INFO: task syz-executor330:4291 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor330 D28368 4291 8112 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:115 rdma_destroy_id+0x4c9/0x950 drivers/infiniband/core/cma.c:1750 ucma_close+0x140/0x360 drivers/infiniband/core/ucma.c:1819 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f6f63e69f03 Code: Bad RIP value. RSP: 002b:00007ffd09d4d1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f6f63e69f03 RDX: 0000000000000048 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffd09d4d220 R09: 00007ffd09d4d220 R10: 00007ffd09d4d220 R11: 0000000000000246 R12: 00007ffd09d4d218 R13: 00007ffd09d4d250 R14: 00007ffd09d4d230 R15: 00000000000013c0 INFO: task syz-executor330:4921 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor330 D28368 4921 8109 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:115 rdma_destroy_id+0x4c9/0x950 drivers/infiniband/core/cma.c:1750 ucma_close+0x140/0x360 drivers/infiniband/core/ucma.c:1819 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f6f63e69f03 Code: Bad RIP value. RSP: 002b:00007ffd09d4d1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f6f63e69f03 RDX: 0000000000000048 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffd09d4d220 R09: 00007ffd09d4d220 R10: 00007ffd09d4d220 R11: 0000000000000246 R12: 00007ffd09d4d218 R13: 00007ffd09d4d250 R14: 00007ffd09d4d230 R15: 00000000000013e6 INFO: task syz-executor330:20847 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor330 D28368 20847 8115 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:115 rdma_destroy_id+0x4c9/0x950 drivers/infiniband/core/cma.c:1750 ucma_close+0x140/0x360 drivers/infiniband/core/ucma.c:1819 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f6f63e69f03 Code: Bad RIP value. RSP: 002b:00007ffd09d4d1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f6f63e69f03 RDX: 0000000000000048 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffd09d4d220 R09: 00007ffd09d4d220 R10: 00007ffd09d4d220 R11: 0000000000000246 R12: 00007ffd09d4d218 R13: 00007ffd09d4d250 R14: 00007ffd09d4d230 R15: 0000000000001bd7 Showing all locks held in the system: 1 lock held by ksoftirqd/1/18: #0: 00000000a719046e (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline] #0: 00000000a719046e (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 1 lock held by khungtaskd/1570: #0: 0000000084e2d5d8 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7811: #0: 00000000fbf24c6b (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 4 locks held by syz-executor330/8113: #0: 00000000a719046e (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline] #0: 00000000a719046e (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 #1: 00000000a8d8c557 (tk_core.seq){----}, at: current_kernel_time64 include/linux/timekeeping.h:277 [inline] #1: 00000000a8d8c557 (tk_core.seq){----}, at: current_time+0x6f/0x1c0 fs/inode.c:2162 #2: 000000008b87dc0b (pool_lock){-.-.}, at: __free_object+0x17/0x1e0 lib/debugobjects.c:251 #3: 00000000b03ecc46 (&mm->context.lock){+.+.}, at: ldt_dup_context+0x38/0x260 arch/x86/kernel/ldt.c:367 1 lock held by cron/14961: #0: 0000000010803314 (&type->i_mutex_dir_key#3){++++}, at: inode_lock_shared include/linux/fs.h:758 [inline] #0: 0000000010803314 (&type->i_mutex_dir_key#3){++++}, at: do_last fs/namei.c:3326 [inline] #0: 0000000010803314 (&type->i_mutex_dir_key#3){++++}, at: path_openat+0x17ec/0x2df0 fs/namei.c:3537 1 lock held by syz-executor330/14967: #0: 00000000a719046e (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline] #0: 00000000a719046e (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 14991 Comm: syz-executor330 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:debug_lockdep_rcu_enabled+0x0/0xe0 kernel/rcu/update.c:253 Code: ff ff 48 89 ef e8 90 c4 47 00 e9 fa fd ff ff 48 89 ef e8 83 c4 47 00 e9 62 fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <48> c7 c0 44 e0 26 8b 53 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 RSP: 0000:ffff88809642fb70 EFLAGS: 00000246 RAX: ffff88809c9fe1c0 RBX: 0000000000000000 RCX: ffffffff818d0dbf RDX: 0000000000000000 RSI: 00000000000012c2 RDI: ffffffff8872a8e0 RBP: ffffffff8872a8e0 R08: ffffffffffffffe8 R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000440549 R12: 00000000000012c2 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88809642fd48 FS: 0000555555657300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000050 CR3: 00000000a195d000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ___might_sleep+0x15/0x2b0 kernel/sched/core.c:6157 process_huge_page mm/memory.c:4802 [inline] clear_huge_page+0x98/0x460 mm/memory.c:4863 __do_huge_pmd_anonymous_page mm/huge_memory.c:583 [inline] do_huge_pmd_anonymous_page+0xbb5/0x1e60 mm/huge_memory.c:740 create_huge_pmd mm/memory.c:4066 [inline] __handle_mm_fault+0x289c/0x41c0 mm/memory.c:4270 handle_mm_fault+0x436/0xb10 mm/memory.c:4336 __do_page_fault+0x68e/0xd60 arch/x86/mm/fault.c:1412 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7f6f63e69738 Code: 01 00 00 00 48 8d 35 2d 89 08 00 e8 92 06 00 00 66 0f 6f 05 3a 8c 08 00 45 31 c0 48 b8 72 64 6d 61 5f 63 6d 00 b9 02 00 00 00 <48> 89 04 25 50 00 00 20 31 c0 ba 40 00 00 20 0f 29 04 25 40 00 00 RSP: 002b:00007ffd09d4d200 EFLAGS: 00010246 RAX: 006d635f616d6472 RBX: 00000000001185ac RCX: 0000000000000002 RDX: 0000000000000012 RSI: 00007f6f63ef2046 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd09d4cc70 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd09d4d218 R13: 00007ffd09d4d250 R14: 00007ffd09d4d230 R15: 0000000000008214