syz_tun: refused to change device tx_queue_len watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.1:14073] Modules linked in: irq event stamp: 3984831 hardirqs last enabled at (3984830): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3984831): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (3929514): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (3929517): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 14073 Comm: syz-executor.1 Not tainted 6.1.0-rc3-next-20221107 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__stack_depot_save+0x166/0x4e0 Code: 75 11 e9 a5 00 00 00 4d 8b 09 4d 85 c9 0f 84 99 00 00 00 41 39 59 08 75 ee 41 3b 49 0c 75 e8 31 c0 49 8b 7c c1 18 49 39 3c c7 <75> db 48 83 c0 01 49 39 c0 75 ec 48 8b 7c 24 28 48 85 ff 74 12 be RSP: 0018:ffff88806d109990 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 0000000097fe37a3 RCX: 000000000000000f RDX: 00000000000e37a3 RSI: ffff88806d109a6c RDI: ffffffff817c0fd5 RBP: 0000000000000000 R08: 000000000000000f R09: ffff88800e83c510 R10: ffff88806cc1bd18 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000800 R15: ffff88806d109a00 FS: 00007fb499f68700(0000) GS:ffff88806d100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c72d000 CR3: 0000000015752000 CR4: 0000000000350ee0 Call Trace: kasan_save_stack+0x35/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0xfb/0x610 kfree_skbmem+0xef/0x1b0 consume_skb+0xd8/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x541/0xb50 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:alloc_fd+0x273/0x6e0 Code: 3c 08 00 0f 85 86 03 00 00 48 8b 7b 20 e8 95 46 87 00 44 89 ee c1 e0 06 89 c7 89 44 24 18 e8 e4 d6 be ff 8b 44 24 18 44 39 e8 <76> 08 44 89 ed e9 98 fe ff ff 89 44 24 18 e8 5a db be ff 8b 44 24 RSP: 0018:ffff888043dc7e60 EFLAGS: 00000287 RAX: 0000000000000000 RBX: ffff88800d922c00 RCX: ffffffff8189b47c RDX: ffff88800891d040 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 0000000000000007 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000001 R12: ffff88803e68ed00 R13: 0000000000000100 R14: 0000000000000000 R15: 0000000000000100 __sys_accept4+0x71/0x130 __x64_sys_accept4+0x97/0x100 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fb49c9f2b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb499f68188 EFLAGS: 00000246 ORIG_RAX: 0000000000000120 RAX: ffffffffffffffda RBX: 00007fb49cb05f60 RCX: 00007fb49c9f2b19 RDX: 0000000020000340 RSI: 0000000020000400 RDI: 0000000000000006 RBP: 00007fb49ca4cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000800 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff8a8ac5ef R14: 00007fb499f68300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 14081 Comm: syz-executor.7 Not tainted 6.1.0-rc3-next-20221107 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0xb/0x70 Code: c0 e9 2d 21 f5 02 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 05 cd f6 ba 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 c0 86 03 00 a9 RSP: 0018:ffff88806d009330 EFLAGS: 00000046 RAX: 0000000000010101 RBX: 0000000000000000 RCX: ffffffff81397a00 RDX: ffff88800f99b580 RSI: 0000000000000100 RDI: 0000000000000007 RBP: ffff88806d009578 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880089e6b20 R13: 0000000000002710 R14: 0000000000000001 R15: dffffc0000000000 FS: 00007f97f8467700(0000) GS:ffff88806d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31021000 CR3: 0000000040f84000 CR4: 0000000000350ef0 Call Trace: ktime_get+0x5e/0x1f0 perf_swevent_hrtimer+0x227/0x3d0 __hrtimer_run_queues+0x184/0xb50 hrtimer_interrupt+0x319/0x770 __sysvec_apic_timer_interrupt+0x148/0x500 sysvec_apic_timer_interrupt+0x3f/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__orc_find+0x80/0xf0 Code: fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 50 <48> 63 03 48 01 d8 48 39 c1 73 b0 4c 8d 63 fc 49 39 ec 73 b3 4d 29 RSP: 0018:ffff88806d009800 EFLAGS: 00000246 RAX: 0000000000000003 RBX: ffffffff85d62130 RCX: ffffffff8347eb2e RDX: 0000000000000000 RSI: ffffffff8615d746 RDI: ffffffff85d6211c RBP: ffffffff85d6212c R08: ffffffff8615d746 R09: ffffffff85ef13a4 R10: ffffed100da01326 R11: 0000000000036001 R12: ffffffff85d62134 R13: ffffffff85d6211c R14: ffffffff85d62128 R15: dffffc0000000000 unwind_next_frame+0x2b1/0x2130 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0xfb/0x610 kfree_skbmem+0xef/0x1b0 consume_skb+0xd8/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x541/0xb50 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:stack_trace_consume_entry+0x0/0x170 Code: 8b 44 24 10 e9 22 fe ff ff e8 8c 85 44 00 e9 52 fd ff ff e8 42 b5 03 03 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 55 53 48 89 fb 48 83 c7 RSP: 0018:ffff888042acf1f0 EFLAGS: 00000286 RAX: ffffffff817c0e82 RBX: ffffffff8137b460 RCX: 0000000000000000 RDX: 1ffff11008559e4a RSI: ffffffff817c0e82 RDI: ffff888042acf2c0 RBP: ffff888042acf290 R08: ffffffff85ef1958 R09: ffffffff85ef195c R10: ffffed1008559e4c R11: ffff888042acf238 R12: ffff888042acf2c0 R13: 0000000000000000 R14: ffff88800f99b580 R15: ffff88800ee00790 arch_stack_walk+0x77/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_kmalloc+0x82/0x90 __kmalloc+0x56/0xc0 bio_kmalloc+0x3e/0x70 blk_rq_map_kern+0x4a5/0x920 __scsi_execute+0x4cc/0x650 sr_check_events+0x182/0xa40 cdrom_check_events+0x68/0x110 sr_block_check_events+0xc3/0x100 disk_check_events+0xc7/0x420 bdev_check_media_change+0x130/0x320 sr_block_open+0x112/0x2b0 blkdev_get_whole+0x9b/0x2d0 blkdev_get_by_dev.part.0+0x5f0/0xb90 blkdev_get_by_dev+0x73/0x90 blkdev_open+0x140/0x2d0 do_dentry_open+0x6ca/0x12b0 path_openat+0x1847/0x29b0 do_filp_open+0x1ba/0x410 do_sys_openat2+0x171/0x4c0 __x64_sys_openat+0x143/0x200 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f97faef1b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f97f8467188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f97fb004f60 RCX: 00007f97faef1b19 RDX: 0000000000105802 RSI: 00000000200001c0 RDI: ffffffffffffff9c RBP: 00007f97faf4bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff01430ecf R14: 00007f97f8467300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 75 11 jne 0x13 2: e9 a5 00 00 00 jmpq 0xac 7: 4d 8b 09 mov (%r9),%r9 a: 4d 85 c9 test %r9,%r9 d: 0f 84 99 00 00 00 je 0xac 13: 41 39 59 08 cmp %ebx,0x8(%r9) 17: 75 ee jne 0x7 19: 41 3b 49 0c cmp 0xc(%r9),%ecx 1d: 75 e8 jne 0x7 1f: 31 c0 xor %eax,%eax 21: 49 8b 7c c1 18 mov 0x18(%r9,%rax,8),%rdi 26: 49 39 3c c7 cmp %rdi,(%r15,%rax,8) * 2a: 75 db jne 0x7 <-- trapping instruction 2c: 48 83 c0 01 add $0x1,%rax 30: 49 39 c0 cmp %rax,%r8 33: 75 ec jne 0x21 35: 48 8b 7c 24 28 mov 0x28(%rsp),%rdi 3a: 48 85 ff test %rdi,%rdi 3d: 74 12 je 0x51 3f: be .byte 0xbe