======================================================= audit: type=1400 audit(1731784635.389:15): avc: denied { block_suspend } for pid=5455 comm="syz-executor.3" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.5:5459] Modules linked in: irq event stamp: 2563123 hardirqs last enabled at (2563122): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2563123): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2535214): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2535251): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 5459 Comm: syz-executor.5 Not tainted 6.12.0-rc7-next-20241115 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:mac80211_hwsim_beacon_tx+0x4d9/0x950 Code: 24 48 8d 78 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 45 04 00 00 48 8b 04 24 <44> 8b 68 18 48 8b 44 24 18 4a 8d 7c a8 04 48 b8 00 00 00 00 00 fc RSP: 0018:ffff88806cf09ce0 EFLAGS: 00000246 RAX: ffff88803e296650 RBX: 0000000000000000 RCX: ffffffff845c760e RDX: 1ffff11007c52ccd RSI: ffffffff833bd07c RDI: ffff88803e296668 RBP: ffff88803e2965f8 R08: 0000000000000000 R09: ffffed1007a6a1cf R10: 0000000000000000 R11: 5050505000000011 R12: ffff88801ad63640 R13: 0000000069537748 R14: 0000000000000000 R15: ffff88803d350e20 FS: 00007f633547c700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f82fcacff60 CR3: 00000000126e6000 CR4: 0000000000350ef0 Call Trace: __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa70 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:qlist_free_all+0x28/0x160 Code: 90 90 48 8b 07 48 85 c0 0f 84 41 01 00 00 41 57 41 56 41 55 49 89 fd 41 54 49 89 f4 55 53 eb 3e 48 63 95 c0 00 00 00 48 8b 18 <48> 89 ef 48 29 d0 48 89 c6 49 89 c6 e8 e7 f0 ff ff 49 89 c7 66 90 RSP: 0018:ffff88801d067430 EFLAGS: 00000246 RAX: ffff88800e373000 RBX: ffff88800bd84940 RCX: ffffea000038dcc0 RDX: 0000000000000000 RSI: ffff888008c4f780 RDI: ffffffff81849d96 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fdddf1 R10: ffffffff87eeef8f R11: 00000000000007e0 R12: 0000000000000000 R13: ffff88801d067468 R14: ffff88800afea000 R15: ffff88800afea000 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 __kmalloc_cache_noprof+0x149/0x3e0 __iomap_dio_rw+0x274/0x1cf0 iomap_dio_rw+0x40/0xa0 ext4_file_write_iter+0x110a/0x18e0 iter_file_splice_write+0xa09/0x1060 direct_splice_actor+0x192/0x7a0 splice_direct_to_actor+0x348/0x9d0 do_splice_direct+0x17a/0x250 do_sendfile+0xaf4/0xe60 __x64_sys_sendfile64+0x1d5/0x210 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6337f06b19 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:00007f633547c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f6338019f60 RCX: 00007f6337f06b19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003 RBP: 00007f6337f60f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000100000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc1501f36f R14: 00007f633547c300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: 24 48 and $0x48,%al 2: 8d 78 18 lea 0x18(%rax),%edi 5: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax c: fc ff df f: 48 89 fa mov %rdi,%rdx 12: 48 c1 ea 03 shr $0x3,%rdx 16: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax 1a: 84 c0 test %al,%al 1c: 74 08 je 0x26 1e: 3c 03 cmp $0x3,%al 20: 0f 8e 45 04 00 00 jle 0x46b 26: 48 8b 04 24 mov (%rsp),%rax * 2a: 44 8b 68 18 mov 0x18(%rax),%r13d <-- trapping instruction 2e: 48 8b 44 24 18 mov 0x18(%rsp),%rax 33: 4a 8d 7c a8 04 lea 0x4(%rax,%r13,4),%rdi 38: 48 rex.W 39: b8 00 00 00 00 mov $0x0,%eax 3e: 00 fc add %bh,%ah