INFO: task syz-executor.1:6073 blocked for more than 143 seconds.
Not tainted 5.16.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26816 pid: 6073 ppid: 3656 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1041
__down_read_common kernel/locking/rwsem.c:1223 [inline]
__down_read kernel/locking/rwsem.c:1232 [inline]
down_read+0xe2/0x440 kernel/locking/rwsem.c:1472
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
exit_mm kernel/exit.c:483 [inline]
do_exit+0xa0a/0x2b40 kernel/exit.c:819
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x2220 kernel/signal.c:2852
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fc889356e99
RSP: 002b:00007fc887ccc168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007fc889469f60 RCX: 00007fc889356e99
RDX: 0000000020000200 RSI: 0000000000005452 RDI: 0000000000000004
RBP: 00007fc8893b0ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc88999db1f R14: 00007fc887ccc300 R15: 0000000000022000
Showing all locks held in the system:
2 locks held by kworker/u4:1/10:
#0: ffff8880b9c39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9c279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a6/0x490 kernel/sched/psi.c:880
1 lock held by khungtaskd/26:
#0: ffffffff8bb83da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by getty/3290:
#0: ffff88814ab0d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
1 lock held by syz-executor.1/6072:
#0: ffff88807bcb1d28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
#0: ffff88807bcb1d28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_mprotect_pkey+0x1e0/0x980 mm/mprotect.c:551
1 lock held by syz-executor.1/6073:
#0: ffff88807bcb1d28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88807bcb1d28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline]
#0: ffff88807bcb1d28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0xa0a/0x2b40 kernel/exit.c:819
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2961 Comm: klogd Not tainted 5.16.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:psi_group_change+0x8f5/0xc20 kernel/sched/psi.c:739
Code: 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 30 48 c1 ea 03 80 3c 02 00 0f 85 ab 01 00 00 48 8b 44 24 08 48 03 2c c5 a0 48 56 8b <48> b8 00 00 00 00 00 fc ff df 48 8d bd 18 0a 00 00 48 89 fa 48 c1
RSP: 0018:ffffc90000007df8 EFLAGS: 00000082
RAX: 0000000000000000 RBX: ffff8880b9c279c0 RCX: 0000000000000006
RDX: 1ffffffff16ac914 RSI: 0000000000000001 RDI: ffff8880b9c279f4
RBP: ffff8880b9c39a80 R08: 0000000000000002 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000054
R13: dffffc0000000000 R14: ffffed1017384f3e R15: ffff8880b9c279f0
FS: 00007f01ba2dc800(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0005d4c5c CR3: 00000000221f6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
psi_enqueue kernel/sched/stats.h:131 [inline]
enqueue_task kernel/sched/core.c:1995 [inline]
activate_task kernel/sched/core.c:2024 [inline]
ttwu_do_activate+0x2b4/0x7b0 kernel/sched/core.c:3600
sched_ttwu_pending+0x263/0x550 kernel/sched/core.c:3675
flush_smp_call_function_queue+0x3da/0x640 kernel/smp.c:678
__sysvec_call_function_single+0x95/0x3d0 arch/x86/kernel/smp.c:248
sysvec_call_function_single+0x8e/0xc0 arch/x86/kernel/smp.c:243
asm_sysvec_call_function_single+0x12/0x20 arch/x86/include/asm/idtentry.h:646
RIP: 0010:finish_task_switch.isra.0+0x323/0xb80 kernel/sched/core.c:4852
Code: 93 5a f3 07 85 c0 75 02 0f 0b 48 85 db 0f 85 25 01 00 00 4c 89 f7 e8 fc f7 ff ff e8 87 3c 2d 00 fb 65 48 8b 1c 25 40 70 02 00 <48> 8d bb 80 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc90001acfa98 EFLAGS: 00000206
RAX: 000000000002e571 RBX: ffff88807d529d00 RCX: 1ffffffff1b22571
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90001acfae0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817dd258 R11: 0000000000000001 R12: ffff8880b9c3a7d8
R13: ffff888010e81d00 R14: ffff8880b9c39a80 R15: ffff8880b9c3a4b8
context_switch kernel/sched/core.c:4975 [inline]
__schedule+0xaa2/0x4900 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
syslog_print+0x1c2/0x580 kernel/printk/printk.c:1503
do_syslog.part.0+0x202/0x640 kernel/printk/printk.c:1655
do_syslog kernel/printk/printk.c:1745 [inline]
__do_sys_syslog kernel/printk/printk.c:1747 [inline]
__se_sys_syslog kernel/printk/printk.c:1745 [inline]
__x64_sys_syslog+0x97/0xc0 kernel/printk/printk.c:1745
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+0x44/0xae
RIP: 0033:0x7f01ba4778b7
Code: 73 01 c3 48 8b 0d c1 05 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 05 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffea17ac9a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007f01ba604490 RCX: 00007f01ba4778b7
RDX: 00000000000003ff RSI: 00007f01ba604490 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 000055ed03a59cf0
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f01ba604490
R13: 00007f01ba6044ab R14: 00007f01ba6044ab R15: 0000000000000000
----------------
Code disassembly (best guess):
0: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
7: fc ff df
a: 48 8b 54 24 30 mov 0x30(%rsp),%rdx
f: 48 c1 ea 03 shr $0x3,%rdx
13: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
17: 0f 85 ab 01 00 00 jne 0x1c8
1d: 48 8b 44 24 08 mov 0x8(%rsp),%rax
22: 48 03 2c c5 a0 48 56 add -0x74a9b760(,%rax,8),%rbp
29: 8b
* 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction
31: fc ff df
34: 48 8d bd 18 0a 00 00 lea 0xa18(%rbp),%rdi
3b: 48 89 fa mov %rdi,%rdx
3e: 48 rex.W
3f: c1 .byte 0xc1