watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.6:22449] Modules linked in: irq event stamp: 1886771 hardirqs last enabled at (1886770): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (1886771): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (1886496): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (1886499): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 22449 Comm: syz-executor.6 Not tainted 6.13.0-rc3-next-20241218 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0xa90/0x2490 Code: ff ff 48 8b 74 24 10 48 89 f7 e8 ab eb ff ff 48 89 ef 48 8b 74 24 10 48 ba 00 00 00 00 00 fc ff df 48 c1 ef 03 48 8b 4c 24 18 <4c> 8b 44 24 20 80 3c 17 00 0f 85 9a 18 00 00 49 89 47 58 48 3d 00 RSP: 0018:ffff88806cf09138 EFLAGS: 00000212 RAX: ffffffff84737e26 RBX: 0000000000000002 RCX: ffffffff86ba13ec RDX: dffffc0000000000 RSI: ffff88806cf09b30 RDI: 1ffff1100d9e1240 RBP: ffff88806cf09200 R08: ffffffff86ba13f0 R09: ffff88806cf091e8 R10: 000000000003aa55 R11: 00000000000b3f02 R12: ffff88806cf09208 R13: ffff88806cf091f0 R14: ffff88806cf09b38 R15: ffff88806cf091a8 FS: 00007fc72c809700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f39b9ec3541 CR3: 0000000037046000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_noprof+0x1f7/0x4b0 cfg80211_inform_single_bss_data+0x4f1/0x1c70 cfg80211_inform_bss_data+0x20f/0x3510 cfg80211_inform_bss_frame_data+0x250/0x6a0 ieee80211_bss_info_update+0x2f6/0xa90 ieee80211_scan_rx+0x474/0xac0 ieee80211_rx_list+0x1e38/0x2840 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:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 a6 50 a6 fc 48 89 ef e8 0e bf a6 fc 80 e7 02 74 06 e8 34 df cf fc fb 65 ff 0d 84 bc 59 7b <74> 07 5b 5d e9 93 1e 00 00 0f 1f 44 00 00 5b 5d e9 87 1e 00 00 0f RSP: 0018:ffff88802c78fc08 EFLAGS: 00000246 RAX: 00000000001c5db1 RBX: 0000000000000256 RCX: 1ffffffff0fe1af1 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84a9ea7c RBP: ffff88800aaf3d80 R08: 0000000000000001 R09: fffffbfff0fdf9e1 R10: ffffffff87efcf0f R11: 0000000000000000 R12: 0000000000000000 R13: ffff88802c78fc58 R14: ffff88803f27b870 R15: ffff88803f27b870 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 security_file_alloc+0x35/0x130 init_file+0x95/0x480 alloc_empty_file+0x94/0x1e0 alloc_file_pseudo+0x139/0x200 __shmem_file_setup+0x214/0x310 __do_sys_memfd_create+0x4d7/0x980 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc72f293b19 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:00007fc72c808f48 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000020000040 RCX: 00007fc72f293b19 RDX: 0000000010020000 RSI: 0000000000000000 RDI: 00007fc72f2ed0fb RBP: 0000000000000002 R08: 0000020000010000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000008100000 R13: 00000000200000c0 R14: 0000000008100000 R15: 0000000020000040 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 Process accounting resumed netlink: 4 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. Process accounting resumed tmpfs: Unsupported parameter 'huge' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. tmpfs: Unsupported parameter 'huge' netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.6'. tmpfs: Bad value for 'nr_inodes' tmpfs: Bad value for 'nr_inodes' netlink: 40 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor.0'. SELinux: Context system_u:object_r:hald_dccm_exec_t:s0 is not valid (left unmapped). netlink: 40 bytes leftover after parsing attributes in process `syz-executor.0'. sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 32 prio class 0 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev sr0, logical block 0, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev sr0, logical block 1, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 6 prio class 0 Buffer I/O error on dev sr0, logical block 2, async page read Buffer I/O error on dev sr0, logical block 3, async page read Buffer I/O error on dev sr0, logical block 4, async page read Buffer I/O error on dev sr0, logical block 5, async page read Buffer I/O error on dev sr0, logical block 6, async page read Buffer I/O error on dev sr0, logical block 7, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev sr0, logical block 0, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev sr0, logical block 1, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 3 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 5 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 02 00 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ff 48 8b decl -0x75(%rax) 3: 74 24 je 0x29 5: 10 48 89 adc %cl,-0x77(%rax) 8: f7 e8 imul %eax a: ab stos %eax,%es:(%rdi) b: eb ff jmp 0xc d: ff 48 89 decl -0x77(%rax) 10: ef out %eax,(%dx) 11: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 16: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 1d: fc ff df 20: 48 c1 ef 03 shr $0x3,%rdi 24: 48 8b 4c 24 18 mov 0x18(%rsp),%rcx * 29: 4c 8b 44 24 20 mov 0x20(%rsp),%r8 <-- trapping instruction 2e: 80 3c 17 00 cmpb $0x0,(%rdi,%rdx,1) 32: 0f 85 9a 18 00 00 jne 0x18d2 38: 49 89 47 58 mov %rax,0x58(%r15) 3c: 48 rex.W 3d: 3d .byte 0x3d