INFO: task syz-executor370:3972 blocked for more than 143 seconds. Not tainted 6.0.0-rc6-syzkaller-00321-g105a36f3694e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor370 state:D stack:26216 pid: 3972 ppid: 3642 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0xadf/0x52b0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 io_schedule+0xba/0x130 kernel/sched/core.c:8714 folio_wait_bit_common+0x3dd/0xa90 mm/filemap.c:1298 __folio_lock mm/filemap.c:1664 [inline] folio_lock include/linux/pagemap.h:939 [inline] folio_lock include/linux/pagemap.h:935 [inline] __filemap_get_folio+0xc6d/0xed0 mm/filemap.c:1936 truncate_inode_pages_range+0x37c/0x1510 mm/truncate.c:378 ntfs_evict_inode+0x16/0xa0 fs/ntfs3/inode.c:1741 evict+0x2ed/0x6b0 fs/inode.c:665 iput_final fs/inode.c:1748 [inline] iput.part.0+0x55d/0x810 fs/inode.c:1774 iput+0x58/0x70 fs/inode.c:1764 ntfs_fill_super+0x2e89/0x37f0 fs/ntfs3/super.c:1190 get_tree_bdev+0x440/0x760 fs/super.c:1323 vfs_get_tree+0x89/0x2f0 fs/super.c:1530 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1326/0x1e20 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f979cf29aca RSP: 002b:00007fffb7eb3f88 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fffb7eb3fe0 RCX: 00007f979cf29aca RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffb7eb3fa0 RBP: 00007fffb7eb3fa0 R08: 00007fffb7eb3fe0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000286 R12: 0000000020001b80 R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000110 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8bf888b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/14: #0: ffffffff8bf885b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/29: #0: ffffffff8bf89400 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6492 2 locks held by getty/3282: #0: ffff888026101098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002d232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef0/0x13e0 drivers/tty/n_tty.c:2177 1 lock held by syz-executor370/3644: #0: ffffffff8bf940b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline] #0: ffffffff8bf940b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x562/0x670 kernel/rcu/tree_exp.h:940 1 lock held by syz-executor370/3646: #0: ffffffff8bf940b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline] #0: ffffffff8bf940b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x24a/0x670 kernel/rcu/tree_exp.h:940 3 locks held by kworker/u4:0/3654: 3 locks held by kworker/0:2/3658: #0: ffff8880b9a39f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:544 #1: ffff8880b9a277c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3e7/0x4e0 kernel/sched/psi.c:885 #2: ffff8880b9a43458 (&ACCESS_PRIVATE(sdp, lock)){....}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:374 [inline] #2: ffff8880b9a43458 (&ACCESS_PRIVATE(sdp, lock)){....}-{2:2}, at: srcu_invoke_callbacks+0x246/0x3c0 kernel/rcu/srcutree.c:1576 2 locks held by kworker/1:0/3692: #0: ffff888011866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888011866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888011866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888011866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888011866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888011866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260 #1: ffffc90003cffda8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264 1 lock held by syz-executor370/3972: #0: ffff88807de940e0 (&type->s_umount_key#41/1){+.+.}-{3:3}, at: alloc_super+0x22e/0xb60 fs/super.c:228 2 locks held by kworker/u4:5/5645: #0: ffff8880b9a39f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:544 #1: ffff8880b9b277c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3e7/0x4e0 kernel/sched/psi.c:885 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.0.0-rc6-syzkaller-00321-g105a36f3694e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xc18/0xf50 kernel/hung_task.c:369 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3641 Comm: syz-executor370 Not tainted 6.0.0-rc6-syzkaller-00321-g105a36f3694e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline] RIP: 0010:write_comp_data+0x21/0x90 kernel/kcov.c:229 Code: 84 00 00 00 00 00 0f 1f 00 65 8b 05 a9 6a 86 7e 49 89 f1 89 c6 49 89 d2 81 e6 00 01 00 00 49 89 f8 65 48 8b 14 25 80 6f 02 00 00 01 ff 00 74 0e 85 f6 74 59 8b 82 bc 15 00 00 85 c0 74 4f 8b RSP: 0018:ffffc90003c5fee0 EFLAGS: 00000046 RAX: 0000000080000000 RBX: ffff888020a75880 RCX: ffffffff812d2828 RDX: ffff888020a75880 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888020a77140 R14: 0000000000000000 R15: 0000000000000000 FS: 0000555557245300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002003f000 CR3: 0000000079ce7000 CR4: 0000000000350ef0 Call Trace: trace_x86_fpu_regs_activated arch/x86/include/asm/trace/fpu.h:57 [inline] fpregs_activate arch/x86/kernel/fpu/context.h:51 [inline] fpregs_restore_userregs+0x128/0x3d0 arch/x86/kernel/fpu/context.h:77 arch_exit_to_user_mode_prepare arch/x86/include/asm/entry-common.h:58 [inline] exit_to_user_mode_prepare+0x1d7/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f979cf4cd8a Code: 83 ff 03 74 3b 48 83 ec 28 b8 fa ff ff ff 83 ff 02 49 89 ca 0f 44 f8 64 8b 04 25 18 00 00 00 85 c0 75 2d b8 e6 00 00 00 0f 05 <89> c2 f7 da 3d 00 f0 ff ff b8 00 00 00 00 0f 47 c2 48 83 c4 28 c3 RSP: 002b:00007fffb7eb40b0 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6 RAX: 0000000000000000 RBX: 00000000000d23ca RCX: 00007f979cf4cd8a RDX: 00007fffb7eb40f0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000000199b R08: 000000000000035d R09: 00007fffb7f84080 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffb7eb413c R13: 00007fffb7eb4170 R14: 00007fffb7eb4150 R15: 0000000000000236