INFO: task systemd-udevd:7498 blocked for more than 143 seconds. Not tainted 5.13.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:systemd-udevd state:D stack:26648 pid: 7498 ppid: 3552 flags:0x00004024 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0xfa1/0x2510 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 io_schedule+0xba/0x130 kernel/sched/core.c:7214 wait_on_page_bit_common+0x406/0xa30 mm/filemap.c:1301 wait_on_page_bit mm/filemap.c:1362 [inline] wait_on_page_locked include/linux/pagemap.h:688 [inline] wait_on_page_read mm/filemap.c:3312 [inline] do_read_cache_page+0x63f/0xd00 mm/filemap.c:3355 read_mapping_page include/linux/pagemap.h:515 [inline] read_part_sector+0x12f/0x4b0 block/partitions/core.c:672 adfspart_check_ICS+0x95/0xae0 block/partitions/acorn.c:360 check_partition block/partitions/core.c:148 [inline] blk_add_partitions+0x39f/0xc70 block/partitions/core.c:609 bdev_disk_changed+0x1f0/0x410 fs/block_dev.c:1274 __blkdev_get+0x32e/0x8f0 fs/block_dev.c:1358 blkdev_get_by_dev fs/block_dev.c:1451 [inline] blkdev_get_by_dev+0x1a7/0x610 fs/block_dev.c:1423 blkdev_open+0xf6/0x220 fs/block_dev.c:1546 do_dentry_open+0x42a/0xfb0 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0xa0d/0x22e0 fs/namei.c:3494 do_filp_open+0x17f/0x3a0 fs/namei.c:3521 do_sys_openat2+0x11e/0x360 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_open fs/open.c:1211 [inline] __se_sys_open fs/open.c:1207 [inline] __x64_sys_open+0xfd/0x1a0 fs/open.c:1207 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f9e10453840 RSP: 002b:00007ffe5570acf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000055c2468f4070 RCX: 00007f9e10453840 RDX: 000055c2461e3fe3 RSI: 00000000000a0800 RDI: 000055c2468f28a0 RBP: 00007ffe5570ae70 R08: 000055c2461e3670 R09: 0000000000000010 R10: 00007f9e101cdd70 R11: 0000000000000246 R12: 00007ffe5570adc0 R13: 000055c2468f09f0 R14: 0000000000000003 R15: 000000000000000e INFO: task syz-executor.2:7508 blocked for more than 143 seconds. Not tainted 5.13.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:27504 pid: 7508 ppid: 6108 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0xfa1/0x2510 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104 blkdev_put+0x4a/0x480 fs/block_dev.c:1595 blkdev_close+0x8b/0xd0 fs/block_dev.c:1644 __fput+0x209/0x870 fs/file_table.c:280 task_work_run+0xc0/0x160 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x27b/0x280 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x40/0x80 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x418c1b RSP: 002b:00007ffc7ef5f5c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000418c1b RDX: 00000000000003e7 RSI: 0000001b314200bc RDI: 0000000000000004 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000001b314200c4 R10: 00007ffc7ef67090 R11: 0000000000000293 R12: 000000000055d9a0 R13: 000000000055d9a0 R14: 000000000055cf20 R15: 000000000055cf20 INFO: task syz-executor.2:7509 blocked for more than 143 seconds. Not tainted 5.13.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:27504 pid: 7509 ppid: 6108 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0xfa1/0x2510 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104 blkdev_put+0x4a/0x480 fs/block_dev.c:1595 blkdev_close+0x8b/0xd0 fs/block_dev.c:1644 __fput+0x209/0x870 fs/file_table.c:280 task_work_run+0xc0/0x160 kernel/task_work.c:164 get_signal+0x158a/0x1cb0 kernel/signal.c:2608 arch_do_signal_or_restart+0x2a8/0x1f80 arch/x86/kernel/signal.c:789 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x211/0x280 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x40/0x80 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x465ad9 RSP: 002b:00007f192ce25188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: fffffffffffffe00 RBX: 000000000055cf20 RCX: 0000000000465ad9 RDX: ffffffffffffffff RSI: 000000000000ab03 RDI: 0000000000000003 RBP: 00000000004af756 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000055cf20 R13: 00007ffc7ef5f55f R14: 00007f192ce25300 R15: 0000000000022000 INFO: task systemd-udevd:7510 blocked for more than 144 seconds. Not tainted 5.13.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:systemd-udevd state:D stack:26576 pid: 7510 ppid: 3552 flags:0x00004024 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0xfa1/0x2510 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 io_schedule+0xba/0x130 kernel/sched/core.c:7214 wait_on_page_bit_common+0x406/0xa30 mm/filemap.c:1301 wait_on_page_bit mm/filemap.c:1362 [inline] wait_on_page_locked include/linux/pagemap.h:688 [inline] wait_on_page_read mm/filemap.c:3312 [inline] do_read_cache_page+0x63f/0xd00 mm/filemap.c:3355 read_mapping_page include/linux/pagemap.h:515 [inline] read_part_sector+0x12f/0x4b0 block/partitions/core.c:672 adfspart_check_ICS+0x95/0xae0 block/partitions/acorn.c:360 check_partition block/partitions/core.c:148 [inline] blk_add_partitions+0x39f/0xc70 block/partitions/core.c:609 bdev_disk_changed+0x1f0/0x410 fs/block_dev.c:1274 __blkdev_get+0x32e/0x8f0 fs/block_dev.c:1358 blkdev_get_by_dev fs/block_dev.c:1451 [inline] blkdev_get_by_dev+0x1a7/0x610 fs/block_dev.c:1423 blkdev_open+0xf6/0x220 fs/block_dev.c:1546 do_dentry_open+0x42a/0xfb0 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0xa0d/0x22e0 fs/namei.c:3494 do_filp_open+0x17f/0x3a0 fs/namei.c:3521 do_sys_openat2+0x11e/0x360 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_open fs/open.c:1211 [inline] __se_sys_open fs/open.c:1207 [inline] __x64_sys_open+0xfd/0x1a0 fs/open.c:1207 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f9e10453840 RSP: 002b:00007ffe5570a708 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000055c2468f3a50 RCX: 00007f9e10453840 RDX: 000055c2461e3fe3 RSI: 00000000000a0800 RDI: 000055c2468f06b0 RBP: 00007ffe5570a880 R08: 000055c2461e3670 R09: 0000000000000010 R10: 00007f9e101cdd70 R11: 0000000000000246 R12: 00007ffe5570a7d0 R13: 000055c2468f0170 R14: 0000000000000003 R15: 000000000000000e INFO: task systemd-udevd:7515 blocked for more than 144 seconds. Not tainted 5.13.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:systemd-udevd state:D stack:26648 pid: 7515 ppid: 3552 flags:0x00004024 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0xfa1/0x2510 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 io_schedule+0xba/0x130 kernel/sched/core.c:7214 wait_on_page_bit_common+0x406/0xa30 mm/filemap.c:1301 wait_on_page_bit mm/filemap.c:1362 [inline] wait_on_page_locked include/linux/pagemap.h:688 [inline] wait_on_page_read mm/filemap.c:3312 [inline] do_read_cache_page+0x63f/0xd00 mm/filemap.c:3355 read_mapping_page include/linux/pagemap.h:515 [inline] read_part_sector+0x12f/0x4b0 block/partitions/core.c:672 adfspart_check_ICS+0x95/0xae0 block/partitions/acorn.c:360 check_partition block/partitions/core.c:148 [inline] blk_add_partitions+0x39f/0xc70 block/partitions/core.c:609 bdev_disk_changed+0x1f0/0x410 fs/block_dev.c:1274 __blkdev_get+0x32e/0x8f0 fs/block_dev.c:1358 blkdev_get_by_dev fs/block_dev.c:1451 [inline] blkdev_get_by_dev+0x1a7/0x610 fs/block_dev.c:1423 blkdev_open+0xf6/0x220 fs/block_dev.c:1546 do_dentry_open+0x42a/0xfb0 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0xa0d/0x22e0 fs/namei.c:3494 do_filp_open+0x17f/0x3a0 fs/namei.c:3521 do_sys_openat2+0x11e/0x360 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_open fs/open.c:1211 [inline] __se_sys_open fs/open.c:1207 [inline] __x64_sys_open+0xfd/0x1a0 fs/open.c:1207 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f9e10453840 RSP: 002b:00007ffe5570acf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000055c2468f09f0 RCX: 00007f9e10453840 RDX: 000055c2461e3fe3 RSI: 00000000000a0800 RDI: 000055c2468ed850 RBP: 00007ffe5570ae70 R08: 000055c2461e3670 R09: 0000000000000010 R10: 00007f9e101cdd70 R11: 0000000000000246 R12: 00007ffe5570adc0 R13: 000055c2468f35d0 R14: 0000000000000003 R15: 000000000000000e INFO: task syz-executor.0:7518 blocked for more than 144 seconds. Not tainted 5.13.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27504 pid: 7518 ppid: 6106 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0xfa1/0x2510 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104 blkdev_put+0x4a/0x480 fs/block_dev.c:1595 blkdev_close+0x8b/0xd0 fs/block_dev.c:1644 __fput+0x209/0x870 fs/file_table.c:280 task_work_run+0xc0/0x160 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x27b/0x280 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x40/0x80 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x418c1b RSP: 002b:00007fffc5603fd0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000418c1b RDX: 00000000000003e7 RSI: 0000001b312200bc RDI: 0000000000000004 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000001b312200c4 R10: 00007fffc5701090 R11: 0000000000000293 R12: 000000000055d9a0 R13: 000000000055d9a0 R14: 000000000055cf20 R15: 000000000055cf20 INFO: task syz-executor.0:7524 blocked for more than 145 seconds. Not tainted 5.13.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27504 pid: 7524 ppid: 6106 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0xfa1/0x2510 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104 blkdev_put+0x4a/0x480 fs/block_dev.c:1595 blkdev_close+0x8b/0xd0 fs/block_dev.c:1644 __fput+0x209/0x870 fs/file_table.c:280 task_work_run+0xc0/0x160 kernel/task_work.c:164 get_signal+0x158a/0x1cb0 kernel/signal.c:2608 arch_do_signal_or_restart+0x2a8/0x1f80 arch/x86/kernel/signal.c:789 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x211/0x280 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x40/0x80 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x465ad9 RSP: 002b:00007f46c1ad1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: fffffffffffffe00 RBX: 000000000055cf20 RCX: 0000000000465ad9 RDX: ffffffffffffffff RSI: 000000000000ab03 RDI: 0000000000000003 RBP: 00000000004af756 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000055cf20 R13: 00007fffc5603f6f R14: 00007f46c1ad1300 R15: 0000000000022000 INFO: task syz-executor.5:7537 blocked for more than 145 seconds. Not tainted 5.13.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27504 pid: 7537 ppid: 6114 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0xfa1/0x2510 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104 blkdev_put+0x4a/0x480 fs/block_dev.c:1595 blkdev_close+0x8b/0xd0 fs/block_dev.c:1644 __fput+0x209/0x870 fs/file_table.c:280 task_work_run+0xc0/0x160 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x27b/0x280 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x40/0x80 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x418c1b RSP: 002b:00007ffc26edfc10 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000418c1b RDX: 00000000000003e7 RSI: 0000001b31b200bc RDI: 0000000000000004 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000001b31b200c4 R10: 00007ffc26f13090 R11: 0000000000000293 R12: 000000000055d9a0 R13: 000000000055d9a0 R14: 000000000055cf20 R15: 000000000055cf20 INFO: task syz-executor.5:7538 blocked for more than 145 seconds. Not tainted 5.13.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27504 pid: 7538 ppid: 6114 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0xfa1/0x2510 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104 blkdev_put+0x4a/0x480 fs/block_dev.c:1595 blkdev_close+0x8b/0xd0 fs/block_dev.c:1644 __fput+0x209/0x870 fs/file_table.c:280 task_work_run+0xc0/0x160 kernel/task_work.c:164 get_signal+0x158a/0x1cb0 kernel/signal.c:2608 arch_do_signal_or_restart+0x2a8/0x1f80 arch/x86/kernel/signal.c:789 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x211/0x280 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x40/0x80 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x465ad9 RSP: 002b:00007fc77e3d8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: fffffffffffffe00 RBX: 000000000055cf20 RCX: 0000000000465ad9 RDX: ffffffffffffffff RSI: 000000000000ab03 RDI: 0000000000000003 RBP: 00000000004af756 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000055cf20 R13: 00007ffc26edfbaf R14: 00007fc77e3d8300 R15: 0000000000022000 INFO: task systemd-udevd:7550 blocked for more than 145 seconds. Not tainted 5.13.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:systemd-udevd state:D stack:26648 pid: 7550 ppid: 3552 flags:0x00004024 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0xfa1/0x2510 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 io_schedule+0xba/0x130 kernel/sched/core.c:7214 wait_on_page_bit_common+0x406/0xa30 mm/filemap.c:1301 wait_on_page_bit mm/filemap.c:1362 [inline] wait_on_page_locked include/linux/pagemap.h:688 [inline] wait_on_page_read mm/filemap.c:3312 [inline] do_read_cache_page+0x63f/0xd00 mm/filemap.c:3355 read_mapping_page include/linux/pagemap.h:515 [inline] read_part_sector+0x12f/0x4b0 block/partitions/core.c:672 adfspart_check_ICS+0x95/0xae0 block/partitions/acorn.c:360 check_partition block/partitions/core.c:148 [inline] blk_add_partitions+0x39f/0xc70 block/partitions/core.c:609 bdev_disk_changed+0x1f0/0x410 fs/block_dev.c:1274 __blkdev_get+0x32e/0x8f0 fs/block_dev.c:1358 blkdev_get_by_dev fs/block_dev.c:1451 [inline] blkdev_get_by_dev+0x1a7/0x610 fs/block_dev.c:1423 blkdev_open+0xf6/0x220 fs/block_dev.c:1546 do_dentry_open+0x42a/0xfb0 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0xa0d/0x22e0 fs/namei.c:3494 do_filp_open+0x17f/0x3a0 fs/namei.c:3521 do_sys_openat2+0x11e/0x360 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_open fs/open.c:1211 [inline] __se_sys_open fs/open.c:1207 [inline] __x64_sys_open+0xfd/0x1a0 fs/open.c:1207 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f9e10453840 RSP: 002b:00007ffe5570acf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000055c2468f09f0 RCX: 00007f9e10453840 RDX: 000055c2461e3fe3 RSI: 00000000000a0800 RDI: 000055c2468f91d0 RBP: 00007ffe5570ae70 R08: 000055c2461e3670 R09: 0000000000000010 R10: 00007f9e101cdd70 R11: 0000000000000246 R12: 00007ffe5570adc0 R13: 000055c2468ed850 R14: 0000000000000003 R15: 000000000000000e Showing all locks held in the system: 1 lock held by khungtaskd/1197: #0: ffffffff89db4000 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x28c kernel/locking/lockdep.c:6333 1 lock held by in:imklog/5914: #0: ffff88810f16b670 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:974 1 lock held by systemd-udevd/7498: #0: ffff888107b370a0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev fs/block_dev.c:1450 [inline] #0: ffff888107b370a0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x19d/0x610 fs/block_dev.c:1423 1 lock held by syz-executor.2/7508: #0: ffff888107b92120 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x4a/0x480 fs/block_dev.c:1595 1 lock held by syz-executor.2/7509: #0: ffff888107b92120 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x4a/0x480 fs/block_dev.c:1595 1 lock held by systemd-udevd/7510: #0: ffff888107be21e0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev fs/block_dev.c:1450 [inline] #0: ffff888107be21e0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x19d/0x610 fs/block_dev.c:1423 1 lock held by systemd-udevd/7515: #0: ffff888107b92120 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev fs/block_dev.c:1450 [inline] #0: ffff888107b92120 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x19d/0x610 fs/block_dev.c:1423 1 lock held by syz-executor.0/7518: #0: ffff888107b370a0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x4a/0x480 fs/block_dev.c:1595 1 lock held by syz-executor.0/7524: #0: ffff888107b370a0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x4a/0x480 fs/block_dev.c:1595 1 lock held by syz-executor.5/7537: #0: ffff888107be21e0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x4a/0x480 fs/block_dev.c:1595 1 lock held by syz-executor.5/7538: #0: ffff888107be21e0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x4a/0x480 fs/block_dev.c:1595 1 lock held by systemd-udevd/7550: #0: ffff888107b560e0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev fs/block_dev.c:1450 [inline] #0: ffff888107b560e0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x19d/0x610 fs/block_dev.c:1423 1 lock held by syz-executor.3/7552: #0: ffff888107bac160 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x4a/0x480 fs/block_dev.c:1595 1 lock held by syz-executor.3/7553: #0: ffff888107bac160 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x4a/0x480 fs/block_dev.c:1595 1 lock held by syz-executor.1/7555: #0: ffff888107b560e0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x4a/0x480 fs/block_dev.c:1595 1 lock held by syz-executor.1/7557: #0: ffff888107b560e0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x4a/0x480 fs/block_dev.c:1595 1 lock held by systemd-udevd/7561: #0: ffff888107bac160 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev fs/block_dev.c:1450 [inline] #0: ffff888107bac160 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x19d/0x610 fs/block_dev.c:1423 1 lock held by systemd-udevd/7565: #0: ffff888107bc61a0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev fs/block_dev.c:1450 [inline] #0: ffff888107bc61a0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x19d/0x610 fs/block_dev.c:1423 1 lock held by syz-executor.4/7580: #0: ffff888107bc61a0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x4a/0x480 fs/block_dev.c:1595 1 lock held by syz-executor.4/7583: #0: ffff888107bc61a0 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x4a/0x480 fs/block_dev.c:1595 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1197 Comm: khungtaskd Not tainted 5.13.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x10c/0x14b lib/dump_stack.c:120 nmi_cpu_backtrace.cold+0x2d/0xac lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x11f/0x170 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline] watchdog+0x9cf/0xc00 kernel/hung_task.c:294 kthread+0x36f/0x450 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 327 Comm: kworker/u4:5 Not tainted 5.13.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:trace_lock_acquire include/trace/events/lock.h:13 [inline] RIP: 0010:lock_acquire+0xc5/0x860 kernel/locking/lockdep.c:5483 Code: 08 00 00 00 48 89 d0 48 89 54 24 08 48 c1 f8 06 48 8d 3c c5 90 e7 7b 8b e8 e8 91 53 00 48 8b 54 24 08 48 0f a3 15 6b f0 24 0a <0f> 82 07 05 00 00 48 c7 c0 cc 1a 7c 8b 48 ba 00 00 00 00 00 fc ff RSP: 0018:ffffc90000da7b20 EFLAGS: 00000247 RAX: 0000000000000001 RBX: 1ffff920001b4f66 RCX: ffffffff8156f718 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff8b7be790 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8b7be797 R10: fffffbfff16f7cf2 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888120c592d8 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f6300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1eed681000 CR3: 0000000101b4c000 CR4: 0000000000350ee0 Call Trace: __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:359 [inline] batadv_nc_purge_paths+0xc0/0x2d0 net/batman-adv/network-coding.c:438 batadv_nc_worker+0x6d2/0xcd0 net/batman-adv/network-coding.c:718 process_one_work+0x84c/0x13d0 kernel/workqueue.c:2276 worker_thread+0x598/0xf80 kernel/workqueue.c:2422 kthread+0x36f/0x450 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294