INFO: task syz.2.4160:24232 blocked for more than 143 seconds. Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.4160 state:D stack:26048 pid:24232 tgid:24232 ppid:19101 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0x124/0x330 kernel/locking/rwsem.c:1526 mmap_read_lock include/linux/mmap_lock.h:144 [inline] exit_mm kernel/exit.c:546 [inline] do_exit+0x8b2/0x2d70 kernel/exit.c:925 do_group_exit+0xd3/0x2a0 kernel/exit.c:1087 get_signal+0x24ed/0x26c0 kernel/signal.c:3017 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f122a57ff53 RSP: 002b:00007ffd6c8b9d18 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: fffffffffffffffc RBX: 00007f122a7462d8 RCX: 00007f122a57ff53 RDX: 0000000000000000 RSI: 0000000000402000 RDI: 0000000000000000 RBP: 00007f122a746240 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000000003 R13: 00007f122a746240 R14: 0000000000000003 R15: 00000000000006be INFO: task syz.2.4160:24233 blocked for more than 143 seconds. Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.4160 state:D stack:27120 pid:24233 tgid:24232 ppid:19101 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0x124/0x330 kernel/locking/rwsem.c:1526 i_mmap_lock_read include/linux/fs.h:529 [inline] rmap_walk_file+0x54b/0x690 mm/rmap.c:2694 rmap_walk+0x7a/0xd0 mm/rmap.c:2726 remove_migration_ptes+0x11e/0x1b0 mm/migrate.c:373 unmap_and_move_huge_page mm/migrate.c:1526 [inline] migrate_hugetlbs mm/migrate.c:1648 [inline] migrate_pages+0xa3d/0x21f0 mm/migrate.c:2046 migrate_to_node mm/mempolicy.c:1099 [inline] do_migrate_pages+0x486/0x740 mm/mempolicy.c:1198 kernel_migrate_pages+0x5b2/0x750 mm/mempolicy.c:1713 __do_sys_migrate_pages mm/mempolicy.c:1731 [inline] __se_sys_migrate_pages mm/mempolicy.c:1727 [inline] __x64_sys_migrate_pages+0x96/0x100 mm/mempolicy.c:1727 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f122a57ff19 RSP: 002b:00007f122b43c058 EFLAGS: 00000246 ORIG_RAX: 0000000000000100 RAX: ffffffffffffffda RBX: 00007f122a745fa0 RCX: 00007f122a57ff19 RDX: 00000000200002c0 RSI: 0000000000000003 RDI: 0000000000000000 RBP: 00007f122a5f3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000280 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f122a745fa0 R15: 00007ffd6c8b9c48 INFO: task syz.2.4160:24240 blocked for more than 144 seconds. Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.4160 state:D stack:28416 pid:24240 tgid:24232 ppid:19101 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 io_schedule+0xbf/0x130 kernel/sched/core.c:7681 folio_wait_bit_common+0x3d8/0x9b0 mm/filemap.c:1308 __folio_lock mm/filemap.c:1646 [inline] folio_lock include/linux/pagemap.h:1151 [inline] folio_lock include/linux/pagemap.h:1147 [inline] __filemap_get_folio+0x6a4/0xaf0 mm/filemap.c:1899 filemap_lock_folio include/linux/pagemap.h:788 [inline] filemap_lock_hugetlb_folio include/linux/hugetlb.h:789 [inline] hugetlbfs_zero_partial_page+0xaf/0x520 fs/hugetlbfs/inode.c:661 hugetlbfs_punch_hole fs/hugetlbfs/inode.c:715 [inline] hugetlbfs_fallocate+0xe12/0x11d0 fs/hugetlbfs/inode.c:748 vfs_fallocate+0x459/0xf90 fs/open.c:327 madvise_remove mm/madvise.c:1020 [inline] madvise_vma_behavior+0x1b6d/0x1da0 mm/madvise.c:1255 madvise_walk_vmas+0x1cf/0x2c0 mm/madvise.c:1497 do_madvise+0x30e/0x770 mm/madvise.c:1684 __do_sys_madvise mm/madvise.c:1700 [inline] __se_sys_madvise mm/madvise.c:1698 [inline] __x64_sys_madvise+0xa9/0x110 mm/madvise.c:1698 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f122a57ff19 RSP: 002b:00007f122b41b058 EFLAGS: 00000246 ORIG_RAX: 000000000000001c RAX: ffffffffffffffda RBX: 00007f122a746080 RCX: 00007f122a57ff19 RDX: 0000000000000009 RSI: 0000000000600002 RDI: 0000000020000000 RBP: 00007f122a5f3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f122a746080 R15: 00007ffd6c8b9c48 INFO: task syz.2.4160:24243 blocked for more than 144 seconds. Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.4160 state:D stack:27632 pid:24243 tgid:24232 ppid:19101 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905 rwsem_down_write_slowpath+0x539/0x12a0 kernel/locking/rwsem.c:1176 __down_write_common kernel/locking/rwsem.c:1304 [inline] __down_write kernel/locking/rwsem.c:1313 [inline] _down_write_nest_lock+0x1db/0x210 kernel/locking/rwsem.c:1672 vm_lock_mapping+0xa7/0xd0 mm/vma.c:2006 mm_take_all_locks+0x6ac/0xbd0 mm/vma.c:2076 __mmu_notifier_register+0x5c2/0x770 mm/mmu_notifier.c:634 mmu_notifier_register+0x43/0x190 mm/mmu_notifier.c:705 kvm_init_mmu_notifier virt/kvm/kvm_main.c:880 [inline] kvm_create_vm virt/kvm/kvm_main.c:1185 [inline] kvm_dev_ioctl_create_vm virt/kvm/kvm_main.c:5353 [inline] kvm_dev_ioctl+0xe52/0x1aa0 virt/kvm/kvm_main.c:5395 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f122a57ff19 RSP: 002b:00007f122b3fa058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f122a746160 RCX: 00007f122a57ff19 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000003 RBP: 00007f122a5f3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f122a746160 R15: 00007ffd6c8b9c48 INFO: task syz.8.4168:24256 blocked for more than 145 seconds. Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.8.4168 state:D stack:27280 pid:24256 tgid:24256 ppid:15683 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0x124/0x330 kernel/locking/rwsem.c:1526 mmap_read_lock include/linux/mmap_lock.h:144 [inline] exit_mm kernel/exit.c:546 [inline] do_exit+0x8b2/0x2d70 kernel/exit.c:925 do_group_exit+0xd3/0x2a0 kernel/exit.c:1087 get_signal+0x24ed/0x26c0 kernel/signal.c:3017 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1e1fb7ff53 RSP: 002b:00007ffe8c8c13d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: fffffffffffffffc RBX: 00007f1e1e1f76c0 RCX: 00007f1e1fb7ff53 RDX: 0000000000000000 RSI: 0000000000021000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000020022 R11: 0000000000000246 R12: 00007ffe8c8c1530 R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000 INFO: task syz.8.4168:24257 blocked for more than 145 seconds. Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.8.4168 state:D stack:27632 pid:24257 tgid:24256 ppid:15683 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905 __mutex_lock_common kernel/locking/mutex.c:665 [inline] __mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735 mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 __mmu_notifier_register+0x5c2/0x770 mm/mmu_notifier.c:634 mmu_notifier_register+0x43/0x190 mm/mmu_notifier.c:705 kvm_init_mmu_notifier virt/kvm/kvm_main.c:880 [inline] kvm_create_vm virt/kvm/kvm_main.c:1185 [inline] kvm_dev_ioctl_create_vm virt/kvm/kvm_main.c:5353 [inline] kvm_dev_ioctl+0xe52/0x1aa0 virt/kvm/kvm_main.c:5395 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1e1fb7ff19 RSP: 002b:00007f1e20a60058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f1e1fd45fa0 RCX: 00007f1e1fb7ff19 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000003 RBP: 00007f1e1fbf3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1e1fd45fa0 R15: 00007ffe8c8c1438 INFO: task syz.6.4169:24258 blocked for more than 145 seconds. Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.6.4169 state:D stack:28000 pid:24258 tgid:24258 ppid:21016 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084 __down_read_common kernel/locking/rwsem.c:1248 [inline] __down_read kernel/locking/rwsem.c:1261 [inline] down_read+0x124/0x330 kernel/locking/rwsem.c:1526 mmap_read_lock include/linux/mmap_lock.h:144 [inline] exit_mm kernel/exit.c:546 [inline] do_exit+0x8b2/0x2d70 kernel/exit.c:925 do_group_exit+0xd3/0x2a0 kernel/exit.c:1087 get_signal+0x24ed/0x26c0 kernel/signal.c:3017 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2b56f7ff53 RSP: 002b:00007fff9685e788 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: fffffffffffffffc RBX: 00007f2b555f76c0 RCX: 00007f2b56f7ff53 RDX: 0000000000000000 RSI: 0000000000021000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000020022 R11: 0000000000000246 R12: 00007fff9685e8e0 R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000 INFO: task syz.6.4169:24259 blocked for more than 146 seconds. Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.6.4169 state:D stack:27504 pid:24259 tgid:24258 ppid:21016 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905 __mutex_lock_common kernel/locking/mutex.c:665 [inline] __mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735 mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 __mmu_notifier_register+0x5c2/0x770 mm/mmu_notifier.c:634 mmu_notifier_register+0x43/0x190 mm/mmu_notifier.c:705 kvm_init_mmu_notifier virt/kvm/kvm_main.c:880 [inline] kvm_create_vm virt/kvm/kvm_main.c:1185 [inline] kvm_dev_ioctl_create_vm virt/kvm/kvm_main.c:5353 [inline] kvm_dev_ioctl+0xe52/0x1aa0 virt/kvm/kvm_main.c:5395 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2b56f7ff19 RSP: 002b:00007f2b57d41058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f2b57145fa0 RCX: 00007f2b56f7ff19 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000004 RBP: 00007f2b56ff3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2b57145fa0 R15: 00007fff9685e7e8 INFO: task syz.1.4185:24311 blocked for more than 146 seconds. Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.4185 state:D stack:27632 pid:24311 tgid:24310 ppid:18205 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905 __mutex_lock_common kernel/locking/mutex.c:665 [inline] __mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735 mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 __mmu_notifier_register+0x5c2/0x770 mm/mmu_notifier.c:634 mmu_notifier_register+0x43/0x190 mm/mmu_notifier.c:705 kvm_init_mmu_notifier virt/kvm/kvm_main.c:880 [inline] kvm_create_vm virt/kvm/kvm_main.c:1185 [inline] kvm_dev_ioctl_create_vm virt/kvm/kvm_main.c:5353 [inline] kvm_dev_ioctl+0xe52/0x1aa0 virt/kvm/kvm_main.c:5395 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc9b37ff19 RSP: 002b:00007fdc991f6058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fdc9b545fa0 RCX: 00007fdc9b37ff19 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000004 RBP: 00007fdc9b3f3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fdc9b545fa0 R15: 00007ffebcfc3588 Showing all locks held in the system: 3 locks held by kauditd/29: 1 lock held by khungtaskd/30: #0: ffffffff8e1bb500 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e1bb500 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e1bb500 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744 2 locks held by getty/5570: #0: ffff888035d8a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc90002fde2f0 ( &ldata->atomic_read_lock ){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211 3 locks held by kworker/u8:16/6870: 1 lock held by syz.2.4160/24232: #0: ffff88807ce728e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff88807ce728e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff88807ce728e0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 1 lock held by syz.2.4160/24233: #0: ffff8881452d2788 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_read include/linux/fs.h:529 [inline] #0: ffff8881452d2788 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: rmap_walk_file+0x54b/0x690 mm/rmap.c:2694 3 locks held by syz.2.4160/24240: #0: ffff88814568c420 (sb_writers#15){.+.+}-{0:0}, at: madvise_remove mm/madvise.c:1020 [inline] #0: ffff88814568c420 (sb_writers#15){.+.+}-{0:0}, at: madvise_vma_behavior+0x1b6d/0x1da0 mm/madvise.c:1255 #1: ffff8881452d24b8 (&sb->s_type->i_mutex_key#22){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #1: ffff8881452d24b8 (&sb->s_type->i_mutex_key#22){+.+.}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:690 [inline] #1: ffff8881452d24b8 (&sb->s_type->i_mutex_key#22){+.+.}-{4:4}, at: hugetlbfs_fallocate+0xc27/0x11d0 fs/hugetlbfs/inode.c:748 #2: ffff8881452d2788 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_write include/linux/fs.h:509 [inline] #2: ffff8881452d2788 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:698 [inline] #2: ffff8881452d2788 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_fallocate+0xc94/0x11d0 fs/hugetlbfs/inode.c:748 3 locks held by syz.2.4160/24243: #0: ffff88807ce728e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff88807ce728e0 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 #2: ffff8881452d2788 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: vm_lock_mapping+0xa7/0xd0 mm/vma.c:2006 1 lock held by syz.8.4168/24256: #0: ffff88802a976d20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff88802a976d20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff88802a976d20 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.8.4168/24257: #0: ffff88802a976d20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff88802a976d20 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.6.4169/24258: #0: ffff888057dec620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888057dec620 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888057dec620 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.6.4169/24259: #0: ffff888057dec620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff888057dec620 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.1.4185/24310: #0: ffff888057de81e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888057de81e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888057de81e0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.1.4185/24311: #0: ffff888057de81e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff888057de81e0 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.7.4191/24335: #0: ffff8880788fc620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff8880788fc620 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff8880788fc620 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.7.4191/24336: #0: ffff8880788fc620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff8880788fc620 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.3.4211/24479: #0: ffff888079c84620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888079c84620 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888079c84620 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.3.4211/24480: #0: ffff888079c84620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff888079c84620 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.3.4211/24482: #0: ffff888079c84620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888079c84620 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888079c84620 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 1 lock held by syz.3.4211/24483: #0: ffff888079c84620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888079c84620 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888079c84620 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 1 lock held by syz.5.4214/24494: #0: ffff888079721560 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888079721560 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888079721560 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.5.4214/24497: #0: ffff888079721560 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff888079721560 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.9.4254/25167: #0: ffff88806c5a59a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff88806c5a59a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff88806c5a59a0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 1 lock held by syz.9.4254/25176: #0: ffff88806c5a59a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff88806c5a59a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff88806c5a59a0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.9.4254/25208: #0: ffff88806c5a59a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff88806c5a59a0 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.0.4263/25736: #0: ffff8880122276e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff8880122276e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff8880122276e0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 1 lock held by syz.0.4263/25737: #0: ffff8880122276e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff8880122276e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff8880122276e0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 1 lock held by syz.0.4263/25738: #0: ffff8880122276e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff8880122276e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff8880122276e0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.0.4263/25739: #0: ffff8880122276e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff8880122276e0 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.4.4264/25799: #0: ffff888079c71f20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888079c71f20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888079c71f20 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.4.4264/25800: #0: ffff888079c71f20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff888079c71f20 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.8.4279/26241: #0: ffff8880794f3c60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff8880794f3c60 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff8880794f3c60 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 1 lock held by syz.8.4279/26242: #0: ffff8880794f3c60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff8880794f3c60 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff8880794f3c60 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 1 lock held by syz.8.4279/26253: #0: ffff8880794f3c60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff8880794f3c60 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff8880794f3c60 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.8.4279/26257: #0: ffff8880794f3c60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff8880794f3c60 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.2.4286/26458: #0: ffff888028063c60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888028063c60 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888028063c60 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.2.4286/26462: #0: ffff888028063c60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff888028063c60 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.1.4291/27429: #0: ffff8880360b81e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff8880360b81e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff8880360b81e0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 1 lock held by syz.1.4291/27430: #0: ffff8880360b81e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff8880360b81e0 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 2 locks held by syz.1.4291/27431: #0: ffff8880360b81e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff8880360b81e0 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.6.4318/28376: #0: ffff888098abc620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff888098abc620 (&mm->mmap_lock){++++}-{4:4}, at: userfaultfd_release_all+0x153/0x480 mm/userfaultfd.c:1925 1 lock held by syz.6.4318/28380: #0: ffff888098abc620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888098abc620 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888098abc620 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.6.4318/28388: #0: ffff888098abc620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff888098abc620 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.6.4318/28393: #0: ffff888098abc620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888098abc620 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888098abc620 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 1 lock held by syz.3.4333/28844: #0: ffff888079ad01e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888079ad01e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888079ad01e0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 1 lock held by syz.3.4333/28845: #0: ffff888079ad01e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888079ad01e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888079ad01e0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.3.4333/28849: #0: ffff888079ad01e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff888079ad01e0 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.9.4351/29002: #0: ffff888051f2a8e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888051f2a8e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff888051f2a8e0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.9.4351/29005: #0: ffff888051f2a8e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff888051f2a8e0 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.5.4389/30247: #0: ffff8880361bc620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff8880361bc620 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff8880361bc620 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.5.4389/30248: #0: ffff8880361bc620 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff8880361bc620 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.8.4413/30548: #0: ffff88801b0732a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff88801b0732a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff88801b0732a0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.8.4413/30549: #0: ffff88801b0732a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff88801b0732a0 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.0.4420/30591: #0: ffff88801b0728e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff88801b0728e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff88801b0728e0 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.0.4420/30592: #0: ffff88801b0728e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff88801b0728e0 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 3 locks held by kworker/u8:9/30628: #0: ffff88801b081148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204 #1: ffffc9000c827d80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 #2: ffffffff8feda988 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:281 1 lock held by syz.7.4442/31095: #0: ffff88805b1f1f20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff88805b1f1f20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm kernel/exit.c:546 [inline] #0: ffff88805b1f1f20 (&mm->mmap_lock){++++}-{4:4}, at: do_exit+0x8b2/0x2d70 kernel/exit.c:925 2 locks held by syz.7.4442/31096: #0: ffff88805b1f1f20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:106 [inline] #0: ffff88805b1f1f20 (&mm->mmap_lock){++++}-{4:4}, at: mmu_notifier_register+0x2e/0x190 mm/mmu_notifier.c:704 #1: ffffffff8e34c328 (mm_all_locks_mutex){+.+.}-{4:4}, at: mm_take_all_locks+0x10a/0xbd0 mm/vma.c:2056 1 lock held by syz.4.4443/31105: #0: ffffffff8feda988 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8feda988 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x38/0x230 drivers/net/tun.c:3517 2 locks held by syz.2.4444/31107: #0: ffffffff8feda988 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8feda988 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x38/0x230 drivers/net/tun.c:3517 #1: ffffffff8e1c6e38 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline] watchdog+0xf14/0x1240 kernel/hung_task.c:397 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 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: 6870 Comm: kworker/u8:16 Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: bat_events batadv_nc_worker RIP: 0010:iterate_chain_key kernel/locking/lockdep.c:450 [inline] RIP: 0010:__lock_acquire+0xd44/0x3c40 kernel/locking/lockdep.c:5214 Code: d8 29 d3 89 d9 89 d3 01 c2 c1 c3 08 31 cb 89 d9 29 d8 01 d3 c1 c1 10 89 de 31 c8 89 c1 29 c2 01 d8 c1 c9 0d 31 d1 89 ca 29 ce <01> c8 c1 c2 04 89 c0 31 f2 48 c1 e2 20 48 09 c2 48 b8 00 00 00 00 RSP: 0018:ffffc900042ff8d0 EFLAGS: 00000087 RAX: 00000000e359a36e RBX: 000000001930ecb9 RCX: 000000002e16f9a1 RDX: 000000002e16f9a1 RSI: 00000000eb19f318 RDI: ffffffff96ea9e48 RBP: ffffffff96ea9d40 R08: 0000000000000000 R09: fffffbfff2dc99b5 R10: ffffffff96e4cdaf R11: 0000000000000002 R12: ffffed1005cf95e3 R13: ffff88802e7ca440 R14: 0000000000000005 R15: ffff88802e7caf70 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000c2c0 CR3: 000000000df7e000 CR4: 00000000003526f0 Call Trace: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] batadv_nc_purge_paths+0xca/0x390 net/batman-adv/network-coding.c:442 batadv_nc_worker+0x913/0x1060 net/batman-adv/network-coding.c:720 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244