INFO: task syz-executor181:5022 blocked for more than 143 seconds.
Not tainted 6.4.0-rc4-syzkaller-00051-g48b1320a674e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor181 state:D stack:28232 pid:5022 ppid:4998 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d2/0x200 kernel/locking/rwsem.c:1574
filemap_invalidate_lock include/linux/fs.h:820 [inline]
blkdev_fallocate+0x1e8/0x420 block/fops.c:649
vfs_fallocate+0x48b/0xe40 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xd3/0x140 fs/open.c:353
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: 0033:0x7fd86e4dee29
RSP: 002b:00007ffdefbd91a8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fd86e4dee29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0008000001002000 R11: 0000000000000246 R12: 000000000000a47a
R13: 00007ffdefbd91bc R14: 00007ffdefbd91d0 R15: 00007ffdefbd91c0
INFO: task syz-executor181:5027 blocked for more than 143 seconds.
Not tainted 6.4.0-rc4-syzkaller-00051-g48b1320a674e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor181 state:D stack:27280 pid:5027 ppid:4999 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d2/0x200 kernel/locking/rwsem.c:1574
filemap_invalidate_lock include/linux/fs.h:820 [inline]
blkdev_fallocate+0x1e8/0x420 block/fops.c:649
vfs_fallocate+0x48b/0xe40 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xd3/0x140 fs/open.c:353
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: 0033:0x7fd86e4dee29
RSP: 002b:00007ffdefbd91a8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fd86e4dee29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0008000001002000 R11: 0000000000000246 R12: 000000000000a47d
R13: 00007ffdefbd91bc R14: 00007ffdefbd91d0 R15: 00007ffdefbd91c0
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c7984b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c7981b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0: ffffffff8c7990c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6559
2 locks held by getty/4752:
#0: ffff88814a852098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2176
1 lock held by syz-executor181/5009:
1 lock held by syz-executor181/5022:
#0: ffff88801a91f6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline]
#0: ffff88801a91f6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e8/0x420 block/fops.c:649
1 lock held by syz-executor181/5027:
#0: ffff88801a91f6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline]
#0: ffff88801a91f6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e8/0x420 block/fops.c:649
1 lock held by syz-executor181/5028:
#0: ffff88801a91f6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline]
#0: ffff88801a91f6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e8/0x420 block/fops.c:649
1 lock held by syz-executor181/5035:
#0: ffff88801a91f6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline]
#0: ffff88801a91f6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e8/0x420 block/fops.c:649
1 lock held by syz-executor181/5036:
#0: ffff88801a91f6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline]
#0: ffff88801a91f6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e8/0x420 block/fops.c:649
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc4-syzkaller-00051-g48b1320a674e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
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:148 [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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4442 Comm: klogd Not tainted 6.4.0-rc4-syzkaller-00051-g48b1320a674e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:mark_lock.part.0+0x33/0x1970 kernel/locking/lockdep.c:4615
Code: 48 ba 00 00 00 00 00 fc ff df 41 54 49 89 f4 55 53 48 81 ec 38 01 00 00 48 8d 5c 24 38 48 89 3c 24 48 c7 44 24 38 b3 8a b5 41 <48> c1 eb 03 48 c7 44 24 40 f8 15 f0 8b 48 8d 04 13 48 c7 44 24 48
RSP: 0018:ffffc9000318f2d8 EFLAGS: 00000096
RAX: 000000000000000c RBX: ffffc9000318f310 RCX: ffff88807df00aac
RDX: dffffc0000000000 RSI: ffff88807df00af0 RDI: ffff88807df00000
RBP: ffff88807df00000 R08: 0000000000000000 R09: ffffffff91528d2f
R10: fffffbfff22a51a5 R11: 0000000000094001 R12: ffff88807df00af0
R13: 0000000000000008 R14: 0000000000000004 R15: ffff88807df00af0
FS: 00007f89d328a380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd86e54f130 CR3: 000000002cdcd000 CR4: 0000000000350ef0
Call Trace:
mark_lock kernel/locking/lockdep.c:4620 [inline]
mark_usage kernel/locking/lockdep.c:4577 [inline]
__lock_acquire+0x907/0x5f30 kernel/locking/lockdep.c:5042
lock_acquire kernel/locking/lockdep.c:5705 [inline]
lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5670
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3d/0x60 kernel/locking/spinlock.c:162
__debug_check_no_obj_freed lib/debugobjects.c:1011 [inline]
debug_check_no_obj_freed+0xcb/0x420 lib/debugobjects.c:1054
free_pages_prepare mm/page_alloc.c:1308 [inline]
free_unref_page_prepare+0x202/0xcb0 mm/page_alloc.c:2564
free_unref_page+0x33/0x370 mm/page_alloc.c:2659
qlink_free mm/kasan/quarantine.c:166 [inline]
qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185
kasan_quarantine_reduce+0x195/0x220 mm/kasan/quarantine.c:292
__kasan_slab_alloc+0x63/0x90 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:186 [inline]
slab_post_alloc_hook mm/slab.h:711 [inline]
slab_alloc_node mm/slub.c:3451 [inline]
kmem_cache_alloc_node+0x185/0x3e0 mm/slub.c:3496
__alloc_skb+0x288/0x330 net/core/skbuff.c:644
alloc_skb include/linux/skbuff.h:1288 [inline]
alloc_skb_with_frags+0x9a/0x6c0 net/core/skbuff.c:6380
sock_alloc_send_pskb+0x7a7/0x930 net/core/sock.c:2729
unix_dgram_sendmsg+0x41b/0x1950 net/unix/af_unix.c:1944
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg+0xde/0x190 net/socket.c:747
__sys_sendto+0x23a/0x340 net/socket.c:2144
__do_sys_sendto net/socket.c:2156 [inline]
__se_sys_sendto net/socket.c:2152 [inline]
__x64_sys_sendto+0xe1/0x1b0 net/socket.c:2152
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: 0033:0x7f89d33ec9b5
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:00007ffc7617f538 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f89d33ec9b5
RDX: 000000000000004c RSI: 000055fa7fd99a40 RDI: 0000000000000003
RBP: 000055fa7fd95910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007f89d357a212 R14: 00007ffc7617f638 R15: 0000000000000000
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.330 msecs