watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.6:11017] Modules linked in: irq event stamp: 6728925 hardirqs last enabled at (6728924): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (6728925): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (6706034): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (6706037): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 11017 Comm: syz-executor.6 Not tainted 6.1.0-rc8-next-20221207 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__read_once_word_nocheck+0x3/0x10 Code: e9 8b fd ff ff e8 3d 91 6a 00 e9 43 fd ff ff 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 07 fc 5a 2f 03 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 RSP: 0018:ffff88806ce09840 EFLAGS: 00000202 RAX: 00007f885ba8eb19 RBX: 0000000000000001 RCX: 0000000000000001 RDX: ffff88801d020001 RSI: ffff88801d01ff58 RDI: ffff88801d01ffd8 RBP: ffff88806ce09920 R08: ffffffff86467c5c R09: ffffffff86467c60 R10: ffff88806ce09ff8 R11: 0000000000038001 R12: ffff88806ce09909 R13: ffff88806ce09928 R14: ffff88806ce098c8 R15: ffffffff86467c61 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f09f71aa650 CR3: 000000003db5e000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: unwind_next_frame+0xaf4/0x2130 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+0x54b/0xba0 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:lock_acquire+0x466/0x530 Code: ce 85 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 97 00 00 00 48 8b 05 c3 0d a2 04 e8 2e 0a 07 00 85 c0 74 17 <65> ff 0d 5b 50 d7 7e 0f 85 53 fc ff ff 0f 1f 44 00 00 e9 49 fc ff RSP: 0018:ffff88801d01f588 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 1ffff11003a03eb3 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff85d07c17 R10: fffffbfff0ba0f82 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff856085a0 R15: 0000000000000000 folio_memcg_lock+0x3e/0x4a0 page_remove_rmap+0x57/0x620 unmap_page_range+0x1fdf/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+0x21b7/0x22f0 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: 0033:0x7f885ba8eb19 Code: Unable to access opcode bytes at 0x7f885ba8eaef. RSP: 002b:00007f8859004188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: fffffffffffffffe RBX: 00007f885bba1f60 RCX: 00007f885ba8eb19 RDX: 0000000000000200 RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007f885bae8f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc6f918faf R14: 00007f8859004300 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: e9 8b fd ff ff jmpq 0xfffffd90 5: e8 3d 91 6a 00 callq 0x6a9147 a: e9 43 fd ff ff jmpq 0xfffffd52 f: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 16: 00 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 48 8b 07 mov (%rdi),%rax * 2a: e9 fc 5a 2f 03 jmpq 0x32f5b2b <-- trapping instruction 2f: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 36: 00 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop