tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.6:8787] Modules linked in: irq event stamp: 2352823 hardirqs last enabled at (2352822): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (2352823): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (2351326): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (2351335): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 8787 Comm: syz-executor.6 Not tainted 5.10.190 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:arch_stack_walk+0x99/0xf0 arch/x86/kernel/stacktrace.c:26 Code: 8d d4 16 03 84 c0 74 2a 48 8d bd 78 ff ff ff e8 4d 08 07 00 8b 85 78 ff ff ff 85 c0 74 14 48 8d bd 78 ff ff ff e8 07 05 07 00 <48> 89 c6 48 85 c0 75 ca 48 8b 45 d8 65 48 2b 04 25 28 00 00 00 75 RSP: 0018:ffff88806cf09740 EFLAGS: 00000282 RAX: ffffffff81157ab4 RBX: ffffffff812fed00 RCX: ffffffff85964e01 RDX: 1ffff1100d9e12f1 RSI: 0000000000000001 RDI: ffffffff81157ab4 RBP: ffff88806cf097c8 R08: 0000000000000005 R09: ffff88803df2f418 R10: 0000000000032042 R11: 1ffff1100d9e12d5 R12: ffff88806cf097f8 R13: 0000000000000000 R14: ffff8880092a3480 R15: 00000000000000e8 FS: 00007f3844c02700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f89991bc344 CR3: 000000003e038000 CR4: 0000000000350ee0 Call Trace: 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] kmem_cache_alloc_node+0x14b/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:198 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:446 netdev_alloc_skb include/linux/skbuff.h:2842 [inline] dev_alloc_skb include/linux/skbuff.h:2855 [inline] __ieee80211_beacon_get+0x3af/0x1440 net/mac80211/tx.c:4874 ieee80211_beacon_get_tim+0x88/0x9f0 net/mac80211/tx.c:4988 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:1583 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1647 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1664 __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:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:qlist_free_all+0xa0/0xe0 mm/kasan/quarantine.c:130 Code: 15 15 01 5c 03 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 f3 00 5c 03 48 8b 50 08 48 8d 4a ff 83 e2 01 48 0f 45 c1 48 8b 78 18 93 49 c7 44 24 08 00 00 00 00 49 c7 04 24 00 00 00 00 49 c7 44 RSP: 0018:ffff88803df2f4f0 EFLAGS: 00000202 RAX: ffffea000073ee00 RBX: 0000000000000000 RCX: ffffea000073ee00 RDX: 0000000000000001 RSI: ffff88801cfb97a0 RDI: ffff88800804d640 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff816c2f00 R10: ffff88801e071290 R11: 0000000000000001 R12: ffff88803df2f528 R13: 0000000080000000 R14: ffffffff80000000 R15: ffff88801cfb97a0 quarantine_reduce+0x184/0x210 mm/kasan/quarantine.c:267 __kasan_kmalloc.constprop.0+0xa2/0xd0 mm/kasan/common.c:442 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 do_blockdev_direct_IO+0x21b/0x43f0 fs/direct-io.c:1154 blockdev_direct_IO include/linux/fs.h:3064 [inline] fat_direct_IO+0x1d6/0x380 fs/fat/inode.c:288 generic_file_read_iter+0x259/0x490 mm/filemap.c:2536 call_read_iter include/linux/fs.h:1913 [inline] generic_file_splice_read+0x455/0x6d0 fs/splice.c:311 do_splice_to+0x10e/0x160 fs/splice.c:788 splice_direct_to_actor+0x2fe/0x980 fs/splice.c:867 do_splice_direct+0x1c4/0x290 fs/splice.c:976 do_sendfile+0x553/0x1090 fs/read_write.c:1257 __do_sys_sendfile64 fs/read_write.c:1318 [inline] __se_sys_sendfile64 fs/read_write.c:1304 [inline] __x64_sys_sendfile64+0x1d1/0x210 fs/read_write.c:1304 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xcc RIP: 0033:0x7f38476adb19 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:00007f3844c02188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f38477c1020 RCX: 00007f38476adb19 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000003 RBP: 00007f3847707f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd763501ff R14: 00007f3844c02300 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:706 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: 03 84 c0 74 2a 48 8d add -0x72b7d58c(%rax,%rax,8),%eax 7: bd 78 ff ff ff mov $0xffffff78,%ebp c: e8 4d 08 07 00 callq 0x7085e 11: 8b 85 78 ff ff ff mov -0x88(%rbp),%eax 17: 85 c0 test %eax,%eax 19: 74 14 je 0x2f 1b: 48 8d bd 78 ff ff ff lea -0x88(%rbp),%rdi 22: e8 07 05 07 00 callq 0x7052e * 27: 48 89 c6 mov %rax,%rsi <-- trapping instruction 2a: 48 85 c0 test %rax,%rax 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 .byte 0x75