INFO: task syz-executor274:3618 blocked for more than 143 seconds. Not tainted 5.19.0-rc5-syzkaller-00105-g9f09069cde34 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor274 state:D stack:28128 pid: 3618 ppid: 3614 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 rwsem_down_write_slowpath+0x68a/0x11a0 kernel/locking/rwsem.c:1172 __down_write_common kernel/locking/rwsem.c:1287 [inline] __down_write_common kernel/locking/rwsem.c:1284 [inline] __down_write kernel/locking/rwsem.c:1296 [inline] down_write+0x135/0x150 kernel/locking/rwsem.c:1543 filemap_invalidate_lock include/linux/fs.h:786 [inline] blkdev_fallocate+0x1e2/0x410 block/fops.c:637 vfs_fallocate+0x487/0xe00 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+0xcf/0x140 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7fd59937ce29 RSP: 002b:00007ffe9efbbb58 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fd59937ce29 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 7fffffffffffffff R11: 0000000000000246 R12: 00007fd599340600 R13: 0000000000000000 R14: 00007ffe9efbbb80 R15: 00007ffe9efbbb70 INFO: task syz-executor274:3619 blocked for more than 143 seconds. Not tainted 5.19.0-rc5-syzkaller-00105-g9f09069cde34 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor274 state:D stack:28208 pid: 3619 ppid: 3612 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 rwsem_down_write_slowpath+0x68a/0x11a0 kernel/locking/rwsem.c:1172 __down_write_common kernel/locking/rwsem.c:1287 [inline] __down_write_common kernel/locking/rwsem.c:1284 [inline] __down_write kernel/locking/rwsem.c:1296 [inline] down_write+0x135/0x150 kernel/locking/rwsem.c:1543 filemap_invalidate_lock include/linux/fs.h:786 [inline] blkdev_fallocate+0x1e2/0x410 block/fops.c:637 vfs_fallocate+0x487/0xe00 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+0xcf/0x140 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7fd59937ce29 RSP: 002b:00007ffe9efbbb58 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fd59937ce29 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 7fffffffffffffff R11: 0000000000000246 R12: 00007fd599340600 R13: 0000000000000000 R14: 00007ffe9efbbb80 R15: 00007ffe9efbbb70 INFO: task syz-executor274:3636 blocked for more than 143 seconds. Not tainted 5.19.0-rc5-syzkaller-00105-g9f09069cde34 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor274 state:D stack:27616 pid: 3636 ppid: 3611 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0xa00/0x4b50 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 rwsem_down_write_slowpath+0x68a/0x11a0 kernel/locking/rwsem.c:1172 __down_write_common kernel/locking/rwsem.c:1287 [inline] __down_write_common kernel/locking/rwsem.c:1284 [inline] __down_write kernel/locking/rwsem.c:1296 [inline] down_write+0x135/0x150 kernel/locking/rwsem.c:1543 filemap_invalidate_lock include/linux/fs.h:786 [inline] blkdev_fallocate+0x1e2/0x410 block/fops.c:637 vfs_fallocate+0x487/0xe00 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+0xcf/0x140 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7fd59937ce29 RSP: 002b:00007ffe9efbbb58 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fd59937ce29 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 7fffffffffffffff R11: 0000000000000246 R12: 000000000000c4c6 R13: 00007ffe9efbbb6c R14: 00007ffe9efbbb80 R15: 00007ffe9efbbb70 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8bd83b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491 3 locks held by kworker/1:1H/108: 3 locks held by klogd/2965: 2 locks held by getty/3290: #0: ffff88814ab7d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90001c382e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124 1 lock held by syz-executor274/3613: #0: ffff88814056a9c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:786 [inline] #0: ffff88814056a9c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e2/0x410 block/fops.c:637 1 lock held by syz-executor274/3618: #0: ffff88814056a9c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:786 [inline] #0: ffff88814056a9c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e2/0x410 block/fops.c:637 1 lock held by syz-executor274/3619: #0: ffff88814056a9c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:786 [inline] #0: ffff88814056a9c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e2/0x410 block/fops.c:637 1 lock held by syz-executor274/3636: #0: ffff88814056a9c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:786 [inline] #0: ffff88814056a9c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e2/0x410 block/fops.c:637 1 lock held by syz-executor274/3637: #0: ffff88814056a9c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:786 [inline] #0: ffff88814056a9c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e2/0x410 block/fops.c:637 1 lock held by syz-executor274/3644: #0: ffff88814056a9c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:786 [inline] #0: ffff88814056a9c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e2/0x410 block/fops.c:637 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.19.0-rc5-syzkaller-00105-g9f09069cde34 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:369 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2965 Comm: klogd Not tainted 5.19.0-rc5-syzkaller-00105-g9f09069cde34 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:121 [inline] RIP: 0010:lock_release+0x124/0x780 kernel/locking/lockdep.c:5678 Code: 85 e8 02 00 00 65 4c 8b 34 25 80 6f 02 00 49 8d be 5c 0a 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a4 05 00 00 45 RSP: 0018:ffffc9000306f6b8 EFLAGS: 00000807 RAX: dffffc0000000000 RBX: ffffffff8dbb264c RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88807cd92bdc RBP: 1ffff9200060ded9 R08: 0000000000000000 R09: ffffffff8dbaf297 R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880b9b357a0 R13: 0000000000000001 R14: ffff88807cd92180 R15: 0000000000000000 FS: 00007fa832290800(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a578ea0000 CR3: 000000007cc59000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: local_lock_release include/linux/local_lock_internal.h:38 [inline] free_unref_page+0x344/0x6a0 mm/page_alloc.c:3459 slab_destroy mm/slab.c:1615 [inline] slabs_destroy+0x89/0xc0 mm/slab.c:1635 cache_flusharray mm/slab.c:3397 [inline] ___cache_free+0x34e/0x670 mm/slab.c:3460 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x4f/0x1b0 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x97/0xb0 mm/kasan/common.c:446 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:750 [inline] slab_alloc_node mm/slab.c:3239 [inline] kmem_cache_alloc_node+0x2ea/0x590 mm/slab.c:3593 __alloc_skb+0x215/0x340 net/core/skbuff.c:414 alloc_skb include/linux/skbuff.h:1426 [inline] alloc_skb_with_frags+0x93/0x730 net/core/skbuff.c:5992 sock_alloc_send_pskb+0x793/0x920 net/core/sock.c:2662 unix_dgram_sendmsg+0x425/0x1ad0 net/unix/af_unix.c:1895 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 __sys_sendto+0x21a/0x320 net/socket.c:2119 __do_sys_sendto net/socket.c:2131 [inline] __se_sys_sendto net/socket.c:2127 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2127 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7fa83242c0ac 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:00007ffdb6f6fbb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa83242c0ac RDX: 000000000000004e RSI: 00005588c8440100 RDI: 0000000000000003 RBP: 00005588c843a2c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014 R13: 0000000000000001 R14: 00007fa8325a777d R15: 00007ffdb6f6fcc8 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.129 msecs ---------------- Code disassembly (best guess): 0: 85 e8 test %ebp,%eax 2: 02 00 add (%rax),%al 4: 00 65 4c add %ah,0x4c(%rbp) 7: 8b 34 25 80 6f 02 00 mov 0x26f80,%esi e: 49 8d be 5c 0a 00 00 lea 0xa5c(%r14),%rdi 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 89 fa mov %rdi,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx * 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 08 jl 0x3f 37: 84 d2 test %dl,%dl 39: 0f 85 a4 05 00 00 jne 0x5e3 3f: 45 rex.RB