744c ffffffff81b6db48c ffffffff84b61ba8c ffffffff84b61d9ac ffffffff84b61b60c 0000000000000032c ffffffff81d65890c dffffc0000000000c 0000000000000032c Call Trace: [] serial_in drivers/tty/serial/8250/8250.h:111 [inline] [] wait_for_xmitr+0x94/0x1e0 drivers/tty/serial/8250/8250_port.c:1997 [] serial8250_console_putchar+0x1f/0x60 drivers/tty/serial/8250/8250_port.c:3103 [] uart_console_write+0x59/0xf0 drivers/tty/serial/serial_core.c:1866 [] serial8250_console_write+0x528/0x820 drivers/tty/serial/8250/8250_port.c:3169 [] univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:594 [] call_console_drivers.isra.0.constprop.15+0x1ad/0x360 kernel/printk/printk.c:1594 [] console_unlock+0x47f/0xb50 kernel/printk/printk.c:2454 [] vprintk_emit+0x448/0x790 kernel/printk/printk.c:1908 [] vprintk+0x28/0x30 kernel/printk/printk.c:1918 [] vprintk_default+0x1d/0x30 kernel/printk/printk.c:1919 [] vprintk_func kernel/printk/internal.h:36 [inline] [] printk+0xaf/0xd7 kernel/printk/printk.c:1980 [] f2fs_msg+0xdc/0x110 fs/f2fs/super.c:210 [] sanity_check_raw_super fs/f2fs/super.c:2417 [inline] [] read_raw_super_block fs/f2fs/super.c:2839 [inline] [] f2fs_fill_super.cold.17+0x5c0/0xbb4 fs/f2fs/super.c:3062 [] mount_bdev+0x2be/0x380 fs/super.c:1100 [] f2fs_mount+0x34/0x40 fs/f2fs/super.c:3460 [] mount_fs+0x28c/0x370 fs/super.c:1206 [] vfs_kern_mount.part.8+0xd1/0x4b0 fs/namespace.c:1000 [] vfs_kern_mount fs/namespace.c:982 [inline] [] do_new_mount fs/namespace.c:2549 [inline] [] do_mount+0x3c9/0x28a0 fs/namespace.c:2871 [] SYSC_mount fs/namespace.c:3087 [inline] [] SyS_mount+0xea/0x100 fs/namespace.c:3064 [] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: c24 cc9 c00 c00 c00 c49 c8d c7c c24 c38 c48 cb8 c00 c00 c00 c00 c00 cfc cff cdf c48 c89 cfa c48 cc1 cea c03 cd3 ce3 c80 c3c c02 c00 c75 c17 c41 c03 c5c c24 c38 c89 cda cec c<5b> c0f cb6 cc0 c41 c5c c5d cc3 ce8 ce8 cfd c78 cff ceb cc2 ce8 c41 cfe c78 cff ceb c