INFO: task syz.4.5:5387 blocked for more than 143 seconds. Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.5 state:D stack:27392 pid:5387 tgid:5332 ppid:5230 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580 inode_lock include/linux/fs.h:815 [inline] do_lock_mount+0x112/0x3a0 fs/namespace.c:2607 lock_mount fs/namespace.c:2649 [inline] do_loopback+0x2be/0x520 fs/namespace.c:2772 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4055 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4032 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: 0033:0x7f4a43b7def9 RSP: 002b:00007f4a448b1038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f4a43d36058 RCX: 00007f4a43b7def9 RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000020000380 RBP: 00007f4a43bf0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f4a43d36058 R15: 00007fff18ed70d8 INFO: task syz.4.5:5388 blocked for more than 144 seconds. Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.5 state:D stack:26896 pid:5388 tgid:5332 ppid:5230 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580 inode_lock include/linux/fs.h:815 [inline] process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250 ima_file_check+0xf2/0x170 security/integrity/ima/ima_main.c:572 security_file_post_open+0xb9/0x280 security/security.c:3127 do_open fs/namei.c:3776 [inline] path_openat+0x2ccd/0x3590 fs/namei.c:3933 do_filp_open+0x235/0x490 fs/namei.c:3960 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_open fs/open.c:1438 [inline] __se_sys_open fs/open.c:1434 [inline] __x64_sys_open+0x225/0x270 fs/open.c:1434 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: 0033:0x7f4a43b7def9 RSP: 002b:00007f4a44890038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f4a43d36130 RCX: 00007f4a43b7def9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200005c0 RBP: 00007f4a43bf0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f4a43d36130 R15: 00007fff18ed70d8 INFO: task syz.4.5:5390 blocked for more than 145 seconds. Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.5 state:D stack:21184 pid:5390 tgid:5332 ppid:5230 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580 inode_lock include/linux/fs.h:815 [inline] process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250 ima_file_check+0xf2/0x170 security/integrity/ima/ima_main.c:572 security_file_post_open+0xb9/0x280 security/security.c:3127 do_open fs/namei.c:3776 [inline] path_openat+0x2ccd/0x3590 fs/namei.c:3933 do_filp_open+0x235/0x490 fs/namei.c:3960 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_creat fs/open.c:1506 [inline] __se_sys_creat fs/open.c:1500 [inline] __x64_sys_creat+0x123/0x170 fs/open.c:1500 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: 0033:0x7f4a43b7def9 RSP: 002b:00007f4a435ff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f4a43d36208 RCX: 00007f4a43b7def9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000340 RBP: 00007f4a43bf0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f4a43d36208 R15: 00007fff18ed70d8 INFO: task syz.0.29:5443 blocked for more than 145 seconds. Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.29 state:D stack:22848 pid:5443 tgid:5442 ppid:5219 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580 bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 iterate_supers+0xc6/0x190 fs/super.c:934 ksys_sync+0xbd/0x1c0 fs/sync.c:102 __do_sys_sync+0xe/0x20 fs/sync.c:113 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: 0033:0x7f8f19b7def9 RSP: 002b:00007f8f1aa07038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007f8f19d35f80 RCX: 00007f8f19b7def9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f8f19bf0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8f19d35f80 R15: 00007fff4665baa8 INFO: task syz.0.29:5445 blocked for more than 146 seconds. Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.29 state:D stack:27392 pid:5445 tgid:5442 ppid:5219 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 wb_wait_for_completion+0x166/0x290 fs/fs-writeback.c:216 sync_inodes_sb+0x293/0xb40 fs/fs-writeback.c:2799 iterate_supers+0xc6/0x190 fs/super.c:934 ksys_sync+0xbd/0x1c0 fs/sync.c:102 __do_sys_sync+0xe/0x20 fs/sync.c:113 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: 0033:0x7f8f19b7def9 RSP: 002b:00007f8f1a9e6038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007f8f19d36058 RCX: 00007f8f19b7def9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f8f19bf0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8f19d36058 R15: 00007fff4665baa8 INFO: task syz.0.29:5446 blocked for more than 146 seconds. Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.29 state:D stack:27392 pid:5446 tgid:5442 ppid:5219 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580 bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 iterate_supers+0xc6/0x190 fs/super.c:934 ksys_sync+0xbd/0x1c0 fs/sync.c:102 __do_sys_sync+0xe/0x20 fs/sync.c:113 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: 0033:0x7f8f19b7def9 RSP: 002b:00007f8f1a9c5038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007f8f19d36130 RCX: 00007f8f19b7def9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f8f19bf0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f8f19d36130 R15: 00007fff4665baa8 INFO: task syz.0.29:5447 blocked for more than 147 seconds. Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.29 state:D stack:27392 pid:5447 tgid:5442 ppid:5219 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580 bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 iterate_supers+0xc6/0x190 fs/super.c:934 ksys_sync+0xbd/0x1c0 fs/sync.c:102 __do_sys_sync+0xe/0x20 fs/sync.c:113 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: 0033:0x7f8f19b7def9 RSP: 002b:00007f8f1a9a4038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007f8f19d36208 RCX: 00007f8f19b7def9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f8f19bf0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8f19d36208 R15: 00007fff4665baa8 INFO: task syz.0.29:5450 blocked for more than 147 seconds. Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.29 state:D stack:27392 pid:5450 tgid:5442 ppid:5219 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580 bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 iterate_supers+0xc6/0x190 fs/super.c:934 ksys_sync+0xbd/0x1c0 fs/sync.c:102 __do_sys_sync+0xe/0x20 fs/sync.c:113 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: 0033:0x7f8f19b7def9 RSP: 002b:00007f8f1a983038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007f8f19d362e0 RCX: 00007f8f19b7def9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f8f19bf0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f8f19d362e0 R15: 00007fff4665baa8 Showing all locks held in the system: 1 lock held by pool_workqueue_/3: #0: ffffffff8e73de38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #0: ffffffff8e73de38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:965 3 locks held by kworker/0:0/8: #0: ffff88801a880948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff88801a880948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc900000d7d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc900000d7d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffff888062324240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2d1/0x4130 drivers/net/netdevsim/fib.c:1489 1 lock held by khungtaskd/30: #0: ffffffff8e738a60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] #0: ffffffff8e738a60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] #0: ffffffff8e738a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6701 5 locks held by kworker/u8:6/1064: 2 locks held by kworker/u8:8/1116: 3 locks held by kworker/u8:11/2985: #0: ffff88801a889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff88801a889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90009e5fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90009e5fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276 3 locks held by kworker/u8:14/3043: #0: ffff8880206fa148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff8880206fa148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc9000a24fd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc9000a24fd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562 2 locks held by dhcpcd/4890: #0: ffff88803315a6c8 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: __netlink_dump_start+0x119/0x790 net/netlink/af_netlink.c:2404 #1: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #1: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_dumpit+0x99/0x200 net/core/rtnetlink.c:6505 2 locks held by getty/4977: #0: ffff88803030e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000311b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 5 locks held by syz.4.5/5333: #0: ffff88805ef66420 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff8880557a8148 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff8880557a8148 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: do_truncate+0x20c/0x310 fs/open.c:63 #2: ffff88805ed80a18 (&c->snapshot_create_lock){.+.+}-{3:3}, at: bch2_truncate+0x16c/0x2c0 fs/bcachefs/io_misc.c:290 #3: ffff88805ed842c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:151 [inline] #3: ffff88805ed842c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:250 [inline] #3: ffff88805ed842c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7de/0xd20 fs/bcachefs/btree_iter.c:3200 #4: ffff88805eda6690 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1197 1 lock held by syz.4.5/5387: #0: ffff8880557a8148 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #0: ffff8880557a8148 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: do_lock_mount+0x112/0x3a0 fs/namespace.c:2607 1 lock held by syz.4.5/5388: #0: ffff8880557a8148 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #0: ffff8880557a8148 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250 2 locks held by syz.4.5/5390: #0: ffff88805ef66420 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff8880557a8148 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #1: ffff8880557a8148 (&sb->s_type->i_mutex_key#23){+.+.}-{3:3}, at: process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250 5 locks held by bch-reclaim/loo/5366: 2 locks held by syz.0.29/5443: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.0.29/5445: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.0.29/5446: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.0.29/5447: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.0.29/5450: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.0.81/5910: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.0.81/5915: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.0.81/5916: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.0.81/5918: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.0.81/5920: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 1 lock held by syz-executor/6029: #0: ffffffff8e73dd00 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:4486 2 locks held by syz.4.178/6645: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.4.178/6646: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.4.178/6647: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.4.178/6648: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 2 locks held by syz.4.178/6649: #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff88805ef660e0 (&type->s_umount_key#82){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff88803085e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797 1 lock held by syz-executor/6828: #0: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517 1 lock held by syz-executor/7015: #0: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517 1 lock held by syz.4.238/7157: #0: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517 2 locks held by syz.3.239/7164: #0: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8fab0488 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517 #1: ffffffff8e73de38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #1: ffffffff8e73de38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:965 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 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+0xff4/0x1040 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 UID: 0 PID: 1064 Comm: kworker/u8:6 Not tainted 6.11.0-syzkaller-04557-g2f27fce67173 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: bat_events batadv_nc_worker RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:87 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:123 [inline] RIP: 0010:lock_is_held_type+0x67/0x190 kernel/locking/lockdep.c:5890 Code: f1 00 00 00 65 4c 8b 2c 25 40 d4 03 00 41 83 bd dc 0a 00 00 00 0f 85 da 00 00 00 41 89 f6 49 89 ff 48 c7 04 24 00 00 00 00 9c <8f> 04 24 4c 8b 24 24 fa 48 c7 c7 c0 e5 ea 8b e8 65 1b 00 00 65 ff RSP: 0018:ffffc90000007820 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 0000000000000101 RDX: ffff888027613c00 RSI: 00000000ffffffff RDI: ffffffff8e738a60 RBP: 0000000000000001 R08: ffffffff86f58c82 R09: 1ffff11004864ace R10: dffffc0000000000 R11: ffffffff86f58c00 R12: 0000000000000000 R13: ffff888027613c00 R14: 00000000ffffffff R15: ffffffff8e738a60 FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005587d7870131 CR3: 000000000e534000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mac80211_hwsim_addr_iter+0x8b/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:1357 __iterate_interfaces+0x222/0x510 net/mac80211/util.c:774 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:810 mac80211_hwsim_addr_match drivers/net/wireless/virtual/mac80211_hwsim.c:1380 [inline] mac80211_hwsim_tx_frame_no_nl+0x115a/0x18d0 drivers/net/wireless/virtual/mac80211_hwsim.c:1871 mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/virtual/mac80211_hwsim.c:2215 mac80211_hwsim_beacon_tx+0x3bf/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2315 __iterate_interfaces+0x222/0x510 net/mac80211/util.c:774 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:810 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2345 __run_hrtimer kernel/time/hrtimer.c:1691 [inline] __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1755 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1772 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5826 Code: 2b 00 74 08 4c 89 f7 e8 ba 25 88 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc90003f1f9e0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff920007e3f48 RCX: 0cbb4cd00f4b4e00 RDX: dffffc0000000000 RSI: ffffffff8beaea60 RDI: ffffffff8c3fd840 RBP: ffffc90003f1fb40 R08: ffffffff93ff9847 R09: 1ffffffff27ff308 R10: dffffc0000000000 R11: fffffbfff27ff309 R12: 1ffff920007e3f44 R13: dffffc0000000000 R14: ffffc90003f1fa40 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:326 [inline] rcu_read_lock include/linux/rcupdate.h:838 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline] batadv_nc_worker+0xec/0x610 net/batman-adv/network-coding.c:719 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x870/0xd30 kernel/workqueue.c:3393 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