watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.6:11185] Modules linked in: irq event stamp: 3799515 hardirqs last enabled at (3799514): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3799515): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3795246): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3795251): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 11185 Comm: syz-executor.6 Not tainted 6.13.0-rc2-next-20241213 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x80 Code: 7e 60 e8 a3 ff ff ff 31 c0 e9 cc ca 35 03 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 34 24 65 48 8b 15 00 b5 91 7e 65 8b 05 01 b5 91 RSP: 0018:ffff88806ce09890 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000080 RCX: ffffffff847a637e RDX: ffff888038753780 RSI: 0000000000000008 RDI: 0000000000000003 RBP: ffff88803d29f350 R08: 0000000000000000 R09: ffffed1006e7b5b0 R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff8880373d8e20 R14: ffff888030e28c40 R15: ffff88806ce09d70 FS: 00007f55f9b72700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f55fc64aa88 CR3: 0000000039774000 CR4: 0000000000350ef0 Call Trace: ieee80211_rx_handlers+0x56a8/0x9100 ieee80211_prepare_and_rx_handle+0x1f9d/0x5e70 ieee80211_rx_for_interface+0x10e/0x200 ieee80211_rx_list+0x1bec/0x2840 ieee80211_rx_napi+0xdc/0x3b0 ieee80211_handle_queued_frames+0xd9/0x130 tasklet_action_common+0x235/0x3b0 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:__slab_free+0x7f/0x310 Code: c1 e8 1f 4d 85 ed 66 89 5c 24 58 41 89 c6 41 0f 94 c2 66 85 db 74 05 45 84 d2 74 05 45 84 f6 74 42 41 8b 7f 08 4c 8b 4c 24 58 <4c> 89 ea 4c 89 e6 4c 8b 44 24 20 e8 b1 9d ff ff 84 c0 74 9d 4c 89 RSP: 0018:ffff88802ccaf680 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00000000000d000c RCX: 00000000000d000d RDX: ffff88800e331000 RSI: ffffea000038cc40 RDI: 0000000000089800 RBP: ffff88802ccaf720 R08: 0000000000000001 R09: 00000000000d000c R10: ffffea000038cc01 R11: 0000000000000000 R12: ffffea000038cc40 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888008c4f780 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_lru_noprof+0x14c/0x3c0 proc_alloc_inode+0x27/0x210 alloc_inode+0x63/0x240 new_inode+0x1c/0x190 proc_pid_make_inode+0x21/0x170 proc_ns_instantiate+0x59/0x100 proc_ns_dir_lookup+0x249/0x2e0 lookup_open.isra.0+0x483/0x1620 path_openat+0xc91/0x2990 do_filp_open+0x1e9/0x450 do_sys_openat2+0x164/0x1d0 __x64_sys_openat+0x143/0x200 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f55fc5afa04 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44 RSP: 002b:00007f55f9b720b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f55fc70ff60 RCX: 00007f55fc5afa04 RDX: 0000000000000000 RSI: 00007f55fc655f82 RDI: 00000000ffffff9c RBP: 00007f55fc655f82 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007ffe12633eaf R14: 00007f55f9b72300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. loop5: detected capacity change from 0 to 40 audit: type=1400 audit(1734104410.644:10): avc: denied { write } for pid=11479 comm="syz-executor.5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 Bluetooth: hci1: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci7: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci6: command 0x0406 tx timeout Bluetooth: hci5: command 0x0406 tx timeout No source specified No source specified loop5: detected capacity change from 0 to 40 No source specified syz-executor.5: attempt to access beyond end of device loop5: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop5, logical block 10, lost async page write No source specified loop0: detected capacity change from 0 to 40 loop5: detected capacity change from 0 to 40 No source specified ---------------- Code disassembly (best guess): 0: 7e 60 jle 0x62 2: e8 a3 ff ff ff callq 0xffffffaa 7: 31 c0 xor %eax,%eax 9: e9 cc ca 35 03 jmpq 0x335cada e: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 15: 00 00 00 00 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: 90 nop 28: 90 nop 29: 90 nop * 2a: f3 0f 1e fa endbr64 <-- trapping instruction 2e: 48 8b 34 24 mov (%rsp),%rsi 32: 65 48 8b 15 00 b5 91 mov %gs:0x7e91b500(%rip),%rdx # 0x7e91b53a 39: 7e 3a: 65 gs 3b: 8b .byte 0x8b 3c: 05 .byte 0x5 3d: 01 .byte 0x1 3e: b5 91 mov $0x91,%ch