====================================== | [ 115.085201][ T1335] ================================================================== | [ 115.085549][ T1335] BUG: KASAN: null-ptr-deref in try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072) | [ 115.085845][ T1335] Write of size 8 at addr 0000000000000000 by task ip/1335 | [ 115.086153][ T1335] [ 115.086270][ T1335] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 115.086273][ T1335] Call Trace: [ 115.086275][ T1335] [ 115.086277][ T1335] dump_stack_lvl (lib/dump_stack.c:123) [ 115.086287][ T1335] ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072) [ 115.086290][ T1335] kasan_report (mm/kasan/report.c:597) [ 115.086297][ T1335] ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072) [ 115.086303][ T1335] kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200) [ 115.086306][ T1335] try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072) [ 115.086311][ T1335] __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364) [ 115.086315][ T1335] ? enable_delayed_work (kernel/workqueue.c:4359) [ 115.086319][ T1335] ? qdisc_destroy (net/sched/sch_generic.c:1355) [ 115.086326][ T1335] __cancel_work_sync (kernel/workqueue.c:4383) [ 115.086330][ T1335] __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2)) [ 115.086338][ T1335] ? netdev_notify_peers (net/core/dev.c:1891) [ 115.086343][ T1335] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455) [ 115.086349][ T1335] __dev_change_flags (./include/linux/list.h:119 ./include/linux/list.h:223 ./include/linux/list.h:237 net/core/dev.c:1945 net/core/dev.c:9924) [ 115.086352][ T1335] ? __free_zapped_classes (kernel/locking/lockdep.c:5343) [ 115.086359][ T1335] ? netif_set_allmulti (net/core/dev.c:9890) [ 115.086361][ T1335] ? __lock_release (kernel/locking/lockdep.c:5536) [ 115.086367][ T1335] netif_change_flags (net/core/dev.c:9989) [ 115.086372][ T1335] do_setlink.constprop.0 (net/core/rtnetlink.c:3158) [ 115.086378][ T1335] ? rtnl_newlink_create (net/core/rtnetlink.c:3036) [ 115.086384][ T1335] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 115.086391][ T1335] ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876) [ 115.086396][ T1335] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 115.086401][ T1335] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) [ 115.086405][ T1335] ? __mutex_handoff (kernel/locking/mutex.c:88) [ 115.086408][ T1335] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 115.086413][ T1335] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 115.086416][ T1335] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) [ 115.086420][ T1335] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760) [ 115.086426][ T1335] ? __create_object (mm/kmemleak.c:786) [ 115.086430][ T1335] ? __lock_release (kernel/locking/lockdep.c:5536) [ 115.086433][ T1335] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071) [ 115.086437][ T1335] ? ww_mutex_lock (kernel/locking/mutex.c:759) [ 115.086440][ T1335] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) [ 115.086445][ T1335] ? __rtnl_newlink (net/core/rtnetlink.c:3922) [ 115.086450][ T1335] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073) [ 115.086455][ T1335] ? __rtnl_newlink (net/core/rtnetlink.c:3963) [ 115.086458][ T1335] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 115.086463][ T1335] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 115.086467][ T1335] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956) [ 115.086469][ T1335] ? __lock_release (kernel/locking/lockdep.c:5536) [ 115.086474][ T1335] ? __rtnl_newlink (net/core/rtnetlink.c:3963) [ 115.086477][ T1335] rtnetlink_rcv_msg (net/core/rtnetlink.c:6958) [ 115.086480][ T1335] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 115.086483][ T1335] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 115.086490][ T1335] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 115.086495][ T1335] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 115.086499][ T1335] ? netlink_ack (net/netlink/af_netlink.c:2527) [ 115.086505][ T1335] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340) [ 115.086508][ T1335] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 115.086512][ T1335] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344) [ 115.086516][ T1335] ? netlink_attachskb (net/netlink/af_netlink.c:1329) [ 115.086520][ T1335] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 115.086526][ T1335] netlink_sendmsg (net/netlink/af_netlink.c:1894) [ 115.086530][ T1335] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 115.086534][ T1335] ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361) [ 115.086541][ T1335] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 115.086544][ T1335] ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630) [ 115.086551][ T1335] ? get_timestamp.constprop.0 (net/socket.c:2576) [ 115.086555][ T1335] ? __copy_msghdr (net/socket.c:2556) [ 115.086562][ T1335] ___sys_sendmsg (net/socket.c:2686) [ 115.086565][ T1335] ? kasan_record_aux_stack (mm/kasan/generic.c:559) [ 115.086568][ T1335] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3125) [ 115.086575][ T1335] ? copy_msghdr_from_user (net/socket.c:2673) [ 115.086580][ T1335] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 115.086585][ T1335] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 115.086590][ T1335] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 115.086594][ T1335] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65) [ 115.086600][ T1335] ? __lock_release (kernel/locking/lockdep.c:5536) [ 115.086607][ T1335] __sys_sendmsg (net/socket.c:2716) [ 115.086610][ T1335] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148) [ 115.086614][ T1335] ? __sys_sendmsg_sock (net/socket.c:2701) [ 115.086621][ T1335] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 115.086625][ T1335] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 115.086633][ T1335] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 115.086638][ T1335] RIP: 0033:0x7f0883ae21d7 [ 115.086642][ T1335] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 All code ======== 0: 0e (bad) 1: 00 f7 add %dh,%bh 3: d8 64 89 02 fsubs 0x2(%rcx,%rcx,4) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b9 jmp 0xffffffffffffffc9 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 2e 00 00 00 mov $0x2e,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 89 54 24 1c mov %edx,0x1c(%rsp) 3b: 48 89 74 24 10 mov %rsi,0x10(%rsp) Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 89 54 24 1c mov %edx,0x1c(%rsp) 11: 48 89 74 24 10 mov %rsi,0x10(%rsp) [ 115.086645][ T1335] RSP: 002b:00007fffe4dcd5f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 115.086649][ T1335] RAX: ffffffffffffffda RBX: 00007fffe4dcdd20 RCX: 00007f0883ae21d7 [ 115.086651][ T1335] RDX: 0000000000000000 RSI: 00007fffe4dcd660 RDI: 0000000000000005 [ 115.086653][ T1335] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078 [ 115.086655][ T1335] R10: 00007f08839def60 R11: 0000000000000246 R12: 0000000000000003 [ 115.086656][ T1335] R13: 00000000691cc2da R14: 0000000000499600 R15: 0000000000000000 | [ 115.105291][ T1335] #PF: error_code(0x0002) - not-present page | [ 115.105528][ T1335] PGD e9ef067 P4D e9ef067 PUD e9f0067 PMD 0 | [ 115.105773][ T1335] Oops: Oops: 0002 [#1] SMP KASAN | [ 115.106353][ T1335] Tainted: [B]=BAD_PAGE [ 115.106494][ T1335] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 115.106748][ T1335] RIP: 0010:try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072) [ 115.106990][ T1335] Code: 00 41 89 c0 b8 01 00 00 00 45 85 c0 74 0f 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 be 08 00 00 00 48 89 df e8 7f 7f 81 00 48 0f ba 2b 00 72 11 48 83 c4 10 31 c0 5b 5d 41 5c 41 5d 41 5e All code ======== 0: 00 41 89 add %al,-0x77(%rcx) 3: c0 b8 01 00 00 00 45 sarb $0x45,0x1(%rax) a: 85 c0 test %eax,%eax c: 74 0f je 0x1d e: 48 83 c4 10 add $0x10,%rsp 12: 5b pop %rbx 13: 5d pop %rbp 14: 41 5c pop %r12 16: 41 5d pop %r13 18: 41 5e pop %r14 1a: 41 5f pop %r15 1c: c3 ret 1d: be 08 00 00 00 mov $0x8,%esi 22: 48 89 df mov %rbx,%rdi 25: e8 7f 7f 81 00 call 0x817fa9 2a:* f0 48 0f ba 2b 00 lock btsq $0x0,(%rbx) <-- trapping instruction 30: 72 11 jb 0x43 32: 48 83 c4 10 add $0x10,%rsp 36: 31 c0 xor %eax,%eax 38: 5b pop %rbx 39: 5d pop %rbp 3a: 41 5c pop %r12 3c: 41 5d pop %r13 3e: 41 5e pop %r14 Code starting with the faulting instruction =========================================== 0: f0 48 0f ba 2b 00 lock btsq $0x0,(%rbx) 6: 72 11 jb 0x19 8: 48 83 c4 10 add $0x10,%rsp c: 31 c0 xor %eax,%eax e: 5b pop %rbx f: 5d pop %rbp 10: 41 5c pop %r12 12: 41 5d pop %r13 14: 41 5e pop %r14 [ 115.107662][ T1335] RSP: 0018:ffffc900024b6f40 EFLAGS: 00010046 [ 115.107904][ T1335] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffad84090a [ 115.108181][ T1335] RDX: fffffbfff634f2cd RSI: 0000000000000008 RDI: ffffffffb1a79660 [ 115.108471][ T1335] RBP: ffffc900024b6fa8 R08: 0000000000000001 R09: fffffbfff634f2cc [ 115.108762][ T1335] R10: ffffffffb1a79667 R11: ffffc900024b6a00 R12: 0000000000000000 [ 115.109039][ T1335] R13: 0000000000000282 R14: ffff888009611000 R15: dffffc0000000000 [ 115.109320][ T1335] FS: 00007f0883914800(0000) GS:ffff888084872000(0000) knlGS:0000000000000000 [ 115.109642][ T1335] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 115.109888][ T1335] CR2: 0000000000000000 CR3: 000000000e9e8004 CR4: 0000000000772ef0 [ 115.110167][ T1335] PKRU: 55555554 [ 115.110313][ T1335] Call Trace: [ 115.110457][ T1335] [ 115.110556][ T1335] __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364) [ 115.110758][ T1335] ? enable_delayed_work (kernel/workqueue.c:4359) [ 115.110946][ T1335] ? qdisc_destroy (net/sched/sch_generic.c:1355) [ 115.111130][ T1335] __cancel_work_sync (kernel/workqueue.c:4383) [ 115.111318][ T1335] __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2)) [ 115.111505][ T1335] ? netdev_notify_peers (net/core/dev.c:1891) [ 115.111687][ T1335] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455) [ 115.111886][ T1335] __dev_change_flags (./include/linux/list.h:119 ./include/linux/list.h:223 ./include/linux/list.h:237 net/core/dev.c:1945 net/core/dev.c:9924) [ 115.112068][ T1335] ? __free_zapped_classes (kernel/locking/lockdep.c:5343) [ 115.112252][ T1335] ? netif_set_allmulti (net/core/dev.c:9890) [ 115.112441][ T1335] ? __lock_release (kernel/locking/lockdep.c:5536) [ 115.112625][ T1335] netif_change_flags (net/core/dev.c:9989) [ 115.112822][ T1335] do_setlink.constprop.0 (net/core/rtnetlink.c:3158) [ 115.113010][ T1335] ? rtnl_newlink_create (net/core/rtnetlink.c:3036) [ 115.113228][ T1335] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 115.113410][ T1335] ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876) [ 115.113585][ T1335] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 115.113795][ T1335] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) [ 115.113988][ T1335] ? __mutex_handoff (kernel/locking/mutex.c:88) [ 115.114171][ T1335] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 115.114367][ T1335] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 115.114554][ T1335] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) [ 115.114736][ T1335] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760) [ 115.114932][ T1335] ? __create_object (mm/kmemleak.c:786) [ 115.115117][ T1335] ? __lock_release (kernel/locking/lockdep.c:5536) [ 115.115304][ T1335] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071) [ 115.115492][ T1335] ? ww_mutex_lock (kernel/locking/mutex.c:759) [ 115.115676][ T1335] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) [ 115.115868][ T1335] ? __rtnl_newlink (net/core/rtnetlink.c:3922) [ 115.116056][ T1335] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073) [ 115.116250][ T1335] ? __rtnl_newlink (net/core/rtnetlink.c:3963) [ 115.116446][ T1335] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 115.116631][ T1335] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 115.116824][ T1335] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956) [ 115.117015][ T1335] ? __lock_release (kernel/locking/lockdep.c:5536) [ 115.117201][ T1335] ? __rtnl_newlink (net/core/rtnetlink.c:3963) [ 115.117392][ T1335] rtnetlink_rcv_msg (net/core/rtnetlink.c:6958) [ 115.117579][ T1335] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 115.117760][ T1335] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 115.117957][ T1335] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 115.118141][ T1335] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 115.118327][ T1335] ? netlink_ack (net/netlink/af_netlink.c:2527) [ 115.118515][ T1335] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340) [ 115.118699][ T1335] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 115.118882][ T1335] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344) [ 115.119080][ T1335] ? netlink_attachskb (net/netlink/af_netlink.c:1329) [ 115.119265][ T1335] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 115.119456][ T1335] netlink_sendmsg (net/netlink/af_netlink.c:1894) [ 115.119640][ T1335] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 115.119825][ T1335] ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361) [ 115.120026][ T1335] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 115.120211][ T1335] ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630) [ 115.120409][ T1335] ? get_timestamp.constprop.0 (net/socket.c:2576) [ 115.120665][ T1335] ? __copy_msghdr (net/socket.c:2556) [ 115.120858][ T1335] ___sys_sendmsg (net/socket.c:2686) [ 115.121052][ T1335] ? kasan_record_aux_stack (mm/kasan/generic.c:559) [ 115.121236][ T1335] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3125) [ 115.121477][ T1335] ? copy_msghdr_from_user (net/socket.c:2673) [ 115.121663][ T1335] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 115.121846][ T1335] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 115.122051][ T1335] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 115.122235][ T1335] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65) [ 115.122430][ T1335] ? __lock_release (kernel/locking/lockdep.c:5536) [ 115.122624][ T1335] __sys_sendmsg (net/socket.c:2716) [ 115.122808][ T1335] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148) [ 115.123040][ T1335] ? __sys_sendmsg_sock (net/socket.c:2701) [ 115.123233][ T1335] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 115.123426][ T1335] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 115.123615][ T1335] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 115.123842][ T1335] RIP: 0033:0x7f0883ae21d7 [ 115.124041][ T1335] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 All code ======== 0: 0e (bad) 1: 00 f7 add %dh,%bh 3: d8 64 89 02 fsubs 0x2(%rcx,%rcx,4) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b9 jmp 0xffffffffffffffc9 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 2e 00 00 00 mov $0x2e,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 89 54 24 1c mov %edx,0x1c(%rsp) 3b: 48 89 74 24 10 mov %rsi,0x10(%rsp) Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 89 54 24 1c mov %edx,0x1c(%rsp) 11: 48 89 74 24 10 mov %rsi,0x10(%rsp) [ 115.124707][ T1335] RSP: 002b:00007fffe4dcd5f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 115.124990][ T1335] RAX: ffffffffffffffda RBX: 00007fffe4dcdd20 RCX: 00007f0883ae21d7 [ 115.125276][ T1335] RDX: 0000000000000000 RSI: 00007fffe4dcd660 RDI: 0000000000000005 [ 115.125561][ T1335] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078 [ 115.125843][ T1335] R10: 00007f08839def60 R11: 0000000000000246 R12: 0000000000000003 Finger prints: try_to_grab_pending:__cancel_work:__cancel_work_sync:__dev_close_many:__dev_change_flags kasan_report:kasan_check_range:try_to_grab_pending:__cancel_work:__cancel_work_sync