watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.5:13274] Modules linked in: irq event stamp: 4187455 hardirqs last enabled at (4187454): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4187455): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4106740): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4106743): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 13274 Comm: syz-executor.5 Not tainted 6.1.0-rc5-next-20221114 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0xbe/0x2130 Code: 3c 02 00 0f 85 93 17 00 00 49 8b 46 48 bf 01 00 00 00 48 89 44 24 10 e8 80 38 0f 00 48 b8 00 00 00 00 00 fc ff df 4d 8d 6e 60 <4c> 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 ca 17 00 00 4d 8b 66 60 4d RSP: 0018:ffff88806cf099f8 EFLAGS: 00000287 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 1ffffffff0f378e8 RDX: 0000000000000000 RSI: ffffffff817c9de5 RDI: 0000000000000001 RBP: ffff88806cf09ad0 R08: ffffffff860f2560 R09: ffffffff860f2564 R10: ffffed100d9e135c R11: ffff88806cf09ab8 R12: ffff88806cf09b40 R13: ffff88806cf09ad8 R14: ffff88806cf09a78 R15: ffff88800844f780 FS: 00007f1310b29700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557060960d78 CR3: 000000001605e000 CR4: 0000000000350ee0 Call Trace: 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 rcu_core+0x7e2/0x2090 __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:lock_acquire+0x1df/0x530 Code: 03 b8 ff ff ff ff 65 0f c1 05 0d 79 d6 7e 83 f8 01 0f 85 c8 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffff8880439b6e70 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff11008736dd0 RCX: 000000002f68b376 RDX: 1ffff110079b512b RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8762f847 R10: fffffbfff0ec5f08 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff856082e0 R15: 0000000000000000 cgroup_get_e_css+0x196/0x850 loop_queue_rq+0x2b2/0x1110 __blk_mq_try_issue_directly+0x54c/0x750 blk_mq_plug_issue_direct.constprop.0+0x22c/0xd70 blk_mq_flush_plug_list+0xae0/0xf80 __blk_flush_plug+0x28d/0x420 blk_finish_plug+0x54/0xa0 mpage_writepages+0x111/0x170 do_writepages+0x1b4/0x6a0 filemap_fdatawrite_wbc+0x14b/0x1b0 __filemap_fdatawrite_range+0xba/0x100 file_write_and_wait_range+0xba/0x130 __generic_file_fsync+0x78/0x200 fat_file_fsync+0x77/0x200 vfs_fsync_range+0x141/0x230 generic_file_write_iter+0x25e/0x350 do_iter_readv_writev+0x211/0x3c0 do_iter_write+0x18b/0x700 vfs_iter_write+0x74/0xb0 iter_file_splice_write+0x73e/0xcb0 direct_splice_actor+0x113/0x180 splice_direct_to_actor+0x33a/0x8c0 do_splice_direct+0x1bc/0x290 do_sendfile+0xb1d/0x1280 __x64_sys_sendfile64+0x248/0x2a0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f13135b3b19 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:00007f1310b29188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f13136c6f60 RCX: 00007f13135b3b19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 RBP: 00007f131360df6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000fffffdef R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffee3ce039f R14: 00007f1310b29300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 13265 Comm: syz-executor.7 Not tainted 6.1.0-rc5-next-20221114 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:preempt_count_sub+0x29/0x160 Code: 90 f3 0f 1e fa 48 c7 c0 40 c7 9b 87 53 89 fb 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 <38> d0 7c 08 84 d2 0f 85 f0 00 00 00 8b 0d 95 ec 79 06 85 c9 75 1b RSP: 0018:ffff88806ce09838 EFLAGS: 00000206 RAX: 0000000000000003 RBX: 0000000000000001 RCX: 1ffffffff0f378e8 RDX: 0000000000000004 RSI: ffff8880439afe20 RDI: 0000000000000001 RBP: ffff8880439a8000 R08: ffffffff8605a45a R09: ffffffff8605a45e R10: ffff88806ce09ff8 R11: ffff88806ce09908 R12: ffff88806ce09909 R13: ffff88806ce09928 R14: ffff88806ce098c8 R15: 0000000000000007 FS: 00007f31e2513700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2bf6847543 CR3: 000000001634e000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0xd8d/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:_raw_spin_unlock_irqrestore+0x32/0x60 Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 e6 2a ec fc 48 89 ef e8 ae a2 ec fc 80 e7 02 74 06 e8 b4 11 10 fd fb bf 01 00 00 00 09 00 e2 fc 65 8b 05 5a ac c3 7b 85 c0 74 07 5b 5d e9 4b 29 00 RSP: 0018:ffff8880439af890 EFLAGS: 00000202 RAX: 0000000000037013 RBX: 0000000000000246 RCX: ffffffff812b672f RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffffff856d1bc0 R08: 0000000000000001 R09: ffffffff8762f8b7 R10: fffffbfff0ec5f16 R11: 0000000000000001 R12: 0000000000000001 R13: ffff8880084c6140 R14: 0000000000000002 R15: 0000000000002900 kmem_cache_alloc_bulk+0x409/0x790 mas_alloc_nodes+0x2ff/0x800 mas_node_count_gfp+0x106/0x140 mas_expected_entries+0x117/0x210 dup_mmap+0x45d/0x10b0 copy_process+0x6b69/0x7220 kernel_clone+0xeb/0x950 __do_sys_fork+0x80/0xc0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f31e4f9db19 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:00007f31e2513188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007f31e50b0f60 RCX: 00007f31e4f9db19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f31e4ff7f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffadfae54f R14: 00007f31e2513300 R15: 0000000000022000 Bluetooth: hci7: command 0x0406 tx timeout Bluetooth: hci1: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout ---------------- Code disassembly (best guess): 0: 3c 02 cmp $0x2,%al 2: 00 0f add %cl,(%rdi) 4: 85 93 17 00 00 49 test %edx,0x49000017(%rbx) a: 8b 46 48 mov 0x48(%rsi),%eax d: bf 01 00 00 00 mov $0x1,%edi 12: 48 89 44 24 10 mov %rax,0x10(%rsp) 17: e8 80 38 0f 00 callq 0xf389c 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df 26: 4d 8d 6e 60 lea 0x60(%r14),%r13 * 2a: 4c 89 ea mov %r13,%rdx <-- trapping instruction 2d: 48 c1 ea 03 shr $0x3,%rdx 31: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 35: 0f 85 ca 17 00 00 jne 0x1805 3b: 4d 8b 66 60 mov 0x60(%r14),%r12 3f: 4d rex.WRB