INFO: task syz-executor.4:17318 blocked for more than 143 seconds. Not tainted 6.1.0-rc3-syzkaller-00332-g089d1c31224e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:26840 pid:17318 ppid:17240 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8fc/0xda0 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 rwsem_down_write_slowpath+0xfdc/0x14a0 kernel/locking/rwsem.c:1190 __down_write_common kernel/locking/rwsem.c:1305 [inline] __down_write kernel/locking/rwsem.c:1314 [inline] down_write+0x231/0x270 kernel/locking/rwsem.c:1563 filemap_invalidate_lock include/linux/fs.h:801 [inline] blkdev_fallocate+0x21f/0x390 block/fops.c:641 vfs_fallocate+0x515/0x670 fs/open.c:323 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __x64_sys_fallocate+0xb9/0x100 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe48ee8b5a9 RSP: 002b:00007fe48fbc7168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007fe48efabf80 RCX: 00007fe48ee8b5a9 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007fe48eee67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000001002000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffde4ce860f R14: 00007fe48fbc7300 R15: 0000000000022000 INFO: task syz-executor.0:17331 blocked for more than 143 seconds. Not tainted 6.1.0-rc3-syzkaller-00332-g089d1c31224e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27336 pid:17331 ppid:17272 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8fc/0xda0 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 rwsem_down_write_slowpath+0xfdc/0x14a0 kernel/locking/rwsem.c:1190 __down_write_common kernel/locking/rwsem.c:1305 [inline] __down_write kernel/locking/rwsem.c:1314 [inline] down_write+0x231/0x270 kernel/locking/rwsem.c:1563 filemap_invalidate_lock include/linux/fs.h:801 [inline] blkdev_fallocate+0x21f/0x390 block/fops.c:641 vfs_fallocate+0x515/0x670 fs/open.c:323 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __x64_sys_fallocate+0xb9/0x100 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f494508b5a9 RSP: 002b:00007f4945e5b168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f49451abf80 RCX: 00007f494508b5a9 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007f49450e67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000001002000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd74e6bb9f R14: 00007f4945e5b300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8cd1f5b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8cd1fdb0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/28: #0: ffffffff8cd1f3e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by getty/3287: #0: ffff88814ab54098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2177 3 locks held by kworker/u4:16/4725: 1 lock held by syz-executor.5/17217: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_fault+0x51f/0x1060 mm/filemap.c:3142 1 lock held by syz-executor.2/17227: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_fault+0x51f/0x1060 mm/filemap.c:3142 1 lock held by syz-executor.1/17305: 1 lock held by syz-executor.4/17318: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.5/17320: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_fault+0x51f/0x1060 mm/filemap.c:3142 1 lock held by syz-executor.0/17331: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.2/17359: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_fault+0x51f/0x1060 mm/filemap.c:3142 1 lock held by syz-executor.3/17371: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xe9/0x820 mm/readahead.c:226 3 locks held by kworker/0:1/17373: #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262 #1: ffffc90007bbfd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264 #2: ffff8880ac345240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2df/0x58a0 drivers/net/netdevsim/fib.c:1489 1 lock held by syz-executor.0/17417: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.1/17427: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.4/17449: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.5/17475: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xe9/0x820 mm/readahead.c:226 1 lock held by syz-executor.2/17478: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xe9/0x820 mm/readahead.c:226 1 lock held by syz-executor.3/17500: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xe9/0x820 mm/readahead.c:226 3 locks held by kworker/u4:11/17590: 1 lock held by syz-executor.1/17670: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.5/17686: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xe9/0x820 mm/readahead.c:226 1 lock held by syz-executor.5/17687: #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] #0: ffff888140e2bfc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xe9/0x820 mm/readahead.c:226 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc3-syzkaller-00332-g089d1c31224e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x19b/0x3e0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xcf5/0xd40 kernel/hung_task.c:377 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2964 Comm: klogd Not tainted 6.1.0-rc3-syzkaller-00332-g089d1c31224e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:should_fail+0x13e/0x4e0 lib/fault-inject.c:111 Code: 33 eb 49 65 4c 8b 24 25 00 6f 02 00 49 81 c4 34 15 00 00 4c 89 e3 48 c1 eb 03 42 8a 04 2b 84 c0 0f 85 7e 02 00 00 41 8b 2c 24 <85> ed 0f 84 ea fe ff ff ff cd 42 8a 04 2b 84 c0 0f 85 9f 02 00 00 RSP: 0018:ffffc9000306f7a8 EFLAGS: 00000246 RAX: 0000000080000000 RBX: 1ffff1100fc569f6 RCX: ffffc9000306f703 RDX: ffff88807e2b3a80 RSI: 00000000000000f0 RDI: ffffffff8ce0cda0 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1c4f2be R10: fffffbfff1c4f2be R11: 1ffffffff1c4f2bd R12: ffff88807e2b4fb4 R13: dffffc0000000000 R14: 00000000000000f0 R15: ffffffff8ce0cda0 FS: 00007fef8c809800(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0fbc582058 CR3: 00000000281ae000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: should_failslab+0x5/0x20 mm/slab_common.c:1468 slab_pre_alloc_hook mm/slab.h:712 [inline] slab_alloc_node mm/slub.c:3318 [inline] kmem_cache_alloc_node+0x6b/0x340 mm/slub.c:3443 __alloc_skb+0xd5/0x620 net/core/skbuff.c:497 alloc_skb include/linux/skbuff.h:1267 [inline] alloc_skb_with_frags+0xb4/0x780 net/core/skbuff.c:6124 sock_alloc_send_pskb+0x930/0xa70 net/core/sock.c:2719 unix_dgram_sendmsg+0x5b3/0x2050 net/unix/af_unix.c:1943 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] __sys_sendto+0x46d/0x5f0 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2125 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fef8c9a50ac Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10 RSP: 002b:00007ffcff1e6198 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fef8c9a50ac RDX: 000000000000003b RSI: 00005562ee89dd10 RDI: 0000000000000003 RBP: 00005562ee897910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014 R13: 0000000000000001 R14: 00007fef8cb2077d R15: 00007ffcff1e62a8