ci starts bisection 2024-11-20 09:49:23.64293017 +0000 UTC m=+32851.099536847
bisecting fixing commit since b983b271662bd6104d429b0fd97af3333ba760bf
building syzkaller on 0278d00484bfe8f49aa9a7ae5ef4c3bc5cc40cd4
ensuring issue is reproducible on original commit b983b271662bd6104d429b0fd97af3333ba760bf

testing commit b983b271662bd6104d429b0fd97af3333ba760bf gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: c916ffb8caeeaa84dc64b7a4c7f04cce5bd9e865ab85fbec41a8e5e4bac1bb03
run #0: crashed: INFO: task hung in hugetlb_fault
run #1: crashed: INFO: task hung in hugetlb_wp
run #2: crashed: INFO: task hung in hugetlb_fault
run #3: crashed: INFO: task hung in hugetlb_fault
run #4: crashed: INFO: task hung in hugetlb_wp
run #5: crashed: INFO: task hung in hugetlb_fault
run #6: crashed: INFO: task hung in hugetlb_fault
run #7: crashed: INFO: task hung in hugetlb_wp
run #8: crashed: INFO: task hung in hugetlb_wp
run #9: crashed: INFO: task hung in hugetlb_fault
run #10: crashed: INFO: task hung in hugetlb_fault
run #11: crashed: INFO: task hung in hugetlb_fault
run #12: crashed: INFO: task hung in hugetlb_wp
run #13: crashed: INFO: task hung in hugetlb_wp
run #14: crashed: INFO: task hung in remove_inode_hugepages
run #15: crashed: INFO: task hung in hugetlb_fault
run #16: crashed: INFO: task hung in hugetlb_fault
run #17: crashed: INFO: task hung in hugetlb_fault
run #18: crashed: INFO: task hung in hugetlb_fault
run #19: crashed: INFO: task hung in hugetlb_fault
representative crash: INFO: task hung in hugetlb_fault, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit b983b271662bd6104d429b0fd97af3333ba760bf gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b14c0e76cf8305d79c2a12119f0bc6726d770895fb08f05f03aed5cbc4b1eadd
run #0: crashed: INFO: task hung in hugetlb_fault
run #1: crashed: INFO: task hung in hugetlb_wp
run #2: crashed: INFO: task hung in hugetlb_wp
run #3: crashed: INFO: task hung in hugetlb_fault
run #4: crashed: INFO: task hung in hugetlb_fault
run #5: crashed: INFO: task hung in hugetlb_fault
run #6: crashed: INFO: task hung in hugetlb_fault
run #7: crashed: INFO: task hung in hugetlb_fault
run #8: crashed: INFO: task hung in remove_inode_hugepages
run #9: crashed: INFO: task hung in hugetlb_fault
representative crash: INFO: task hung in hugetlb_fault, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
kconfig minimization: base=4046 full=8192 leaves diff=2108
split chunks (needed=false): <2108>
split chunk #0 of len 2108 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit b983b271662bd6104d429b0fd97af3333ba760bf gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: ddac49770951c2f76f4db5ef31aca2f522d16619832b6296d887200f21d85ff2
run #0: crashed: INFO: task hung in remove_inode_hugepages
run #1: crashed: INFO: task hung in hugetlb_fault
run #2: crashed: INFO: task hung in hugetlb_fault
run #3: crashed: INFO: task hung in hugetlb_fault
run #4: crashed: INFO: task hung in hugetlb_fault
run #5: crashed: INFO: task hung in hugetlb_fault
run #6: crashed: INFO: task hung in hugetlb_fault
run #7: crashed: INFO: task hung in hugetlb_fault
run #8: crashed: INFO: task hung in hugetlb_fault
run #9: crashed: INFO: task hung in hugetlbfs_fallocate
representative crash: INFO: task hung in remove_inode_hugepages, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit b983b271662bd6104d429b0fd97af3333ba760bf gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: f2c76889e8681c5e7753f16d3859e6224e57f59812bd764630805d2a3ad53cc5
all runs: crashed: INFO: task hung in hugetlb_fault
representative crash: INFO: task hung in hugetlb_fault, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit b983b271662bd6104d429b0fd97af3333ba760bf gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e9b20c6cd88ba203e36c66c2d6297c724127e3bc07343bf04e4c359b2914a954
run #0: crashed: INFO: task hung in hugetlb_fault
run #1: crashed: INFO: task hung in hugetlb_fault
run #2: crashed: INFO: task hung in hugetlb_fault
run #3: crashed: INFO: task hung in hugetlb_fault
run #4: crashed: INFO: task hung in hugetlb_fault
run #5: crashed: INFO: task hung in hugetlbfs_fallocate
run #6: crashed: INFO: task hung in hugetlb_fault
run #7: crashed: INFO: task hung in remove_inode_hugepages
run #8: crashed: INFO: task hung in hugetlb_fault
run #9: crashed: INFO: task hung in hugetlb_fault
representative crash: INFO: task hung in hugetlb_fault, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit b983b271662bd6104d429b0fd97af3333ba760bf gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b00170798322c35dd61a6f98f6ba2399ef87b58836e3ea8fac72dab2cb3a503f
run #0: crashed: INFO: task hung in hugetlb_fault
run #1: crashed: INFO: task hung in hugetlb_fault
run #2: crashed: INFO: task hung in hugetlb_fault
run #3: crashed: INFO: task hung in hugetlb_fault
run #4: crashed: INFO: task hung in hugetlb_fault
run #5: crashed: INFO: task hung in hugetlb_fault
run #6: crashed: INFO: task hung in hugetlb_fault
run #7: crashed: INFO: task hung in hugetlb_fault
run #8: crashed: INFO: task hung in hugetlb_wp
run #9: crashed: INFO: task hung in hugetlb_fault
representative crash: INFO: task hung in hugetlb_fault, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit b983b271662bd6104d429b0fd97af3333ba760bf gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: ccdc076c727e02e34a6ac750a2ad79982dc409580589eed441d184ef72c042e6
all runs: crashed: INFO: task hung in hugetlb_fault
representative crash: INFO: task hung in hugetlb_fault, types: [HANG]
the chunk can be dropped
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing current HEAD bf9aa14fc523d2763fc9a10672a709224e8fcaf4
testing commit bf9aa14fc523d2763fc9a10672a709224e8fcaf4 gcc
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5052c4325aeeafc996c6426c95da5fecc018b19abfaa64384610e454e82b832e
run #0: crashed: INFO: task hung in hugetlb_fault
run #1: crashed: INFO: task hung in hugetlb_fault
run #2: crashed: INFO: task hung in hugetlb_fault
run #3: crashed: INFO: task hung in hugetlb_fault
run #4: crashed: INFO: task hung in hugetlb_fault
run #5: crashed: INFO: task hung in hugetlb_fault
run #6: crashed: INFO: task hung in hugetlb_fault
run #7: crashed: INFO: task hung in hugetlb_fault
run #8: crashed: INFO: task hung in hugetlb_fault
run #9: crashed: INFO: task hung in hugetlb_wp
representative crash: INFO: task hung in hugetlb_fault, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 2h37m12.501301866s (build: 1h22m9.220037587s, test: 1h7m32.718589676s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'timers-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
crash: INFO: task hung in hugetlb_fault
INFO: task syz.4.112:4562 blocked for more than 143 seconds.
      Not tainted 6.12.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.112       state:D stack:14480 pid:4562  tgid:4562  ppid:2415   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x4c4/0xad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x25/0x110 kernel/sched/core.c:6848
 io_schedule+0x41/0x60 kernel/sched/core.c:7681
 folio_wait_bit_common+0x136/0x380 mm/filemap.c:1309
 __folio_lock mm/filemap.c:1647 [inline]
 folio_lock include/linux/pagemap.h:1148 [inline]
 folio_lock include/linux/pagemap.h:1144 [inline]
 __filemap_get_folio+0x196/0x2f0 mm/filemap.c:1900
 filemap_lock_folio include/linux/pagemap.h:788 [inline]
 filemap_lock_hugetlb_folio include/linux/hugetlb.h:795 [inline]
 hugetlb_fault+0x782/0xc00 mm/hugetlb.c:6406
 handle_mm_fault+0x351/0x360 mm/memory.c:6075
 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x256/0x6e0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f8a38c01629
RSP: 002b:00007ffc16596360 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffffff7fffff
RDX: a966f2d439001e60 RSI: 0000000020800000 RDI: 0000555577fe43c8
RBP: 00007f8a38ee7a80 R08: 00007f8a38bb0000 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000003 R12: 000000000000e0fa
R13: 00007ffc16596460 R14: 0000000000000032 R15: fffffffffffffffe
 </TASK>
INFO: task syz.4.112:4569 blocked for more than 143 seconds.
      Not tainted 6.12.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.112       state:D stack:13328 pid:4569  tgid:4562  ppid:2415   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x4c4/0xad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x25/0x110 kernel/sched/core.c:6848
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
 __mutex_lock_common kernel/locking/mutex.c:665 [inline]
 __mutex_lock+0x54c/0xa40 kernel/locking/mutex.c:735
 hugetlb_wp+0x6ff/0xc90 mm/hugetlb.c:5894
 hugetlb_fault+0xa4e/0xc00 mm/hugetlb.c:6454
 handle_mm_fault+0x351/0x360 mm/memory.c:6075
 do_user_addr_fault arch/x86/mm/fault.c:1389 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x161/0x6e0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:rep_movs_alternative+0x33/0x70 arch/x86/lib/copy_user_64.S:58
Code: 40 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 48 8b 06 <48> 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb
RSP: 0018:ffffc90001cafde0 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000008
RDX: 000000002001b408 RSI: ffffc90001cafe10 RDI: 000000002001b400
RBP: 000000002001b400 R08: 0000000000080000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffc90001cafe10
R13: 0000000000018ff8 R14: 0000000020019680 R15: 0000000000000000
 copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:147 [inline]
 _inline_copy_to_user include/linux/uaccess.h:197 [inline]
 _copy_to_user+0x56/0x70 lib/usercopy.c:26
 copy_to_user include/linux/uaccess.h:225 [inline]
 msr_read+0x68/0xe0 arch/x86/kernel/msr.c:69
 vfs_read+0xe0/0x370 fs/read_write.c:563
 ksys_read+0x6f/0xf0 fs/read_write.c:708
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x6d/0x170 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8a38d2dff9
RSP: 002b:00007f8a387af038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f8a38ee5f80 RCX: 00007f8a38d2dff9
RDX: 0000000000018ff8 RSI: 0000000020019680 RDI: 0000000000000003
RBP: 00007f8a38da0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8a38ee5f80 R15: 00007ffc165961f8
 </TASK>
INFO: task syz.1.158:4754 blocked for more than 143 seconds.
      Not tainted 6.12.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.158       state:D stack:13272 pid:4754  tgid:4754  ppid:2406   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x4c4/0xad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x25/0x110 kernel/sched/core.c:6848
 io_schedule+0x41/0x60 kernel/sched/core.c:7681
 folio_wait_bit_common+0x136/0x380 mm/filemap.c:1309
 __folio_lock mm/filemap.c:1647 [inline]
 folio_lock include/linux/pagemap.h:1148 [inline]
 folio_lock include/linux/pagemap.h:1144 [inline]
 __filemap_get_folio+0x196/0x2f0 mm/filemap.c:1900
 filemap_lock_folio include/linux/pagemap.h:788 [inline]
 filemap_lock_hugetlb_folio include/linux/hugetlb.h:795 [inline]
 hugetlb_fault+0x782/0xc00 mm/hugetlb.c:6406
 handle_mm_fault+0x351/0x360 mm/memory.c:6075
 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x256/0x6e0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fb232701629
RSP: 002b:00007ffcb70bae00 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffffff7fffff
RDX: d0950b2fba55acc8 RSI: 0000000020800000 RDI: 0000555581f8e3c8
RBP: 00007fb2329e7a80 R08: 00007fb2326aa000 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000003 R12: 000000000000e81c
R13: 00007ffcb70baf00 R14: 0000000000000032 R15: fffffffffffffffe
 </TASK>
INFO: task syz.1.158:4755 blocked for more than 143 seconds.
      Not tainted 6.12.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.158       state:D stack:13808 pid:4755  tgid:4754  ppid:2406   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x4c4/0xad0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x25/0x110 kernel/sched/core.c:6848
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
 __mutex_lock_common kernel/locking/mutex.c:665 [inline]
 __mutex_lock+0x54c/0xa40 kernel/locking/mutex.c:735
 hugetlb_wp+0x6ff/0xc90 mm/hugetlb.c:5894
 hugetlb_fault+0xa4e/0xc00 mm/hugetlb.c:6454
 handle_mm_fault+0x351/0x360 mm/memory.c:6075
 do_user_addr_fault arch/x86/mm/fault.c:1389 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x161/0x6e0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:rep_movs_alternative+0x33/0x70 arch/x86/lib/copy_user_64.S:58
Code: 40 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 48 8b 06 <48> 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb
RSP: 0018:ffffc9000210fde0 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000008
RDX: 0000000020029750 RSI: ffffc9000210fe10 RDI: 0000000020029748
RBP: 0000000020029748 R08: 0000000000080000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffc9000210fe10
R13: 0000000000018ff8 R14: 0000000020019680 R15: 0000000000000000
 copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:147 [inline]
 _inline_copy_to_user include/linux/uaccess.h:197 [inline]
 _copy_to_user+0x56/0x70 lib/usercopy.c:26
 copy_to_user include/linux/uaccess.h:225 [inline]
 msr_read+0x68/0xe0 arch/x86/kernel/msr.c:69
 vfs_read+0xe0/0x370 fs/read_write.c:563
 ksys_read+0x6f/0xf0 fs/read_write.c:708
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x6d/0x170 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb23282dff9
RSP: 002b:00007fb2322a9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fb2329e5f80 RCX: 00007fb23282dff9
RDX: 0000000000018ff8 RSI: 0000000020019680 RDI: 0000000000000003
RBP: 00007fb2328a0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb2329e5f80 R15: 00007ffcb70bac98
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8277d640 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8277d640 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8277d640 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x36/0x120 kernel/locking/lockdep.c:6744
2 locks held by kworker/u8:6/729:
 #0: ffff888100078948 ((wq_completion)events_unbound){....}-{0:0}, at: process_one_work+0x444/0x6a0 kernel/workqueue.c:3204
 #1: ffffc90001ac3e58 ((work_completion)(&sub_info->work)){....}-{0:0}, at: process_one_work+0x1ec/0x6a0 kernel/workqueue.c:3205
2 locks held by getty/838:
 #0: ffff8881076f70a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x60 drivers/tty/tty_ldisc.c:243
 #1: ffffc90001c672f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x54b/0x6a0 drivers/tty/n_tty.c:2211
2 locks held by kworker/u8:7/2604:
3 locks held by syz.4.112/4562:
 #0: ffff888101f3fce8 (&vma->vm_lock->lock){....}-{3:3}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff888101f3fce8 (&vma->vm_lock->lock){....}-{3:3}, at: lock_vma_under_rcu+0x86/0x1d0 mm/memory.c:6243
 #1: ffff888101ac43c8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlb_fault+0xc4/0xc00 mm/hugetlb.c:6326
 #2: ffff88810d2a5ae8 (&resv_map->rw_sema){....}-{3:3}, at: hugetlb_fault+0xcc/0xc00 mm/hugetlb.c:6333
2 locks held by syz.4.112/4569:
 #0: ffff88810006a5e0 (&mm->mmap_lock){....}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:163 [inline]
 #0: ffff88810006a5e0 (&mm->mmap_lock){....}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:6114 [inline]
 #0: ffff88810006a5e0 (&mm->mmap_lock){....}-{3:3}, at: lock_mm_and_find_vma+0x26/0x280 mm/memory.c:6174
 #1: ffff888101ac43c8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlb_wp+0x6ff/0xc90 mm/hugetlb.c:5894
3 locks held by syz.1.158/4754:
 #0: ffff888101702f48 (&vma->vm_lock->lock){....}-{3:3}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff888101702f48 (&vma->vm_lock->lock){....}-{3:3}, at: lock_vma_under_rcu+0x86/0x1d0 mm/memory.c:6243
 #1: ffff888101ac48d8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlb_fault+0xc4/0xc00 mm/hugetlb.c:6326
 #2: ffff888108b20ae8 (&resv_map->rw_sema){....}-{3:3}, at: hugetlb_fault+0xcc/0xc00 mm/hugetlb.c:6333
2 locks held by syz.1.158/4755:
 #0: ffff88810f2d1ce0 (&mm->mmap_lock){....}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:163 [inline]
 #0: ffff88810f2d1ce0 (&mm->mmap_lock){....}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:6114 [inline]
 #0: ffff88810f2d1ce0 (&mm->mmap_lock){....}-{3:3}, at: lock_mm_and_find_vma+0x26/0x280 mm/memory.c:6174
 #1: ffff888101ac48d8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlb_wp+0x6ff/0xc90 mm/hugetlb.c:5894
3 locks held by syz.0.469/6404:
 #0: ffff888100fd49f0 (&vma->vm_lock->lock){....}-{3:3}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff888100fd49f0 (&vma->vm_lock->lock){....}-{3:3}, at: lock_vma_under_rcu+0x86/0x1d0 mm/memory.c:6243
 #1: ffff888101ac47b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlb_fault+0xc4/0xc00 mm/hugetlb.c:6326
 #2: ffff88810bb1f8e8 (&resv_map->rw_sema){....}-{3:3}, at: hugetlb_fault+0xcc/0xc00 mm/hugetlb.c:6333
2 locks held by syz.0.469/6405:
 #0: ffff88810f2d6de0 (&mm->mmap_lock){....}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:163 [inline]
 #0: ffff88810f2d6de0 (&mm->mmap_lock){....}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:6114 [inline]
 #0: ffff88810f2d6de0 (&mm->mmap_lock){....}-{3:3}, at: lock_mm_and_find_vma+0x26/0x280 mm/memory.c:6174
 #1: ffff888101ac47b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlb_wp+0x6ff/0xc90 mm/hugetlb.c:5894
2 locks held by syz.2.470/6422:
 #0: ffff88810d2801a0 (&vma->vm_lock->lock){....}-{3:3}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff88810d2801a0 (&vma->vm_lock->lock){....}-{3:3}, at: lock_vma_under_rcu+0x86/0x1d0 mm/memory.c:6243
 #1: ffff888101ac47b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlb_fault+0xc4/0xc00 mm/hugetlb.c:6326
3 locks held by syz.2.470/6429:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff888102ad29c8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff888102ad29c8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac47b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
2 locks held by syz.4.497/6807:
 #0: ffff888101702660 (&vma->vm_lock->lock){....}-{3:3}, at: vma_start_read include/linux/mm.h:716 [inline]
 #0: ffff888101702660 (&vma->vm_lock->lock){....}-{3:3}, at: lock_vma_under_rcu+0x86/0x1d0 mm/memory.c:6243
 #1: ffff888101ac47b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlb_fault+0xc4/0xc00 mm/hugetlb.c:6326
3 locks held by syz.4.497/6808:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810972b748 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810972b748 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac47b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.2.955/9906:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810d3ae548 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810d3ae548 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac43c8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.1.1065/10368:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810cbc4ec8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810cbc4ec8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac47b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.0.1066/10380:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810cbc5348 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810cbc5348 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac43c8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.3.1076/10417:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810cbc6e48 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810cbc6e48 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac48d8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.4.1112/10525:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810cbc72c8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810cbc72c8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac48d8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.1.1562/14518:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810df4d348 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810df4d348 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac47b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.4.1565/14524:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810df4dc48 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810df4dc48 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac47b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.3.1885/15752:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810df50ec8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810df50ec8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac47b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.2.1890/15778:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810df51c48 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810df51c48 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac43c8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.0.1891/15779:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810df520c8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810df520c8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac47b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.4.2021/17146:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810df532c8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810df532c8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac43c8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.0.2421/19970:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810dba4ec8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810dba4ec8 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac43c8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.2.2430/20043:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810dba5c48 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810dba5c48 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac47b8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
3 locks held by syz.3.2437/20128:
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: ksys_fallocate fs/open.c:351 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __do_sys_fallocate fs/open.c:356 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __se_sys_fallocate fs/open.c:354 [inline]
 #0: ffff8881026b23f8 (sb_writers#14){....}-{0:0}, at: __x64_sys_fallocate+0x3e/0x80 fs/open.c:354
 #1: ffff88810dba6548 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88810dba6548 (&sb->s_type->i_mutex_key#15){....}-{3:3}, at: hugetlbfs_fallocate+0xb9/0x680 fs/hugetlbfs/inode.c:834
 #2: ffff888101ac43c8 (&hugetlb_fault_mutex_table[i]){....}-{3:3}, at: hugetlbfs_fallocate+0x205/0x680 fs/hugetlbfs/inode.c:878
1 lock held by syz.4.6133/5410:

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x5a/0x90 lib/dump_stack.c:120
 nmi_cpu_backtrace+0xd4/0x110 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0xd5/0x140 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0x633/0x660 kernel/hung_task.c:379
 kthread+0xd6/0x100 kernel/kthread.c:389
 ret_from_fork+0x2c/0x50 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 729 Comm: kworker/u8:6 Not tainted 6.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:87 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:147 [inline]
RIP: 0010:default_send_IPI_single_phys+0x52/0xd0 arch/x86/kernel/apic/ipi.c:195
Code: 00 c3 5f ff f6 c4 10 74 7d f3 90 8b 04 25 00 c3 5f ff f6 c4 10 75 f2 89 e8 c1 e0 18 89 04 25 10 c3 5f ff 89 34 25 00 c3 5f ff <9c> 58 f6 c4 02 75 4e 80 e7 02 74 01 fb 5b 5d 41 5c c3 cc cc cc cc
RSP: 0018:ffffc90001ac3c98 EFLAGS: 00000006
RAX: 00000000000000fb RBX: 0000000000000282 RCX: 0000000000000002
RDX: ffff888237d00000 RSI: 00000000000000fb RDI: 0000000000000001
RBP: 0000000001000000 R08: 000000000002e08c R09: 0000000000013e15
R10: 0000000000000001 R11: ffffffff83033a8a R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020032000 CR3: 000000000264a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 arch_send_call_function_single_ipi arch/x86/include/asm/smp.h:94 [inline]
 send_call_function_single_ipi kernel/smp.c:118 [inline]
 smp_call_function_many_cond+0x593/0x640 kernel/smp.c:866
 on_each_cpu_cond_mask+0x3b/0x70 kernel/smp.c:1051
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:2085 [inline]
 text_poke_bp_batch+0x2ec/0x310 arch/x86/kernel/alternative.c:2378
 text_poke_flush arch/x86/kernel/alternative.c:2486 [inline]
 text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2493
 arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
 static_key_disable_cpuslocked kernel/jump_label.c:240 [inline]
 static_key_disable_cpuslocked+0x4f/0x60 kernel/jump_label.c:228
 static_key_disable+0x15/0x20 kernel/jump_label.c:248
 toggle_allocation_gate mm/kfence/core.c:854 [inline]
 toggle_allocation_gate+0x75/0x130 mm/kfence/core.c:841
 process_one_work+0x22f/0x6a0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x1bc/0x350 kernel/workqueue.c:3391
 kthread+0xd6/0x100 kernel/kthread.c:389
 ret_from_fork+0x2c/0x50 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>