UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) device batadv0 entered promiscuous mode Y4`Ҙ: Cannot use loopback or non-ethernet device as HSR slave. UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) INFO: task syz-executor.2:16885 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 UDF-fs: error (device loop0): udf_read_inode: (ino 1409) failed !bh "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. UDF-fs: error (device loop3): udf_read_inode: (ino 1409) failed !bh syz-executor.2 D29296 16885 8147 0x00000004 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 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 __get_super.part.0+0x209/0x2e0 fs/super.c:698 __get_super include/linux/spinlock.h:329 [inline] get_super+0x2b/0x50 fs/super.c:727 fsync_bdev+0x14/0xc0 fs/block_dev.c:483 blkdev_flushbuf block/ioctl.c:436 [inline] blkdev_ioctl+0x912/0x1a80 block/ioctl.c:521 block_ioctl+0xe9/0x130 fs/block_dev.c:1906 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f9b7d8ab279 Code: Bad RIP value. RSP: 002b:00007f9b7c1ff168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9b7d9be050 RCX: 00007f9b7d8ab279 RDX: 0000000000000000 RSI: 0000000000001261 RDI: 0000000000000003 RBP: 00007f9b7d905189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffda1569ddf R14: 00007f9b7c1ff300 R15: 0000000000022000 device batadv0 left promiscuous mode Showing all locks held in the system: 1 lock held by khungtaskd/1572: #0: 000000008e0908af (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7811: UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) #0: 00000000a005b7b4 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) UDF-fs: error (device loop0): udf_read_inode: (ino 1409) failed !bh 2 locks held by kworker/0:3/7819: #0: 00000000079e70f5 ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000001285cbc0 ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 2 locks held by agetty/8042: #0: 00000000e5d959c3 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 UDF-fs: error (device loop3): udf_read_inode: (ino 1409) failed !bh #1: 00000000e4ae404b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 3 locks held by kworker/u4:8/10118: 1 lock held by syz-executor.0/15988: #0: 0000000058a3b2f8 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #0: 0000000058a3b2f8 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x256/0x6f0 kernel/rcu/tree_exp.h:667 1 lock held by syz-executor.2/16874: 1 lock held by syz-executor.2/16885: #0: 00000000fbe864db (&type->s_umount_key#76){++++}, at: __get_super.part.0+0x209/0x2e0 fs/super.c:698 2 locks held by syz-executor.2/17249: #0: 000000005842a117 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 #1: 00000000fbe864db (&type->s_umount_key#76){++++}, at: grab_super+0xa2/0x350 fs/super.c:383 1 lock held by syz-executor.2/17250: #0: 00000000fbe864db (&type->s_umount_key#76){++++}, at: __get_super.part.0+0x209/0x2e0 fs/super.c:698 2 locks held by syz-executor.2/19530: #0: 00000000432a2f1b (rtnl_mutex){+.+.}, at: tun_detach drivers/net/tun.c:759 [inline] #0: 00000000432a2f1b (rtnl_mutex){+.+.}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3323 #1: 0000000058a3b2f8 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #1: 0000000058a3b2f8 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 2 locks held by syz-executor.2/19548: #0: 00000000fbe7a80f (br_ioctl_mutex){+.+.}, at: sock_ioctl+0x29e/0x5d0 net/socket.c:1100 #1: 00000000432a2f1b (rtnl_mutex){+.+.}, at: br_del_bridge+0x14/0x110 net/bridge/br_if.c:472 1 lock held by syz-executor.4/19543: #0: 00000000432a2f1b (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000432a2f1b (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 1 lock held by cron/19554: ============================================= device batadv0 entered promiscuous mode NMI backtrace for cpu 0 CPU: 0 PID: 1572 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 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: 17321 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:update_load_avg kernel/sched/fair.c:3609 [inline] RIP: 0010:set_next_entity+0x362/0x1dc0 kernel/sched/fair.c:4146 Code: 00 0f 85 d3 13 00 00 4c 2b ad b8 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be 80 01 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 88 13 00 00 49 83 be 80 01 00 00 00 74 3d 49 8d bf c8 0a 00 RSP: 0018:ffff88805f9df9f0 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffffffff8a45f160 RCX: ffff88805f45e2c0 RDX: 1ffff110126d0880 RSI: 00000000ffffffff RDI: ffff888093684400 RBP: ffff8880ba12b180 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880936842c0 R13: 0000006ef042b4bd R14: ffff888093684280 R15: ffff8880ba12b0c0 FS: 00005555571ce400(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3b0c80d000 CR3: 00000000643ac000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pick_next_task_fair+0xc85/0x1570 kernel/sched/fair.c:6808 pick_next_task kernel/sched/core.c:3363 [inline] __schedule+0x457/0x2040 kernel/sched/core.c:3491 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x264/0x6c0 kernel/time/hrtimer.c:1755 hrtimer_nanosleep+0x24d/0x570 kernel/time/hrtimer.c:1809 common_nsleep+0x23/0x30 kernel/time/posix-timers.c:1204 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1231 [inline] __se_sys_clock_nanosleep+0x261/0x360 kernel/time/posix-timers.c:1209 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f7bd2962fa1 Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 aa e7 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 e3 e7 ff ff 48 8b 04 24 eb 97 66 2e 0f 1f RSP: 002b:00007ffe8b0c1e00 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 00000000000000bb RCX: 00007f7bd2962fa1 RDX: 00007ffe8b0c1e40 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffe8b0c1ecc R08: 0000000000000000 R09: 000000868c2d95c1 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 000000000007f634 R14: 0000000000000012 R15: 00007ffe8b0c1f30 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000)