INFO: task syz-executor161:5047 blocked for more than 143 seconds.
Not tainted 6.6.0-rc6-syzkaller-00029-g213f891525c2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor161 state:D stack:28160 pid:5047 ppid:5045 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x5a10 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
rwsem_down_write_slowpath+0x53d/0x12a0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d3/0x200 kernel/locking/rwsem.c:1574
filemap_invalidate_lock include/linux/fs.h:847 [inline]
blkdev_fallocate+0x1e9/0x450 block/fops.c:773
vfs_fallocate+0x46c/0xe80 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+0xd5/0x140 fs/open.c:353
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc39f6a0b29
RSP: 002b:00007ffdda0030b8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc39f6a0b29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 7fffffffffffffff R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdda0032d8 R14: 00007ffdda0030e0 R15: 00007ffdda0030d0
INFO: task syz-executor161:5048 blocked for more than 143 seconds.
Not tainted 6.6.0-rc6-syzkaller-00029-g213f891525c2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor161 state:D stack:28160 pid:5048 ppid:5046 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x5a10 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
rwsem_down_write_slowpath+0x53d/0x12a0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d3/0x200 kernel/locking/rwsem.c:1574
filemap_invalidate_lock include/linux/fs.h:847 [inline]
blkdev_fallocate+0x1e9/0x450 block/fops.c:773
vfs_fallocate+0x46c/0xe80 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+0xd5/0x140 fs/open.c:353
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc39f6a0b29
RSP: 002b:00007ffdda0030b8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc39f6a0b29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 7fffffffffffffff R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdda0032d8 R14: 00007ffdda0030e0 R15: 00007ffdda0030d0
INFO: task syz-executor161:5065 blocked for more than 143 seconds.
Not tainted 6.6.0-rc6-syzkaller-00029-g213f891525c2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor161 state:D stack:27520 pid:5065 ppid:5037 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x5a10 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
rwsem_down_write_slowpath+0x53d/0x12a0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d3/0x200 kernel/locking/rwsem.c:1574
filemap_invalidate_lock include/linux/fs.h:847 [inline]
blkdev_fallocate+0x1e9/0x450 block/fops.c:773
vfs_fallocate+0x46c/0xe80 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+0xd5/0x140 fs/open.c:353
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc39f6a0b29
RSP: 002b:00007ffdda0030b8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc39f6a0b29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 7fffffffffffffff R11: 0000000000000246 R12: 000000000000d58c
R13: 00007ffdda0030cc R14: 00007ffdda0030e0 R15: 00007ffdda0030d0
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
2 locks held by klogd/4480:
2 locks held by getty/4788:
#0: ffff88802a0c20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc5/0x1480 drivers/tty/n_tty.c:2206
1 lock held by syz-executor161/5042:
1 lock held by syz-executor161/5047:
#0: ffff888148890940 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff888148890940 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e9/0x450 block/fops.c:773
1 lock held by syz-executor161/5048:
#0: ffff888148890940 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff888148890940 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e9/0x450 block/fops.c:773
1 lock held by syz-executor161/5065:
#0: ffff888148890940 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff888148890940 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e9/0x450 block/fops.c:773
1 lock held by syz-executor161/5066:
#0: ffff888148890940 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff888148890940 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e9/0x450 block/fops.c:773
1 lock held by syz-executor161/5073:
#0: ffff888148890940 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff888148890940 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e9/0x450 block/fops.c:773
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc6-syzkaller-00029-g213f891525c2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 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+0x33c/0x440 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:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4480 Comm: klogd Not tainted 6.6.0-rc6-syzkaller-00029-g213f891525c2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4797 [inline]
RIP: 0010:__lock_acquire+0x794/0x5de0 kernel/locking/lockdep.c:5086
Code: 20 66 81 e2 ff 1f 0f b7 da be 08 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 80 ee 9e 91 e8 14 5e 75 00 48 0f a3 1d 7c c3 36 10 <0f> 82 12 ff ff ff 48 8b 44 24 48 0f b6 10 48 c7 c0 e0 d5 2d 92 83
RSP: 0018:ffffc90003147348 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 0000000000000179 RCX: ffffffff81682afc
RDX: fffffbfff233ddd6 RSI: 0000000000000008 RDI: ffffffff919eeea8
RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff233ddd5
R10: ffffffff919eeeaf R11: dffffc0000000000 R12: ffffed100fc84c80
R13: 0000000000000000 R14: ffff88807e425940 R15: 0000000000000004
FS: 00007f0869267380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001008 CR3: 000000007ee52000 CR4: 0000000000350ee0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5753 [inline]
lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5718
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
__debug_check_no_obj_freed lib/debugobjects.c:1020 [inline]
debug_check_no_obj_freed+0xe1/0x4c0 lib/debugobjects.c:1063
free_pages_prepare mm/page_alloc.c:1142 [inline]
free_unref_page_prepare+0x1e5/0xa40 mm/page_alloc.c:2312
free_unref_page+0x33/0x3b0 mm/page_alloc.c:2405
__unfreeze_partials+0x21d/0x240 mm/slub.c:2655
qlink_free mm/kasan/quarantine.c:166 [inline]
qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:292
____kasan_kmalloc mm/kasan/common.c:340 [inline]
__kasan_kmalloc+0x86/0xb0 mm/kasan/common.c:383
kasan_kmalloc include/linux/kasan.h:198 [inline]
__do_kmalloc_node mm/slab_common.c:1023 [inline]
__kmalloc_node_track_caller+0x61/0x100 mm/slab_common.c:1043
kmalloc_reserve+0xef/0x260 net/core/skbuff.c:581
__alloc_skb+0x12b/0x330 net/core/skbuff.c:650
alloc_skb include/linux/skbuff.h:1286 [inline]
alloc_skb_with_frags+0xe4/0x710 net/core/skbuff.c:6313
sock_alloc_send_pskb+0x7e4/0x970 net/core/sock.c:2795
unix_dgram_sendmsg+0x455/0x1c30 net/unix/af_unix.c:1953
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xd5/0x180 net/socket.c:745
__sys_sendto+0x255/0x340 net/socket.c:2194
__do_sys_sendto net/socket.c:2206 [inline]
__se_sys_sendto net/socket.c:2202 [inline]
__x64_sys_sendto+0xe0/0x1b0 net/socket.c:2202
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f08693c99b5
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:00007ffed9ae05b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f08693c99b5
RDX: 0000000000000039 RSI: 0000565273ffbb00 RDI: 0000000000000003
RBP: 0000565273ff7910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007f0869557212 R14: 00007ffed9ae06b8 R15: 0000000000000000
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.239 msecs