INFO: task kworker/u4:0:10 blocked for more than 143 seconds. Not tainted 6.3.0-syzkaller-10620-g33afd4b76393 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:0 state:D stack:20880 pid:10 ppid:2 flags:0x00004000 Workqueue: writeback wb_workfn (flush-btrfs-67) Call Trace: context_switch kernel/sched/core.c:5309 [inline] __schedule+0x173b/0x4630 kernel/sched/core.c:6627 schedule+0xc3/0x180 kernel/sched/core.c:6703 io_schedule+0x8c/0x100 kernel/sched/core.c:8889 folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1301 folio_lock include/linux/pagemap.h:955 [inline] extent_write_cache_pages fs/btrfs/extent_io.c:2457 [inline] extent_writepages+0xae4/0x1990 fs/btrfs/extent_io.c:2599 do_writepages+0x3a6/0x670 mm/page-writeback.c:2551 __writeback_single_inode+0x155/0xfa0 fs/fs-writeback.c:1603 writeback_sb_inodes+0x8e3/0x11d0 fs/fs-writeback.c:1894 __writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:1965 wb_writeback+0x46c/0xc70 fs/fs-writeback.c:2070 wb_check_background_flush fs/fs-writeback.c:2136 [inline] wb_do_writeback fs/fs-writeback.c:2224 [inline] wb_workfn+0xc6f/0xff0 fs/fs-writeback.c:2251 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2390 worker_thread+0xa63/0x1210 kernel/workqueue.c:2537 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task syz-executor.5:8921 blocked for more than 144 seconds. Not tainted 6.3.0-syzkaller-10620-g33afd4b76393 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:20888 pid:8921 ppid:5043 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5309 [inline] __schedule+0x173b/0x4630 kernel/sched/core.c:6627 schedule+0xc3/0x180 kernel/sched/core.c:6703 wait_on_state fs/btrfs/extent-io-tree.c:707 [inline] wait_extent_bit+0x50c/0x670 fs/btrfs/extent-io-tree.c:751 lock_extent+0x1ce/0x280 fs/btrfs/extent-io-tree.c:1742 find_lock_delalloc_range+0x4c3/0x990 fs/btrfs/extent_io.c:479 writepage_delalloc+0x1f1/0x590 fs/btrfs/extent_io.c:1323 __extent_writepage+0x899/0x1740 fs/btrfs/extent_io.c:1609 extent_write_cache_pages fs/btrfs/extent_io.c:2477 [inline] extent_writepages+0xca7/0x1990 fs/btrfs/extent_io.c:2599 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] filemap_fdatawrite_range+0x16e/0x1e0 mm/filemap.c:441 btrfs_fdatawrite_range fs/btrfs/file.c:3862 [inline] start_ordered_ops+0xea/0x220 fs/btrfs/file.c:1737 btrfs_sync_file+0x410/0x10e0 fs/btrfs/file.c:1813 generic_write_sync include/linux/fs.h:2455 [inline] iomap_dio_complete+0x683/0x810 fs/iomap/direct-io.c:128 btrfs_direct_write fs/btrfs/file.c:1542 [inline] btrfs_do_write_iter+0x8b4/0x1270 fs/btrfs/file.c:1674 do_iter_write+0x7b1/0xcb0 fs/read_write.c:860 iter_file_splice_write+0x843/0xfe0 fs/splice.c:779 do_splice_from fs/splice.c:857 [inline] direct_splice_actor+0xe7/0x1c0 fs/splice.c:1023 splice_direct_to_actor+0x4c4/0xbd0 fs/splice.c:978 do_splice_direct+0x283/0x3d0 fs/splice.c:1066 do_sendfile+0x620/0xff0 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308 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: 0033:0x7f353a68c169 RSP: 002b:00007f353b443168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f353a7abf80 RCX: 00007f353a68c169 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 00007f353a6e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdd70fb15f R14: 00007f353b443300 R15: 0000000000022000 INFO: task syz-executor.5:8982 blocked for more than 145 seconds. Not tainted 6.3.0-syzkaller-10620-g33afd4b76393 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:22720 pid:8982 ppid:5043 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5309 [inline] __schedule+0x173b/0x4630 kernel/sched/core.c:6627 schedule+0xc3/0x180 kernel/sched/core.c:6703 io_schedule+0x8c/0x100 kernel/sched/core.c:8889 folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1301 folio_wait_writeback+0xec/0x1f0 mm/page-writeback.c:3087 btrfs_page_mkwrite+0x53c/0xc90 fs/btrfs/inode.c:8125 do_page_mkwrite+0x1a4/0x600 mm/memory.c:2931 wp_page_shared mm/memory.c:3280 [inline] do_wp_page+0x501/0x3690 mm/memory.c:3362 handle_pte_fault mm/memory.c:4964 [inline] __handle_mm_fault mm/memory.c:5089 [inline] handle_mm_fault+0x2371/0x5860 mm/memory.c:5243 do_user_addr_fault arch/x86/mm/fault.c:1440 [inline] handle_page_fault arch/x86/mm/fault.c:1534 [inline] exc_page_fault+0x7d2/0x910 arch/x86/mm/fault.c:1590 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:rep_movs_alternative+0x33/0xb0 arch/x86/lib/copy_user_64.S:56 Code: 46 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 <48> 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb RSP: 0018:ffffc9000aa07330 EFLAGS: 00050206 RAX: 0000000000000000 RBX: 00007fffffffefc8 RCX: 0000000000000038 RDX: 0000000000000000 RSI: ffffc9000aa073e0 RDI: 00000000200012e0 RBP: ffffc9000aa07498 R08: dffffc0000000000 R09: fffff52001540e83 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000038 R13: ffffc9000aa073e0 R14: ffffc9000aa073e0 R15: 00000000200012e0 copy_user_generic arch/x86/include/asm/uaccess_64.h:31 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:52 [inline] _copy_to_user+0xf0/0x130 lib/usercopy.c:41 copy_to_user include/linux/uaccess.h:169 [inline] fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:144 emit_fiemap_extent+0x259/0x410 fs/btrfs/extent_io.c:2846 fiemap_process_hole+0xa27/0xaf0 fs/btrfs/extent_io.c:3104 extent_fiemap+0xe7d/0x1fc0 btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7799 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x19ba/0x2b10 fs/ioctl.c:810 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl+0x81/0x160 fs/ioctl.c:856 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: 0033:0x7f353a68c169 RSP: 002b:00007f353b422168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f353a7ac050 RCX: 00007f353a68c169 RDX: 00000000200012c0 RSI: 00000000c020660b RDI: 0000000000000007 RBP: 00007f353a6e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdd70fb15f R14: 00007f353b422300 R15: 0000000000022000 Showing all locks held in the system: 3 locks held by kworker/u4:0/10: #0: ffff888012eb5938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc900000f7d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 #2: ffff88803bdaa0e0 (&type->s_umount_key#53){++++}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:414 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8cf26030 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518 1 lock held by rcu_tasks_trace/14: #0: ffffffff8cf263f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518 1 lock held by khungtaskd/28: #0: ffffffff8cf25e60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by kworker/0:2/899: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc9000498fd20 ( (work_completion)(&pwq->unbound_release_work) ){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 5 locks held by kworker/u4:6/2826: 2 locks held by kworker/0:3/4733: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc900036afd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by getty/4743: #0: ffff888028a4c098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900015c02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176 1 lock held by syz-executor.3/5036: #0: ffffffff8cf2b538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline] #0: ffffffff8cf2b538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992 2 locks held by kworker/0:4/5082: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc9000465fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/0:5/5084: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc9000467fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/0:6/5085: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc9000468fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/0:8/5092: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc90003f6fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/0:9/5324: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc90004ddfd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/0:10/5412: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc900054ffd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/1:11/5557: #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc9000a1c7d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 3 locks held by kworker/1:14/5614: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc9000557fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 #2: ffffffff8cf2b538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #2: ffffffff8cf2b538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992 2 locks held by kworker/0:15/5726: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc9000ad0fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/0:17/6460: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc90016747d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/0:20/8265: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc90016bb7d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/0:21/8266: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc9000314fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/0:22/8267: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc9000308fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 1 lock held by syz-executor.5/8921: #0: ffff88803bdaa460 (sb_writers#15){.+.+}-{0:0}, at: do_sendfile+0x5fb/0xff0 fs/read_write.c:1253 4 locks held by syz-executor.5/8982: #0: ffff8880744dd058 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:771 [inline] #0: ffff8880744dd058 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:170 #1: ffff888079f1b798 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:161 [inline] #1: ffff888079f1b798 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1381 [inline] #1: ffff888079f1b798 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1534 [inline] #1: ffff888079f1b798 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x1b9/0x910 arch/x86/mm/fault.c:1590 #2: ffff88803bdaa558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x1a4/0x600 mm/memory.c:2931 #3: ffff8880744dcee0 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x427/0xc90 fs/btrfs/inode.c:8116 2 locks held by syz-executor.0/10030: #0: ffff88803bdaa0e0 (&type->s_umount_key#53){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743 #1: ffff88802a1f87d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline] #1: ffff88802a1f87d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x278/0xab0 fs/fs-writeback.c:2728 2 locks held by udevadm/10497: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-syzkaller-10620-g33afd4b76393 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 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+0xec2/0xf00 kernel/hung_task.c:379 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 961 Comm: kworker/u4:5 Not tainted 6.3.0-syzkaller-10620-g33afd4b76393 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:unwind_next_frame+0x127/0x2180 arch/x86/kernel/unwind_orc.c:467 Code: fc ff df 80 3c 08 00 74 08 48 89 df e8 22 39 a6 00 f6 03 03 0f 85 da 18 00 00 48 8b 44 24 08 4c 8d 60 35 4c 89 e5 48 c1 ed 03 <49> be 00 00 00 00 00 fc ff df 42 0f b6 44 35 00 84 c0 0f 85 28 1a RSP: 0018:ffffc900000076d0 EFLAGS: 00000a07 RAX: ffffc900000077a0 RBX: 0000000000000000 RCX: ffffffff91b11103 RDX: dffffc0000000000 RSI: ffffffff81313b57 RDI: 0000000000000001 RBP: 1ffff92000000efa R08: 000000000000000e R09: ffffc90000007890 R10: ffffc900000077f0 R11: dffffc0000000001 R12: ffffc900000077d5 R13: ffffc900000077e8 R14: dffffc0000000000 R15: ffffffff81313b57 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556947888 CR3: 000000000cd30000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x111/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:521 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook mm/slub.c:1807 [inline] slab_free mm/slub.c:3786 [inline] kmem_cache_free+0x297/0x520 mm/slub.c:3808 rcu_do_batch kernel/rcu/tree.c:2115 [inline] rcu_core+0x9d7/0x15f0 kernel/rcu/tree.c:2377 __do_softirq+0x2ab/0x908 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x159/0x240 kernel/softirq.c:650 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:csd_lock_wait kernel/smp.c:413 [inline] RIP: 0010:smp_call_function_many_cond+0x23e4/0x3600 kernel/smp.c:987 Code: 0f b6 04 03 84 c0 75 7f 45 8b 37 44 89 f6 83 e6 01 31 ff e8 ae 1d 0b 00 41 83 e6 01 4d 89 e6 75 07 e8 f0 19 0b 00 eb 40 f3 90 <48> b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 75 10 41 f7 07 01 RSP: 0018:ffffc90004c5f5c0 EFLAGS: 00000293 RAX: ffffffff81804894 RBX: 1ffff110173285c5 RCX: ffff8880206f5940 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90004c5f9c0 R08: ffffffff81804862 R09: fffffbfff2063255 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b983d300 R13: 0000000000000001 R14: ffff8880b983d300 R15: ffff8880b9942e28 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1155 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1770 [inline] text_poke_bp_batch+0x2bf/0x950 arch/x86/kernel/alternative.c:1970 text_poke_flush arch/x86/kernel/alternative.c:2161 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2168 arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x132/0x250 kernel/jump_label.c:205 static_key_enable+0x1a/0x20 kernel/jump_label.c:218 toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:831 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2390 worker_thread+0xa63/0x1210 kernel/workqueue.c:2537 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308