netdevsim netdevsim5 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim5 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim5 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 1 UID: 0 PID: 20193 Comm: syz-executor Not tainted 6.13.0-rc2-syzkaller-00192-g243f750a2df0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:devlink_trap_item_lookup net/devlink/trap.c:91 [inline] RIP: 0010:devlink_trap_disable net/devlink/trap.c:1331 [inline] RIP: 0010:devl_traps_unregister+0x13e/0x2f0 net/devlink/trap.c:1422 Code: 84 47 01 00 00 e8 b2 33 95 f7 48 89 d8 48 c1 e8 03 80 3c 28 00 0f 85 54 01 00 00 4c 8b 23 49 8d 7c 24 10 48 89 fa 48 c1 ea 03 <80> 3c 2a 00 0f 85 48 01 00 00 49 8b 7c 24 10 4c 89 ee e8 ab 33 12 RSP: 0018:ffffc90003877948 EFLAGS: 00010202 RAX: 1ffff110042fbb90 RBX: ffff8880217ddc80 RCX: ffffffff8a040a81 RDX: 0000000000000002 RSI: ffffffff8a040a3e RDI: 0000000000000010 RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000007 R12: 0000000000000000 R13: ffffffff8c0a2820 R14: ffff88805c2e0000 R15: ffff88805c2e0110 FS: 000055555b4b3500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f89276f6f98 CR3: 00000000615ac000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nsim_dev_traps_exit+0x53/0x170 drivers/net/netdevsim/dev.c:939 nsim_dev_reload_destroy+0x176/0x4d0 drivers/net/netdevsim/dev.c:1666 nsim_drv_remove+0x52/0x1d0 drivers/net/netdevsim/dev.c:1676 device_remove+0xc8/0x170 drivers/base/dd.c:567 __device_release_driver drivers/base/dd.c:1273 [inline] device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296 bus_remove_device+0x22f/0x420 drivers/base/bus.c:576 device_del+0x396/0x9f0 drivers/base/core.c:3854 device_unregister+0x1d/0xc0 drivers/base/core.c:3895 nsim_bus_dev_del drivers/net/netdevsim/bus.c:462 [inline] del_device_store+0x346/0x4b0 drivers/net/netdevsim/bus.c:226 bus_attr_store+0x71/0xb0 drivers/base/bus.c:172 sysfs_kf_write+0x117/0x170 fs/sysfs/file.c:139 kernfs_fop_write_iter+0x33d/0x500 fs/kernfs/file.c:334 new_sync_write fs/read_write.c:586 [inline] vfs_write+0x5ae/0x1150 fs/read_write.c:679 ksys_write+0x12b/0x250 fs/read_write.c:731 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd8d23847cf 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:00007ffc693ddc70 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fd8d23847cf RDX: 0000000000000001 RSI: 00007ffc693ddcc0 RDI: 0000000000000005 RBP: 00007fd8d2402c2d R08: 0000000000000000 R09: 00007ffc693ddac7 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001 R13: 00007ffc693ddcc0 R14: 00007fd8d30a4620 R15: 0000000000000003 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:devlink_trap_item_lookup net/devlink/trap.c:91 [inline] RIP: 0010:devlink_trap_disable net/devlink/trap.c:1331 [inline] RIP: 0010:devl_traps_unregister+0x13e/0x2f0 net/devlink/trap.c:1422 Code: 84 47 01 00 00 e8 b2 33 95 f7 48 89 d8 48 c1 e8 03 80 3c 28 00 0f 85 54 01 00 00 4c 8b 23 49 8d 7c 24 10 48 89 fa 48 c1 ea 03 <80> 3c 2a 00 0f 85 48 01 00 00 49 8b 7c 24 10 4c 89 ee e8 ab 33 12 RSP: 0018:ffffc90003877948 EFLAGS: 00010202 RAX: 1ffff110042fbb90 RBX: ffff8880217ddc80 RCX: ffffffff8a040a81 RDX: 0000000000000002 RSI: ffffffff8a040a3e RDI: 0000000000000010 RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000007 R12: 0000000000000000 R13: ffffffff8c0a2820 R14: ffff88805c2e0000 R15: ffff88805c2e0110 FS: 000055555b4b3500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557bc68e8088 CR3: 00000000615ac000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 84 47 01 test %al,0x1(%rdi) 3: 00 00 add %al,(%rax) 5: e8 b2 33 95 f7 call 0xf79533bc a: 48 89 d8 mov %rbx,%rax d: 48 c1 e8 03 shr $0x3,%rax 11: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) 15: 0f 85 54 01 00 00 jne 0x16f 1b: 4c 8b 23 mov (%rbx),%r12 1e: 49 8d 7c 24 10 lea 0x10(%r12),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 2a 00 cmpb $0x0,(%rdx,%rbp,1) <-- trapping instruction 2e: 0f 85 48 01 00 00 jne 0x17c 34: 49 8b 7c 24 10 mov 0x10(%r12),%rdi 39: 4c 89 ee mov %r13,%rsi 3c: e8 .byte 0xe8 3d: ab stos %eax,%es:(%rdi) 3e: 33 12 xor (%rdx),%edx