REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 1024, max batch 900, max commit age 5, max trans age 5 REISERFS (device loop0): checking transaction log (loop0) REISERFS (device loop0): Using rupasov hash to sort names INFO: task syz-executor.3:2558 blocked for more than 140 seconds. Not tainted 4.19.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D11080 2558 1 0x00080006 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x2ee/0x8c0 kernel/sched/core.c:3473 schedule+0x31/0x90 kernel/sched/core.c:3517 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:566 [inline] rwsem_down_write_failed+0x17c/0x2a0 kernel/locking/rwsem-xadd.c:595 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x3e/0x60 kernel/locking/rwsem.c:72 deactivate_super fs/super.c:359 [inline] deactivate_super+0x44/0x50 fs/super.c:356 cleanup_mnt+0x36/0x70 fs/namespace.c:1098 __cleanup_mnt+0xd/0x10 fs/namespace.c:1105 task_work_run+0x89/0xb0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0xd8/0xf0 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x159/0x160 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fd24e96d017 Code: Bad RIP value. RSP: 002b:00007fff0f2463f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fd24e96d017 RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007fff0f2464b0 RBP: 00007fff0f2464b0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff0f247570 R13: 00007fd24e9b73b9 R14: 000000000000a778 R15: 0000000000000002 INFO: task syz-executor.5:5051 blocked for more than 140 seconds. Not tainted 4.19.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D13864 5051 2577 0x00080006 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x2ee/0x8c0 kernel/sched/core.c:3473 schedule+0x31/0x90 kernel/sched/core.c:3517 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline] rwsem_down_read_failed+0x103/0x170 kernel/locking/rwsem-xadd.c:286 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+0x34/0x50 kernel/locking/rwsem.c:26 iterate_supers+0x78/0x100 fs/super.c:631 quota_sync_all fs/quota/quota.c:67 [inline] kernel_quotactl+0x2e6/0x8b0 fs/quota/quota.c:854 __do_sys_quotactl fs/quota/quota.c:892 [inline] __se_sys_quotactl fs/quota/quota.c:889 [inline] __x64_sys_quotactl+0x19/0x20 fs/quota/quota.c:889 do_syscall_64+0x63/0x160 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f509ec15ce9 Code: Bad RIP value. RSP: 002b:00007f509e7980c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f509ed34f80 RCX: 00007f509ec15ce9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007f509ec6247a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f509ed34f80 R15: 00007ffdc4b1e118 INFO: task syz-executor.4:5054 blocked for more than 140 seconds. Not tainted 4.19.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D14072 5054 2565 0x00080006 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x2ee/0x8c0 kernel/sched/core.c:3473 schedule+0x31/0x90 kernel/sched/core.c:3517 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline] rwsem_down_read_failed+0x103/0x170 kernel/locking/rwsem-xadd.c:286 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+0x34/0x50 kernel/locking/rwsem.c:26 iterate_supers+0x78/0x100 fs/super.c:631 quota_sync_all fs/quota/quota.c:67 [inline] kernel_quotactl+0x2e6/0x8b0 fs/quota/quota.c:854 __do_sys_quotactl fs/quota/quota.c:892 [inline] __se_sys_quotactl fs/quota/quota.c:889 [inline] __x64_sys_quotactl+0x19/0x20 fs/quota/quota.c:889 do_syscall_64+0x63/0x160 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f0bf8a41ce9 Code: Bad RIP value. RSP: 002b:00007f0bf85c40c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f0bf8b60f80 RCX: 00007f0bf8a41ce9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007f0bf8a8e47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f0bf8b60f80 R15: 00007ffe92db4928 INFO: task syz-executor.0:5060 blocked for more than 140 seconds. Not tainted 4.19.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D14072 5060 2560 0x00080006 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x2ee/0x8c0 kernel/sched/core.c:3473 schedule+0x31/0x90 kernel/sched/core.c:3517 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline] rwsem_down_read_failed+0x103/0x170 kernel/locking/rwsem-xadd.c:286 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+0x34/0x50 kernel/locking/rwsem.c:26 iterate_supers+0x78/0x100 fs/super.c:631 quota_sync_all fs/quota/quota.c:67 [inline] kernel_quotactl+0x2e6/0x8b0 fs/quota/quota.c:854 __do_sys_quotactl fs/quota/quota.c:892 [inline] __se_sys_quotactl fs/quota/quota.c:889 [inline] __x64_sys_quotactl+0x19/0x20 fs/quota/quota.c:889 do_syscall_64+0x63/0x160 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fc1ca5b4ce9 Code: Bad RIP value. RSP: 002b:00007fc1ca1370c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007fc1ca6d3f80 RCX: 00007fc1ca5b4ce9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007fc1ca60147a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007fc1ca6d3f80 R15: 00007ffca4def818 INFO: task syz-executor.2:5065 blocked for more than 140 seconds. Not tainted 4.19.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D14072 5065 2580 0x00080006 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x2ee/0x8c0 kernel/sched/core.c:3473 schedule+0x31/0x90 kernel/sched/core.c:3517 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:269 [inline] rwsem_down_read_failed+0x103/0x170 kernel/locking/rwsem-xadd.c:286 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+0x34/0x50 kernel/locking/rwsem.c:26 iterate_supers+0x78/0x100 fs/super.c:631 quota_sync_all fs/quota/quota.c:67 [inline] kernel_quotactl+0x2e6/0x8b0 fs/quota/quota.c:854 __do_sys_quotactl fs/quota/quota.c:892 [inline] __se_sys_quotactl fs/quota/quota.c:889 [inline] __x64_sys_quotactl+0x19/0x20 fs/quota/quota.c:889 do_syscall_64+0x63/0x160 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fb8b49e8ce9 Code: Bad RIP value. RSP: 002b:00007fb8b456b0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007fb8b4b07f80 RCX: 00007fb8b49e8ce9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007fb8b4a3547a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007fb8b4b07f80 R15: 00007ffcc297ab58 Showing all locks held in the system: 1 lock held by khungtaskd/443: #0: 00000000377d4ced (rcu_read_lock){....}, at: debug_show_all_locks+0x23/0x10d kernel/locking/lockdep.c:4435 2 locks held by getty/1987: #0: 00000000b1af770f (&tty->ldisc_sem){....}, at: ldsem_down_read+0xe/0x10 drivers/tty/tty_ldsem.c:353 #1: 000000007a3fa9c0 (&ldata->atomic_read_lock){....}, at: n_tty_read+0xbc/0x860 drivers/tty/n_tty.c:2140 1 lock held by syz-executor.3/2558: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: deactivate_super fs/super.c:359 [inline] #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: deactivate_super+0x44/0x50 fs/super.c:356 5 locks held by syz-executor.1/5037: 1 lock held by syz-executor.5/5051: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 1 lock held by syz-executor.4/5054: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 1 lock held by syz-executor.0/5060: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 1 lock held by syz-executor.2/5065: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 1 lock held by syz-executor.1/6921: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 1 lock held by syz-executor.4/7068: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 1 lock held by syz-executor.5/7085: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 1 lock held by syz-executor.2/7131: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 1 lock held by syz-executor.0/7141: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 1 lock held by syz-executor.1/8415: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 1 lock held by syz-executor.4/8773: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 1 lock held by syz-executor.5/8782: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 1 lock held by syz-executor.2/8799: #0: 00000000b91d26a0 (&type->s_umount_key#54){....}, at: iterate_supers+0x78/0x100 fs/super.c:631 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 443 Comm: khungtaskd Not tainted 4.19.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x89/0xba lib/dump_stack.c:113 nmi_cpu_backtrace.cold.0+0x14/0x53 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0xc5/0xce 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:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline] watchdog+0x2c7/0x400 kernel/hung_task.c:265 kthread+0x119/0x130 kernel/kthread.c:246 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:413 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5031 Comm: loop3 Not tainted 4.19.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:kthread_worker_fn+0x87/0x1a0 kernel/kthread.c:662 Code: 4c 89 73 68 e8 ba 17 ed 00 4d 85 f6 0f 84 9a 00 00 00 65 48 8b 04 25 00 4f 01 00 4c 89 f7 48 c7 40 10 00 00 00 00 41 ff 56 10 <49> c7 c6 24 eb 91 83 65 48 8b 04 25 00 4f 01 00 f6 40 25 80 0f 84 RSP: 0018:ffffc90001defec8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88013930f5d0 RCX: ffffc90001defce4 RDX: 0000000000000001 RSI: 0000000000000001 RDI: 00000000ffffffff RBP: ffffc90001defef0 R08: ffff880138e14680 R09: ffff88013ba21e58 R10: 00000000000af5c8 R11: 00000000000af5c8 R12: ffff88013930f5d8 R13: ffff88013930f610 R14: ffff88013a3e0730 R15: ffff880138e14680 FS: 0000000000000000(0000) GS:ffff88013ba00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f271620d866 CR3: 0000000134fe1000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: loop_kthread_worker_fn+0x19/0x20 drivers/block/loop.c:890 kthread+0x119/0x130 kernel/kthread.c:246 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:413