genirq: Flags mismatch irq 32. 00200000 (eth1) vs. 00200000 (pcmmio) ------------[ cut here ]------------ remove_proc_entry: removing non-empty directory 'irq/30', leaking at least 'eth1-rx-0' WARNING: fs/proc/generic.c:747 at remove_proc_entry+0x4e7/0x610 fs/proc/generic.c:747, CPU#1: syz.2.1779/14539 Modules linked in: CPU: 1 UID: 0 PID: 14539 Comm: syz.2.1779 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:remove_proc_entry+0x4f5/0x610 fs/proc/generic.c:747 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 c7 00 00 00 48 8d 3d c9 eb 8a 0e 49 8b 95 d0 00 00 00 48 c7 c6 c0 66 0b 8c <67> 48 0f b9 3a e9 2a fe ff ff e8 cc b6 4a ff 48 8d 7d 18 48 b8 00 RSP: 0018:ffffc9000342e880 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffff888028af9b1c RDX: ffff88801d71c5dc RSI: ffffffff8c0b66c0 RDI: ffffffff914bc5d0 RBP: ffff888028af9af8 R08: ffff88805824835c R09: ffffed100515f34b R10: ffff888028af9a5b R11: 0000000000000000 R12: ffff888028af9a40 R13: ffff88801d71c500 R14: ffff888058248338 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888096a55000(0063) knlGS:00000000f542db40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f540bff4 CR3: 0000000078f6a000 CR4: 0000000000352ef0 Call Trace: unregister_irq_proc+0x206/0x2a0 kernel/irq/proc.c:406 free_desc+0x89/0x330 kernel/irq/irqdesc.c:482 irq_free_descs kernel/irq/irqdesc.c:874 [inline] irq_free_descs+0x84/0xc0 kernel/irq/irqdesc.c:865 irq_domain_free_irqs+0x46a/0x5c0 kernel/irq/irqdomain.c:1919 __msi_domain_free_irqs kernel/irq/msi.c:1619 [inline] msi_domain_free_locked.part.0+0x524/0x6b0 kernel/irq/msi.c:1645 msi_domain_free_locked kernel/irq/msi.c:1632 [inline] msi_domain_free_irqs_range_locked kernel/irq/msi.c:1668 [inline] msi_domain_free_irqs_all_locked+0x11d/0x170 kernel/irq/msi.c:1700 pci_msi_teardown_msi_irqs+0xb3/0xd0 drivers/pci/msi/irqdomain.c:28 pci_free_msi_irqs+0x1f/0xa0 drivers/pci/msi/msi.c:931 pci_disable_msix drivers/pci/msi/api.c:200 [inline] pci_disable_msix+0xcf/0x100 drivers/pci/msi/api.c:193 e1000e_reset_interrupt_capability drivers/net/ethernet/intel/e1000e/netdev.c:2041 [inline] e1000_request_irq+0x473/0xdc0 drivers/net/ethernet/intel/e1000e/netdev.c:2175 e1000e_open+0x471/0x1800 drivers/net/ethernet/intel/e1000e/netdev.c:4687 __dev_open+0x3ad/0x8f0 net/core/dev.c:1724 __dev_change_flags+0x596/0x850 net/core/dev.c:9823 netif_change_flags+0x8d/0x160 net/core/dev.c:9888 do_setlink.isra.0+0x1ac4/0x3e60 net/core/rtnetlink.c:3271 rtnl_changelink net/core/rtnetlink.c:3910 [inline] __rtnl_newlink net/core/rtnetlink.c:4081 [inline] rtnl_newlink+0x13c1/0x2620 net/core/rtnetlink.c:4220 rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7137 netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2575 netlink_unicast_kernel net/netlink/af_netlink.c:1338 [inline] netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1364 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:800 [inline] __sock_sendmsg net/socket.c:815 [inline] ____sys_sendmsg+0xa4d/0xbe0 net/socket.c:2713 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2767 __sys_sendmsg+0x160/0x210 net/socket.c:2799 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:79 [inline] __do_fast_syscall_32+0x13a/0x8b0 arch/x86/entry/syscall_32.c:291 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:316 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf703efec Code: Unable to access opcode bytes at 0xf703efc2. RSP: 002b:00000000f542d50c EFLAGS: 00000292 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000080000080 RDX: 000000000000c804 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 00 fc add %bh,%ah 2: ff lcall (bad) 3: df 48 89 fisttps -0x77(%rax) 6: fa cli 7: 48 c1 ea 03 shr $0x3,%rdx b: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) f: 0f 85 c7 00 00 00 jne 0xdc 15: 48 8d 3d c9 eb 8a 0e lea 0xe8aebc9(%rip),%rdi # 0xe8aebe5 1c: 49 8b 95 d0 00 00 00 mov 0xd0(%r13),%rdx 23: 48 c7 c6 c0 66 0b 8c mov $0xffffffff8c0b66c0,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 2a fe ff ff jmp 0xfffffe5e 34: e8 cc b6 4a ff call 0xff4ab705 39: 48 8d 7d 18 lea 0x18(%rbp),%rdi 3d: 48 rex.W 3e: b8 .byte 0xb8