INFO: task syz-executor113:5303 blocked for more than 143 seconds.
Not tainted 6.7.0-rc1-syzkaller-00125-g7475e51b8796 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor113 state:D stack:27376 pid:5303 tgid:5297 ppid:5060 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x120/0x330 kernel/locking/rwsem.c:1528
__super_lock fs/super.c:58 [inline]
super_lock+0x23c/0x380 fs/super.c:117
super_lock_shared fs/super.c:146 [inline]
iterate_supers+0xb9/0x230 fs/super.c:969
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:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fddb32cb799
RSP: 002b:00007fddb328c218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fddb33553e8 RCX: 00007fddb32cb799
RDX: ffffffffffffffb0 RSI: 0000000000000000 RDI: 0000000000000080
RBP: 00007fddb33553e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fddb332206c
R13: 00007fddb332203b R14: 0030656c69662f2e R15: 64663d736e617274
INFO: task syz-executor113:5304 blocked for more than 143 seconds.
Not tainted 6.7.0-rc1-syzkaller-00125-g7475e51b8796 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor113 state:D stack:27776 pid:5304 tgid:5298 ppid:5069 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x120/0x330 kernel/locking/rwsem.c:1528
__super_lock fs/super.c:58 [inline]
super_lock+0x23c/0x380 fs/super.c:117
super_lock_shared fs/super.c:146 [inline]
iterate_supers+0xb9/0x230 fs/super.c:969
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:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fddb32cb799
RSP: 002b:00007fddb328c218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fddb33553e8 RCX: 00007fddb32cb799
RDX: ffffffffffffffb0 RSI: 0000000000000000 RDI: 0000000000000080
RBP: 00007fddb33553e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fddb332206c
R13: 00007fddb332203b R14: 0030656c69662f2e R15: 64663d736e617274
INFO: task syz-executor113:5308 blocked for more than 143 seconds.
Not tainted 6.7.0-rc1-syzkaller-00125-g7475e51b8796 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor113 state:D stack:27568 pid:5308 tgid:5299 ppid:5065 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x120/0x330 kernel/locking/rwsem.c:1528
__super_lock fs/super.c:58 [inline]
super_lock+0x23c/0x380 fs/super.c:117
super_lock_shared fs/super.c:146 [inline]
iterate_supers+0xb9/0x230 fs/super.c:969
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:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fddb32cb799
RSP: 002b:00007fddb328c218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fddb33553e8 RCX: 00007fddb32cb799
RDX: 00007fddb32cb799 RSI: 00000000000f4240 RDI: 0000000000000081
RBP: 00007fddb33553e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fddb332206c
R13: 00007fddb332203b R14: 0030656c69662f2e R15: 64663d736e617274
INFO: task syz-executor113:5310 blocked for more than 144 seconds.
Not tainted 6.7.0-rc1-syzkaller-00125-g7475e51b8796 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor113 state:D stack:29856 pid:5310 tgid:5300 ppid:5061 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x120/0x330 kernel/locking/rwsem.c:1528
__super_lock fs/super.c:58 [inline]
super_lock+0x23c/0x380 fs/super.c:117
super_lock_shared fs/super.c:146 [inline]
iterate_supers+0xb9/0x230 fs/super.c:969
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:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fddb32cb799
RSP: 002b:00007fddb326b218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fddb33553f8 RCX: 00007fddb32cb799
RDX: 00007fddb32cb799 RSI: 0000000000000000 RDI: 0000000000000080
RBP: 00007fddb33553f0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fddb332206c
R13: 00007fddb332203b R14: 0030656c69662f2e R15: 64663d736e617274
INFO: task syz-executor113:5307 blocked for more than 144 seconds.
Not tainted 6.7.0-rc1-syzkaller-00125-g7475e51b8796 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor113 state:D stack:27072 pid:5307 tgid:5302 ppid:5068 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x120/0x330 kernel/locking/rwsem.c:1528
__super_lock fs/super.c:58 [inline]
super_lock+0x23c/0x380 fs/super.c:117
super_lock_shared fs/super.c:146 [inline]
iterate_supers+0xb9/0x230 fs/super.c:969
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:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fddb32cb799
RSP: 002b:00007fddb328c218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fddb33553e8 RCX: 00007fddb32cb799
RDX: ffffffffffffffb0 RSI: 0000000000000000 RDI: 0000000000000080
RBP: 00007fddb33553e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fddb332206c
R13: 00007fddb332203b R14: 0030656c69662f2e R15: 64663d736e617274
INFO: task syz-executor113:5312 blocked for more than 144 seconds.
Not tainted 6.7.0-rc1-syzkaller-00125-g7475e51b8796 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor113 state:D stack:29704 pid:5312 tgid:5301 ppid:5063 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x120/0x330 kernel/locking/rwsem.c:1528
__super_lock fs/super.c:58 [inline]
super_lock+0x23c/0x380 fs/super.c:117
super_lock_shared fs/super.c:146 [inline]
iterate_supers+0xb9/0x230 fs/super.c:969
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:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fddb32cb799
RSP: 002b:00007fddb326b218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fddb33553f8 RCX: 00007fddb32cb799
RDX: ffffffffffffffb0 RSI: 0000000000000000 RDI: 0000000000000080
RBP: 00007fddb33553f0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fddb332206c
R13: 00007fddb332203b R14: 0030656c69662f2e R15: 64663d736e617274
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8cfa82a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8cfa82a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8cfa82a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
2 locks held by getty/4811:
#0: ffff8880281c20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900020582f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201
1 lock held by syz-executor113/5303:
#0: ffff88807dd280e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807dd280e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: super_lock+0x23c/0x380 fs/super.c:117
1 lock held by syz-executor113/5304:
#0: ffff88807dd280e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807dd280e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: super_lock+0x23c/0x380 fs/super.c:117
1 lock held by syz-executor113/5308:
#0: ffff88807dd280e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807dd280e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: super_lock+0x23c/0x380 fs/super.c:117
1 lock held by syz-executor113/5305:
#0: ffff8880276de0e0 (&type->s_umount_key#60/1){+.+.}-{3:3}, at: alloc_super+0x238/0xb50 fs/super.c:352
1 lock held by syz-executor113/5310:
#0: ffff88807dd280e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807dd280e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: super_lock+0x23c/0x380 fs/super.c:117
1 lock held by syz-executor113/5307:
#0: ffff88807dd280e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807dd280e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: super_lock+0x23c/0x380 fs/super.c:117
1 lock held by syz-executor113/5306:
#0: ffff88807dd280e0 (&type->s_umount_key#60/1){+.+.}-{3:3}, at: alloc_super+0x238/0xb50 fs/super.c:352
1 lock held by syz-executor113/5312:
#0: ffff88807dd280e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88807dd280e0 (&type->s_umount_key#66){.+.+}-{3:3}, at: super_lock+0x23c/0x380 fs/super.c:117
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.7.0-rc1-syzkaller-00125-g7475e51b8796 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4498 Comm: klogd Not tainted 6.7.0-rc1-syzkaller-00125-g7475e51b8796 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data+0x12/0x80 kernel/kcov.c:236
Code: 04 25 00 bd 03 00 48 8b 80 f0 15 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 49 89 d2 49 89 f8 49 89 f1 65 48 8b 14 25 00 bd 03 00 <65> 8b 05 af 3b 7d 7e a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b 82 fc
RSP: 0018:ffffc9000344f490 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc9000344f518 RCX: ffffffff813a07bb
RDX: ffff88807c19c200 RSI: 0000000000000001 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000004 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000001
FS: 00007fc8b4bbd380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b76619c600 CR3: 000000007c112000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_next_frame+0x117b/0x2390 arch/x86/kernel/unwind_orc.c:664
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
__kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:763 [inline]
slab_alloc_node mm/slab.c:3237 [inline]
kmem_cache_alloc_node+0x173/0x4a0 mm/slab.c:3509
__alloc_skb+0x287/0x330 net/core/skbuff.c:641
alloc_skb include/linux/skbuff.h:1286 [inline]
alloc_skb_with_frags+0xe4/0x710 net/core/skbuff.c:6331
sock_alloc_send_pskb+0x7e4/0x970 net/core/sock.c:2780
unix_dgram_sendmsg+0x464/0x1ca0 net/unix/af_unix.c:1976
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xd5/0x180 net/socket.c:745
__sys_sendto+0x255/0x340 net/socket.c:2190
__do_sys_sendto net/socket.c:2202 [inline]
__se_sys_sendto net/socket.c:2198 [inline]
__x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fc8b4d1f9b5
Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fff1bc9b018 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc8b4d1f9b5
RDX: 000000000000008b RSI: 000055f978d454e0 RDI: 0000000000000003
RBP: 000055f978d3f2c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007fc8b4ead212 R14: 00007fff1bc9b118 R15: 0000000000000000
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.096 msecs