loop6: detected capacity change from 0 to 264192 FAT-fs (loop6): bogus number of FAT structure FAT-fs (loop6): Can't find a valid FAT filesystem process 'syz-executor.2' launched './file1' with NULL argv: empty string added watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.3:5184] Modules linked in: irq event stamp: 2715781 hardirqs last enabled at (2715780): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2715781): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2711182): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2711185): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 5184 Comm: syz-executor.3 Not tainted 6.13.0-rc3-next-20241220 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:arch_stack_walk+0xa0/0xf0 Code: 03 84 c0 74 2a 48 8d bd 68 ff ff ff e8 c9 7f 07 00 8b 85 68 ff ff ff 85 c0 74 14 48 8d bd 68 ff ff ff e8 23 7d 07 00 48 89 c6 <48> 85 c0 75 ca 48 8b 45 d8 65 48 2b 04 25 28 00 00 00 75 32 48 83 RSP: 0018:ffff88806ce09578 EFLAGS: 00000246 RAX: ffffffff84a7c1cf RBX: ffffffff815ee470 RCX: 0000000000000001 RDX: 1ffff1100d9c12ba RSI: ffffffff84a7c1cf RDI: ffffffff84a7c1cf RBP: ffff88806ce09610 R08: 0000000000000001 R09: ffff88806ce095b8 R10: 000000000003aab6 R11: 000000000000ecc4 R12: ffff88806ce09640 R13: 0000000000000000 R14: ffff888015508000 R15: 0000000000092820 FS: 00007fae3e58a700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2599a14400 CR3: 000000002f878000 CR4: 0000000000350ef0 Call Trace: stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 __alloc_skb+0x2ad/0x370 skb_copy+0x1d5/0x3b0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xafb/0x1320 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa80 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:__sanitizer_cov_trace_pc+0x8/0x80 Code: 38 03 48 c7 c0 f4 ff ff ff eb 92 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 34 24 <65> 48 8b 15 a0 dd 91 7e 65 8b 05 a1 dd 91 7e a9 00 01 ff 00 74 27 RSP: 0018:ffff88800bec7830 EFLAGS: 00000202 RAX: 0000000000010659 RBX: ffff88800bec7950 RCX: ffffc90001fe7000 RDX: 0000000000040000 RSI: ffffffff84a4b0fb RDI: 0000000000000001 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed10017d8f2f R10: 0000000000000025 R11: fffffffffffc3430 R12: ffffffff84c81f60 R13: 1ffff110017d8f0a R14: 0000000000000001 R15: ffffffff84c81f61 format_decode+0x26b/0xb50 vsnprintf+0x15c/0x1610 sprintf+0xc4/0x100 info_print_prefix+0x1c4/0x210 find_first_fitting_seq+0xd7/0x250 syslog_print_all+0x152/0x3b0 do_syslog.part.0+0x35d/0x5c0 __x64_sys_syslog+0x10d/0x170 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fae41014b19 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:00007fae3e58a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000067 RAX: ffffffffffffffda RBX: 00007fae41127f60 RCX: 00007fae41014b19 RDX: 00000000000000fb RSI: 0000000020000380 RDI: 0000000000000003 RBP: 00007fae4106ef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff79439e4f R14: 00007fae3e58a300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.13.0-rc3-next-20241220 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x242/0xb60 Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 85 08 00 00 b8 01 00 00 00 66 89 45 00 e9 bf fe ff ff 89 44 24 38 f3 90 5b fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 RSP: 0018:ffff88806cf099e0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff84aa53ff RDX: fffffbfff0c1bb01 RSI: 0000000000000004 RDI: ffffffff860dd800 RBP: ffffffff860dd800 R08: 0000000000000000 R09: fffffbfff0c1bb00 R10: ffffffff860dd803 R11: 0000000000000001 R12: 1ffff1100d9e133d R13: 0000000000000003 R14: fffffbfff0c1bb00 R15: ffff88806cf09a18 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056116bc3b618 CR3: 0000000014df2000 CR4: 0000000000350ef0 Call Trace: do_raw_spin_lock+0x1de/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6d1/0x1320 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa80 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:default_idle+0x1e/0x30 Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 eb 0c 0f 1f 44 00 00 0f 00 2d 69 56 1a 00 0f 1f 44 00 00 fb f4 e9 1c 30 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffff88800970fe68 EFLAGS: 00000206 RAX: 000000000029d78d RBX: 0000000000000001 RCX: ffffffff84a82a97 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff814b32ba RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9e6c4a R10: ffff88806cf36253 R11: 0000000000000000 R12: ffffffff863fcc90 R13: 1ffff110012e1fd2 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x6d/0xb0 do_idle+0x2fa/0x3b0 cpu_startup_entry+0x4f/0x60 start_secondary+0x1c1/0x220 common_startup_64+0x12c/0x138 ---------------- Code disassembly (best guess): 0: 03 84 c0 74 2a 48 8d add -0x72b7d58c(%rax,%rax,8),%eax 7: bd 68 ff ff ff mov $0xffffff68,%ebp c: e8 c9 7f 07 00 callq 0x77fda 11: 8b 85 68 ff ff ff mov -0x98(%rbp),%eax 17: 85 c0 test %eax,%eax 19: 74 14 je 0x2f 1b: 48 8d bd 68 ff ff ff lea -0x98(%rbp),%rdi 22: e8 23 7d 07 00 callq 0x77d4a 27: 48 89 c6 mov %rax,%rsi * 2a: 48 85 c0 test %rax,%rax <-- trapping instruction 2d: 75 ca jne 0xfffffff9 2f: 48 8b 45 d8 mov -0x28(%rbp),%rax 33: 65 48 2b 04 25 28 00 sub %gs:0x28,%rax 3a: 00 00 3c: 75 32 jne 0x70 3e: 48 rex.W 3f: 83 .byte 0x83