INFO: task syz-executor364:6915 blocked for more than 143 seconds.
Not tainted 6.4.0-rc6-next-20230616-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor364 state:D stack:29992 pid:6915 ppid:5026 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6709
schedule+0xde/0x1a0 kernel/sched/core.c:6785
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6844
rwsem_down_read_slowpath+0x57c/0xae0 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0xf0/0x480 kernel/locking/rwsem.c:1522
iterate_supers+0xdf/0x2a0 fs/super.c:742
ksys_sync+0x8a/0x150 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbea9f17d69
RSP: 002b:00007fbea9ea82f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fbea9f9f4d0 RCX: 00007fbea9f17d69
RDX: 00007fbea9f17d69 RSI: 00000000000f4240 RDI: 0000000000000081
RBP: 00007fbea9f9f4dc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbea9f6d06c
R13: 0030656c69662f2e R14: 64663d736e617274 R15: 00007fbea9f9f4d8
INFO: task syz-executor364:6913 blocked for more than 143 seconds.
Not tainted 6.4.0-rc6-next-20230616-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor364 state:D stack:27392 pid:6913 ppid:5025 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6709
schedule+0xde/0x1a0 kernel/sched/core.c:6785
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6844
rwsem_down_read_slowpath+0x57c/0xae0 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0xf0/0x480 kernel/locking/rwsem.c:1522
iterate_supers+0xdf/0x2a0 fs/super.c:742
ksys_sync+0x8a/0x150 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbea9f17d69
RSP: 002b:00007fbea9ec92f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fbea9f9f4c0 RCX: 00007fbea9f17d69
RDX: ffffffffffffffb8 RSI: 0000000000000000 RDI: 0000000000000080
RBP: 00007fbea9f9f4cc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbea9f6d06c
R13: 0030656c69662f2e R14: 64663d736e617274 R15: 00007fbea9f9f4c8
INFO: task syz-executor364:6912 blocked for more than 143 seconds.
Not tainted 6.4.0-rc6-next-20230616-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor364 state:D stack:27296 pid:6912 ppid:5031 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6709
schedule+0xde/0x1a0 kernel/sched/core.c:6785
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6844
rwsem_down_read_slowpath+0x57c/0xae0 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0xf0/0x480 kernel/locking/rwsem.c:1522
iterate_supers+0xdf/0x2a0 fs/super.c:742
ksys_sync+0x8a/0x150 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbea9f17d69
RSP: 002b:00007fbea9ec92f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fbea9f9f4c0 RCX: 00007fbea9f17d69
RDX: 00007fbea9f17d69 RSI: 00000000000f4240 RDI: 0000000000000081
RBP: 00007fbea9f9f4cc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbea9f6d06c
R13: 0030656c69662f2e R14: 64663d736e617274 R15: 00007fbea9f9f4c8
INFO: task syz-executor364:6914 blocked for more than 144 seconds.
Not tainted 6.4.0-rc6-next-20230616-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor364 state:D stack:27296 pid:6914 ppid:5028 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6709
schedule+0xde/0x1a0 kernel/sched/core.c:6785
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6844
rwsem_down_read_slowpath+0x57c/0xae0 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0xf0/0x480 kernel/locking/rwsem.c:1522
iterate_supers+0xdf/0x2a0 fs/super.c:742
ksys_sync+0x8a/0x150 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbea9f17d69
RSP: 002b:00007fbea9ec92f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fbea9f9f4c0 RCX: 00007fbea9f17d69
RDX: ffffffffffffffb8 RSI: 0000000000000000 RDI: 0000000000000080
RBP: 00007fbea9f9f4cc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbea9f6d06c
R13: 0030656c69662f2e R14: 64663d736e617274 R15: 00007fbea9f9f4c8
INFO: task syz-executor364:6917 blocked for more than 144 seconds.
Not tainted 6.4.0-rc6-next-20230616-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor364 state:D stack:27312 pid:6917 ppid:5027 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6709
schedule+0xde/0x1a0 kernel/sched/core.c:6785
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6844
rwsem_down_read_slowpath+0x57c/0xae0 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0xf0/0x480 kernel/locking/rwsem.c:1522
iterate_supers+0xdf/0x2a0 fs/super.c:742
ksys_sync+0x8a/0x150 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbea9f17d69
RSP: 002b:00007fbea9ec92f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fbea9f9f4c0 RCX: 00007fbea9f17d69
RDX: ffffffffffffffb8 RSI: 0000000000000000 RDI: 0000000000000080
RBP: 00007fbea9f9f4cc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbea9f6d06c
R13: 0030656c69662f2e R14: 64663d736e617274 R15: 00007fbea9f9f4c8
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c9a1ab0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xe60 kernel/rcu/tasks.h:568
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c9a1770 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xe60 kernel/rcu/tasks.h:568
1 lock held by khungtaskd/28:
#0: ffffffff8c9a26c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x390 kernel/locking/lockdep.c:6615
2 locks held by getty/4777:
#0: ffff88823bca8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xf02/0x13f0 drivers/tty/n_tty.c:2176
1 lock held by syz-executor364/6907:
#0: ffff88807984a0e0 (&type->s_umount_key#41/1){+.+.}-{3:3}, at: alloc_super+0x22e/0xb40 fs/super.c:228
1 lock held by syz-executor364/6915:
#0: ffff88807984a0e0 (&type->s_umount_key#63){.+.+}-{3:3}, at: iterate_supers+0xdf/0x2a0 fs/super.c:742
1 lock held by syz-executor364/6913:
#0: ffff88807984a0e0 (&type->s_umount_key#63){.+.+}-{3:3}, at: iterate_supers+0xdf/0x2a0 fs/super.c:742
1 lock held by syz-executor364/6912:
#0: ffff88807984a0e0 (&type->s_umount_key#63){.+.+}-{3:3}, at: iterate_supers+0xdf/0x2a0 fs/super.c:742
1 lock held by syz-executor364/6914:
#0: ffff88807984a0e0 (&type->s_umount_key#63){.+.+}-{3:3}, at: iterate_supers+0xdf/0x2a0 fs/super.c:742
1 lock held by syz-executor364/6917:
#0: ffff88807984a0e0 (&type->s_umount_key#63){.+.+}-{3:3}, at: iterate_supers+0xdf/0x2a0 fs/super.c:742
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc6-next-20230616-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:154 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12 Comm: kworker/u4:1 Not tainted 6.4.0-rc6-next-20230616-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:choose_new_asid arch/x86/mm/tlb.c:224 [inline]
RIP: 0010:switch_mm_irqs_off+0x6d4/0xbb0 arch/x86/mm/tlb.c:631
Code: ef 5b 5d 41 5c 41 5d 41 5e 41 5f e9 06 34 f4 ff 48 83 c4 30 5b 5d 41 5c 41 5d 41 5e 41 5f c3 31 c0 bb 01 00 00 00 66 89 04 24 0c fc ff ff 4c 89 e8 4c 09 f8 a8 02 0f 84 a5 fa ff ff 41 83 e7
RSP: 0018:ffffc90000117978 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8139b8ac
RDX: 1ffffffff19617c1 RSI: 0000000000000008 RDI: ffffffff8cb0be08
RBP: ffff888012868000 R08: 0000000000000000 R09: fffffbfff19617c1
R10: ffffffff8cb0be0f R11: 0000000000000001 R12: ffffffff8cb0be08
R13: 0000000000000000 R14: ffffffff8cb0b820 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005569741cffe8 CR3: 0000000012863000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unuse_temporary_mm arch/x86/kernel/alternative.c:1684 [inline]
__text_poke+0x3c5/0x890 arch/x86/kernel/alternative.c:1794
text_poke arch/x86/kernel/alternative.c:1837 [inline]
text_poke_bp_batch+0x3c7/0x780 arch/x86/kernel/alternative.c:2170
text_poke_flush arch/x86/kernel/alternative.c:2339 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2336 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2346
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32f/0x410 kernel/jump_label.c:829
static_key_disable_cpuslocked+0x156/0x1b0 kernel/jump_label.c:235
static_key_disable+0x1a/0x20 kernel/jump_label.c:243
toggle_allocation_gate mm/kfence/core.c:836 [inline]
toggle_allocation_gate+0x143/0x230 mm/kfence/core.c:823
process_one_work+0xa34/0x16f0 kernel/workqueue.c:2594
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2745
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.382 msecs