sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00 blk_print_req_error: 1 callbacks suppressed I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x84700 phys_seg 31 prio class 2 watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.7:7770] Modules linked in: irq event stamp: 3619469 hardirqs last enabled at (3619468): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3619469): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (3614276): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (3614291): [] __irq_exit_rcu+0xcc/0x110 CPU: 0 PID: 7770 Comm: syz-executor.7 Not tainted 6.2.0-next-20230227 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x8a/0x22d0 Code: d9 19 00 00 49 8b 45 58 48 89 44 24 08 49 8d 45 48 48 89 c2 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 fe 19 00 00 49 8b 45 48 65 ff 05 9d 63 f0 7e 48 89 44 24 10 RSP: 0018:ffff88806ce095e0 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffffff813a4c60 RCX: 0000000000000001 RDX: 1ffff1100d9c12d3 RSI: ffffffff844802ef RDI: ffff88806ce09650 RBP: ffff88806ce096a8 R08: 0000000000000001 R09: ffff88806ce09690 R10: 0000000000038001 R11: 0000000000000001 R12: ffff88806ce09718 R13: ffff88806ce09650 R14: ffff888019acb580 R15: 0000000000000001 FS: 00007f12b8188700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f600f6dda80 CR3: 000000004799c000 CR4: 0000000000350ef0 DR0: 0000000020000100 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc+0x172/0x320 __create_object+0x3c/0xc90 kmem_cache_alloc_node+0x215/0x330 kmalloc_reserve+0x16d/0x230 __alloc_skb+0x129/0x330 __netdev_alloc_skb+0x72/0x370 __ieee80211_beacon_get+0x3d9/0x13c0 ieee80211_beacon_get_tim+0x99/0x540 mac80211_hwsim_beacon_tx+0x1d3/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x258/0x8a2 __irq_exit_rcu+0xcc/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:mod_node_page_state+0x3e/0x120 Code: 48 89 fd 48 81 c7 00 38 00 00 53 48 89 d3 48 89 fa 48 c1 ea 03 48 83 ec 08 80 3c 02 00 0f 85 c5 00 00 00 4c 8b 8d 00 38 00 00 <41> 89 f2 83 ee 05 4b 8d 54 11 01 83 fe 01 76 4d 4d 63 c0 65 41 8a RSP: 0018:ffff8880474af7d0 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffffffffff8000 RCX: 0000000000000003 RDX: 1ffff1100fffbf00 RSI: 0000000000000006 RDI: ffff88807ffdf800 RBP: ffff88807ffdc000 R08: 00000000ffff8000 R09: 000000000003f800 R10: fffffbfff0eeff29 R11: 0000000000000001 R12: 0000000000000003 R13: 0000000000000003 R14: ffff888008441dc0 R15: ffff88800f2bf800 __free_slab+0xaa/0x100 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x196/0x230 __kasan_kmalloc+0x6f/0x90 nfs_netns_sysfs_setup+0x51/0x160 nfs_net_init+0x15/0x20 ops_init+0xbb/0x6b0 setup_net+0x3d9/0x990 copy_net_ns+0x321/0x770 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x414/0x500 copy_process+0x2a5e/0x7390 kernel_clone+0xeb/0x8c0 __do_sys_clone3+0x1d5/0x2e0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f12bac12b19 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:00007f12b8188188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f12bad25f60 RCX: 00007f12bac12b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f12bac6cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd0ee3f00f R14: 00007f12b8188300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: d9 19 fstps (%rcx) 2: 00 00 add %al,(%rax) 4: 49 8b 45 58 mov 0x58(%r13),%rax 8: 48 89 44 24 08 mov %rax,0x8(%rsp) d: 49 8d 45 48 lea 0x48(%r13),%rax 11: 48 89 c2 mov %rax,%rdx 14: 48 89 04 24 mov %rax,(%rsp) 18: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1f: fc ff df 22: 48 c1 ea 03 shr $0x3,%rdx 26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) * 2a: 0f 85 fe 19 00 00 jne 0x1a2e <-- trapping instruction 30: 49 8b 45 48 mov 0x48(%r13),%rax 34: 65 ff 05 9d 63 f0 7e incl %gs:0x7ef0639d(%rip) # 0x7ef063d8 3b: 48 89 44 24 10 mov %rax,0x10(%rsp)