loop2: detected capacity change from 0 to 40 watchdog: BUG: soft lockup - CPU#0 stuck for 24s! [syz-executor.4:13993] Modules linked in: irq event stamp: 4723935 hardirqs last enabled at (4723934): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4723935): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4699996): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4699999): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 13993 Comm: syz-executor.4 Not tainted 6.1.0-rc5-next-20221117 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x1fd/0x2130 Code: 48 89 54 24 28 48 89 74 24 20 44 89 5c 24 18 e8 19 1d 6a 00 48 8b 54 24 28 48 8b 74 24 20 44 8b 5c 24 18 8b 0c 95 b0 3e 49 86 <8d> 56 01 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 95 b0 3e 49 86 49 RSP: 0018:ffff88806ce09670 EFLAGS: 00000246 RAX: 0000000000000007 RBX: 0000000000000001 RCX: 000000000002fcfa RDX: 000000000000c6ff RSI: 000000000000c6ff RDI: ffffffff864c5aac RBP: ffff88806ce09748 R08: ffffffff861176a2 R09: ffffffff861176a6 R10: ffff88806ce09ff8 R11: 0000000000038001 R12: ffff88806ce09731 R13: ffff88806ce09750 R14: ffff88806ce096f0 R15: ffffffff81c6ffcc FS: 00007f982e9de700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0fb592f3a4 CR3: 0000000036410000 CR4: 0000000000350ef0 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+0x5c/0x70 kmem_cache_alloc+0x1e0/0x410 __create_object+0x3d/0xc00 kmem_cache_alloc_node+0x282/0x420 __alloc_skb+0x21a/0x310 __netdev_alloc_skb+0x76/0x3e0 __ieee80211_beacon_get+0x3de/0x1380 ieee80211_beacon_get_tim+0x99/0x4f0 mac80211_hwsim_beacon_tx+0x1d2/0xab0 __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:unwind_next_frame+0x1fd/0x2130 Code: 48 89 54 24 28 48 89 74 24 20 44 89 5c 24 18 e8 19 1d 6a 00 48 8b 54 24 28 48 8b 74 24 20 44 8b 5c 24 18 8b 0c 95 b0 3e 49 86 <8d> 56 01 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 95 b0 3e 49 86 49 RSP: 0018:ffff8880424a7430 EFLAGS: 00000246 RAX: 0000000000000003 RBX: 0000000000000001 RCX: 00000000000b4558 RDX: 0000000000036000 RSI: 0000000000036000 RDI: ffffffff8656beb0 RBP: ffff8880424a7508 R08: ffffffff864614c6 R09: ffffffff864614ca R10: ffffed1008494ea3 R11: 0000000000038001 R12: ffff8880424a74f1 R13: ffff8880424a7510 R14: ffff8880424a74b0 R15: ffffffff846000ad arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 set_track_prepare+0x74/0xd0 __create_object+0x378/0xc00 kmem_cache_alloc+0x272/0x410 alloc_buffer_head+0x24/0x150 alloc_page_buffers+0x2a2/0x690 __getblk_slow+0x3e7/0xbe0 __getblk_gfp+0x76/0x80 fat_mirror_bhs+0x1cd/0x500 fat_alloc_clusters+0xca9/0xf40 fat_alloc_new_dir+0xd7/0xd00 vfat_mkdir+0x104/0x310 vfs_mkdir+0x495/0x740 do_mkdirat+0x16e/0x2d0 __x64_sys_mkdir+0xf6/0x150 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f9831488c27 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 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:00007f982e9ddfa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9831488c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007f982e9de040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000100 R14: 00007f982e9de000 R15: 0000000000000000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 13998 Comm: syz-executor.0 Not tainted 6.1.0-rc5-next-20221117 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kasan_set_track+0x28/0x30 Code: 90 90 66 0f 1f 00 53 48 89 fb 89 f7 be 01 00 00 00 65 48 8b 04 25 c0 86 03 00 8b 80 20 05 00 00 89 03 e8 7b ff ff ff 89 43 04 <5b> e9 06 8e c3 02 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffff88806cf09ae8 EFLAGS: 00000282 RAX: 0000000007ae01c5 RBX: ffff888013e81370 RCX: 0000000000000000 RDX: 00000000000d9239 RSI: ffff88806cf0993c RDI: 0000000000000000 RBP: ffff88800878fdc0 R08: 000000000000000f R09: ffff888016fbfae0 R10: ffff88806cac91c8 R11: 0000000000000001 R12: ffff888013e81280 R13: 0000000000000820 R14: 0000000000000000 R15: 0000000000000820 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd47236c78 CR3: 0000000019c4e000 CR4: 0000000000350ee0 Call Trace: __kasan_slab_alloc+0x5c/0x70 kmem_cache_alloc_node+0x1f4/0x420 __alloc_skb+0x21a/0x310 __netdev_alloc_skb+0x76/0x3e0 __ieee80211_beacon_get+0x3de/0x1380 ieee80211_beacon_get_tim+0x99/0x4f0 mac80211_hwsim_beacon_tx+0x1d2/0xab0 __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:percpu_counter_add_batch+0x5e/0x180 Code: 1e 02 48 8d 45 58 48 89 c2 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 f7 00 00 00 4c 8b 7d 58 <48> 89 df 65 45 8b 37 4d 63 e6 4d 01 ec 4c 89 e2 48 c1 fa 3f 48 89 RSP: 0018:ffff888041fff6b8 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000020 RCX: 1ffffffff0f37ce8 RDX: 1ffff11003d0408f RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff88801e820420 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000fffffffd R11: 0000000000000001 R12: ffffffff85d10b90 R13: fffffffffffffffd R14: ffff88801e820420 R15: 0000607f92e2160c unmap_page_range+0xdff/0x2c10 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21a5/0x22e0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f59425f8b19 Code: Unable to access opcode bytes at 0x7f59425f8aef. RSP: 002b:00007f593fb6e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: 0000000000000007 RBX: 00007f594270bf60 RCX: 00007f59425f8b19 RDX: 0000000000004042 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007f5942652f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc0e8b4e4f R14: 00007f593fb6e300 R15: 0000000000022000 rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 26992 jiffies s: 1917 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 13993 Comm: syz-executor.4 Tainted: G L 6.1.0-rc5-next-20221117 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__kasan_check_read+0x0/0x20 Code: 48 39 c7 0f 82 4f 04 b3 02 eb dd 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 8f f4 ff ff 66 66 2e 0f 1f RSP: 0018:ffff88806ce09098 EFLAGS: 00000012 RAX: 0000000000000001 RBX: 0000000000000042 RCX: ffffffff812bb2ea RDX: 1ffff110034ed7f4 RSI: 0000000000000008 RDI: ffffffff87631848 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff87631847 R10: fffffbfff0ec6308 R11: 0000000000000001 R12: ffff88801a76b580 R13: ffff88801a76bf80 R14: 0000000000000000 R15: 0000000000000001 FS: 00007f982e9de700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0fb592f3a4 CR3: 0000000036410000 CR4: 0000000000350ef0 Call Trace: __lock_acquire+0xbad/0x5e70 lock_acquire+0x1a6/0x530 ktime_get+0x80/0x1f0 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:unwind_next_frame+0x1c2/0x2130 Code: 8d 43 ff 39 c6 0f 83 8c 15 00 00 48 b8 00 00 00 00 00 fc ff df 89 f2 48 8d 3c 95 b0 3e 49 86 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 27 84 c9 74 23 48 89 54 24 28 RSP: 0018:ffff88806ce097c8 EFLAGS: 00000216 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000033dac RSI: 0000000000033dac RDI: ffffffff86563560 RBP: ffff88806ce098a0 R08: ffffffff861035b4 R09: ffffffff861035b8 R10: ffff88806ce09ff8 R11: 0000000000038001 R12: ffff88806ce09889 R13: ffff88806ce098a8 R14: ffff88806ce09848 R15: ffffffff843dac3e arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xa40 __kmem_cache_free+0x95/0x410 skb_release_data+0x6d8/0x810 consume_skb+0xcb/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:unwind_next_frame+0x1fd/0x2130 Code: 48 89 54 24 28 48 89 74 24 20 44 89 5c 24 18 e8 19 1d 6a 00 48 8b 54 24 28 48 8b 74 24 20 44 8b 5c 24 18 8b 0c 95 b0 3e 49 86 <8d> 56 01 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 95 b0 3e 49 86 49 RSP: 0018:ffff8880424a7430 EFLAGS: 00000246 RAX: 0000000000000003 RBX: 0000000000000001 RCX: 00000000000b4558 RDX: 0000000000036000 RSI: 0000000000036000 RDI: ffffffff8656beb0 RBP: ffff8880424a7508 R08: ffffffff864614c6 R09: ffffffff864614ca R10: ffffed1008494ea3 R11: 0000000000038001 R12: ffff8880424a74f1 R13: ffff8880424a7510 R14: ffff8880424a74b0 R15: ffffffff846000ad arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 set_track_prepare+0x74/0xd0 __create_object+0x378/0xc00 kmem_cache_alloc+0x272/0x410 alloc_buffer_head+0x24/0x150 alloc_page_buffers+0x2a2/0x690 __getblk_slow+0x3e7/0xbe0 __getblk_gfp+0x76/0x80 fat_mirror_bhs+0x1cd/0x500 fat_alloc_clusters+0xca9/0xf40 fat_alloc_new_dir+0xd7/0xd00 vfat_mkdir+0x104/0x310 vfs_mkdir+0x495/0x740 do_mkdirat+0x16e/0x2d0 __x64_sys_mkdir+0xf6/0x150 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f9831488c27 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 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:00007f982e9ddfa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9831488c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007f982e9de040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000100 R14: 00007f982e9de000 R15: 0000000000000000 loop7: detected capacity change from 0 to 40 loop3: detected capacity change from 0 to 40 ---------------- Code disassembly (best guess): 0: 48 89 54 24 28 mov %rdx,0x28(%rsp) 5: 48 89 74 24 20 mov %rsi,0x20(%rsp) a: 44 89 5c 24 18 mov %r11d,0x18(%rsp) f: e8 19 1d 6a 00 callq 0x6a1d2d 14: 48 8b 54 24 28 mov 0x28(%rsp),%rdx 19: 48 8b 74 24 20 mov 0x20(%rsp),%rsi 1e: 44 8b 5c 24 18 mov 0x18(%rsp),%r11d 23: 8b 0c 95 b0 3e 49 86 mov -0x79b6c150(,%rdx,4),%ecx * 2a: 8d 56 01 lea 0x1(%rsi),%edx <-- trapping instruction 2d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 34: fc ff df 37: 48 8d 3c 95 b0 3e 49 lea -0x79b6c150(,%rdx,4),%rdi 3e: 86 3f: 49 rex.WB