INFO: task syz-executor.2:5516 blocked for more than 143 seconds. Not tainted 6.10.0-rc2-syzkaller-gc3f38fa61af7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:26712 pid:5516 tgid:5516 ppid:5396 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x1796/0x49d0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 request_wait_answer fs/fuse/dev.c:407 [inline] __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513 fuse_do_getattr+0x39a/0x7f0 fs/fuse/dir.c:1271 fuse_update_get_attr+0xa01/0x1870 fs/fuse/dir.c:1328 vfs_statx+0x1a5/0x4e0 fs/stat.c:248 vfs_fstatat+0x135/0x190 fs/stat.c:304 __do_sys_newfstatat fs/stat.c:468 [inline] __se_sys_newfstatat fs/stat.c:462 [inline] __x64_sys_newfstatat+0x125/0x1b0 fs/stat.c:462 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x456e69 RSP: 002b:00007f9d261cd0d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 000000000055bf80 RCX: 0000000000456e69 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00000000004b0ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b0297 R13: 000000000000000b R14: 000000000055bf80 R15: 00007ffd7f61ced8 INFO: task syz-executor.2:5520 blocked for more than 143 seconds. Not tainted 6.10.0-rc2-syzkaller-gc3f38fa61af7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:26320 pid:5520 tgid:5520 ppid:5396 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x1796/0x49d0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 request_wait_answer fs/fuse/dev.c:407 [inline] __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513 fuse_do_getattr+0x39a/0x7f0 fs/fuse/dir.c:1271 fuse_update_get_attr+0xa01/0x1870 fs/fuse/dir.c:1328 vfs_statx+0x1a5/0x4e0 fs/stat.c:248 vfs_fstatat+0x135/0x190 fs/stat.c:304 __do_sys_newfstatat fs/stat.c:468 [inline] __se_sys_newfstatat fs/stat.c:462 [inline] __x64_sys_newfstatat+0x125/0x1b0 fs/stat.c:462 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x456e69 RSP: 002b:00007f9d261cd0d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 000000000055bf80 RCX: 0000000000456e69 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00000000004b0ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b0297 R13: 000000000000000b R14: 000000000055bf80 R15: 00007ffd7f61ced8 INFO: task syz-executor.0:5530 blocked for more than 144 seconds. Not tainted 6.10.0-rc2-syzkaller-gc3f38fa61af7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:26320 pid:5530 tgid:5530 ppid:5395 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x1796/0x49d0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 request_wait_answer fs/fuse/dev.c:407 [inline] __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513 fuse_do_getattr+0x39a/0x7f0 fs/fuse/dir.c:1271 fuse_update_get_attr+0xa01/0x1870 fs/fuse/dir.c:1328 vfs_statx+0x1a5/0x4e0 fs/stat.c:248 vfs_fstatat+0x135/0x190 fs/stat.c:304 __do_sys_newfstatat fs/stat.c:468 [inline] __se_sys_newfstatat fs/stat.c:462 [inline] __x64_sys_newfstatat+0x125/0x1b0 fs/stat.c:462 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x456e69 RSP: 002b:00007fadfd0b60d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 000000000055bf80 RCX: 0000000000456e69 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00000000004b0ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b0297 R13: 000000000000000b R14: 000000000055bf80 R15: 00007fff379db638 INFO: task syz-executor.4:5550 blocked for more than 144 seconds. Not tainted 6.10.0-rc2-syzkaller-gc3f38fa61af7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:26320 pid:5550 tgid:5550 ppid:5394 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x1796/0x49d0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 request_wait_answer fs/fuse/dev.c:407 [inline] __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513 fuse_do_getattr+0x39a/0x7f0 fs/fuse/dir.c:1271 fuse_update_get_attr+0xa01/0x1870 fs/fuse/dir.c:1328 vfs_statx+0x1a5/0x4e0 fs/stat.c:248 vfs_fstatat+0x135/0x190 fs/stat.c:304 __do_sys_newfstatat fs/stat.c:468 [inline] __se_sys_newfstatat fs/stat.c:462 [inline] __x64_sys_newfstatat+0x125/0x1b0 fs/stat.c:462 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x456e69 RSP: 002b:00007fac52c9d0d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 000000000055bf80 RCX: 0000000000456e69 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00000000004b0ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b0297 R13: 000000000000000b R14: 000000000055bf80 R15: 00007fff3c103de8 INFO: task syz-executor.5:5570 blocked for more than 144 seconds. Not tainted 6.10.0-rc2-syzkaller-gc3f38fa61af7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:25040 pid:5570 tgid:5570 ppid:5397 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x1796/0x49d0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 request_wait_answer fs/fuse/dev.c:407 [inline] __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513 fuse_do_getattr+0x39a/0x7f0 fs/fuse/dir.c:1271 fuse_update_get_attr+0xa01/0x1870 fs/fuse/dir.c:1328 vfs_statx+0x1a5/0x4e0 fs/stat.c:248 vfs_fstatat+0x135/0x190 fs/stat.c:304 __do_sys_newfstatat fs/stat.c:468 [inline] __se_sys_newfstatat fs/stat.c:462 [inline] __x64_sys_newfstatat+0x125/0x1b0 fs/stat.c:462 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x456e69 RSP: 002b:00007ff55bd450d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 000000000055bf80 RCX: 0000000000456e69 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00000000004b0ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b0297 R13: 000000000000000b R14: 000000000055bf80 R15: 00007ffc12f95348 INFO: task syz-executor.0:5571 blocked for more than 145 seconds. Not tainted 6.10.0-rc2-syzkaller-gc3f38fa61af7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:25776 pid:5571 tgid:5571 ppid:5395 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x1796/0x49d0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 request_wait_answer fs/fuse/dev.c:407 [inline] __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513 fuse_do_getattr+0x39a/0x7f0 fs/fuse/dir.c:1271 fuse_update_get_attr+0xa01/0x1870 fs/fuse/dir.c:1328 vfs_statx+0x1a5/0x4e0 fs/stat.c:248 vfs_fstatat+0x135/0x190 fs/stat.c:304 __do_sys_newfstatat fs/stat.c:468 [inline] __se_sys_newfstatat fs/stat.c:462 [inline] __x64_sys_newfstatat+0x125/0x1b0 fs/stat.c:462 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x456e69 RSP: 002b:00007fadfd0b60d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 000000000055bf80 RCX: 0000000000456e69 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00000000004b0ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b0297 R13: 000000000000000b R14: 000000000055bf80 R15: 00007fff379db638 INFO: task syz-executor.3:5574 blocked for more than 145 seconds. Not tainted 6.10.0-rc2-syzkaller-gc3f38fa61af7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:24720 pid:5574 tgid:5574 ppid:5390 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x1796/0x49d0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 request_wait_answer fs/fuse/dev.c:407 [inline] __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513 fuse_do_getattr+0x39a/0x7f0 fs/fuse/dir.c:1271 fuse_update_get_attr+0xa01/0x1870 fs/fuse/dir.c:1328 vfs_statx+0x1a5/0x4e0 fs/stat.c:248 vfs_fstatat+0x135/0x190 fs/stat.c:304 __do_sys_newfstatat fs/stat.c:468 [inline] __se_sys_newfstatat fs/stat.c:462 [inline] __x64_sys_newfstatat+0x125/0x1b0 fs/stat.c:462 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x456e69 RSP: 002b:00007efd3843d0d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 000000000055bf80 RCX: 0000000000456e69 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00000000004b0ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b0297 R13: 000000000000000b R14: 000000000055bf80 R15: 00007ffeb89a7968 INFO: task syz-executor.3:5616 blocked for more than 145 seconds. Not tainted 6.10.0-rc2-syzkaller-gc3f38fa61af7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:26320 pid:5616 tgid:5616 ppid:5390 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x1796/0x49d0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 request_wait_answer fs/fuse/dev.c:407 [inline] __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513 fuse_do_getattr+0x39a/0x7f0 fs/fuse/dir.c:1271 fuse_update_get_attr+0xa01/0x1870 fs/fuse/dir.c:1328 vfs_statx+0x1a5/0x4e0 fs/stat.c:248 vfs_fstatat+0x135/0x190 fs/stat.c:304 __do_sys_newfstatat fs/stat.c:468 [inline] __se_sys_newfstatat fs/stat.c:462 [inline] __x64_sys_newfstatat+0x125/0x1b0 fs/stat.c:462 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x456e69 RSP: 002b:00007efd3843d0d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 000000000055bf80 RCX: 0000000000456e69 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00000000004b0ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b0297 R13: 000000000000000b R14: 000000000055bf80 R15: 00007ffeb89a7968 INFO: task syz-executor.0:5679 blocked for more than 146 seconds. Not tainted 6.10.0-rc2-syzkaller-gc3f38fa61af7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:26320 pid:5679 tgid:5679 ppid:5395 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x1796/0x49d0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 request_wait_answer fs/fuse/dev.c:407 [inline] __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513 fuse_do_getattr+0x39a/0x7f0 fs/fuse/dir.c:1271 fuse_update_get_attr+0xa01/0x1870 fs/fuse/dir.c:1328 vfs_statx+0x1a5/0x4e0 fs/stat.c:248 vfs_fstatat+0x135/0x190 fs/stat.c:304 __do_sys_newfstatat fs/stat.c:468 [inline] __se_sys_newfstatat fs/stat.c:462 [inline] __x64_sys_newfstatat+0x125/0x1b0 fs/stat.c:462 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x456e69 RSP: 002b:00007fadfd0b60d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 000000000055bf80 RCX: 0000000000456e69 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00000000004b0ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b0297 R13: 000000000000000b R14: 000000000055bf80 R15: 00007fff379db638 INFO: task syz-executor.2:5785 blocked for more than 146 seconds. Not tainted 6.10.0-rc2-syzkaller-gc3f38fa61af7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:25040 pid:5785 tgid:5785 ppid:5396 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x1796/0x49d0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 request_wait_answer fs/fuse/dev.c:407 [inline] __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513 fuse_do_getattr+0x39a/0x7f0 fs/fuse/dir.c:1271 fuse_update_get_attr+0xa01/0x1870 fs/fuse/dir.c:1328 vfs_statx+0x1a5/0x4e0 fs/stat.c:248 vfs_fstatat+0x135/0x190 fs/stat.c:304 __do_sys_newfstatat fs/stat.c:468 [inline] __se_sys_newfstatat fs/stat.c:462 [inline] __x64_sys_newfstatat+0x125/0x1b0 fs/stat.c:462 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x456e69 RSP: 002b:00007f9d261cd0d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 000000000055bf80 RCX: 0000000000456e69 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00000000004b0ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b0297 R13: 000000000000000b R14: 000000000055bf80 R15: 00007ffd7f61ced8 Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 4 locks held by kworker/u8:8/1269: 2 locks held by getty/4834: #0: ffff88802afc00a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc2-syzkaller-gc3f38fa61af7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xfde/0x1020 kernel/hung_task.c:379 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline] NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112