IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready Bluetooth: hci9 command 0x0419 tx timeout Bluetooth: hci11 command 0x0419 tx timeout Bluetooth: hci10 command 0x0419 tx timeout INFO: task syz-executor.0:10141 blocked for more than 140 seconds. Not tainted 4.14.294-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29768 10141 9896 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x343/0x6d0 kernel/locking/rwsem-xadd.c:617 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105 __down_write arch/x86/include/asm/rwsem.h:126 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:56 grab_super+0x55/0x140 fs/super.c:373 sget_userns+0x2b1/0xc10 fs/super.c:504 sget+0xd1/0x110 fs/super.c:572 mount_bdev+0xcd/0x360 fs/super.c:1107 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+0x46/0xbb RIP: 0033:0x7f77171d45a9 RSP: 002b:00007f7715b48168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f77172f5f80 RCX: 00007f77171d45a9 RDX: 0000000020000040 RSI: 0000000020000280 RDI: 00000000200004c0 RBP: 00007f771722f560 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff6bf464ef R14: 00007f7715b48300 R15: 0000000000022000 INFO: task syz-executor.0:10143 blocked for more than 140 seconds. Not tainted 4.14.294-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D30112 10143 9896 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x1e6/0x350 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:66 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 __get_super.part.0+0x271/0x390 fs/super.c:678 __get_super include/linux/spinlock.h:317 [inline] __get_super_thawed+0x13b/0x380 fs/super.c:715 quotactl_block fs/quota/quota.c:820 [inline] SYSC_quotactl fs/quota/quota.c:874 [inline] SyS_quotactl+0x167/0x10a0 fs/quota/quota.c:839 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f77171d45a9 RSP: 002b:00007f7715b27168 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f77172f6050 RCX: 00007f77171d45a9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 00007f771722f560 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff6bf464ef R14: 00007f7715b27300 R15: 0000000000022000 INFO: task syz-executor.2:10642 blocked for more than 140 seconds. Not tainted 4.14.294-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28160 10642 8007 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x1e6/0x350 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:66 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 iterate_supers+0xda/0x490 fs/super.c:611 sys_sync+0x78/0x130 fs/sync.c:113 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f2f6394d5a9 RSP: 002b:00007f2f622c1168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007f2f63a6ef80 RCX: 00007f2f6394d5a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f2f639a8560 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc1ec5a6ef R14: 00007f2f622c1300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1534: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 2 locks held by syz-executor.0/10141: #0: (&bdev->bd_fsfreeze_mutex){+.+.}, at: [] mount_bdev+0x71/0x360 fs/super.c:1101 #1: (&type->s_umount_key#49){++++}, at: [] grab_super+0x55/0x140 fs/super.c:373 1 lock held by syz-executor.0/10143: #0: (&type->s_umount_key#49){++++}, at: [] __get_super.part.0+0x271/0x390 fs/super.c:678 1 lock held by syz-executor.2/10642: #0: (&type->s_umount_key#49){++++}, at: [] iterate_supers+0xda/0x490 fs/super.c:611 1 lock held by syz-executor.1/10706: #0: (&type->s_umount_key#49){++++}, at: [] iterate_supers+0xda/0x490 fs/super.c:611 1 lock held by syz-executor.5/10720: #0: (&type->s_umount_key#49){++++}, at: [] iterate_supers+0xda/0x490 fs/super.c:611 1 lock held by syz-executor.2/10986: #0: (&type->s_umount_key#49){++++}, at: [] iterate_supers+0xda/0x490 fs/super.c:611 1 lock held by syz-executor.2/11735: #0: (&type->s_umount_key#49){++++}, at: [] iterate_supers+0xda/0x490 fs/super.c:611 1 lock held by syz-executor.5/11782: #0: (&type->s_umount_key#49){++++}, at: [] iterate_supers+0xda/0x490 fs/super.c:611 1 lock held by syz-executor.1/11786: #0: (&type->s_umount_key#49){++++}, at: [] iterate_supers+0xda/0x490 fs/super.c:611 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1534 Comm: khungtaskd Not tainted 4.14.294-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 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:404 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 9780 Comm: syz-executor.0 Not tainted 4.14.294-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 task: ffff88808ff465c0 task.stack: ffff88809f4b0000 RIP: 0010:__read_once_size include/linux/compiler.h:185 [inline] RIP: 0010:radix_tree_deref_slot include/linux/radix-tree.h:238 [inline] RIP: 0010:find_get_entry+0xa8/0x630 mm/filemap.c:1357 RSP: 0018:ffff88809f4b76f0 EFLAGS: 00000246 RAX: 1ffff1100b046abd RBX: ffff8880902bab68 RCX: ffffc90005fe0000 RDX: 0000000000040000 RSI: ffffffff816848dc RDI: ffff8880902bab70 RBP: 0000000001420848 R08: 0000000000000000 R09: 0000000000020011 R10: ffff88808ff46e70 R11: ffff88808ff465c0 R12: ffff8880582355e8 R13: ffff8880902bab68 R14: dffffc0000000000 R15: 0000000000000040 FS: 00007ffa7d7d7700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f82ed1ee010 CR3: 00000000abd05000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pagecache_get_page+0x53/0xab0 mm/filemap.c:1465 find_or_create_page include/linux/pagemap.h:326 [inline] grow_dev_page fs/buffer.c:1004 [inline] grow_buffers fs/buffer.c:1077 [inline] __getblk_slow+0x1dd/0x7a0 fs/buffer.c:1104 __getblk_gfp fs/buffer.c:1383 [inline] __bread_gfp+0x206/0x2e0 fs/buffer.c:1428 sb_bread include/linux/buffer_head.h:343 [inline] udf_tread+0xe1/0x130 fs/udf/misc.c:44 udf_read_tagged+0x40/0x4c0 fs/udf/misc.c:219 udf_check_anchor_block+0x18a/0x590 fs/udf/super.c:1823 udf_scan_anchors+0x3b9/0x530 fs/udf/super.c:1902 udf_find_anchor fs/udf/super.c:1920 [inline] udf_load_vrs+0x5a1/0xa90 fs/udf/super.c:1985 udf_fill_super+0x715/0x1660 fs/udf/super.c:2177 mount_bdev+0x2b3/0x360 fs/super.c:1134 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+0x46/0xbb RIP: 0033:0x7ffa7ee845a9 RSP: 002b:00007ffa7d7d7168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffa7efa6050 RCX: 00007ffa7ee845a9 RDX: 0000000020000040 RSI: 0000000020000280 RDI: 00000000200004c0 RBP: 00007ffa7eedf560 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff1255042f R14: 00007ffa7d7d7300 R15: 0000000000022000 Code: 48 8b 74 24 08 48 8b 3c 24 e8 45 8b 96 05 48 85 c0 49 89 c4 0f 84 fa 02 00 00 e8 e4 fe ec ff 4c 89 e0 48 c1 e8 03 42 80 3c 30 00 <0f> 85 cc 04 00 00 49 8b 1c 24 48 89 5c 24 10 e8 94 d8 dd ff 85