hsr_slave_0: entered promiscuous mode hsr_slave_1: entered promiscuous mode debugfs: 'hsr0' already exists in 'hsr' Cannot create hsr debugfs directory Oops: general protection fault, probably for non-canonical address 0xdffffc001fffc000: 0000 [#1] SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x00000000fffe0000-0x00000000fffe0007] CPU: 0 UID: 0 PID: 10572 Comm: syz-executor Not tainted 6.17.0-rc1-syzkaller-00004-g53e760d89498 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:ip6_mc_clear_src+0xd3/0x660 net/ipv6/mcast.c:2593 Code: 49 bc 00 00 00 00 00 fc ff df 48 8d 45 10 49 89 c5 48 89 04 24 49 c1 ed 03 4d 01 e5 eb 32 e8 74 f5 71 f7 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 eb 04 00 00 4c 8b 3b 48 8d 7b 30 48 89 de e8 RSP: 0018:ffffc900047ff2c8 EFLAGS: 00010206 RAX: 000000001fffc000 RBX: 00000000fffe0000 RCX: ffffffff8a499e25 RDX: ffff88803420c880 RSI: ffffffff8a499dac RDI: 0000000000000005 RBP: ffff888052c1dc00 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffed100a583b82 R14: ffff888052c1dc28 R15: 0000000000000001 FS: 00005555597f3500(0000) GS:ffff8881246bc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001240 CR3: 0000000063031000 CR4: 00000000003526f0 Call Trace: __ipv6_dev_mc_dec+0x29f/0x340 net/ipv6/mcast.c:1009 addrconf_leave_solict net/ipv6/addrconf.c:2257 [inline] __ipv6_ifa_notify+0x3e0/0xd60 net/ipv6/addrconf.c:6299 addrconf_ifdown.isra.0+0xe94/0x1aa0 net/ipv6/addrconf.c:3977 addrconf_notify+0x220/0x19e0 net/ipv6/addrconf.c:3776 notifier_call_chain+0xbc/0x410 kernel/notifier.c:85 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2229 call_netdevice_notifiers_extack net/core/dev.c:2267 [inline] call_netdevice_notifiers net/core/dev.c:2281 [inline] netif_close_many+0x319/0x630 net/core/dev.c:1784 unregister_netdevice_many_notify+0x36f/0x24c0 net/core/dev.c:12110 unregister_netdevice_many net/core/dev.c:12211 [inline] unregister_netdevice_queue+0x305/0x3f0 net/core/dev.c:12055 unregister_netdevice include/linux/netdevice.h:3382 [inline] nsim_destroy+0x198/0x800 drivers/net/netdevsim/netdev.c:1136 __nsim_dev_port_del+0x189/0x240 drivers/net/netdevsim/dev.c:1473 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1485 [inline] nsim_dev_reload_destroy+0x10a/0x4d0 drivers/net/netdevsim/dev.c:1707 nsim_drv_remove+0x52/0x1d0 drivers/net/netdevsim/dev.c:1722 device_remove+0xcb/0x170 drivers/base/dd.c:569 __device_release_driver drivers/base/dd.c:1274 [inline] device_release_driver_internal+0x44b/0x620 drivers/base/dd.c:1297 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579 device_del+0x396/0x9f0 drivers/base/core.c:3878 device_unregister+0x1d/0xc0 drivers/base/core.c:3919 nsim_bus_dev_del drivers/net/netdevsim/bus.c:483 [inline] del_device_store+0x355/0x4a0 drivers/net/netdevsim/bus.c:244 bus_attr_store+0x74/0xb0 drivers/base/bus.c:172 sysfs_kf_write+0xef/0x150 fs/sysfs/file.c:145 kernfs_fop_write_iter+0x351/0x510 fs/kernfs/file.c:334 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x7d3/0x11d0 fs/read_write.c:686 ksys_write+0x12a/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd04bd8d69f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffdc7ef5b10 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fd04bd8d69f RDX: 0000000000000001 RSI: 00007ffdc7ef5b60 RDI: 0000000000000005 RBP: 00007fd04be130c1 R08: 0000000000000000 R09: 00007ffdc7ef5967 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001 R13: 00007ffdc7ef5b60 R14: 00007fd04cae4620 R15: 0000000000000003 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ip6_mc_clear_src+0xd3/0x660 net/ipv6/mcast.c:2593 Code: 49 bc 00 00 00 00 00 fc ff df 48 8d 45 10 49 89 c5 48 89 04 24 49 c1 ed 03 4d 01 e5 eb 32 e8 74 f5 71 f7 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 eb 04 00 00 4c 8b 3b 48 8d 7b 30 48 89 de e8 RSP: 0018:ffffc900047ff2c8 EFLAGS: 00010206 RAX: 000000001fffc000 RBX: 00000000fffe0000 RCX: ffffffff8a499e25 RDX: ffff88803420c880 RSI: ffffffff8a499dac RDI: 0000000000000005 RBP: ffff888052c1dc00 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffed100a583b82 R14: ffff888052c1dc28 R15: 0000000000000001 FS: 00005555597f3500(0000) GS:ffff8881246bc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562c3ea5fb40 CR3: 0000000063031000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 7: fc ff df a: 48 8d 45 10 lea 0x10(%rbp),%rax e: 49 89 c5 mov %rax,%r13 11: 48 89 04 24 mov %rax,(%rsp) 15: 49 c1 ed 03 shr $0x3,%r13 19: 4d 01 e5 add %r12,%r13 1c: eb 32 jmp 0x50 1e: e8 74 f5 71 f7 call 0xf771f597 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 0f 85 eb 04 00 00 jne 0x520 35: 4c 8b 3b mov (%rbx),%r15 38: 48 8d 7b 30 lea 0x30(%rbx),%rdi 3c: 48 89 de mov %rbx,%rsi 3f: e8 .byte 0xe8