RDX: 00000000200000c0 RSI: 0000000000005412 RDI: 0000000000000007 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd1864686d4 R13: 00000000004c5a54 R14: 00000000004dbd30 R15: 0000000000000008 ====================================================== WARNING: possible circular locking dependency detected 4.19.90-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.3/13962 is trying to acquire lock: 000000000f08fd2b (console_owner){-.-.}, at: console_trylock_spinning kernel/printk/printk.c:1669 [inline] 000000000f08fd2b (console_owner){-.-.}, at: vprintk_emit+0x3d5/0x6d0 kernel/printk/printk.c:1936 but task is already holding lock: 0000000047b6acf3 (&(&port->lock)->rlock){-.-.}, at: pty_write+0xff/0x200 drivers/tty/pty.c:120 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&(&port->lock)->rlock){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152 tty_port_tty_get+0x22/0x90 drivers/tty/tty_port.c:288 tty_port_default_wakeup+0x16/0x40 drivers/tty/tty_port.c:47 tty_port_tty_wakeup+0x57/0x70 drivers/tty/tty_port.c:390 uart_write_wakeup+0x46/0x70 drivers/tty/serial/serial_core.c:103 serial8250_tx_chars+0x495/0xaf0 drivers/tty/serial/8250/8250_port.c:1806 serial8250_handle_irq.part.0+0x261/0x2b0 drivers/tty/serial/8250/8250_port.c:1879 serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1865 [inline] serial8250_default_handle_irq+0xc0/0x150 drivers/tty/serial/8250/8250_port.c:1895 serial8250_interrupt+0xfc/0x1e0 drivers/tty/serial/8250/8250_core.c:125 __handle_irq_event_percpu+0x144/0x8f0 kernel/irq/handle.c:149 handle_irq_event_percpu+0x74/0x160 kernel/irq/handle.c:189 handle_irq_event+0xa7/0x134 kernel/irq/handle.c:206 handle_edge_irq+0x25e/0x8d0 kernel/irq/chip.c:797 generic_handle_irq_desc include/linux/irqdesc.h:155 [inline] handle_irq+0x39/0x50 arch/x86/kernel/irq_64.c:87 do_IRQ+0x99/0x1d0 arch/x86/kernel/irq.c:246 ret_from_intr+0x0/0x1e native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:556 default_idle_call+0x36/0x90 kernel/sched/idle.c:93 cpuidle_idle_call kernel/sched/idle.c:153 [inline] do_idle+0x30c/0x4d0 kernel/sched/idle.c:263 cpu_startup_entry+0xc8/0xe0 kernel/sched/idle.c:369 start_secondary+0x3e8/0x5b0 arch/x86/kernel/smpboot.c:271 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 -> #1 (&port_lock_key){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152 serial8250_console_write+0x7ca/0x9f0 drivers/tty/serial/8250/8250_port.c:3247 univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:590 call_console_drivers kernel/printk/printk.c:1736 [inline] console_unlock+0xbdf/0x10d0 kernel/printk/printk.c:2429 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1937 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2012 register_console+0x77f/0xb90 kernel/printk/printk.c:2745 univ8250_console_init+0x3e/0x4b drivers/tty/serial/8250/8250_core.c:685 console_init+0x4f7/0x761 kernel/printk/printk.c:2831 start_kernel+0x59c/0x8c5 init/main.c:660 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:490 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:471 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 -> #0 (console_owner){-.-.}: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 console_trylock_spinning kernel/printk/printk.c:1690 [inline] vprintk_emit+0x412/0x6d0 kernel/printk/printk.c:1936 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2012 fail_dump lib/fault-inject.c:44 [inline] should_fail+0x6f1/0x85c lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:122 do_output_char+0x5f7/0x880 drivers/tty/n_tty.c:445 __process_echoes+0x3cd/0xa40 drivers/tty/n_tty.c:737 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xb29/0x2ab0 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2194 [inline] tty_ioctl+0xe91/0x1510 drivers/tty/tty_io.c:2580 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: console_owner --> &port_lock_key --> &(&port->lock)->rlock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&(&port->lock)->rlock); lock(&port_lock_key); lock(&(&port->lock)->rlock); lock(console_owner); *** DEADLOCK *** 4 locks held by syz-executor.3/13962: #0: 000000009ab38feb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000e2e6f19c (&o_tty->termios_rwsem/1){++++}, at: n_tty_receive_buf_common+0x8a/0x2ab0 drivers/tty/n_tty.c:1703 #2: 000000007440e088 (&ldata->output_lock){+.+.}, at: flush_echoes drivers/tty/n_tty.c:825 [inline] #2: 000000007440e088 (&ldata->output_lock){+.+.}, at: __receive_buf drivers/tty/n_tty.c:1646 [inline] #2: 000000007440e088 (&ldata->output_lock){+.+.}, at: n_tty_receive_buf_common+0xaec/0x2ab0 drivers/tty/n_tty.c:1740 #3: 0000000047b6acf3 (&(&port->lock)->rlock){-.-.}, at: pty_write+0xff/0x200 drivers/tty/pty.c:120 stack backtrace: CPU: 1 PID: 13962 Comm: syz-executor.3 Not tainted 4.19.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1221 check_prev_add kernel/locking/lockdep.c:1861 [inline] check_prevs_add kernel/locking/lockdep.c:1974 [inline] validate_chain kernel/locking/lockdep.c:2415 [inline] __lock_acquire+0x2e19/0x49c0 kernel/locking/lockdep.c:3411 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 console_trylock_spinning kernel/printk/printk.c:1690 [inline] vprintk_emit+0x412/0x6d0 kernel/printk/printk.c:1936 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2012 fail_dump lib/fault-inject.c:44 [inline] should_fail+0x6f1/0x85c lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x71/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x133/0x200 drivers/tty/pty.c:122 do_output_char+0x5f7/0x880 drivers/tty/n_tty.c:445 __process_echoes+0x3cd/0xa40 drivers/tty/n_tty.c:737 flush_echoes drivers/tty/n_tty.c:827 [inline] __receive_buf drivers/tty/n_tty.c:1646 [inline] n_tty_receive_buf_common+0xb29/0x2ab0 drivers/tty/n_tty.c:1740 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769 tiocsti drivers/tty/tty_io.c:2194 [inline] tty_ioctl+0xe91/0x1510 drivers/tty/tty_io.c:2580 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a919 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd186467c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd186467c90 RCX: 000000000045a919 RDX: 00000000200000c0 RSI: 0000000000005412 RDI: 0000000000000007 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd1864686d4 R13: 00000000004c5a54 R14: 00000000004dbd30 R15: 0000000000000008 net_ratelimit: 13 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop5' (000000003461e4bd): kobject_uevent_env protocol 88fb is buggy, dev hsr_slave_0 kobject: 'loop5' (000000003461e4bd): fill_kobj_path: path = '/devices/virtual/block/loop5' protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env protocol 88fb is buggy, dev hsr_slave_0 kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' protocol 88fb is buggy, dev hsr_slave_1 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 13969 Comm: syz-executor.2 Not tainted 4.19.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] kmem_cache_alloc+0x47/0x700 mm/slab.c:3557 skb_clone+0x156/0x3e0 net/core/skbuff.c:1284 __netlink_deliver_tap_skb net/netlink/af_netlink.c:296 [inline] __netlink_deliver_tap net/netlink/af_netlink.c:321 [inline] netlink_deliver_tap+0x97b/0xc20 net/netlink/af_netlink.c:334 netlink_deliver_tap_kernel net/netlink/af_netlink.c:343 [inline] netlink_unicast_kernel net/netlink/af_netlink.c:1316 [inline] netlink_unicast+0x5ae/0x730 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a919 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0325e45c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f0325e45c90 RCX: 000000000045a919 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0325e466d4 R13: 00000000004c9a1e R14: 00000000004e18f8 R15: 0000000000000006 CPU: 1 PID: 13968 Comm: syz-executor.5 Not tainted 4.19.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop3' (00000000c4003b97): kobject_uevent_env Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 syz_tun: refused to change device tx_queue_len should_fail_alloc_page mm/page_alloc.c:3086 [inline] prepare_alloc_pages mm/page_alloc.c:4344 [inline] __alloc_pages_nodemask+0x1ee/0x750 mm/page_alloc.c:4391 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2197 alloc_pages include/linux/gfp.h:532 [inline] pte_alloc_one+0x1b/0x1a0 arch/x86/mm/pgtable.c:35 do_huge_pmd_anonymous_page+0xa21/0x14e0 mm/huge_memory.c:697 kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' create_huge_pmd mm/memory.c:3932 [inline] __handle_mm_fault+0x2c80/0x3f80 mm/memory.c:4136 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 faultin_page mm/gup.c:530 [inline] __get_user_pages+0x609/0x1860 mm/gup.c:730 __get_user_pages_locked mm/gup.c:901 [inline] get_user_pages_unlocked+0x291/0x440 mm/gup.c:1024 kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env get_user_pages_fast+0x2e9/0x3b0 mm/gup.c:1891 iov_iter_get_pages+0x27d/0xee0 lib/iov_iter.c:1211 kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 af_alg_make_sg+0x9d/0x450 crypto/af_alg.c:405 hash_sendmsg+0x464/0xad0 crypto/algif_hash.c:99 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x3e2/0x920 net/socket.c:2115 __sys_sendmmsg+0x1bf/0x4e0 net/socket.c:2210 __do_sys_sendmmsg net/socket.c:2239 [inline] __se_sys_sendmmsg net/socket.c:2236 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2236 kobject: 'kvm' (00000000db175205): kobject_uevent_env do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a919 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' RSP: 002b:00007f84dd050c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f84dd050c90 RCX: 000000000045a919 RDX: 0000000000000002 RSI: 0000000020000f80 RDI: 0000000000000006 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f84dd0516d4 R13: 00000000004c92b4 R14: 00000000004e0ff8 R15: 0000000000000007 CPU: 1 PID: 13978 Comm: syz-executor.2 Not tainted 4.19.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc_node mm/slab.c:3304 [inline] kmem_cache_alloc_node+0x26c/0x710 mm/slab.c:3647 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] rtmsg_ifinfo_build_skb+0x74/0x1a0 net/core/rtnetlink.c:3343 rtmsg_ifinfo_event.part.0+0x43/0xe0 net/core/rtnetlink.c:3379 rtmsg_ifinfo_event net/core/rtnetlink.c:4826 [inline] rtnetlink_event+0x12c/0x150 net/core/rtnetlink.c:4819 notifier_call_chain+0xc2/0x230 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1747 call_netdevice_notifiers net/core/dev.c:1765 [inline] dev_change_tx_queue_len+0x148/0x210 net/core/dev.c:7685 do_setlink+0xa90/0x3670 net/core/rtnetlink.c:2471 rtnl_newlink+0xbad/0x1600 net/core/rtnetlink.c:3068 rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:4768 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4786 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a919 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0325e45c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f0325e45c90 RCX: 000000000045a919 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0325e466d4 R13: 00000000004c9a1e R14: 00000000004e18f8 R15: 0000000000000006 kobject: 'loop4' (00000000e59effd2): kobject_uevent_env syz_tun: refused to change device tx_queue_len kobject: 'loop4' (00000000e59effd2): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000003461e4bd): kobject_uevent_env Enabling of bearer rejected, failed to enable media kobject: 'loop5' (000000003461e4bd): fill_kobj_path: path = '/devices/virtual/block/loop5' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop3' (00000000c4003b97): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' CPU: 0 PID: 13991 Comm: syz-executor.5 Not tainted 4.19.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] kmem_cache_alloc+0x2ae/0x700 mm/slab.c:3557 ptlock_alloc+0x20/0x70 mm/memory.c:4833 ptlock_init include/linux/mm.h:1885 [inline] pgtable_page_ctor include/linux/mm.h:1919 [inline] pte_alloc_one+0x6d/0x1a0 arch/x86/mm/pgtable.c:38 do_huge_pmd_anonymous_page+0xa21/0x14e0 mm/huge_memory.c:697 create_huge_pmd mm/memory.c:3932 [inline] __handle_mm_fault+0x2c80/0x3f80 mm/memory.c:4136 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 faultin_page mm/gup.c:530 [inline] __get_user_pages+0x609/0x1860 mm/gup.c:730 __get_user_pages_locked mm/gup.c:901 [inline] get_user_pages_unlocked+0x291/0x440 mm/gup.c:1024 get_user_pages_fast+0x2e9/0x3b0 mm/gup.c:1891 iov_iter_get_pages+0x27d/0xee0 lib/iov_iter.c:1211 af_alg_make_sg+0x9d/0x450 crypto/af_alg.c:405 hash_sendmsg+0x464/0xad0 crypto/algif_hash.c:99 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x3e2/0x920 net/socket.c:2115 __sys_sendmmsg+0x1bf/0x4e0 net/socket.c:2210 __do_sys_sendmmsg net/socket.c:2239 [inline] __se_sys_sendmmsg net/socket.c:2236 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2236 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a919 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f84dd050c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f84dd050c90 RCX: 000000000045a919 RDX: 0000000000000002 RSI: 0000000020000f80 RDI: 0000000000000006 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f84dd0516d4 R13: 00000000004c92b4 R14: 00000000004e0ff8 R15: 0000000000000007 CPU: 1 PID: 13996 Comm: syz-executor.2 Not tainted 4.19.90-syzkaller #0 protocol 88fb is buggy, dev hsr_slave_1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc_node mm/slab.c:3304 [inline] kmem_cache_alloc_node+0x26c/0x710 mm/slab.c:3647 __alloc_skb+0xd5/0x5f0 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] rtmsg_ifinfo_build_skb+0x74/0x1a0 net/core/rtnetlink.c:3343 rtmsg_ifinfo_event.part.0+0x43/0xe0 net/core/rtnetlink.c:3379 kobject: 'loop5' (000000003461e4bd): kobject_uevent_env rtmsg_ifinfo_event net/core/rtnetlink.c:4826 [inline] rtnetlink_event+0x12c/0x150 net/core/rtnetlink.c:4819 notifier_call_chain+0xc2/0x230 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 kobject: 'loop5' (000000003461e4bd): fill_kobj_path: path = '/devices/virtual/block/loop5' call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1747 call_netdevice_notifiers net/core/dev.c:1765 [inline] dev_change_tx_queue_len+0x148/0x210 net/core/dev.c:7685 protocol 88fb is buggy, dev hsr_slave_0 do_setlink+0xa90/0x3670 net/core/rtnetlink.c:2471 protocol 88fb is buggy, dev hsr_slave_1 rtnl_newlink+0xbad/0x1600 net/core/rtnetlink.c:3068 kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:4768 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4786 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a919 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0325e45c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f0325e45c90 RCX: 000000000045a919 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0325e466d4 R13: 00000000004c9a1e R14: 00000000004e18f8 R15: 0000000000000006 kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (00000000e59effd2): kobject_uevent_env kobject: 'kvm' (00000000db175205): kobject_uevent_env syz_tun: refused to change device tx_queue_len kobject: 'loop4' (00000000e59effd2): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' Enabling of bearer rejected, failed to enable media syz_tun: refused to change device tx_queue_len kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' syz_tun: refused to change device tx_queue_len kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000003461e4bd): kobject_uevent_env syz_tun: refused to change device tx_queue_len kobject: 'loop5' (000000003461e4bd): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' syz_tun: refused to change device tx_queue_len kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000e59effd2): kobject_uevent_env kobject: 'loop4' (00000000e59effd2): fill_kobj_path: path = '/devices/virtual/block/loop4' syz_tun: refused to change device tx_queue_len kobject: 'loop5' (000000003461e4bd): kobject_uevent_env kobject: 'loop5' (000000003461e4bd): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' syz_tun: refused to change device tx_queue_len kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000003461e4bd): kobject_uevent_env kobject: 'loop5' (000000003461e4bd): fill_kobj_path: path = '/devices/virtual/block/loop5' syz_tun: refused to change device tx_queue_len kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000003461e4bd): kobject_uevent_env kobject: 'loop5' (000000003461e4bd): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000e59effd2): kobject_uevent_env kobject: 'loop4' (00000000e59effd2): fill_kobj_path: path = '/devices/virtual/block/loop4' syz_tun: refused to change device tx_queue_len kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env syz_tun: refused to change device tx_queue_len kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' net_ratelimit: 9 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000003461e4bd): kobject_uevent_env kobject: 'loop5' (000000003461e4bd): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000e59effd2): kobject_uevent_env kobject: 'loop4' (00000000e59effd2): fill_kobj_path: path = '/devices/virtual/block/loop4' syz_tun: refused to change device tx_queue_len kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env syz_tun: refused to change device tx_queue_len kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop5' (000000003461e4bd): kobject_uevent_env kobject: 'loop5' (000000003461e4bd): fill_kobj_path: path = '/devices/virtual/block/loop5' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop4' (00000000e59effd2): kobject_uevent_env kobject: 'loop4' (00000000e59effd2): fill_kobj_path: path = '/devices/virtual/block/loop4' syz_tun: refused to change device tx_queue_len kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' syz_tun: refused to change device tx_queue_len kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' syz_tun: refused to change device tx_queue_len kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' syz_tun: refused to change device tx_queue_len kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000003461e4bd): kobject_uevent_env kobject: 'loop5' (000000003461e4bd): fill_kobj_path: path = '/devices/virtual/block/loop5' protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop4' (00000000e59effd2): kobject_uevent_env kobject: 'loop4' (00000000e59effd2): fill_kobj_path: path = '/devices/virtual/block/loop4' syz_tun: refused to change device tx_queue_len kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' syz_tun: refused to change device tx_queue_len kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000003461e4bd): kobject_uevent_env kobject: 'loop5' (000000003461e4bd): fill_kobj_path: path = '/devices/virtual/block/loop5' syz_tun: refused to change device tx_queue_len kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000e59effd2): kobject_uevent_env kobject: 'loop4' (00000000e59effd2): fill_kobj_path: path = '/devices/virtual/block/loop4' syz_tun: refused to change device tx_queue_len kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2' syz_tun: refused to change device tx_queue_len kobject: 'loop3' (00000000c4003b97): kobject_uevent_env kobject: 'kvm' (00000000db175205): kobject_uevent_env kobject: 'kvm' (00000000db175205): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000c4003b97): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000003461e4bd): kobject_uevent_env kobject: 'loop5' (000000003461e4bd): fill_kobj_path: path = '/devices/virtual/block/loop5' syz_tun: refused to change device tx_queue_len kobject: 'loop2' (00000000cd85b2c7): kobject_uevent_env kobject: 'loop2' (00000000cd85b2c7): fill_kobj_path: path = '/devices/virtual/block/loop2'