INFO: task syz.0.458:7397 blocked for more than 143 seconds. Not tainted 6.14.0-rc3-syzkaller-00607-g5d6ba5ab8582 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.458 state:D stack:25344 pid:7397 tgid:7394 ppid:5844 task_flags:0x480140 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5378 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6857 blk_mq_freeze_queue_wait+0xff/0x190 block/blk-mq.c:200 blk_mq_freeze_queue include/linux/blk-mq.h:920 [inline] queue_limits_commit_update_frozen+0x6e/0x330 block/blk-settings.c:467 nbd_set_size+0x5ba/0x860 drivers/block/nbd.c:374 nbd_genl_size_set+0x332/0x410 drivers/block/nbd.c:2048 nbd_genl_reconfigure+0x4b5/0x1c40 drivers/block/nbd.c:2351 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xb1f/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x206/0x480 net/netlink/af_netlink.c:2544 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1323 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1349 netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:733 ____sys_sendmsg+0x53a/0x860 net/socket.c:2573 ___sys_sendmsg net/socket.c:2627 [inline] __sys_sendmsg+0x269/0x350 net/socket.c:2659 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6eafd8cde9 RSP: 002b:00007f6eb0b90038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f6eaffa5fa0 RCX: 00007f6eafd8cde9 RDX: 0000000020000040 RSI: 0000400000000600 RDI: 0000000000000005 RBP: 00007f6eafe0e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6eaffa5fa0 R15: 00007fff154f2ce8 INFO: task syz.0.458:7404 blocked for more than 143 seconds. Not tainted 6.14.0-rc3-syzkaller-00607-g5d6ba5ab8582 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.458 state:D stack:23736 pid:7404 tgid:7394 ppid:5844 task_flags:0x400140 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5378 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6857 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914 __mutex_lock_common kernel/locking/mutex.c:662 [inline] __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x206/0x480 net/netlink/af_netlink.c:2544 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1323 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1349 netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:733 __sys_sendto+0x363/0x4c0 net/socket.c:2187 __do_sys_sendto net/socket.c:2194 [inline] __se_sys_sendto net/socket.c:2190 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2190 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6eafd8ec7c RSP: 002b:00007f6eb0b6dec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f6eb0b6dfc0 RCX: 00007f6eafd8ec7c RDX: 0000000000000024 RSI: 00007f6eb0b6e010 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007f6eb0b6df14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000005 R13: 00007f6eb0b6df68 R14: 00007f6eb0b6e010 R15: 0000000000000000 INFO: task syz.0.458:7411 blocked for more than 144 seconds. Not tainted 6.14.0-rc3-syzkaller-00607-g5d6ba5ab8582 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.458 state:D stack:27352 pid:7411 tgid:7394 ppid:5844 task_flags:0x400140 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5378 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6857 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914 __mutex_lock_common kernel/locking/mutex.c:662 [inline] __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x206/0x480 net/netlink/af_netlink.c:2544 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1323 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1349 netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:733 __sys_sendto+0x363/0x4c0 net/socket.c:2187 __do_sys_sendto net/socket.c:2194 [inline] __se_sys_sendto net/socket.c:2190 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2190 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6eafd8ec7c RSP: 002b:00007f6eb0b4cec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f6eb0b4cfc0 RCX: 00007f6eafd8ec7c RDX: 0000000000000028 RSI: 00007f6eb0b4d010 RDI: 0000000000000008 RBP: 0000000000000000 R08: 00007f6eb0b4cf14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000008 R13: 00007f6eb0b4cf68 R14: 00007f6eb0b4d010 R15: 0000000000000000 INFO: task syz.4.461:7401 blocked for more than 144 seconds. Not tainted 6.14.0-rc3-syzkaller-00607-g5d6ba5ab8582 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.461 state:D stack:23736 pid:7401 tgid:7400 ppid:5831 task_flags:0x400140 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5378 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6857 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914 __mutex_lock_common kernel/locking/mutex.c:662 [inline] __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x206/0x480 net/netlink/af_netlink.c:2544 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1323 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1349 netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:733 __sys_sendto+0x363/0x4c0 net/socket.c:2187 __do_sys_sendto net/socket.c:2194 [inline] __se_sys_sendto net/socket.c:2190 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2190 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f287af8ec7c RSP: 002b:00007f287bd6aec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f287bd6afc0 RCX: 00007f287af8ec7c RDX: 0000000000000020 RSI: 00007f287bd6b010 RDI: 0000000000000006 RBP: 0000000000000000 R08: 00007f287bd6af14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000006 R13: 00007f287bd6af68 R14: 00007f287bd6b010 R15: 0000000000000000 INFO: task syz.3.463:7410 blocked for more than 144 seconds. Not tainted 6.14.0-rc3-syzkaller-00607-g5d6ba5ab8582 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.463 state:D stack:24408 pid:7410 tgid:7409 ppid:5832 task_flags:0x400140 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5378 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6857 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914 __mutex_lock_common kernel/locking/mutex.c:662 [inline] __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x206/0x480 net/netlink/af_netlink.c:2544 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1323 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1349 netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:733 ____sys_sendmsg+0x53a/0x860 net/socket.c:2573 ___sys_sendmsg net/socket.c:2627 [inline] __sys_sendmsg+0x269/0x350 net/socket.c:2659 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f779bf8cde9 RSP: 002b:00007f779cea1038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f779c1a5fa0 RCX: 00007f779bf8cde9 RDX: 0000000000044850 RSI: 0000400000000100 RDI: 0000000000000003 RBP: 00007f779c00e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f779c1a5fa0 R15: 00007ffee4cfffc8 INFO: task syz.1.468:7437 blocked for more than 145 seconds. Not tainted 6.14.0-rc3-syzkaller-00607-g5d6ba5ab8582 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.468 state:D stack:23736 pid:7437 tgid:7436 ppid:5836 task_flags:0x400140 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5378 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6857 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914 __mutex_lock_common kernel/locking/mutex.c:662 [inline] __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x206/0x480 net/netlink/af_netlink.c:2544 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1323 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1349 netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:733 __sys_sendto+0x363/0x4c0 net/socket.c:2187 __do_sys_sendto net/socket.c:2194 [inline] __se_sys_sendto net/socket.c:2190 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2190 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f59d138ec7c RSP: 002b:00007f59d212bec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f59d212bfc0 RCX: 00007f59d138ec7c RDX: 0000000000000024 RSI: 00007f59d212c010 RDI: 0000000000000007 RBP: 0000000000000000 R08: 00007f59d212bf14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000007 R13: 00007f59d212bf68 R14: 00007f59d212c010 R15: 0000000000000000 INFO: task syz.2.475:7455 blocked for more than 145 seconds. Not tainted 6.14.0-rc3-syzkaller-00607-g5d6ba5ab8582 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.475 state:D stack:26968 pid:7455 tgid:7454 ppid:5834 task_flags:0x400040 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5378 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6857 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914 __mutex_lock_common kernel/locking/mutex.c:662 [inline] __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x206/0x480 net/netlink/af_netlink.c:2544 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1323 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1349 netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:733 __sys_sendto+0x363/0x4c0 net/socket.c:2187 __do_sys_sendto net/socket.c:2194 [inline] __se_sys_sendto net/socket.c:2190 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2190 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f023818ec7c RSP: 002b:00007f0238f73ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f0238f73fc0 RCX: 00007f023818ec7c RDX: 0000000000000020 RSI: 00007f0238f74010 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f0238f73f14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000004 R13: 00007f0238f73f68 R14: 00007f0238f74010 R15: 0000000000000000 INFO: task syz.2.475:7456 blocked for more than 145 seconds. Not tainted 6.14.0-rc3-syzkaller-00607-g5d6ba5ab8582 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.475 state:D stack:24432 pid:7456 tgid:7454 ppid:5834 task_flags:0x400140 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5378 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6857 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914 __mutex_lock_common kernel/locking/mutex.c:662 [inline] __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x206/0x480 net/netlink/af_netlink.c:2544 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1323 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1349 netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:733 __sys_sendto+0x363/0x4c0 net/socket.c:2187 __do_sys_sendto net/socket.c:2194 [inline] __se_sys_sendto net/socket.c:2190 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2190 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f023818ec7c RSP: 002b:00007f0238f52ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f0238f52fc0 RCX: 00007f023818ec7c RDX: 0000000000000020 RSI: 00007f0238f53010 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007f0238f52f14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000005 R13: 00007f0238f52f68 R14: 00007f0238f53010 R15: 0000000000000000 INFO: task syz.2.475:7458 blocked for more than 146 seconds. Not tainted 6.14.0-rc3-syzkaller-00607-g5d6ba5ab8582 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.475 state:D stack:26968 pid:7458 tgid:7454 ppid:5834 task_flags:0x400040 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5378 [inline] __schedule+0x190e/0x4c90 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6857 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914 __mutex_lock_common kernel/locking/mutex.c:662 [inline] __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730 genl_lock net/netlink/genetlink.c:35 [inline] genl_op_lock net/netlink/genetlink.c:60 [inline] genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x206/0x480 net/netlink/af_netlink.c:2544 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1323 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1349 netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:733 __sys_sendto+0x363/0x4c0 net/socket.c:2187 __do_sys_sendto net/socket.c:2194 [inline] __se_sys_sendto net/socket.c:2190 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2190 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f023818ec7c RSP: 002b:00007f0238f31ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f0238f31fc0 RCX: 00007f023818ec7c RDX: 0000000000000020 RSI: 00007f0238f32010 RDI: 0000000000000008 RBP: 0000000000000000 R08: 00007f0238f31f14 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000008 R13: 00007f0238f31f68 R14: 00007f0238f32010 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8eb38f60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8eb38f60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8eb38f60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746 2 locks held by kworker/u8:10/3497: 2 locks held by getty/5601: #0: ffff8880357420a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x616/0x1770 drivers/tty/n_tty.c:2211 1 lock held by udevd/5848: #0: ffff8880256ae4c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xf0/0xc50 block/bdev.c:903 6 locks held by syz.0.458/7397: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 #2: ffff8880256bf198 (&nbd->config_lock){+.+.}-{4:4}, at: nbd_genl_reconfigure+0x42d/0x1c40 drivers/block/nbd.c:2342 #3: ffff8880252cd918 (&q->limits_lock){+.+.}-{4:4}, at: queue_limits_start_update include/linux/blkdev.h:949 [inline] #3: ffff8880252cd918 (&q->limits_lock){+.+.}-{4:4}, at: nbd_set_size+0x298/0x860 drivers/block/nbd.c:354 #4: ffff8880252cd358 (&q->q_usage_counter(io)#49){++++}-{0:0}, at: blk_mq_freeze_queue include/linux/blk-mq.h:920 [inline] #4: ffff8880252cd358 (&q->q_usage_counter(io)#49){++++}-{0:0}, at: queue_limits_commit_update_frozen+0x6e/0x330 block/blk-settings.c:467 #5: ffff8880252cd390 (&q->q_usage_counter(queue)#33){+.+.}-{0:0}, at: blk_mq_freeze_queue include/linux/blk-mq.h:920 [inline] #5: ffff8880252cd390 (&q->q_usage_counter(queue)#33){+.+.}-{0:0}, at: queue_limits_commit_update_frozen+0x6e/0x330 block/blk-settings.c:467 2 locks held by syz.0.458/7404: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz.0.458/7411: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz.4.461/7401: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz.3.463/7410: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz.1.468/7437: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz.2.475/7455: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz.2.475/7456: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz.2.475/7458: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7463: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7465: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7467: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7485: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7491: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7508: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7510: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7512: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7518: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7537: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7557: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7561: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7569: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7575: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 2 locks held by syz-executor/7582: #0: ffffffff8ff392d0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8ff39188 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x122/0xec0 net/netlink/genetlink.c:1209 ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc3-syzkaller-00607-g5d6ba5ab8582 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline] watchdog+0x1058/0x10a0 kernel/hung_task.c:399 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 63 Comm: kworker/u8:5 Not tainted 6.14.0-rc3-syzkaller-00607-g5d6ba5ab8582 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: bat_events batadv_nc_worker RIP: 0010:mark_usage kernel/locking/lockdep.c:4625 [inline] RIP: 0010:__lock_acquire+0xb3e/0x2100 kernel/locking/lockdep.c:5182 Code: fc 11 00 00 83 3d 45 61 a0 0e 00 0f 84 17 09 00 00 83 7c 24 58 00 48 8b 6c 24 38 0f 84 f9 00 00 00 48 8b 5c 24 18 0f b6 04 13 <84> c0 0f 85 02 0e 00 00 41 8b 0f f7 c1 00 80 00 00 0f 85 bf 00 00 RSP: 0018:ffffc9000214f7b0 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 1ffff1100386c16c RCX: ffffffff819cbc52 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff94549928 RBP: ffff88801c360b40 R08: ffffffff9454992f R09: 1ffffffff28a9325 R10: dffffc0000000000 R11: fffffbfff28a9326 R12: ffff88801c360ad4 R13: ffff88801c360000 R14: 0000000000000002 R15: ffff88801c360b60 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffca726f88 CR3: 000000000e938000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] batadv_nc_purge_paths+0xe8/0x3b0 net/batman-adv/network-coding.c:442 batadv_nc_worker+0x365/0x610 net/batman-adv/network-coding.c:722 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3317 worker_thread+0x870/0xd30 kernel/workqueue.c:3398 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244