INFO: task syz-executor.1:4731 blocked for more than 143 seconds. Not tainted 5.15.175-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:27512 pid: 4731 ppid: 4483 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5027 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373 schedule+0x11b/0x1f0 kernel/sched/core.c:6456 rwsem_down_write_slowpath+0xf0c/0x16a0 kernel/locking/rwsem.c:1165 filemap_invalidate_lock include/linux/fs.h:834 [inline] blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 vfs_fallocate+0x54a/0x6b0 fs/open.c:308 ksys_fallocate fs/open.c:331 [inline] __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __x64_sys_fallocate+0xb9/0x100 fs/open.c:337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7facf37ade69 RSP: 002b:00007facf2b2e0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007facf38dbf80 RCX: 00007facf37ade69 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007facf37fa47a R08: 0000000000000000 R09: 0000000000000000 R10: 7fffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007facf38dbf80 R15: 00007ffda08878e8 INFO: task syz-executor.2:4739 blocked for more than 143 seconds. Not tainted 5.15.175-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:27520 pid: 4739 ppid: 4479 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5027 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373 schedule+0x11b/0x1f0 kernel/sched/core.c:6456 rwsem_down_write_slowpath+0xf0c/0x16a0 kernel/locking/rwsem.c:1165 filemap_invalidate_lock include/linux/fs.h:834 [inline] blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 vfs_fallocate+0x54a/0x6b0 fs/open.c:308 ksys_fallocate fs/open.c:331 [inline] __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __x64_sys_fallocate+0xb9/0x100 fs/open.c:337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f9f71eb9e69 RSP: 002b:00007f9f7123a0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f9f71fe7f80 RCX: 00007f9f71eb9e69 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007f9f71f0647a R08: 0000000000000000 R09: 0000000000000000 R10: 7fffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f9f71fe7f80 R15: 00007ffeb2c555a8 INFO: task syz-executor.0:4747 blocked for more than 144 seconds. Not tainted 5.15.175-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27520 pid: 4747 ppid: 4488 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5027 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373 schedule+0x11b/0x1f0 kernel/sched/core.c:6456 rwsem_down_write_slowpath+0xf0c/0x16a0 kernel/locking/rwsem.c:1165 filemap_invalidate_lock include/linux/fs.h:834 [inline] blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 vfs_fallocate+0x54a/0x6b0 fs/open.c:308 ksys_fallocate fs/open.c:331 [inline] __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __x64_sys_fallocate+0xb9/0x100 fs/open.c:337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f8ebde8fe69 RSP: 002b:00007f8ebd2100c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f8ebdfbdf80 RCX: 00007f8ebde8fe69 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007f8ebdedc47a R08: 0000000000000000 R09: 0000000000000000 R10: 7fffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f8ebdfbdf80 R15: 00007ffec4c00f58 INFO: task syz-executor.4:4753 blocked for more than 144 seconds. Not tainted 5.15.175-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27520 pid: 4753 ppid: 4489 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5027 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373 schedule+0x11b/0x1f0 kernel/sched/core.c:6456 rwsem_down_write_slowpath+0xf0c/0x16a0 kernel/locking/rwsem.c:1165 filemap_invalidate_lock include/linux/fs.h:834 [inline] blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 vfs_fallocate+0x54a/0x6b0 fs/open.c:308 ksys_fallocate fs/open.c:331 [inline] __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __x64_sys_fallocate+0xb9/0x100 fs/open.c:337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f8b70328e69 RSP: 002b:00007f8b6f6a90c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f8b70456f80 RCX: 00007f8b70328e69 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007f8b7037547a R08: 0000000000000000 R09: 0000000000000000 R10: 7fffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f8b70456f80 R15: 00007ffda875d5c8 Showing all locks held in the system: 3 locks held by kworker/0:1/13: #0: ffff88802b509938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283 #1: ffffc90000d27d20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285 #2: ffffffff8dc419c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xcc/0x1720 net/ipv6/addrconf.c:4113 1 lock held by khungtaskd/27: #0: ffffffff8cb1fd20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by getty/3923: #0: ffff88802c7ab098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc90002cd62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158 4 locks held by kworker/u4:4/4192: 3 locks held by kworker/0:5/4692: #0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283 #1: ffffc9000301fd20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285 #2: ffff88805e8fa240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2cd/0x4120 drivers/net/netdevsim/fib.c:1480 2 locks held by kworker/0:6/4695: #0: ffff888017472138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283 #1: ffffc9000111fd20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285 1 lock held by syz-executor.3/4710: 1 lock held by syz-executor.1/4731: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.2/4739: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.0/4747: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.4/4753: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.3/4971: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.1/4978: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.2/4994: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.0/4996: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.4/4998: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.3/5028: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.1/5053: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.2/5059: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.0/5075: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.4/5077: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.3/5102: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.1/5113: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.2/5138: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.0/5155: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 1 lock held by syz-executor.4/5157: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 2 locks held by syz-executor.1/5180: #0: ffffffff8dc419c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8dc419c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x94c/0xee0 net/core/rtnetlink.c:5644 #1: ffffffff8cb242e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #1: ffffffff8cb242e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:845 1 lock held by syz-executor.3/5188: #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:834 [inline] #0: ffff888145f3cff8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x25e/0x4e0 block/fops.c:600 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xe72/0xeb0 kernel/hung_task.c:295 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 20 Comm: ksoftirqd/1 Not tainted 5.15.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:30 [inline] RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:52 [inline] RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:178 [inline] RIP: 0010:unwind_next_frame+0x521/0x1fa0 arch/x86/kernel/unwind_orc.c:448 Code: 89 e8 4c 29 f0 48 89 c1 48 c1 f9 02 48 c1 e8 3f 48 01 c8 48 83 e0 fe 49 8d 1c 46 48 89 d8 48 c1 e8 03 0f b6 04 10 84 c0 75 27 <48> 63 03 48 01 d8 48 8d 4b 04 4c 39 e8 4c 0f 46 f1 48 8d 43 fc 48 RSP: 0018:ffffc90000da7628 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff8e1f9d44 RCX: 0000000000000002 RDX: dffffc0000000000 RSI: ffffffff8e8be094 RDI: ffffffff8e1f9d10 RBP: ffffffff8e1f9d48 R08: 000000000000000f R09: ffffc90000da77d0 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8e1f9d3c R13: ffffffff81ca36fa R14: ffffffff8e1f9d40 R15: ffffc90000da76e0 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8a0324d866 CR3: 0000000024231000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kmem_cache_free+0x91/0x1f0 mm/slub.c:3515 __bio_chain_endio block/bio.c:315 [inline] bio_endio+0x3f/0x790 block/bio.c:1467 req_bio_endio block/blk-core.c:261 [inline] blk_update_request+0x87c/0x1470 block/blk-core.c:1441 blk_mq_end_request+0x3a/0x70 block/blk-mq.c:575 blk_complete_reqs block/blk-mq.c:587 [inline] blk_done_softirq+0xf2/0x130 block/blk-mq.c:592 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 run_ksoftirqd+0xc6/0x120 kernel/softirq.c:925 smpboot_thread_fn+0x51b/0x9d0 kernel/smpboot.c:164 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287