watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.0:12358] Modules linked in: irq event stamp: 3360169 hardirqs last enabled at (3360168): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3360169): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3360062): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3360065): [] irq_exit_rcu+0x94/0xc0 CPU: 0 UID: 0 PID: 12358 Comm: syz-executor.0 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:ipv6_get_lladdr+0x162/0x4f0 Code: 83 60 01 00 00 48 8d 98 a8 fe ff ff 49 39 c5 0f 84 38 01 00 00 e8 3e 57 5e fd 48 8d 7b 72 48 89 f8 48 c1 e8 03 42 0f b6 14 20 <48> 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 23 03 00 00 44 RSP: 0018:ffff88806ce09c10 EFLAGS: 00000212 RAX: 1ffff11002b8220e RBX: ffff888015c11000 RCX: ffffffff81306b94 RDX: 0000000000000000 RSI: ffffffff83f324e2 RDI: ffff888015c11072 RBP: ffff88806ce09c50 R08: 0000000000000001 R09: ffffed1007bc54ac R10: ffff88803de2a563 R11: ffff88806ce09ff8 R12: dffffc0000000000 R13: ffff88803de2a008 R14: 0000000000000040 R15: ffff88803de2a5a0 FS: 00007f052c5ee700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555940c4c58 CR3: 000000001a476000 CR4: 0000000000350ef0 Call Trace: addrconf_rs_timer+0x2b1/0x7a0 call_timer_fn+0x198/0x5c0 __run_timer_base.part.0+0x688/0x950 run_timer_softirq+0xf9/0x1d0 handle_softirqs+0x1b1/0x770 irq_exit_rcu+0x94/0xc0 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:avtab_search_node+0x1ea/0x4d0 Code: 44 21 e8 80 3c 11 00 0f 85 d7 02 00 00 49 8b 14 24 4c 8d 24 c2 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 <0f> 85 c7 02 00 00 4d 8b 24 24 4d 85 e4 0f 84 a0 00 00 00 e8 ce 13 RSP: 0018:ffff8880163cf7d0 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000fbe RCX: 1ffff11001790d31 RDX: 1ffff110024b0d83 RSI: ffffffff820266c5 RDI: ffff8880163cf95c RBP: ffff8880163cf958 R08: 0000000000000004 R09: 0000000000000004 R10: 0000000000008000 R11: 0000000000000070 R12: ffff888012586c18 R13: 0000000000007fff R14: 000000000000012b R15: 0000000000000006 cond_compute_av+0x59/0x340 context_struct_compute_av+0x81f/0x1290 security_compute_av+0x47b/0xd50 avc_compute_av+0x83/0x4e0 avc_perm_nonode+0x9c/0x170 avc_has_perm_noaudit+0x2eb/0x3c0 avc_has_perm+0xa7/0x1a0 inode_has_perm+0x168/0x1c0 selinux_mmap_file+0xe8/0x190 security_mmap_file+0x75/0x200 vm_mmap_pgoff+0xd5/0x340 ksys_mmap_pgoff+0x194/0x520 __x64_sys_mmap+0x127/0x190 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f052f078b19 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:00007f052c5ee188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f052f18bf60 RCX: 00007f052f078b19 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020000000 RBP: 00007f052f0d2f6d R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000044031 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffb6d6361f R14: 00007f052c5ee300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 12389 Comm: syz-executor.2 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:kasan_check_range+0x1d/0x1b0 Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5b 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 72 14 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23 44 89 RSP: 0018:ffff88806cf097d8 EFLAGS: 00000082 RAX: ffffffff87ed4ea8 RBX: 0000000000000016 RCX: ffffffff812ef5ee RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff87ed4ea0 RBP: ffff88800bfc3700 R08: 0000000000000000 R09: fffffbfff0fda9d5 R10: ffffffff87ed4eaf R11: 0000000000000000 R12: ffff88800bfc41e0 R13: 0000000000000000 R14: ffffffff863f34b4 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f51cd74f6b8 CR3: 000000000d4d8000 CR4: 0000000000350ef0 Call Trace: hlock_class+0x4e/0x130 __lock_acquire+0x1508/0x4360 lock_acquire.part.0+0xeb/0x320 ktime_get+0x80/0x270 clockevents_program_event+0x14f/0x360 tick_program_event+0xa4/0x140 hrtimer_interrupt+0x343/0x750 __sysvec_apic_timer_interrupt+0xc2/0x390 sysvec_apic_timer_interrupt+0x34/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:kcov_remote_stop+0x263/0x490 Code: e4 75 1d 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f e9 71 e7 32 03 e8 7c f0 07 00 e9 ff fd ff ff e8 c2 ee 07 00 fb 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f e9 4e e7 32 03 41 80 7d 60 00 0f 84 RSP: 0018:ffff88806cf09c60 EFLAGS: 00000296 RAX: 000000000022e74e RBX: ffff88800bfc3700 RCX: 1ffffffff0fdae97 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8151897e RBP: ffff88806cf2da48 R08: 0000000000000001 R09: fffffbfff0fda9d4 R10: ffffffff87ed4ea7 R11: ffffffff81518787 R12: 0000000000000200 R13: 0000000000000000 R14: ffff8880185828a0 R15: ffff88800ef78c40 ieee80211_rx_list+0x650/0x2cf0 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:unmap_page_range+0x875/0x3530 Code: 51 61 d8 ff 48 8b 44 24 40 80 38 00 0f 85 03 22 00 00 48 8b 44 24 38 31 ff 48 8b 28 83 e5 08 48 89 ee e8 8e 64 d8 ff 48 85 ed <0f> 85 9e 06 00 00 49 bd ff 0f 00 00 00 00 f0 ff e8 16 61 d8 ff 4d RSP: 0018:ffff88803cbbf690 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88800d8cf218 RCX: ffffffff81791af2 RDX: ffff88800bfc3700 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 0000000000000000 R08: 0000000000000000 R09: fffff94000158986 R10: 0000000000000000 R11: 00000000fa83b2da R12: 800000002b131007 R13: 0000000000000000 R14: 00007f269a843000 R15: ffff88803cbbfad0 unmap_single_vma+0x19a/0x2b0 unmap_vmas+0x1f1/0x450 exit_mmap+0x187/0xa30 mmput+0xd5/0x350 do_exit+0x9ae/0x2a30 do_group_exit+0xd3/0x2a0 get_signal+0x219f/0x23d0 arch_do_signal_or_restart+0x81/0x780 syscall_exit_to_user_mode+0x123/0x1e0 do_syscall_64+0xcc/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f269b7f9a04 Code: Unable to access opcode bytes at 0x7f269b7f99da. RSP: 002b:00007f2698dbc060 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffea RBX: 00007f269b959f60 RCX: 00007f269b7f9a04 RDX: 0000000000000002 RSI: 00007f2698dbc0f0 RDI: 00000000ffffff9c RBP: 00007f2698dbc0f0 R08: 0000000000000000 R09: 00007f2698dbbf70 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 00007ffea3b7e05f R14: 00007f2698dbc300 R15: 0000000000022000 audit: type=1400 audit(1729121052.354:12): avc: denied { watch_reads } for pid=12505 comm="syz-executor.2" path="/syzkaller-testdir969422089/syzkaller.hiTloM/36" dev="sda" ino=15983 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=1 process 'syz-executor.5' launched './file1' with NULL argv: empty string added ---------------- Code disassembly (best guess), 3 bytes skipped: 0: 00 00 add %al,(%rax) 2: 48 8d 98 a8 fe ff ff lea -0x158(%rax),%rbx 9: 49 39 c5 cmp %rax,%r13 c: 0f 84 38 01 00 00 je 0x14a 12: e8 3e 57 5e fd callq 0xfd5e5755 17: 48 8d 7b 72 lea 0x72(%rbx),%rdi 1b: 48 89 f8 mov %rdi,%rax 1e: 48 c1 e8 03 shr $0x3,%rax 22: 42 0f b6 14 20 movzbl (%rax,%r12,1),%edx * 27: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2a: 83 e0 07 and $0x7,%eax 2d: 83 c0 01 add $0x1,%eax 30: 38 d0 cmp %dl,%al 32: 7c 08 jl 0x3c 34: 84 d2 test %dl,%dl 36: 0f 85 23 03 00 00 jne 0x35f 3c: 44 rex.R