netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.5:28462] Modules linked in: irq event stamp: 3872612 hardirqs last enabled at (3872611): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3872612): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (7656): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (7273): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 28462 Comm: syz-executor.5 Not tainted 6.1.0-rc6-next-20221125 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xc80 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 cd 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 ee 1f 00 00 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e5 00 00 RSP: 0018:ffff8880440472c8 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8440e25b RDX: ffffed10037f754c RSI: 0000000000000004 RDI: ffff88801bfbaa58 RBP: ffff88801bfbaa58 R08: 0000000000000000 R09: ffff88801bfbaa5b R10: ffffed10037f754b R11: 0000000000000001 R12: 0000000000000003 R13: ffffed10037f754b R14: 0000000000000001 R15: 1ffff11008808e5a FS: 00007f7f61609700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2db34000 CR3: 000000004b4b4000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: do_raw_spin_lock+0x1e0/0x270 do_get_write_access+0x120/0xf50 jbd2_journal_get_write_access+0x12a/0x1a0 __ext4_journal_get_write_access+0x1be/0x440 ext4_reserve_inode_write+0x18f/0x280 __ext4_mark_inode_dirty+0x15e/0x880 ext4_dirty_inode+0xd8/0x110 __mark_inode_dirty+0x1aa/0xe70 touch_atime+0x648/0x700 filemap_read+0x99d/0xb60 generic_file_read_iter+0x3d1/0x540 ext4_file_read_iter+0x186/0x4a0 generic_file_splice_read+0x18b/0x4d0 do_splice_to+0x1bc/0x240 splice_direct_to_actor+0x2b0/0x8c0 do_splice_direct+0x1bc/0x290 do_sendfile+0xb1d/0x1280 __x64_sys_sendfile64+0x248/0x2a0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f7f64093b19 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:00007f7f61609188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f7f641a6f60 RCX: 00007f7f64093b19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003 RBP: 00007f7f640edf6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000005f1 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc4e1477bf R14: 00007f7f61609300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 28438 Comm: syz-executor.0 Not tainted 6.1.0-rc6-next-20221125 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x8/0x20 Code: 00 00 00 e9 2a fe ff ff 66 2e 0f 1f 84 00 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 0c 24 <48> 89 f2 48 89 fe bf 07 00 00 00 e9 f8 fd ff ff 0f 1f 84 00 00 00 RSP: 0018:ffff88806cf09520 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff88806cf09780 RCX: ffffffff815bf3a8 RDX: ffff888040ad1ac0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888040c34c60 R14: ffff888040c34c60 R15: ffff88806cf09620 FS: 00007fda2fe93700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555569ebc58 CR3: 00000000377a0000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: perf_prepare_sample+0xa38/0x21e0 perf_event_output_forward+0xde/0x280 __perf_event_overflow+0x2d6/0x5b0 perf_swevent_hrtimer+0x361/0x3d0 __hrtimer_run_queues+0x17f/0xba0 hrtimer_interrupt+0x319/0x770 __sysvec_apic_timer_interrupt+0x148/0x500 sysvec_apic_timer_interrupt+0x3f/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__rcu_read_unlock+0x75/0x520 Code: 00 89 03 00 49 8d bc 24 f4 03 00 00 8b 9d f4 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 83 eb 01 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b5 01 00 00 41 RSP: 0018:ffff88806cf09bc0 EFLAGS: 00000202 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000100 RDX: 0000000000000000 RSI: ffffffff840b322b RDI: ffff888040ad1eb4 RBP: ffff888040ad1ac0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888040ad1ac0 R13: ffff888040417000 R14: ffff88803ea3dc50 R15: ffff888016690de0 __ieee80211_beacon_get+0x570/0x1380 ieee80211_beacon_get_tim+0x99/0x4f0 mac80211_hwsim_beacon_tx+0x1d2/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xba0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:lock_acquire+0x1df/0x530 Code: 03 b8 ff ff ff ff 65 0f c1 05 d5 74 d6 7e 83 f8 01 0f 85 c8 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffff8880312b76e8 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff11006256edf RCX: 0000000000001ada RDX: 1ffff1100815a483 RSI: 0000000000000002 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff876278bf R10: fffffbfff0ec4f17 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888010488780 R15: 0000000000000000 _raw_spin_lock+0x2e/0x40 do_get_write_access+0xcac/0xf50 jbd2_journal_get_write_access+0x12a/0x1a0 __ext4_journal_get_write_access+0x1be/0x440 ext4_reserve_inode_write+0x18f/0x280 __ext4_mark_inode_dirty+0x15e/0x880 ext4_dirty_inode+0xd8/0x110 __mark_inode_dirty+0x1aa/0xe70 touch_atime+0x648/0x700 splice_direct_to_actor+0x6c9/0x8c0 do_splice_direct+0x1bc/0x290 do_sendfile+0xb1d/0x1280 __x64_sys_sendfile64+0x248/0x2a0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fda3291db19 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:00007fda2fe93188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fda32a30f60 RCX: 00007fda3291db19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003 RBP: 00007fda32977f6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000005f1 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe548775cf R14: 00007fda2fe93300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 65 48 add %ah,0x48(%rbp) 5: 2b 04 25 28 00 00 00 sub 0x28,%eax c: 0f 85 cd 0a 00 00 jne 0xadf 12: 48 81 c4 88 00 00 00 add $0x88,%rsp 19: 5b pop %rbx 1a: 5d pop %rbp 1b: 41 5c pop %r12 1d: 41 5d pop %r13 1f: 41 5e pop %r14 21: 41 5f pop %r15 23: e9 ee 1f 00 00 jmpq 0x2016 28: f3 90 pause * 2a: e9 71 ff ff ff jmpq 0xffffffa0 <-- trapping instruction 2f: 44 8b 74 24 48 mov 0x48(%rsp),%r14d 34: 41 81 fe 00 01 00 00 cmp $0x100,%r14d 3b: 0f .byte 0xf 3c: 84 e5 test %ah,%ch