INFO: task syz.3.217:7110 blocked for more than 143 seconds.
Not tainted 6.10.0-rc7-syzkaller-00254-g528dd46d0fc3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.217 state:D stack:13816 pid:7110 tgid:7109 ppid:6630 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
io_schedule+0x8d/0x110 kernel/sched/core.c:9043
folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1307
bch2_mark_pagecache_unallocated+0x264/0x8e0 fs/bcachefs/fs-io-pagecache.c:295
bch2_remap_file_range+0x6b8/0xe90 fs/bcachefs/fs-io.c:900
vfs_copy_file_range+0xc1f/0x1530 fs/read_write.c:1522
__do_sys_copy_file_range fs/read_write.c:1612 [inline]
__se_sys_copy_file_range+0x3f2/0x5d0 fs/read_write.c:1575
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5fe2d75bd9
RSP: 002b:00007f5fe27ff048 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007f5fe2f03f60 RCX: 00007f5fe2d75bd9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007f5fe2de4e60 R08: ffffffffa003e459 R09: 0700000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5fe2f03f60 R15: 00007ffe62fc66a8
INFO: task syz.3.217:7121 blocked for more than 143 seconds.
Not tainted 6.10.0-rc7-syzkaller-00254-g528dd46d0fc3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.217 state:D stack:23024 pid:7121 tgid:7109 ppid:6630 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
__bch2_two_state_lock+0x171/0x200 fs/bcachefs/two_state_shared_lock.c:7
bch2_two_state_lock fs/bcachefs/two_state_shared_lock.h:56 [inline]
bch2_readahead+0xcad/0x1860 fs/bcachefs/fs-io-buffered.c:269
read_pages+0x17e/0x840 mm/readahead.c:160
page_cache_ra_order+0xa35/0xca0 mm/readahead.c:535
page_cache_sync_readahead include/linux/pagemap.h:1313 [inline]
filemap_get_pages+0x49d/0x2090 mm/filemap.c:2529
filemap_splice_read+0x654/0xeb0 mm/filemap.c:2894
do_splice_read fs/splice.c:985 [inline]
splice_direct_to_actor+0x4b7/0xc90 fs/splice.c:1089
do_splice_direct_actor fs/splice.c:1207 [inline]
do_splice_direct+0x28c/0x3e0 fs/splice.c:1233
vfs_copy_file_range+0xd37/0x1530 fs/read_write.c:1558
__do_sys_copy_file_range fs/read_write.c:1612 [inline]
__se_sys_copy_file_range+0x3f2/0x5d0 fs/read_write.c:1575
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5fe2d75bd9
RSP: 002b:00007f5fe27de048 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007f5fe2f04038 RCX: 00007f5fe2d75bd9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007f5fe2de4e60 R08: ffffffffa003e459 R09: 0700000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5fe2f04038 R15: 00007ffe62fc66a8
INFO: task syz.3.217:7123 blocked for more than 144 seconds.
Not tainted 6.10.0-rc7-syzkaller-00254-g528dd46d0fc3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.217 state:D stack:27392 pid:7123 tgid:7109 ppid:6630 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
__bch2_two_state_lock+0x171/0x200 fs/bcachefs/two_state_shared_lock.c:7
bch2_two_state_lock fs/bcachefs/two_state_shared_lock.h:56 [inline]
bch2_buffered_write fs/bcachefs/fs-io-buffered.c:1037 [inline]
bch2_write_iter+0x410/0x2840 fs/bcachefs/fs-io-buffered.c:1136
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5fe2d75bd9
RSP: 002b:00007f5fe27bd048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f5fe2f04110 RCX: 00007f5fe2d75bd9
RDX: 0000000000000011 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00007f5fe2de4e60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f5fe2f04110 R15: 00007ffe62fc66a8
Showing all locks held in the system:
3 locks held by kworker/0:0/8:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1: ffffc900000d7d00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc900000d7d00 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2: ffffffff8f5d82c8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
1 lock held by khungtaskd/30:
#0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:2/35:
#0: ffff888029edc948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
#0: ffff888029edc948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1: ffffc90000ab7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc90000ab7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2: ffffffff8f5d82c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
2 locks held by kworker/u8:7/2785:
#0: ffff8880b953e758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffffc90009cc7d00 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc90009cc7d00 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
4 locks held by kworker/u8:8/2814:
#0: ffff888015ed3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
#0: ffff888015ed3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1: ffffc90009e87d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc90009e87d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2: ffffffff8f5cba90 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffffffff8f5d82c8 (rtnl_mutex){+.+.}-{3:3}, at: cleanup_net+0x6af/0xcc0 net/core/net_namespace.c:630
2 locks held by dhcpcd/4747:
#0: ffff8880652d2678 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: netlink_dump+0xcb/0xe50 net/netlink/af_netlink.c:2277
#1: ffffffff8f5d82c8 (rtnl_mutex){+.+.}-{3:3}, at: netlink_dump+0x5d3/0xe50 net/netlink/af_netlink.c:2336
2 locks held by getty/4832:
#0: ffff88802a9560a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:4/5126:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1: ffffc900037dfd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc900037dfd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2: ffffffff8f5d82c8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
3 locks held by syz.3.217/7110:
#0: ffff888065742420 (sb_writers#15){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline]
#0: ffff888065742420 (sb_writers#15){.+.+}-{0:0}, at: vfs_copy_file_range+0x9e4/0x1530 fs/read_write.c:1510
#1: ffff88806128cb60 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
#1: ffff88806128cb60 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: lock_two_nondirectories+0xe1/0x170 fs/inode.c:1111
#2: ffff88806128da30 (&sb->s_type->i_mutex_key#22/4){+.+.}-{3:3}, at: bch2_remap_file_range+0x36f/0xe90 fs/bcachefs/fs-io.c:874
1 lock held by syz.3.217/7121:
#0: ffff88806128dbd0 (mapping.invalidate_lock#13){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:846 [inline]
#0: ffff88806128dbd0 (mapping.invalidate_lock#13){.+.+}-{3:3}, at: page_cache_ra_order+0x3c6/0xca0 mm/readahead.c:514
2 locks held by syz.3.217/7123:
#0: ffff88802fb24fc8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x310 fs/file.c:1191
#1: ffff888065742420 (sb_writers#15){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline]
#1: ffff888065742420 (sb_writers#15){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
1 lock held by syz-executor/8221:
#0: ffffffff8e3392f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#0: ffffffff8e3392f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor/8998:
#0: ffffffff8f5d82c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f5d82c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632
1 lock held by syz-executor/9262:
#0: ffffffff8f5d82c8 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3110
1 lock held by syz.1.549/9291:
#0: ffffffff8e3392f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#0: ffffffff8e3392f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:939
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc7-syzkaller-00254-g528dd46d0fc3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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:162 [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: 8221 Comm: syz-executor Not tainted 6.10.0-rc7-syzkaller-00254-g528dd46d0fc3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:stack_trace_consume_entry+0x9f/0x280 kernel/stacktrace.c:93
Code: 45 85 f6 74 22 41 ff ce 41 0f b6 44 15 00 84 c0 0f 85 69 01 00 00 44 89 37 b0 01 e9 95 00 00 00 31 c0 e9 8e 00 00 00 48 89 d8 <48> c1 e8 03 80 3c 10 00 74 26 4c 89 0c 24 48 89 df 49 89 f5 4d 89
RSP: 0018:ffffc900032cf4f0 EFLAGS: 00000246
RAX: ffffc900032cf620 RBX: ffffc900032cf620 RCX: ffff88802b9dda00
RDX: dffffc0000000000 RSI: ffffffff8b7daf79 RDI: ffffc900032cf62c
RBP: ffffc900032cf628 R08: 0000000000000009 R09: ffffc900032cf630
R10: 0000000000000003 R11: ffffffff8181dd10 R12: 1ffff92000659ec5
R13: 1ffff92000659ec5 R14: 0000000000000000 R15: 1ffff92000659ec6
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8027ebfd58 CR3: 000000000e132000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x143/0x1b0 arch/x86/kernel/stacktrace.c:27
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:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0xd19/0xea0 mm/page_alloc.c:2588
vfree+0x186/0x2e0 mm/vmalloc.c:3363
kcov_put kernel/kcov.c:429 [inline]
kcov_close+0x2b/0x50 kernel/kcov.c:525
__fput+0x24a/0x8a0 fs/file_table.c:422
task_work_run+0x24f/0x310 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa27/0x27e0 kernel/exit.c:876
do_group_exit+0x207/0x2c0 kernel/exit.c:1025
get_signal+0x16a1/0x1740 kernel/signal.c:2909
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+0xc9/0x360 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8417576f07
Code: Unable to access opcode bytes at 0x7f8417576edd.
RSP: 002b:00007ffc56374a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8417576f07
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc56374b40
RBP: 00007ffc56374b40 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc56375c30
R13: 00007f84175e3515 R14: 0000000000058a93 R15: 00000000000587da