sg_write: data in/out 352299/2920 bytes for SCSI command 0x0-- guessing data in; program syz-executor.2 not setting count and/or reply_len properly netlink: 'syz-executor.2': attribute type 4 has an invalid length. SELinux: duplicate or incompatible mount options watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.2:4087] Modules linked in: irq event stamp: 4921213 hardirqs last enabled at (4921212): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4921213): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4850704): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4850707): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 4087 Comm: syz-executor.2 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0xb1/0x160 kernel/stacktrace.c:92 Code: 84 d2 0f 85 98 00 00 00 8b 43 0c 85 c0 75 57 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 0f 85 9a 00 00 00 <8d> 45 01 89 43 10 48 8b 03 48 8d 2c e8 48 b8 00 00 00 00 00 fc ff RSP: 0018:ffff88806cf09680 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88806cf09758 RCX: 1ffff1100d9e1201 RDX: 1ffff1100d9e12eb RSI: ffffffff82a1a917 RDI: ffff88806cf09764 RBP: 000000000000001e R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9e12c1 R12: ffff88806cf09758 R13: 0000000000000000 R14: ffff88801763b480 R15: 0000000000000170 FS: 00007f3c75b33700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557499cd9c78 CR3: 00000000472ae000 CR4: 0000000000350ee0 Call Trace: arch_stack_walk+0x73/0xf0 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc9/0xd0 mm/kasan/common.c:461 slab_post_alloc_hook mm/slab.h:532 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x13b/0x310 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] __kmalloc_node_track_caller+0x1a6/0x3b0 mm/slub.c:4496 __kmalloc_reserve net/core/skbuff.c:144 [inline] __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:212 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:448 netdev_alloc_skb include/linux/skbuff.h:2855 [inline] dev_alloc_skb include/linux/skbuff.h:2868 [inline] __ieee80211_beacon_get+0x3af/0x1440 net/mac80211/tx.c:4876 ieee80211_beacon_get_tim+0x88/0x9f0 net/mac80211/tx.c:4990 ieee80211_beacon_get include/net/mac80211.h:4912 [inline] mac80211_hwsim_beacon_tx+0x111/0x940 drivers/net/wireless/mac80211_hwsim.c:1740 __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1588 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1652 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1669 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:clear_page_rep+0x7/0x10 arch/x86/lib/clear_page_64.S:19 Code: 6a ff e9 2e fd ff ff 4c 89 ef e8 d4 18 6a ff e9 e2 fc ff ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc b9 00 02 00 00 31 c0 48 ab e9 31 95 1d 02 90 31 c0 b9 40 00 00 00 66 0f 1f 84 00 00 RSP: 0018:ffff88801e157668 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000048555000 RCX: 000000000000006c RDX: ffffffff84c8f740 RSI: ffffea0001215600 RDI: ffff888048555ca0 RBP: ffffea0001215540 R08: ffff88801763c8b0 R09: ffffed10090aa000 R10: fffff94000242a86 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff88801763b480 R14: ffffed1002ec7916 R15: ffffffff84c8f750 clear_page arch/x86/include/asm/page_64.h:49 [inline] clear_highpage include/linux/highmem.h:283 [inline] kernel_init_free_pages+0xc2/0x1b0 mm/page_alloc.c:1201 prep_new_page+0x16d/0x1d0 mm/page_alloc.c:2288 get_page_from_freelist+0x26e1/0x3170 mm/page_alloc.c:3913 __alloc_pages_nodemask+0x291/0x600 mm/page_alloc.c:4994 alloc_pages_current+0x187/0x280 mm/mempolicy.c:2266 alloc_pages include/linux/gfp.h:547 [inline] sg_build_indirect.isra.0+0x2f5/0x710 drivers/scsi/sg.c:1931 sg_start_req drivers/scsi/sg.c:1795 [inline] sg_common_write.constprop.0+0x992/0x1a30 drivers/scsi/sg.c:800 sg_write.part.0+0x69e/0xaa0 drivers/scsi/sg.c:704 sg_write+0x87/0x120 drivers/scsi/sg.c:610 vfs_write+0x29a/0xb10 fs/read_write.c:603 ksys_write+0x12d/0x260 fs/read_write.c:658 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f3c785bdb19 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:00007f3c75b33188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f3c786d0f60 RCX: 00007f3c785bdb19 RDX: 0000000000000b92 RSI: 0000000020001e00 RDI: 0000000000000004 RBP: 00007f3c78617f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe6062177f R14: 00007f3c75b33300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 0 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:711 ---------------- Code disassembly (best guess): 0: 84 d2 test %dl,%dl 2: 0f 85 98 00 00 00 jne 0xa0 8: 8b 43 0c mov 0xc(%rbx),%eax b: 85 c0 test %eax,%eax d: 75 57 jne 0x66 f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 16: fc ff df 19: 48 89 da mov %rbx,%rdx 1c: 48 c1 ea 03 shr $0x3,%rdx 20: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 24: 0f 85 9a 00 00 00 jne 0xc4 * 2a: 8d 45 01 lea 0x1(%rbp),%eax <-- trapping instruction 2d: 89 43 10 mov %eax,0x10(%rbx) 30: 48 8b 03 mov (%rbx),%rax 33: 48 8d 2c e8 lea (%rax,%rbp,8),%rbp 37: 48 rex.W 38: b8 00 00 00 00 mov $0x0,%eax 3d: 00 fc add %bh,%ah 3f: ff .byte 0xff