binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29201 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29201 binder: send failed reply for transaction 4388, target dead INFO: task syz-executor4:25236 blocked for more than 140 seconds. Not tainted 5.0.0-rc1+ #23 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D26216 25236 19832 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x9b/0x120 kernel/locking/rwsem.c:26 __get_super.part.0+0x203/0x2e0 fs/super.c:699 __get_super include/linux/spinlock.h:329 [inline] __get_super_thawed+0x153/0x310 fs/super.c:736 get_super_thawed+0x18/0x20 fs/super.c:760 quotactl_block fs/quota/quota.c:818 [inline] kernel_quotactl+0x200/0x1810 fs/quota/quota.c:872 __do_sys_quotactl fs/quota/quota.c:893 [inline] __se_sys_quotactl fs/quota/quota.c:890 [inline] __x64_sys_quotactl+0x97/0xf0 fs/quota/quota.c:890 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 Code: Bad RIP value. RSP: 002b:00007f45f44ccc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457ec9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000000 RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f45f44cd6d4 R13: 00000000004c4973 R14: 00000000004d7f48 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1040: #0: 00000000d9a43032 (rcu_read_lock){....}, at: debug_show_all_locks+0xc6/0x41d kernel/locking/lockdep.c:4389 1 lock held by rsyslogd/7575: #0: 00000000850ae498 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1b3/0x1f0 fs/file.c:795 2 locks held by getty/7686: #0: 000000008d021c42 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000a8530fb8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7687: #0: 00000000b5a2f243 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000c9eff718 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7688: #0: 00000000ee73e1ec (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000060d34c3e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7689: #0: 00000000f61bfdd4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000015fee76c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7690: #0: 000000006325cecf (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000052ca2217 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7691: #0: 000000001f4d6abf (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000005c926b44 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7692: #0: 00000000a197b05b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000103d3b2a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 1 lock held by syz-executor4/25218: 1 lock held by syz-executor4/25236: #0: 00000000ea5aaefc (&type->s_umount_key#86){++++}, at: __get_super.part.0+0x203/0x2e0 fs/super.c:699 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1040 Comm: khungtaskd Not tainted 5.0.0-rc1+ #23 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1db/0x2d0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0xbbb/0x1170 kernel/hung_task.c:287 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.036 msecs NMI backtrace for cpu 0 CPU: 0 PID: 25218 Comm: syz-executor4 Not tainted 5.0.0-rc1+ #23 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__sanitizer_cov_trace_pc+0x4b/0x50 kernel/kcov.c:111 Code: 90 d8 12 00 00 83 fa 02 75 20 48 8b 88 e0 12 00 00 8b 80 dc 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 <5d> c3 0f 1f 00 65 4c 8b 04 25 40 ee 01 00 65 8b 05 10 f6 7f 7e a9 RSP: 0018:ffff888098cfed48 EFLAGS: 00000246 RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc9000e347000 RDX: 0000000000040000 RSI: ffffffff8390e103 RDI: 0000000000000005 RBP: ffff888098cfed48 R08: ffff888093968500 R09: ffffed1015cc5b90 R10: ffffed1015cc5b8f R11: ffff8880ae62dc7b R12: ffffffff8881b020 R13: 0000000000000000 R14: ffffffff8881afe0 R15: ffff888098cfeef8 FS: 00007f45f450f700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000000a467e000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: check_preemption_disabled+0x43/0x290 lib/smp_processor_id.c:15 debug_smp_processor_id+0x1c/0x20 lib/smp_processor_id.c:56 rcu_lockdep_current_cpu_online kernel/rcu/tree.c:980 [inline] rcu_lockdep_current_cpu_online+0xc6/0x220 kernel/rcu/tree.c:971 rcu_read_lock_held+0x8a/0xd0 kernel/rcu/update.c:279 xa_entry include/linux/xarray.h:902 [inline] xas_descend+0x404/0x500 lib/xarray.c:198 xas_load+0xf4/0x160 lib/xarray.c:234 find_get_entry+0x350/0x10a0 mm/filemap.c:1476 pagecache_get_page+0xe6/0x1020 mm/filemap.c:1579 find_or_create_page include/linux/pagemap.h:322 [inline] grow_dev_page fs/buffer.c:947 [inline] grow_buffers fs/buffer.c:1016 [inline] __getblk_slow fs/buffer.c:1043 [inline] __getblk_gfp+0x38a/0xd20 fs/buffer.c:1320 __bread_gfp+0x2f/0x300 fs/buffer.c:1354 sb_bread include/linux/buffer_head.h:307 [inline] udf_tread+0xf1/0x140 fs/udf/misc.c:44 udf_read_tagged+0x50/0x530 fs/udf/misc.c:210 udf_check_anchor_block+0x1d5/0x640 fs/udf/super.c:1775 udf_scan_anchors+0x1cf/0x850 fs/udf/super.c:1815 udf_find_anchor fs/udf/super.c:1880 [inline] udf_load_vrs+0x968/0xdd0 fs/udf/super.c:1937 udf_fill_super+0xbac/0x2383 fs/udf/super.c:2132 mount_bdev+0x307/0x3c0 fs/super.c:1159 udf_mount+0x35/0x40 fs/udf/super.c:131 mount_fs+0x123/0x43a fs/super.c:1258 vfs_kern_mount.part.0+0xdb/0x570 fs/namespace.c:959 vfs_kern_mount fs/namespace.c:949 [inline] do_new_mount fs/namespace.c:2513 [inline] do_mount+0x58e/0x3330 fs/namespace.c:2847 ksys_mount+0xdb/0x150 fs/namespace.c:3063 __do_sys_mount fs/namespace.c:3077 [inline] __se_sys_mount fs/namespace.c:3074 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3074 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f45f450ec78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457ec9 RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f45f450f6d4 R13: 00000000004c3bc5 R14: 00000000004d69d0 R15: 00000000ffffffff