watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.4:8144] Modules linked in: irq event stamp: 4349163 hardirqs last enabled at (4349162): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4349163): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4310352): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4310355): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 8144 Comm: syz-executor.4 Not tainted 6.2.0-rc3-next-20230109 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x348/0x2130 Code: 8e c7 15 00 00 41 c6 46 40 01 49 c7 c0 40 4c 4c 85 48 b8 00 00 00 00 00 fc ff df 4d 8d 48 04 4c 89 ca 48 c1 ea 03 0f b6 04 02 <4c> 89 ca 83 e2 07 38 d0 7f 08 84 c0 0f 85 e4 14 00 00 41 0f b6 40 RSP: 0018:ffff88806ce09a10 EFLAGS: 00000216 RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff84423381 RDX: 1ffffffff0c8d314 RSI: ffffffff86469886 RDI: ffffffff86010fdc RBP: ffff88806ce09ae8 R08: ffffffff8646989e R09: ffffffff864698a2 R10: ffffed100d9c135f R11: 0000000000038001 R12: ffff88806ce09ad1 R13: ffff88806ce09af0 R14: ffff88806ce09a90 R15: ffffffff84423381 FS: 00007fcae7f75700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f799c6023a4 CR3: 0000000020364000 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_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0xff/0x510 rcu_core+0x7a8/0x19b0 __do_softirq+0x1c7/0x913 __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:try_charge_memcg+0xe8a/0x1330 Code: 00 48 39 ea 0f 82 09 01 00 00 49 8d bd 10 01 00 00 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 e2 03 00 00 4d 8b ad 10 01 00 00 <4d> 85 ed 0f 84 2a ff ff ff 49 8d ad 40 01 00 00 e9 39 fe ff ff 48 RSP: 0018:ffff888046caf7c8 EFLAGS: 00000246 RAX: 1ffff11001218022 RBX: 00000000000000b5 RCX: ffffffff81800112 RDX: 0007ffffffffffff RSI: 0000000000000008 RDI: ffff8880090c0110 RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8880090c0207 R10: ffffed1001218040 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff888008c0c000 R14: 0000000000012b00 R15: ffff888046caf848 obj_cgroup_charge+0x315/0x8a0 kmem_cache_alloc+0xa6/0x300 seq_open+0x5b/0x180 __seq_open_private+0x3b/0xd0 seq_open_private+0x25/0x50 proc_seq_open+0xce/0x100 proc_reg_open+0x27b/0x5b0 do_dentry_open+0x6ca/0x12b0 path_openat+0x184c/0x2a50 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: 0033:0x7fcaea9ffb19 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:00007fcae7f75188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fcaeab12f60 RCX: 00007fcaea9ffb19 RDX: 0000000000000000 RSI: 0000000020000600 RDI: ffffffffffffff9c RBP: 00007fcaeaa59f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcfb13a4af R14: 00007fcae7f75300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8145 Comm: syz-executor.7 Not tainted 6.2.0-rc3-next-20230109 #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 f9 cd 6a 00 48 8b 54 24 28 48 8b 74 24 20 44 8b 5c 24 18 8b 0c 95 10 b7 49 86 <8d> 56 01 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 95 10 b7 49 86 49 RSP: 0018:ffff88806cf09698 EFLAGS: 00000246 RAX: 0000000000000007 RBX: 0000000000000002 RCX: 00000000000aab4c RDX: 00000000000311b1 RSI: 00000000000311b1 RDI: ffffffff8655fdd4 RBP: ffff88806cf09770 R08: ffffffff862f7128 R09: ffffffff862f712c R10: ffffed100d9e12f0 R11: 0000000000038001 R12: ffff88806cf09759 R13: ffff88806cf09778 R14: ffff88806cf09718 R15: ffffffff8411b1b2 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f516845c998 CR3: 000000000c7fa000 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_slab_alloc+0x59/0x70 kmem_cache_alloc_node+0x187/0x310 __alloc_skb+0x21a/0x310 skb_copy+0x13d/0x3d0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __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:__sanitizer_cov_trace_pc+0x20/0x70 Code: 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 05 0d 17 ba 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 80 89 03 00 00 01 ff 00 74 0e 85 c9 74 35 8b 82 14 14 00 00 85 c0 74 2b 8b RSP: 0018:ffff888046a87580 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffea000102d440 RCX: 0000000000000000 RDX: ffff888038d7b580 RSI: ffffffff816338b2 RDI: 0000000000000007 RBP: ffff888043f39ce8 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: 000000000000019b R15: ffffea000102d440 release_pages+0x202/0x1040 tlb_batch_pages_flush+0xa8/0x1b0 unmap_page_range+0x164b/0x2c90 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x6a0 mmput+0xd5/0x390 do_exit+0x99b/0x2780 do_group_exit+0xd4/0x2a0 get_signal+0x2255/0x2390 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0xf5/0x190 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f708c5b1b19 Code: Unable to access opcode bytes at 0x7f708c5b1aef. RSP: 002b:00007f7089b27188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000005 RBX: 00007f708c6c4f60 RCX: 00007f708c5b1b19 RDX: ffffffffffffffff RSI: 000000000000004c RDI: 0000000020000280 RBP: 00007f708c60bf6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd239e32bf R14: 00007f7089b27300 R15: 0000000000022000 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: 00 00 add %al,(%rax) 2: 41 c6 46 40 01 movb $0x1,0x40(%r14) 7: 49 c7 c0 40 4c 4c 85 mov $0xffffffff854c4c40,%r8 e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 15: fc ff df 18: 4d 8d 48 04 lea 0x4(%r8),%r9 1c: 4c 89 ca mov %r9,%rdx 1f: 48 c1 ea 03 shr $0x3,%rdx 23: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax * 27: 4c 89 ca mov %r9,%rdx <-- trapping instruction 2a: 83 e2 07 and $0x7,%edx 2d: 38 d0 cmp %dl,%al 2f: 7f 08 jg 0x39 31: 84 c0 test %al,%al 33: 0f 85 e4 14 00 00 jne 0x151d 39: 41 rex.B 3a: 0f .byte 0xf 3b: b6 40 mov $0x40,%dh