audit: type=1326 audit(1626494461.856:181): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=13998 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x466609 code=0x0 INFO: task syz-executor.3:13989 blocked for more than 143 seconds. Not tainted 5.10.49 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27952 pid:13989 ppid: 408 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:3776 [inline] __schedule+0x83f/0x1e70 kernel/sched/core.c:4525 schedule+0xcb/0x270 kernel/sched/core.c:4603 rwsem_down_read_slowpath+0x2ad/0xb90 kernel/locking/rwsem.c:1099 __down_read kernel/locking/rwsem.c:1341 [inline] down_read+0x1f1/0x420 kernel/locking/rwsem.c:1506 mmap_read_lock include/linux/mmap_lock.h:46 [inline] exit_mm kernel/exit.c:450 [inline] do_exit+0x702/0x2780 kernel/exit.c:798 do_group_exit+0x125/0x310 kernel/exit.c:908 __do_sys_exit_group kernel/exit.c:919 [inline] __se_sys_exit_group kernel/exit.c:917 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:917 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 RSP: 002b:00007ffce3baa478 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 0000000000466609 RDX: 00000000004193eb RSI: ffffffffffffffbc RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000572098 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffce3baa570 INFO: task syz-executor.3:14000 blocked for more than 143 seconds. Not tainted 5.10.49 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:28640 pid:14000 ppid: 408 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:3776 [inline] __schedule+0x83f/0x1e70 kernel/sched/core.c:4525 schedule+0xcb/0x270 kernel/sched/core.c:4603 rwsem_down_read_slowpath+0x2ad/0xb90 kernel/locking/rwsem.c:1099 __down_read kernel/locking/rwsem.c:1341 [inline] down_read+0x1f1/0x420 kernel/locking/rwsem.c:1506 mmap_read_lock include/linux/mmap_lock.h:46 [inline] exit_mm kernel/exit.c:450 [inline] do_exit+0x702/0x2780 kernel/exit.c:798 do_group_exit+0x125/0x310 kernel/exit.c:908 get_signal+0x469/0x2200 kernel/signal.c:2758 arch_do_signal+0x88/0x1a90 arch/x86/kernel/signal.c:789 exit_to_user_mode_loop kernel/entry/common.c:161 [inline] exit_to_user_mode_prepare+0xf7/0x160 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x38/0x230 kernel/entry/common.c:266 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 RSP: 002b:00007f1a481c4218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000056bf88 RCX: 0000000000466609 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056bf88 RBP: 000000000056bf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf8c R13: 00007ffce3baa24f R14: 00007f1a481c4300 R15: 0000000000022000 INFO: task syz-executor.3:14006 blocked for more than 143 seconds. Not tainted 5.10.49 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:29096 pid:14006 ppid: 408 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:3776 [inline] __schedule+0x83f/0x1e70 kernel/sched/core.c:4525 schedule+0xcb/0x270 kernel/sched/core.c:4603 rwsem_down_read_slowpath+0x2ad/0xb90 kernel/locking/rwsem.c:1099 __down_read kernel/locking/rwsem.c:1341 [inline] down_read+0x1f1/0x420 kernel/locking/rwsem.c:1506 mmap_read_lock include/linux/mmap_lock.h:46 [inline] exit_mm kernel/exit.c:450 [inline] do_exit+0x702/0x2780 kernel/exit.c:798 do_group_exit+0x125/0x310 kernel/exit.c:908 get_signal+0x469/0x2200 kernel/signal.c:2758 arch_do_signal+0x88/0x1a90 arch/x86/kernel/signal.c:789 exit_to_user_mode_loop kernel/entry/common.c:161 [inline] exit_to_user_mode_prepare+0xf7/0x160 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x38/0x230 kernel/entry/common.c:266 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 RSP: 002b:00007f1a48182218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000056c0f8 RCX: 0000000000466609 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056c0f8 RBP: 000000000056c0f0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0fc R13: 00007ffce3baa24f R14: 00007f1a48182300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/22: #0: ffffffff84df64a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6263 1 lock held by in:imklog/216: 2 locks held by rs:main Q:Reg/219: #0: ffff88800e33e0f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:930 #1: ffff88800f7bc438 (sb_writers#3){.+.+}-{0:0}, at: ksys_write+0x12d/0x250 fs/read_write.c:658 1 lock held by syz-executor.3/13989: #0: ffff88800cfd7828 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:46 [inline] #0: ffff88800cfd7828 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:450 [inline] #0: ffff88800cfd7828 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x702/0x2780 kernel/exit.c:798 1 lock held by syz-executor.3/14000: #0: ffff88800cfd7828 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:46 [inline] #0: ffff88800cfd7828 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:450 [inline] #0: ffff88800cfd7828 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x702/0x2780 kernel/exit.c:798 2 locks held by syz-executor.3/14004: 1 lock held by syz-executor.3/14006: #0: ffff88800cfd7828 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:46 [inline] #0: ffff88800cfd7828 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:450 [inline] #0: ffff88800cfd7828 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x702/0x2780 kernel/exit.c:798 =============================================