batman_adv: batadv0: Interface activated: batadv_slave_1 IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready Bluetooth: hci7 command 0x041b tx timeout INFO: task kworker/u4:6:9359 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:6 D28192 9359 2 0x80000000 Workqueue: writeback wb_workfn (flush-7:5) Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 queue_log_writer+0x237/0x290 fs/reiserfs/journal.c:2987 check_journal_end fs/reiserfs/journal.c:3684 [inline] do_journal_end+0x7c9/0x4310 fs/reiserfs/journal.c:4051 reiserfs_write_inode+0x204/0x250 fs/reiserfs/inode.c:1788 write_inode fs/fs-writeback.c:1241 [inline] __writeback_single_inode+0x6a4/0x1010 fs/fs-writeback.c:1439 writeback_sb_inodes+0x48b/0xd30 fs/fs-writeback.c:1645 wb_writeback+0x243/0xb80 fs/fs-writeback.c:1820 wb_do_writeback fs/fs-writeback.c:1952 [inline] wb_workfn+0x2bd/0xf50 fs/fs-writeback.c:1988 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 INFO: task syz-executor.5:9401 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D25560 9401 8008 0x00000006 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 bit_wait+0x12/0x90 kernel/sched/wait_bit.c:240 __wait_on_bit+0x86/0x150 kernel/sched/wait_bit.c:51 __inode_wait_for_writeback+0x123/0x190 fs/fs-writeback.c:1262 inode_wait_for_writeback+0x22/0x30 fs/fs-writeback.c:1274 evict+0x292/0x700 fs/inode.c:551 iput_final fs/inode.c:1523 [inline] iput+0x458/0x7e0 fs/inode.c:1550 dentry_unlink_inode+0x25c/0x310 fs/dcache.c:387 d_delete+0x1c5/0x280 fs/dcache.c:2417 xattr_unlink+0x114/0x160 fs/reiserfs/xattr.c:96 lookup_and_delete_xattr fs/reiserfs/xattr.c:492 [inline] reiserfs_xattr_set_handle+0x6d2/0x980 fs/reiserfs/xattr.c:527 reiserfs_xattr_set+0x387/0x4d0 fs/reiserfs/xattr.c:631 trusted_set+0x86/0xb0 fs/reiserfs/xattr_trusted.c:30 __vfs_removexattr+0xcf/0x120 fs/xattr.c:416 __vfs_removexattr_locked+0x12e/0x2f0 fs/xattr.c:448 vfs_removexattr+0xb1/0x210 fs/xattr.c:469 ovl_fill_super+0x1170/0x2610 fs/overlayfs/super.c:1029 mount_nodev+0x4c/0xf0 fs/super.c:1180 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f6c495a60c9 RSP: 002b:00007f6c47b18168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f6c496c5f80 RCX: 00007f6c495a60c9 RDX: 0000000020000080 RSI: 00000000200000c0 RDI: 0000000000000000 RBP: 00007f6c49601ae9 R08: 0000000020000480 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcbdc489ff R14: 00007f6c47b18300 R15: 0000000000022000 INFO: task syz-executor.5:9413 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28056 9413 8008 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 wb_wait_for_completion fs/fs-writeback.c:222 [inline] wb_wait_for_completion+0x118/0x170 fs/fs-writeback.c:218 sync_inodes_sb+0x173/0x880 fs/fs-writeback.c:2447 __sync_filesystem fs/sync.c:34 [inline] sync_filesystem fs/sync.c:67 [inline] sync_filesystem+0x12f/0x230 fs/sync.c:48 reiserfs_remount+0x10f/0x1320 fs/reiserfs/super.c:1453 do_remount_sb+0x150/0x530 fs/super.c:868 do_remount fs/namespace.c:2393 [inline] do_mount+0x15f3/0x2a30 fs/namespace.c:2896 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f6c495a75fa RSP: 002b:00007f6c3faf6f88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6c495a75fa RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 0000000000000000 RBP: 00007f6c3faf7020 R08: 00007f6c3faf7020 R09: 0000000001a484bc R10: 0000000001a484bc R11: 0000000000000206 R12: 00000000200000c0 R13: 0000000020000100 R14: 00007f6c3faf6fe0 R15: 00000000200009c0 Showing all locks held in the system: 1 lock held by khungtaskd/1533: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 2 locks held by kworker/u4:6/9359: #0: ("writeback"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2088 #1: ((&(&wb->dwork)->work)){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2092 3 locks held by syz-executor.5/9401: #0: (&type->s_umount_key#47/1){+.+.}, at: [] alloc_super fs/super.c:251 [inline] #0: (&type->s_umount_key#47/1){+.+.}, at: [] sget_userns+0x556/0xc10 fs/super.c:516 #1: (&type->i_mutex_dir_key#8){++++}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&type->i_mutex_dir_key#8){++++}, at: [] vfs_removexattr+0xa2/0x210 fs/xattr.c:468 #2: (&type->i_mutex_dir_key#8/3){+.+.}, at: [] inode_lock_nested include/linux/fs.h:754 [inline] #2: (&type->i_mutex_dir_key#8/3){+.+.}, at: [] lookup_and_delete_xattr fs/reiserfs/xattr.c:484 [inline] #2: (&type->i_mutex_dir_key#8/3){+.+.}, at: [] reiserfs_xattr_set_handle+0x652/0x980 fs/reiserfs/xattr.c:527 2 locks held by syz-executor.5/9413: #0: (&type->s_umount_key#48){++++}, at: [] do_remount fs/namespace.c:2387 [inline] #0: (&type->s_umount_key#48){++++}, at: [] do_mount+0x837/0x2a30 fs/namespace.c:2896 #1: (&bdi->wb_switch_rwsem){+.+.}, at: [] bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: (&bdi->wb_switch_rwsem){+.+.}, at: [] sync_inodes_sb+0x156/0x880 fs/fs-writeback.c:2445 2 locks held by syz-executor.1/11894: #0: (sb_writers#4){.+.+}, at: [] file_start_write include/linux/fs.h:2714 [inline] #0: (sb_writers#4){.+.+}, at: [] do_sendfile+0x84f/0xb30 fs/read_write.c:1440 #1: (&type->s_umount_key#48){++++}, at: [] iterate_supers+0xda/0x490 fs/super.c:611 2 locks held by syz-executor.1/12266: #0: (sb_writers#4){.+.+}, at: [] file_start_write include/linux/fs.h:2714 [inline] #0: (sb_writers#4){.+.+}, at: [] do_sendfile+0x84f/0xb30 fs/read_write.c:1440 #1: (&type->s_umount_key#48){++++}, at: [] iterate_supers+0xda/0x490 fs/super.c:611 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5b9/0xb40 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4625 Comm: systemd-journal Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 task: ffff8880a1262180 task.stack: ffff8880a1268000 RIP: 0010:__sanitizer_cov_trace_pc+0x23/0x50 kernel/kcov.c:68 RSP: 0018:ffff8880a126fa20 EFLAGS: 00000246 RAX: ffff8880a1262180 RBX: 0000000000000000 RCX: 1ffffffff11999ac RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88e0dba8 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000020011 R10: ffff8880a1262a08 R11: ffff8880a1262180 R12: dffffc0000000000 R13: 0000000000000000 R14: 00007fa7b4ad99c7 R15: 0000000000001000 FS: 00007fa7b581e8c0(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa7aeec2000 CR3: 00000000a12cf000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: read_seqcount_retry include/linux/seqlock.h:220 [inline] latch_tree_find include/linux/rbtree_latch.h:208 [inline] bpf_prog_kallsyms_find.part.0+0x11d/0x240 kernel/bpf/core.c:468 bpf_prog_kallsyms_find include/linux/rcupdate.h:630 [inline] is_bpf_text_address+0x13b/0x150 kernel/bpf/core.c:503 kernel_text_address kernel/extable.c:150 [inline] kernel_text_address+0xbd/0xf0 kernel/extable.c:120 __kernel_text_address+0x9/0x30 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:252 [inline] unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:247 __save_stack_trace+0xa0/0x160 arch/x86/kernel/stacktrace.c:45 save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 kmem_cache_alloc+0x124/0x3c0 mm/slab.c:3552 getname_flags+0xc8/0x550 fs/namei.c:138 user_path_at_empty+0x2a/0x50 fs/namei.c:2631 user_path_at include/linux/namei.h:57 [inline] SYSC_faccessat fs/open.c:403 [inline] SyS_faccessat+0x21b/0x680 fs/open.c:353 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fa7b4ad99c7 RSP: 002b:00007fff7e049278 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00007fff7e04c2a0 RCX: 00007fa7b4ad99c7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00005580f811d9a3 RBP: 00007fff7e0493c0 R08: 00005580f81133e5 R09: 0000000000000018 R10: 0000000000000030 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00005580f982b8a0 R15: 00007fff7e0498b0 Code: 90 90 90 90 90 90 90 90 65 48 8b 04 25 c0 7f 02 00 48 85 c0 74 1a 65 8b 15 8b 28 ad 7e 81 e2 00 01 1f 00 75 0b 8b 90 58 13 00 00 <83> fa 01 74 01 c3 48 8b 34 24 48 8b 88 60 13 00 00 8b 80 5c 13