INFO: task syz.0.223:7318 blocked for more than 143 seconds.
Not tainted 6.10.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.223 state:D stack:18768 pid:7318 tgid:7317 ppid:6393 flags:0x00004006
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
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:791 [inline]
do_truncate+0x20c/0x310 fs/open.c:63
handle_truncate fs/namei.c:3308 [inline]
do_open fs/namei.c:3654 [inline]
path_openat+0x2a3d/0x3280 fs/namei.c:3807
do_filp_open+0x235/0x490 fs/namei.c:3834
do_sys_openat2+0x13e/0x1d0 fs/open.c:1405
do_sys_open fs/open.c:1420 [inline]
__do_sys_open fs/open.c:1428 [inline]
__se_sys_open fs/open.c:1424 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1424
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: 0033:0x7fda47575b99
RSP: 002b:00007fda483d5048 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fda47703fa0 RCX: 00007fda47575b99
RDX: 0000000000000000 RSI: 000000000014d27e RDI: 0000000020000180
RBP: 00007fda475f677e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fda47703fa0 R15: 00007ffdd486f2b8
INFO: task syz.0.223:7330 blocked for more than 144 seconds.
Not tainted 6.10.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.223 state:D stack:26832 pid:7330 tgid:7317 ppid:6393 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
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:791 [inline]
process_measurement+0x43c/0x1fb0 security/integrity/ima/ima_main.c:250
ima_file_check+0xf2/0x170 security/integrity/ima/ima_main.c:572
security_file_post_open+0x6d/0xa0 security/security.c:2982
do_open fs/namei.c:3652 [inline]
path_openat+0x28f6/0x3280 fs/namei.c:3807
do_filp_open+0x235/0x490 fs/namei.c:3834
do_sys_openat2+0x13e/0x1d0 fs/open.c:1405
do_sys_open fs/open.c:1420 [inline]
__do_sys_open fs/open.c:1428 [inline]
__se_sys_open fs/open.c:1424 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1424
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: 0033:0x7fda47575b99
RSP: 002b:00007fda48393048 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fda47704150 RCX: 00007fda47575b99
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 00007fda475f677e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fda47704150 R15: 00007ffdd486f2b8
Showing all locks held in the system:
3 locks held by kworker/0:0/8:
#0: ffff8880b943e758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9428948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffff8880b942a718 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x112/0x240 kernel/time/timer.c:1051
1 lock held by khungtaskd/31:
#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
2 locks held by kworker/u8:8/2480:
3 locks held by kworker/u8:9/2795:
#0: ffff88802a76d148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
#0: ffff88802a76d148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1: ffffc90009697d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc90009697d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2: ffffffff8f5d4c08 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
2 locks held by getty/4839:
#0: ffff88802ef910a0 (&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
2 locks held by syz.0.223/7318:
#0: ffff88805d1f2420 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff888065399020 (&sb->s_type->i_mutex_key#28){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
#1: ffff888065399020 (&sb->s_type->i_mutex_key#28){+.+.}-{3:3}, at: do_truncate+0x20c/0x310 fs/open.c:63
5 locks held by syz.0.223/7329:
#0: ffff88805d1f2420 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff888065399020 (&sb->s_type->i_mutex_key#28){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
#1: ffff888065399020 (&sb->s_type->i_mutex_key#28){+.+.}-{3:3}, at: do_truncate+0x20c/0x310 fs/open.c:63
#2: ffff88805a900ab8 (&c->snapshot_create_lock){.+.+}-{3:3}, at: bch2_truncate+0x16c/0x2c0 fs/bcachefs/io_misc.c:290
#3: ffff88805a9042d8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:116 [inline]
#3: ffff88805a9042d8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:215 [inline]
#3: ffff88805a9042d8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x840/0xce0 fs/bcachefs/btree_iter.c:3193
#4: ffff88805a926750 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x68d/0x1500 fs/bcachefs/btree_update_interior.c:1195
1 lock held by syz.0.223/7330:
#0: ffff888065399020 (&sb->s_type->i_mutex_key#28){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
#0: ffff888065399020 (&sb->s_type->i_mutex_key#28){+.+.}-{3:3}, at: process_measurement+0x43c/0x1fb0 security/integrity/ima/ima_main.c:250
1 lock held by bch-copygc/loop/7327:
3 locks held by syz-executor/8720:
#0: ffffffff8f5d4c08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f5d4c08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632
#1: ffff88804e7c9408 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x22d/0x420 drivers/net/wireguard/device.c:50
#2: ffffffff8e3392f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#2: ffffffff8e3392f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor/8810:
#0: ffffffff8f5d4c08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f5d4c08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632
2 locks held by syz.3.423/9133:
#0: ffff888066dd40e0 (&type->s_umount_key#31){++++}-{3:3}, at: do_remount fs/namespace.c:2889 [inline]
#0: ffff888066dd40e0 (&type->s_umount_key#31){++++}-{3:3}, at: path_mount+0xbdb/0xfa0 fs/namespace.c:3671
#1: ffff888066dd6b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_write fs/ext4/ext4.h:1784 [inline]
#1: ffff888066dd6b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: __ext4_remount fs/ext4/super.c:6684 [inline]
#1: ffff888066dd6b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_reconfigure+0x1a6b/0x3910 fs/ext4/super.c:6723
4 locks held by rm/9147:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 31 Comm: khungtaskd Not tainted 6.10.0-rc6-syzkaller #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9148 Comm: dhcpcd-run-hook Not tainted 6.10.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:lookup_page_ext mm/page_ext.c:253 [inline]
RIP: 0010:page_ext_get+0x18d/0x2a0 mm/page_ext.c:522
Code: b9 de 91 ff eb 05 e8 b2 de 91 ff 31 db 48 83 c3 10 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 86 4a f4 ff 4c 8b 3b ae b5 76 ff 89 c3 31 ff 89 c6 e8 c3 e2 91 ff 85 db 0f 84 ed 00
RSP: 0000:ffffc90002eef0f0 EFLAGS: 00000246
RAX: 1ffff11027fff20a RBX: ffff88813fff9050 RCX: ffff888023110000
RDX: 0000000000000000 RSI: 00000000004a1e00 RDI: 000000ffffffffc0
RBP: 0000000000000040 R08: ffffffff8204472e R09: 1ffffffff25ee2b0
R10: dffffc0000000000 R11: fffffbfff25ee2b1 R12: 0000000000012878
R13: 0000000000000001 R14: ffffffff82044660 R15: ffff888015700000
FS: 00007fefb6cc4380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560517028950 CR3: 0000000070576000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__set_page_owner+0x9e/0x800 mm/page_owner.c:322
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3425
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4683
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
vma_alloc_folio_noprof+0xf3/0x1f0 mm/mempolicy.c:2304
folio_prealloc+0x31/0x170
wp_page_copy mm/memory.c:3285 [inline]
do_wp_page+0x11cc/0x52f0 mm/memory.c:3677
handle_pte_fault+0x117e/0x7090 mm/memory.c:5397
__handle_mm_fault mm/memory.c:5524 [inline]
handle_mm_fault+0xfb0/0x19d0 mm/memory.c:5689
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fefb6f459cc
Code: 42 70 00 00 00 00 5b 5d 41 5c e9 25 f3 ff ff 48 83 3f 00 74 58 55 53 48 89 fb 52 48 8d 05 ac ea 07 00 48 8b 10 8b 42 40 ff c0 <89> 42 40 48 8d 05 92 ea 07 00 48 8b 28 48 8b 7d 00 48 3b 3b 74 0e
RSP: 002b:00007ffdf1a1c280 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 00007ffdf1a1c2f8 RCX: 00007fefb6e190a8
RDX: 0000560517028910 RSI: 0000000000000000 RDI: 00007ffdf1a1c2f8
RBP: 0000560517029b70 R08: 00000000000023bd R09: 0000000000000200
R10: 00007fefb6cc4650 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 0000560517037fdc R15: 0000000000000024