INFO: task kworker/0:10:8998 blocked for more than 143 seconds.
Not tainted 6.9.0-rc4-next-20240418-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:10 state:D stack:23792 pid:8998 tgid:8998 ppid:2 flags:0x00004000
Workqueue: xfs-sync/loop2 xfs_flush_inodes_worker
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
wb_wait_for_completion+0x166/0x290 fs/fs-writeback.c:216
sync_inodes_sb+0x293/0xb20 fs/fs-writeback.c:2792
xfs_flush_inodes_worker+0x61/0x80 fs/xfs/xfs_super.c:616
process_one_work kernel/workqueue.c:3218 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3299
worker_thread+0x86d/0xd70 kernel/workqueue.c:3380
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz-executor.2:10143 blocked for more than 144 seconds.
Not tainted 6.9.0-rc4-next-20240418-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:21944 pid:10143 tgid:10143 ppid:9727 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
coredump_task_exit kernel/exit.c:438 [inline]
do_exit+0x56f/0x27e0 kernel/exit.c:831
do_group_exit+0x207/0x2c0 kernel/exit.c:1026
get_signal+0x16a1/0x1740 kernel/signal.c:2911
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f942367dea9
RSP: 002b:00007ffd77822f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 0000000000000032 RCX: 00007f942367dea9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f94237abf8c
RBP: 00007f94237abf8c R08: 7fffffffffffffff R09: 00007ffd77822f80
R10: 00007ffd778230e0 R11: 0000000000000246 R12: 00000000000471be
R13: 000000000004718c R14: 00007ffd77823100 R15: 00007f9423634cb0
INFO: task syz-executor.2:10145 blocked for more than 144 seconds.
Not tainted 6.9.0-rc4-next-20240418-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:22160 pid:10145 tgid:10143 ppid:9727 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2557
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
__flush_work+0xaa9/0xd00 kernel/workqueue.c:4198
xfs_file_buffered_write+0x36b/0xad0 fs/xfs/xfs_file.c:808
__kernel_write_iter+0x40d/0x900 fs/read_write.c:523
dump_emit_page fs/coredump.c:890 [inline]
dump_user_range+0x4e0/0x950 fs/coredump.c:951
elf_core_dump+0x3d65/0x4640 fs/binfmt_elf.c:2077
do_coredump+0x1bac/0x2b50 fs/coredump.c:764
get_signal+0x13fa/0x1740 kernel/signal.c:2896
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f942367dea9
RSP: 002b:00007f94231ff0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffe5 RBX: 00007f94237abf80 RCX: 00007f942367dea9
RDX: 0000000000000000 RSI: 400000000000c17a RDI: 0000000000000004
RBP: 00007f94236ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f94237abf80 R15: 00007ffd77822e78
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffffffff8e338f38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#0: ffffffff8e338f38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:939
4 locks held by kworker/u8:1/12:
#0: ffff88801b28d948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3193 [inline]
#0: ffff88801b28d948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3299
#1: ffffc90000117d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3194 [inline]
#1: ffffc90000117d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3299
#2: ffff888054430610 (sb_internal#3){.+.+}-{0:0}, at: xfs_bmapi_convert_delalloc+0x267/0x1330 fs/xfs/libxfs/xfs_bmap.c:4625
#3: ffff88807e26ed98 (&xfs_nondir_ilock_class#3){++++}-{3:3}, at: xfs_bmapi_convert_delalloc+0x295/0x1330 fs/xfs/libxfs/xfs_bmap.c:4630
1 lock held by khungtaskd/30:
#0:
ffffffff8e333b60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
ffffffff8e333b60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
ffffffff8e333b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:3/51:
#0: ffff888029d66148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3193 [inline]
#0: ffff888029d66148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3299
#1:
ffffc90000bb7d00
((work_completion)(&(&ifa->dad_work)->work)
){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3194 [inline]
){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3299
#2: ffffffff8f5d43c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
1 lock held by dhcpcd/4757:
#0: ffffffff8f5d43c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f5d43c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6591
2 locks held by getty/4846:
#0: ffff88801ddd80a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
6 locks held by kworker/0:7/5164:
3 locks held by kworker/1:5/5167:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3193 [inline]
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3299
#1: ffffc9000421fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3194 [inline]
#1: ffffc9000421fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3299
#2: ffffffff8f5d43c8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
4 locks held by kworker/0:10/8998:
#0: ffff888024cfc148 ((wq_completion)xfs-sync/loop2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3193 [inline]
#0: ffff888024cfc148 ((wq_completion)xfs-sync/loop2){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3299
#1: ffffc90004a0fd00 ((work_completion)(&mp->m_flush_inodes_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3194 [inline]
#1: ffffc90004a0fd00 ((work_completion)(&mp->m_flush_inodes_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3299
#2: ffff8880544300e0 (&type->s_umount_key#62){++++}-{3:3}, at: xfs_flush_inodes_worker+0x45/0x80 fs/xfs/xfs_super.c:615
#3: ffff88801fee27d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
#3: ffff88801fee27d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
2 locks held by syz-executor.2/10145:
#0: ffff888054430420 (sb_writers#16){.+.+}-{0:0}, at: do_coredump+0x1b7a/0x2b50 fs/coredump.c:763
#1: ffff88807e26efb8 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: xfs_ilock+0x102/0x3d0 fs/xfs/xfs_inode.c:190
3 locks held by kworker/u8:9/10218:
2 locks held by syz-executor.4/11072:
#0: ffff8880544300e0
(&type->s_umount_key#62){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
(&type->s_umount_key#62){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff88801fee27d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
#1: ffff88801fee27d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
5 locks held by kworker/u8:11/11475:
#0: ffff888015ed5948 ((wq_completion)netns){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3193 [inline]
, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3299
#1: ffffc90018f17d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3194 [inline]
#1: ffffc90018f17d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3299
#2: ffffffff8f5c7c50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:591
#3: ffffffff8f5d43c8 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe9/0xa90 net/core/dev.c:11701
#4: ffffffff8e338f38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#4: ffffffff8e338f38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:939
2 locks held by syz-executor.4/11675:
1 lock held by syz-executor.0/11759:
#0: ffffffff8f5d43c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f5d43c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6591
1 lock held by syz-executor.2/11845:
#0: ffffffff8f5d43c8 (rtnl_mutex){+.+.}-{3:3}, at: packet_mc_add+0x28/0x950 net/packet/af_packet.c:3671
2 locks held by syz-executor.4/11847:
2 locks held by syz-executor.3/11852:
#0: ffffffff8f639d50 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8f5d43c8 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0x5f/0x8b0 net/wireless/nl80211.c:16401
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.9.0-rc4-next-20240418-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11675 Comm: syz-executor.4 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:unwind_next_frame+0x180/0x2a00 arch/x86/kernel/unwind_orc.c:494
Code: 8d 55 35 48 89 d0 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df 48 89 44 24 78 42 0f b6 04 30 84 c0 48 8b 5c 24 20 48 89 54 24 10 <0f> 85 f6 1f 00 00 48 0f be 2a 48 8b 44 24 30 42 80 3c 30 00 74 08
RSP: 0018:ffffc90012a06ea8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90012a06fc8 RCX: ffff88802d49da00
RDX: ffffc90012a06fb5 RSI: 0000000000000001 RDI: ffffffff8140e0e1
RBP: ffffc90012a06f80 R08: ffffffff8140e0c1 R09: ffffc90012a07070
R10: 0000000000000003 R11: ffffffff81822da0 R12: ffffc90012a06f80
R13: ffffc90012a06fd0 R14: dffffc0000000000 R15: ffffffff81e89be4
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555796b938 CR3: 000000007c43c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x75/0x3f0 mm/page_owner.c:302
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1096 [inline]
free_unref_folios+0xf23/0x19e0 mm/page_alloc.c:2658
folios_put_refs+0x93a/0xa60 mm/swap.c:1022
free_pages_and_swap_cache+0x2ea/0x690 mm/swap_state.c:329
__tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline]
tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:366 [inline]
tlb_flush_mmu+0x3a3/0x680 mm/mmu_gather.c:373
tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:465
exit_mmap+0x44f/0xc80 mm/mmap.c:3354
__mmput+0x115/0x3c0 kernel/fork.c:1346
exit_mm+0x220/0x310 kernel/exit.c:568
do_exit+0x99e/0x27e0 kernel/exit.c:864
do_group_exit+0x207/0x2c0 kernel/exit.c:1026
get_signal+0x16a1/0x1740 kernel/signal.c:2911
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
irqentry_exit_to_user_mode+0x79/0x280 kernel/entry/common.c:231
exc_page_fault+0x59e/0x900 arch/x86/mm/fault.c:1573
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7feb51a7deb1
Code: Unable to access opcode bytes at 0x7feb51a7de87.
RSP: 002b:fffffffffffffe90 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007feb51babf80 RCX: 00007feb51a7dea9
RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000
RBP: 00007feb51aca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007feb51babf80 R15: 00007ffc62d8e488
vkms_vblank_simulate: vblank timer overrun