INFO: task syz-executor.2:8017 blocked for more than 146 seconds.
Not tainted 6.3.0-rc2-syzkaller-00016-g4979bf866825 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:26712 pid:8017 ppid:5113 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x179d/0x4690 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757
rwsem_down_read_slowpath+0x5f4/0x950 kernel/locking/rwsem.c:1086
__down_read_common+0x61/0x2c0 kernel/locking/rwsem.c:1250
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
do_user_addr_fault arch/x86/mm/fault.c:1358 [inline]
handle_page_fault arch/x86/mm/fault.c:1498 [inline]
exc_page_fault+0x54c/0x890 arch/x86/mm/fault.c:1554
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7fb08ca2bd79
RSP: 002b:00007ffe0b626880 EFLAGS: 00010246
RAX: 0000000020002480 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055555738d2e8
RBP: 00007ffe0b626978 R08: 0000000000000000 R09: 0000000000000000
R10: 00007fb08c601c80 R11: 00000000000114d4 R12: 0000000000059099
R13: 00007ffe0b6269a0 R14: 00007ffe0b6269c0 R15: 0000000000000032
INFO: task syz-executor.2:8018 blocked for more than 150 seconds.
Not tainted 6.3.0-rc2-syzkaller-00016-g4979bf866825 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24504 pid:8018 ppid:5113 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x179d/0x4690 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
io_schedule+0x8c/0x100 kernel/sched/core.c:8884
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1301
folio_lock include/linux/pagemap.h:952 [inline]
write_cache_pages+0x570/0x1390 mm/page-writeback.c:2440
mpage_writepages+0x107/0x1d0 fs/mpage.c:653
do_writepages+0x3a6/0x670 mm/page-writeback.c:2551
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:390
__filemap_fdatawrite_range mm/filemap.c:423 [inline]
file_write_and_wait_range+0x20f/0x300 mm/filemap.c:781
__generic_file_fsync+0x72/0x190 fs/libfs.c:1132
generic_file_fsync+0x73/0xf0 fs/libfs.c:1173
generic_write_sync include/linux/fs.h:2452 [inline]
udf_file_write_iter+0x55b/0x660 fs/udf/file.c:126
call_write_iter include/linux/fs.h:1851 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7b2/0xbb0 fs/read_write.c:584
ksys_write+0x1a0/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb08ca8c0f9
RSP: 002b:00007fb08d84c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb08cbabf80 RCX: 00007fb08ca8c0f9
RDX: 000000000208e24b RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007fb08cae7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe0b62683f R14: 00007fb08d84c300 R15: 0000000000022000
INFO: task syz-executor.2:8030 blocked for more than 150 seconds.
Not tainted 6.3.0-rc2-syzkaller-00016-g4979bf866825 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:25784 pid:8030 ppid:5113 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x179d/0x4690 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
io_schedule+0x8c/0x100 kernel/sched/core.c:8884
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1301
folio_wait_writeback+0xec/0x1f0 mm/page-writeback.c:3127
migrate_folio_unmap mm/migrate.c:1198 [inline]
migrate_pages_batch mm/migrate.c:1691 [inline]
migrate_pages+0x2b60/0x61f0 mm/migrate.c:1979
do_mbind mm/mempolicy.c:1338 [inline]
kernel_mbind mm/mempolicy.c:1485 [inline]
__do_sys_mbind mm/mempolicy.c:1559 [inline]
__se_sys_mbind+0x75a/0x9c0 mm/mempolicy.c:1555
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb08ca8c0f9
RSP: 002b:00007fb08d82b168 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007fb08cbac050 RCX: 00007fb08ca8c0f9
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020001000
RBP: 00007fb08cae7b39 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe0b62683f R14: 00007fb08d82b300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf25f30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf26730 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8cf25d60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by kworker/u4:2/41:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x788/0x1280 kernel/workqueue.c:2363
#1: ffffc90000b27d20 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7d2/0x1280 kernel/workqueue.c:2365
3 locks held by kworker/u4:4/63:
#0: ffff88814500c138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x788/0x1280 kernel/workqueue.c:2363
#1: ffffc900015b7d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7d2/0x1280 kernel/workqueue.c:2365
#2: ffff8880308840e0 (&type->s_umount_key#74){++++}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:414
2 locks held by getty/4750:
#0: ffff888028654098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.3/5118:
#0: ffffffff8cf2b238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8cf2b238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:989
2 locks held by kworker/0:15/5862:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x788/0x1280 kernel/workqueue.c:2363
#1: ffffc900033efd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d2/0x1280 kernel/workqueue.c:2365
1 lock held by syz-executor.2/8017:
#0: ffff88801cf4e498 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88801cf4e498 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1358 [inline]
#0: ffff88801cf4e498 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1498 [inline]
#0: ffff88801cf4e498 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x54c/0x890 arch/x86/mm/fault.c:1554
2 locks held by syz-executor.2/8018:
#0: ffff888028339268 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x254/0x2f0 fs/file.c:1047
#1: ffff888030884460 (sb_writers#24){.+.+}-{0:0}, at: vfs_write+0x26d/0xbb0 fs/read_write.c:580
1 lock held by syz-executor.2/8030:
#0: ffff88801cf4e498 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline]
#0: ffff88801cf4e498 (&mm->mmap_lock){++++}-{3:3}, at: do_mbind mm/mempolicy.c:1312 [inline]
#0: ffff88801cf4e498 (&mm->mmap_lock){++++}-{3:3}, at: kernel_mbind mm/mempolicy.c:1485 [inline]
#0: ffff88801cf4e498 (&mm->mmap_lock){++++}-{3:3}, at: __do_sys_mbind mm/mempolicy.c:1559 [inline]
#0: ffff88801cf4e498 (&mm->mmap_lock){++++}-{3:3}, at: __se_sys_mbind+0x47d/0x9c0 mm/mempolicy.c:1555
2 locks held by syz-executor.4/9396:
#0: ffff8880173f6aa8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nf_tables_valid_genid+0x2b/0xb0 net/netfilter/nf_tables_api.c:9557
#1: ffffffff8cf2b238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#1: ffffffff8cf2b238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:989
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc2-syzkaller-00016-g4979bf866825 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 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+0xf9d/0xfe0 kernel/hung_task.c:379
kthread+0x270/0x300 kernel/kthread.c:376
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: 4423 Comm: klogd Not tainted 6.3.0-rc2-syzkaller-00016-g4979bf866825 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:__lock_acquire+0x1e/0x1f80 kernel/locking/lockdep.c:4914
Code: 76 76 00 eb 89 0f 1f 80 00 00 00 00 55 41 57 41 56 41 55 41 54 53 48 81 ec 88 00 00 00 44 89 cb 45 89 c7 41 89 cc 89 54 24 50 <89> f5 49 89 fe 65 4c 8b 2d 25 f0 98 7e 48 c7 c0 e4 37 54 8e 48 c1
RSP: 0018:ffffc9000311f460 EFLAGS: 00000086
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880b9945b30
RBP: ffffc9000311f698 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000001
FS: 00007fa8bf6e8800(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb83148000 CR3: 000000002a983000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x223/0x5b0 kernel/locking/lockdep.c:5669
local_lock_acquire+0x21/0x70 include/linux/local_lock_internal.h:29
___slab_alloc+0x37e/0x10a0 mm/slub.c:3165
__slab_alloc mm/slub.c:3292 [inline]
__slab_alloc_node mm/slub.c:3345 [inline]
slab_alloc_node mm/slub.c:3442 [inline]
kmem_cache_alloc_node+0x1dc/0x2b0 mm/slub.c:3497
__alloc_skb+0x181/0x420 net/core/skbuff.c:596
alloc_skb include/linux/skbuff.h:1277 [inline]
alloc_skb_with_frags+0xa8/0x750 net/core/skbuff.c:6318
sock_alloc_send_pskb+0x919/0xa50 net/core/sock.c:2734
unix_dgram_sendmsg+0x5b5/0x2050 net/unix/af_unix.c:1944
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg net/socket.c:747 [inline]
__sys_sendto+0x475/0x630 net/socket.c:2142
__do_sys_sendto net/socket.c:2154 [inline]
__se_sys_sendto net/socket.c:2150 [inline]
__x64_sys_sendto+0xde/0xf0 net/socket.c:2150
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa8bf8840ac
Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10
RSP: 002b:00007ffde87f8fe8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa8bf8840ac
RDX: 0000000000000047 RSI: 000055b6874669c0 RDI: 0000000000000003
RBP: 000055b68745f910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000001 R14: 00007fa8bf9ff77d R15: 00007ffde87f90f8