EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. hrtimer: interrupt took 26460 ns watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.6:7496] Modules linked in: irq event stamp: 2784413 hardirqs last enabled at (2784412): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2784413): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2775008): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2775023): [] irq_exit_rcu+0x94/0xc0 CPU: 1 UID: 0 PID: 7496 Comm: syz-executor.6 Not tainted 6.12.0-rc3-next-20241016 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:rcu_read_lock_held+0x4/0x50 Code: 90 90 90 90 90 90 f3 0f 1e fa 48 c7 c7 20 43 c1 85 e9 90 fa ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 27 f2 49 03 41 b8 01 00 00 00 85 c0 75 08 44 89 c0 e9 95 34 4c RSP: 0018:ffff88806cf09878 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff845731fe RDX: ffff88803bc93700 RSI: ffffffff8457564f RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed10077601cf R10: 0000000000000001 R11: 00000000000c2f81 R12: dffffc0000000000 R13: ffff88803aace500 R14: ffff88803bc3c350 R15: ffff88806cf09d78 FS: 00007f08572b5700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0859cdc7e0 CR3: 000000000a900000 CR4: 0000000000350ef0 Call Trace: ieee80211_rx_handlers+0x2e44/0x9100 ieee80211_prepare_and_rx_handle+0x1f7f/0x5d50 ieee80211_rx_for_interface+0x10e/0x200 ieee80211_rx_list+0x1e54/0x2cf0 ieee80211_rx_napi+0xdc/0x3b0 ieee80211_handle_queued_frames+0xd9/0x130 tasklet_action_common+0x235/0x3b0 handle_softirqs+0x1b1/0x770 irq_exit_rcu+0x94/0xc0 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:put_cpu_partial+0x10a/0x1b0 Code: 24 28 75 5b 49 c7 44 24 28 00 00 00 00 4c 89 e7 48 8d 35 00 00 00 00 e8 b4 ff ab ff 4d 85 ed 74 06 e8 ca 7f d5 ff fb 4d 85 f6 <74> 1c 5b 4c 89 f6 48 89 ef 5d 41 5c 41 5d 41 5e e9 c1 fa ff ff 44 RSP: 0018:ffff88803c72fae0 EFLAGS: 00000246 RAX: 00000000002a57ed RBX: ffffea00003c0680 RCX: 1ffffffff0fdca53 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8183f876 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fda9d9 R10: ffffffff87ed4ecf R11: 00000000000007e0 R12: ffff88806cf40350 R13: 0000000000000200 R14: 0000000000000000 R15: ffff88800f01a128 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19c/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 security_file_alloc+0x35/0x130 init_file+0x95/0x230 alloc_empty_file+0x94/0x1e0 alloc_file_pseudo+0x139/0x200 anon_inode_getfile+0xb4/0x1e0 __do_sys_perf_event_open+0x175f/0x2b60 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0859d3fb19 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:00007f08572b5188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f0859e52f60 RCX: 00007f0859d3fb19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000080 RBP: 00007f0859d99f6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe2f44ad6f R14: 00007f08572b5300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop4: detected capacity change from 0 to 512 audit: type=1400 audit(1729202058.671:14): avc: denied { write } for pid=7517 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: f3 0f 1e fa endbr64 a: 48 c7 c7 20 43 c1 85 mov $0xffffffff85c14320,%rdi 11: e9 90 fa ff ff jmpq 0xfffffaa6 16: 90 nop 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: f3 0f 1e fa endbr64 * 2a: e8 27 f2 49 03 callq 0x349f256 <-- trapping instruction 2f: 41 b8 01 00 00 00 mov $0x1,%r8d 35: 85 c0 test %eax,%eax 37: 75 08 jne 0x41 39: 44 89 c0 mov %r8d,%eax 3c: e9 .byte 0xe9 3d: 95 xchg %eax,%ebp 3e: 34 4c xor $0x4c,%al