audit: type=1800 audit(1661551872.880:8687): pid=11509 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="file0" dev="sda1" ino=14483 res=0 EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue audit: type=1804 audit(1661551872.950:8688): pid=11509 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir1850359057/syzkaller.Ys8Gy3/2001/file0/file0" dev="sda1" ino=14483 res=1 INFO: task syz-executor.0:5594 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-executor.0 D28648 5594 28780 0x80000000 EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 audit: type=1800 audit(1661551872.950:8689): pid=11509 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="file0" dev="sda1" ino=14483 res=0 audit: type=1804 audit(1661551872.950:8690): pid=11509 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.4" name="/root/syzkaller-testdir1850359057/syzkaller.Ys8Gy3/2001/file0/file0" dev="sda1" ino=14483 res=1 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 exit_mm kernel/exit.c:512 [inline] do_exit+0x6e4/0x2be0 kernel/exit.c:857 do_group_exit+0x125/0x310 kernel/exit.c:967 __do_sys_exit_group kernel/exit.c:978 [inline] __se_sys_exit_group kernel/exit.c:976 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:976 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4a8c943279 Code: Bad RIP value. RSP: 002b:00007ffdefa82818 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f4a8c943279 RDX: 00007f4a8c8f5ebb RSI: ffffffffffffffb8 RDI: 0000000000000000 RBP: 0000000000000000 R08: 000000ee7aca4b40 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffdefa82900 INFO: task syz-executor.0:5597 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-executor.0 D28456 5597 28780 0x80000000 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 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 exit_mm kernel/exit.c:512 [inline] do_exit+0x6e4/0x2be0 kernel/exit.c:857 audit: type=1800 audit(1661551873.940:8691): pid=11577 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="file0" dev="sda1" ino=14451 res=0 do_group_exit+0x125/0x310 kernel/exit.c:967 EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue get_signal+0x3f2/0x1f70 kernel/signal.c:2589 audit: type=1804 audit(1661551873.950:8692): pid=11577 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir1850359057/syzkaller.Ys8Gy3/2002/file0/file0" dev="sda1" ino=14451 res=1 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 audit: type=1800 audit(1661551873.950:8693): pid=11577 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="file0" dev="sda1" ino=14451 res=0 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 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 audit: type=1804 audit(1661551873.960:8694): pid=11577 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.4" name="/root/syzkaller-testdir1850359057/syzkaller.Ys8Gy3/2002/file0/file0" dev="sda1" ino=14451 res=1 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4a8c943279 Code: Bad RIP value. RSP: 002b:00007f4a8b2b8168 EFLAGS: 00000246 ORIG_RAX: 000000000000010f RAX: fffffffffffffdfe RBX: 00007f4a8ca55f80 RCX: 00007f4a8c943279 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f4a8c99d189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdefa825df R14: 00007f4a8b2b8300 R15: 0000000000022000 INFO: task syz-executor.0:5602 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-executor.0 D27944 5602 28780 0x80000000 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 ceph: device name is missing path (no : separator in Rd::]:0::) schedule+0x8d/0x1b0 kernel/sched/core.c:3561 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 audit: type=1800 audit(1661551874.730:8695): pid=11638 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="file0" dev="sda1" ino=13970 res=0 audit: type=1804 audit(1661551874.780:8696): pid=11638 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir1850359057/syzkaller.Ys8Gy3/2003/file0" dev="sda1" ino=13970 res=1 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 exit_mm kernel/exit.c:512 [inline] do_exit+0x6e4/0x2be0 kernel/exit.c:857 EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue ceph: device name is missing path (no : separator in Rd::]:0::) do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 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: 0033:0x7f4a8c943279 Code: Bad RIP value. RSP: 002b:00007f4a8b297218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f4a8ca56058 RCX: 00007f4a8c943279 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4a8ca56058 RBP: 00007f4a8ca56050 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4a8ca5605c R13: 00007ffdefa825df R14: 00007f4a8b297300 R15: 0000000000022000 INFO: task syz-executor.0:5603 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-executor.0 D29760 5603 28780 0x80000000 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 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 exit_mm kernel/exit.c:512 [inline] do_exit+0x6e4/0x2be0 kernel/exit.c:857 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 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: 0033:0x7f4a8c943279 Code: Bad RIP value. RSP: 002b:00007f4a8b276218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f4a8ca56128 RCX: 00007f4a8c943279 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4a8ca56128 RBP: 00007f4a8ca56120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4a8ca5612c R13: 00007ffdefa825df R14: 00007f4a8b276300 R15: 0000000000022000 INFO: task syz-executor.0:5605 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-executor.0 D29760 5605 28780 0x80000000 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 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 exit_mm kernel/exit.c:512 [inline] do_exit+0x6e4/0x2be0 kernel/exit.c:857 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 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: 0033:0x7f4a8c943279 Code: Bad RIP value. RSP: 002b:00007f4a8b234218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f4a8ca562c8 RCX: 00007f4a8c943279 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4a8ca562c8 RBP: 00007f4a8ca562c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4a8ca562cc R13: 00007ffdefa825df R14: 00007f4a8b234300 R15: 0000000000022000 INFO: task syz-executor.0:5606 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-executor.0 D29024 5606 28780 0x80000000 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 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 exit_mm kernel/exit.c:512 [inline] do_exit+0x6e4/0x2be0 kernel/exit.c:857 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 9pnet: Insufficient options for proto=fd do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 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: 0033:0x7f4a8c943279 Code: Bad RIP value. RSP: 002b:00007f4a8b213218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f4a8ca56398 RCX: 00007f4a8c943279 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4a8ca56398 RBP: 00007f4a8ca56390 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4a8ca5639c R13: 00007ffdefa825df R14: 00007f4a8b213300 R15: 0000000000022000 INFO: task syz-executor.0:5607 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-executor.0 D29504 5607 28780 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 kauditd_printk_skb: 3 callbacks suppressed audit: type=1800 audit(1661551878.271:8700): pid=11966 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=14353 res=0 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 __do_page_fault+0x97f/0xd60 arch/x86/mm/fault.c:1348 audit: type=1800 audit(1661551878.561:8701): pid=12013 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=14353 res=0 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0010:__clear_user+0x40/0x70 arch/x86/lib/usercopy_64.c:23 Code: b7 71 89 e8 52 38 99 f9 0f 01 cb 48 89 d8 48 c1 eb 03 48 89 ef 83 e0 07 48 89 d9 48 85 c9 74 19 66 2e 0f 1f 84 00 00 00 00 00 <48> c7 07 00 00 00 00 48 83 c7 08 ff c9 75 f1 48 89 c1 85 c9 74 0a RSP: 0018:ffff8880abb37b20 EFLAGS: 00050202 RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000008 RDX: 0000000000000000 RSI: ffffffff87f1b25e RDI: 00007f4a8b1f1fc0 RBP: 00007f4a8b1f1fc0 R08: ffffffff8cd254f0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a8e743c0 R13: 1ffff11015766f68 R14: 0000000000000001 R15: 00007ffffffff000 copy_xregs_to_user arch/x86/include/asm/fpu/internal.h:366 [inline] copy_fpregs_to_sigframe arch/x86/kernel/fpu/signal.c:126 [inline] copy_fpstate_to_sigframe+0x1a1/0x6b0 arch/x86/kernel/fpu/signal.c:177 get_sigframe.constprop.0.isra.0+0x4a6/0x6a0 arch/x86/kernel/signal.c:284 __setup_rt_frame arch/x86/kernel/signal.c:466 [inline] setup_rt_frame arch/x86/kernel/signal.c:711 [inline] handle_signal arch/x86/kernel/signal.c:755 [inline] do_signal+0xa55/0x1670 arch/x86/kernel/signal.c:801 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode+0x277/0x2d0 arch/x86/entry/common.c:198 retint_user+0x8/0x18 RIP: 0033:0x7f4a8c8e9f94 Code: Bad RIP value. RSP: 002b:00007f4a8b1f2190 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f4a8c9955c0 RDX: 00000000000236e2 RSI: 0000000000000005 RDI: 00007f4a8c99c091 RBP: 00007f4a8c99d189 R08: 00007ffdefba2000 R09: 000000ee497a542a R10: 000366a4173d6f61 R11: 0000000000000001 R12: 0000000000000000 R13: 00007ffdefa825df R14: 00007f4a8b1f2300 R15: 0000000000022000 INFO: task syz-executor.0:5608 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-executor.0 D30752 5608 28780 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 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 __do_page_fault+0x97f/0xd60 arch/x86/mm/fault.c:1348 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7f4a8c8e9f94 Code: Bad RIP value. RSP: 002b:00007f4a8b1d1190 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f4a8c9a752a RDX: 00000000000236e5 RSI: 0000000000000000 RDI: 00007f4a8c99c091 RBP: 00007f4a8c99d189 R08: 00007ffdefba2000 R09: 000000ee49b1b1d5 R10: 00037fceaf133580 R11: 0000000000000001 R12: 0000000000000000 R13: 00007ffdefa825df R14: 00007f4a8b1d1300 R15: 0000000000022000 Showing all locks held in the system: 3 locks held by kworker/u4:0/7: 1 lock held by khungtaskd/1571: #0: 0000000014ce0cbc (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7723: #0: 000000003b323032 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 9pnet: Insufficient options for proto=fd 2 locks held by kworker/1:3/9341: #0: 00000000ca1ee9c7 ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000003b7a5e7f ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 3 locks held by kworker/1:4/9342: #0: 000000004467ee02 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000003498df81 ((work_completion)(&map->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000175ac538 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #2: 00000000175ac538 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 3 locks held by kworker/1:0/2229: #0: 000000004467ee02 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000008e768fa0 ((work_completion)(&map->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000175ac538 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #2: 00000000175ac538 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x256/0x6f0 kernel/rcu/tree_exp.h:667 1 lock held by syz-executor.0/5594: #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: exit_mm kernel/exit.c:512 [inline] #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: do_exit+0x6e4/0x2be0 kernel/exit.c:857 1 lock held by syz-executor.0/5597: #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: exit_mm kernel/exit.c:512 [inline] #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: do_exit+0x6e4/0x2be0 kernel/exit.c:857 1 lock held by syz-executor.0/5602: #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: exit_mm kernel/exit.c:512 [inline] #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: do_exit+0x6e4/0x2be0 kernel/exit.c:857 1 lock held by syz-executor.0/5603: #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: exit_mm kernel/exit.c:512 [inline] #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: do_exit+0x6e4/0x2be0 kernel/exit.c:857 1 lock held by syz-executor.0/5604: 1 lock held by syz-executor.0/5605: #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: exit_mm kernel/exit.c:512 [inline] #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: do_exit+0x6e4/0x2be0 kernel/exit.c:857 1 lock held by syz-executor.0/5606: #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: exit_mm kernel/exit.c:512 [inline] #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: do_exit+0x6e4/0x2be0 kernel/exit.c:857 1 lock held by syz-executor.0/5607: #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: __do_page_fault+0x97f/0xd60 arch/x86/mm/fault.c:1348 1 lock held by syz-executor.0/5608: #0: 00000000f0e313ed (&mm->mmap_sem){++++}, at: __do_page_fault+0x97f/0xd60 arch/x86/mm/fault.c:1348 2 locks held by kworker/0:1/8493: #0: 000000004467ee02 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000f6f1e515 ((work_completion)(&map->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 2 locks held by syz-executor.4/12129: #0: 00000000c0bd70f3 (&ctx->mutex){+.+.}, at: perf_event_ctx_lock_nested+0x237/0x430 kernel/events/core.c:1283 #1: 00000000e062aea0 (&event->mmap_mutex){+.+.}, at: perf_event_set_output+0x2b6/0x4c0 kernel/events/core.c:10442 1 lock held by syz-executor.5/12139: #0: 00000000df2db928 (&net->nft.commit_mutex){+.+.}, at: nf_tables_valid_genid+0x20/0xb0 net/netfilter/nf_tables_api.c:6781 2 locks held by systemd-udevd/12146: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4691 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:___bpf_prog_run+0x2a3c/0x4e80 kernel/bpf/core.c:1245 Code: 0c 18 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 5d 11 00 00 4d 63 7e 04 48 89 d7 48 89 14 24 4c 89 fe e8 a4 25 f6 ff <48> 8b 14 24 4c 39 fa 0f 84 a1 0d 00 00 e8 82 24 f6 ff 49 8d 7e 02 RSP: 0018:ffff8880a0d87a30 EFLAGS: 00000293 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff816c60dc RDX: 0000000000000090 RSI: ffff8880a0d7c540 RDI: 0000000000000006 RBP: ffff8880a0d87b00 R08: 0000000000000000 R09: 0000000000000027 R10: 0000000000000006 R11: 0000000000000000 R12: ffffffff886fb460 R13: ffffed10141b0f62 R14: ffffc90001ad2078 R15: 0000000000000090 FS: 00007f80cd5698c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f80c8d29000 CR3: 00000000a0e8d000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: